diff options
Diffstat (limited to '3rdparty/glfw/source/examples')
| -rw-r--r-- | 3rdparty/glfw/source/examples/CMakeLists.txt | 88 | ||||
| -rw-r--r-- | 3rdparty/glfw/source/examples/boing.c | 680 | ||||
| -rw-r--r-- | 3rdparty/glfw/source/examples/gears.c | 361 | ||||
| -rw-r--r-- | 3rdparty/glfw/source/examples/glfw.icns | bin | 27988 -> 0 bytes | |||
| -rw-r--r-- | 3rdparty/glfw/source/examples/glfw.ico | bin | 21630 -> 0 bytes | |||
| -rw-r--r-- | 3rdparty/glfw/source/examples/heightmap.c | 513 | ||||
| -rw-r--r-- | 3rdparty/glfw/source/examples/offscreen.c | 178 | ||||
| -rw-r--r-- | 3rdparty/glfw/source/examples/particles.c | 1074 | ||||
| -rw-r--r-- | 3rdparty/glfw/source/examples/sharing.c | 235 | ||||
| -rw-r--r-- | 3rdparty/glfw/source/examples/splitview.c | 547 | ||||
| -rw-r--r-- | 3rdparty/glfw/source/examples/triangle-opengl.c | 171 | ||||
| -rw-r--r-- | 3rdparty/glfw/source/examples/triangle-opengles.c | 170 | ||||
| -rw-r--r-- | 3rdparty/glfw/source/examples/wave.c | 463 | ||||
| -rw-r--r-- | 3rdparty/glfw/source/examples/windows.c | 110 |
14 files changed, 0 insertions, 4590 deletions
diff --git a/3rdparty/glfw/source/examples/CMakeLists.txt b/3rdparty/glfw/source/examples/CMakeLists.txt deleted file mode 100644 index be8927d..0000000 --- a/3rdparty/glfw/source/examples/CMakeLists.txt +++ /dev/null @@ -1,88 +0,0 @@ - -link_libraries(glfw) - -include_directories("${GLFW_SOURCE_DIR}/deps") - -if (MATH_LIBRARY) - link_libraries("${MATH_LIBRARY}") -endif() - -# Workaround for the MS CRT deprecating parts of the standard library -if (MSVC OR CMAKE_C_SIMULATE_ID STREQUAL "MSVC") - add_definitions(-D_CRT_SECURE_NO_WARNINGS) -endif() - -if (WIN32) - set(ICON glfw.rc) -elseif (APPLE) - set(ICON glfw.icns) -endif() - -set(GLAD_GL "${GLFW_SOURCE_DIR}/deps/glad/gl.h") -set(GLAD_GLES2 "${GLFW_SOURCE_DIR}/deps/glad/gles2.h") -set(GETOPT "${GLFW_SOURCE_DIR}/deps/getopt.h" - "${GLFW_SOURCE_DIR}/deps/getopt.c") -set(TINYCTHREAD "${GLFW_SOURCE_DIR}/deps/tinycthread.h" - "${GLFW_SOURCE_DIR}/deps/tinycthread.c") - -add_executable(boing WIN32 MACOSX_BUNDLE boing.c ${ICON} ${GLAD_GL}) -add_executable(gears WIN32 MACOSX_BUNDLE gears.c ${ICON} ${GLAD_GL}) -add_executable(heightmap WIN32 MACOSX_BUNDLE heightmap.c ${ICON} ${GLAD_GL}) -add_executable(offscreen offscreen.c ${ICON} ${GLAD_GL}) -add_executable(particles WIN32 MACOSX_BUNDLE particles.c ${ICON} ${TINYCTHREAD} ${GETOPT} ${GLAD_GL}) -add_executable(sharing WIN32 MACOSX_BUNDLE sharing.c ${ICON} ${GLAD_GL}) -add_executable(splitview WIN32 MACOSX_BUNDLE splitview.c ${ICON} ${GLAD_GL}) -add_executable(triangle-opengl WIN32 MACOSX_BUNDLE triangle-opengl.c ${ICON} ${GLAD_GL}) -add_executable(triangle-opengles WIN32 MACOSX_BUNDLE triangle-opengles.c ${ICON} ${GLAD_GLES2}) -add_executable(wave WIN32 MACOSX_BUNDLE wave.c ${ICON} ${GLAD_GL}) -add_executable(windows WIN32 MACOSX_BUNDLE windows.c ${ICON} ${GLAD_GL}) - -target_link_libraries(particles Threads::Threads) -if (RT_LIBRARY) - target_link_libraries(particles "${RT_LIBRARY}") -endif() - -set(GUI_ONLY_BINARIES boing gears heightmap particles sharing splitview - triangle-opengl triangle-opengles wave windows) -set(CONSOLE_BINARIES offscreen) - -set_target_properties(${GUI_ONLY_BINARIES} ${CONSOLE_BINARIES} PROPERTIES - C_STANDARD 99 - FOLDER "GLFW3/Examples") - -if (GLFW_USE_OSMESA) - find_package(OSMesa REQUIRED) - target_compile_definitions(offscreen PRIVATE USE_NATIVE_OSMESA) -endif() - -if (MSVC) - # Tell MSVC to use main instead of WinMain - set_target_properties(${GUI_ONLY_BINARIES} PROPERTIES - LINK_FLAGS "/ENTRY:mainCRTStartup") -elseif (CMAKE_C_SIMULATE_ID STREQUAL "MSVC") - # Tell Clang using MS CRT to use main instead of WinMain - set_target_properties(${GUI_ONLY_BINARIES} PROPERTIES - LINK_FLAGS "-Wl,/entry:mainCRTStartup") -endif() - -if (APPLE) - set_target_properties(boing PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Boing") - set_target_properties(gears PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Gears") - set_target_properties(heightmap PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Heightmap") - set_target_properties(particles PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Particles") - set_target_properties(sharing PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Sharing") - set_target_properties(triangle-opengl PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "OpenGL Triangle") - set_target_properties(triangle-opengles PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "OpenGL ES Triangle") - set_target_properties(splitview PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "SplitView") - set_target_properties(wave PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Wave") - set_target_properties(windows PROPERTIES MACOSX_BUNDLE_BUNDLE_NAME "Windows") - - set_source_files_properties(glfw.icns PROPERTIES - MACOSX_PACKAGE_LOCATION "Resources") - set_target_properties(${GUI_ONLY_BINARIES} PROPERTIES - MACOSX_BUNDLE_SHORT_VERSION_STRING ${GLFW_VERSION} - MACOSX_BUNDLE_LONG_VERSION_STRING ${GLFW_VERSION} - MACOSX_BUNDLE_ICON_FILE glfw.icns - MACOSX_BUNDLE_INFO_PLIST "${GLFW_SOURCE_DIR}/CMake/Info.plist.in") -endif() - diff --git a/3rdparty/glfw/source/examples/boing.c b/3rdparty/glfw/source/examples/boing.c deleted file mode 100644 index ec118a3..0000000 --- a/3rdparty/glfw/source/examples/boing.c +++ /dev/null @@ -1,680 +0,0 @@ -/***************************************************************************** - * Title: GLBoing - * Desc: Tribute to Amiga Boing. - * Author: Jim Brooks <[email protected]> - * Original Amiga authors were R.J. Mical and Dale Luck. - * GLFW conversion by Marcus Geelnard - * Notes: - 360' = 2*PI [radian] - * - * - Distances between objects are created by doing a relative - * Z translations. - * - * - Although OpenGL enticingly supports alpha-blending, - * the shadow of the original Boing didn't affect the color - * of the grid. - * - * - [Marcus] Changed timing scheme from interval driven to frame- - * time based animation steps (which results in much smoother - * movement) - * - * History of Amiga Boing: - * - * Boing was demonstrated on the prototype Amiga (codenamed "Lorraine") in - * 1985. According to legend, it was written ad-hoc in one night by - * R. J. Mical and Dale Luck. Because the bouncing ball animation was so fast - * and smooth, attendees did not believe the Amiga prototype was really doing - * the rendering. Suspecting a trick, they began looking around the booth for - * a hidden computer or VCR. - *****************************************************************************/ - -#if defined(_MSC_VER) - // Make MS math.h define M_PI - #define _USE_MATH_DEFINES -#endif - -#include <stdio.h> -#include <stdlib.h> -#include <math.h> - -#define GLAD_GL_IMPLEMENTATION -#include <glad/gl.h> -#define GLFW_INCLUDE_NONE -#include <GLFW/glfw3.h> - -#include <linmath.h> - - -/***************************************************************************** - * Various declarations and macros - *****************************************************************************/ - -/* Prototypes */ -void init( void ); -void display( void ); -void reshape( GLFWwindow* window, int w, int h ); -void key_callback( GLFWwindow* window, int key, int scancode, int action, int mods ); -void mouse_button_callback( GLFWwindow* window, int button, int action, int mods ); -void cursor_position_callback( GLFWwindow* window, double x, double y ); -void DrawBoingBall( void ); -void BounceBall( double dt ); -void DrawBoingBallBand( GLfloat long_lo, GLfloat long_hi ); -void DrawGrid( void ); - -#define RADIUS 70.f -#define STEP_LONGITUDE 22.5f /* 22.5 makes 8 bands like original Boing */ -#define STEP_LATITUDE 22.5f - -#define DIST_BALL (RADIUS * 2.f + RADIUS * 0.1f) - -#define VIEW_SCENE_DIST (DIST_BALL * 3.f + 200.f)/* distance from viewer to middle of boing area */ -#define GRID_SIZE (RADIUS * 4.5f) /* length (width) of grid */ -#define BOUNCE_HEIGHT (RADIUS * 2.1f) -#define BOUNCE_WIDTH (RADIUS * 2.1f) - -#define SHADOW_OFFSET_X -20.f -#define SHADOW_OFFSET_Y 10.f -#define SHADOW_OFFSET_Z 0.f - -#define WALL_L_OFFSET 0.f -#define WALL_R_OFFSET 5.f - -/* Animation speed (50.0 mimics the original GLUT demo speed) */ -#define ANIMATION_SPEED 50.f - -/* Maximum allowed delta time per physics iteration */ -#define MAX_DELTA_T 0.02f - -/* Draw ball, or its shadow */ -typedef enum { DRAW_BALL, DRAW_BALL_SHADOW } DRAW_BALL_ENUM; - -/* Vertex type */ -typedef struct {float x; float y; float z;} vertex_t; - -/* Global vars */ -int windowed_xpos, windowed_ypos, windowed_width, windowed_height; -int width, height; -GLfloat deg_rot_y = 0.f; -GLfloat deg_rot_y_inc = 2.f; -int override_pos = GLFW_FALSE; -GLfloat cursor_x = 0.f; -GLfloat cursor_y = 0.f; -GLfloat ball_x = -RADIUS; -GLfloat ball_y = -RADIUS; -GLfloat ball_x_inc = 1.f; -GLfloat ball_y_inc = 2.f; -DRAW_BALL_ENUM drawBallHow; -double t; -double t_old = 0.f; -double dt; - -/* Random number generator */ -#ifndef RAND_MAX - #define RAND_MAX 4095 -#endif - - -/***************************************************************************** - * Truncate a degree. - *****************************************************************************/ -GLfloat TruncateDeg( GLfloat deg ) -{ - if ( deg >= 360.f ) - return (deg - 360.f); - else - return deg; -} - -/***************************************************************************** - * Convert a degree (360-based) into a radian. - * 360' = 2 * PI - *****************************************************************************/ -double deg2rad( double deg ) -{ - return deg / 360 * (2 * M_PI); -} - -/***************************************************************************** - * 360' sin(). - *****************************************************************************/ -double sin_deg( double deg ) -{ - return sin( deg2rad( deg ) ); -} - -/***************************************************************************** - * 360' cos(). - *****************************************************************************/ -double cos_deg( double deg ) -{ - return cos( deg2rad( deg ) ); -} - -/***************************************************************************** - * Compute a cross product (for a normal vector). - * - * c = a x b - *****************************************************************************/ -void CrossProduct( vertex_t a, vertex_t b, vertex_t c, vertex_t *n ) -{ - GLfloat u1, u2, u3; - GLfloat v1, v2, v3; - - u1 = b.x - a.x; - u2 = b.y - a.y; - u3 = b.y - a.z; - - v1 = c.x - a.x; - v2 = c.y - a.y; - v3 = c.z - a.z; - - n->x = u2 * v3 - v2 * u3; - n->y = u3 * v1 - v3 * u1; - n->z = u1 * v2 - v1 * u2; -} - - -#define BOING_DEBUG 0 - - -/***************************************************************************** - * init() - *****************************************************************************/ -void init( void ) -{ - /* - * Clear background. - */ - glClearColor( 0.55f, 0.55f, 0.55f, 0.f ); - - glShadeModel( GL_FLAT ); -} - - -/***************************************************************************** - * display() - *****************************************************************************/ -void display(void) -{ - glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); - glPushMatrix(); - - drawBallHow = DRAW_BALL_SHADOW; - DrawBoingBall(); - - DrawGrid(); - - drawBallHow = DRAW_BALL; - DrawBoingBall(); - - glPopMatrix(); - glFlush(); -} - - -/***************************************************************************** - * reshape() - *****************************************************************************/ -void reshape( GLFWwindow* window, int w, int h ) -{ - mat4x4 projection, view; - - glViewport( 0, 0, (GLsizei)w, (GLsizei)h ); - - glMatrixMode( GL_PROJECTION ); - mat4x4_perspective( projection, - 2.f * (float) atan2( RADIUS, 200.f ), - (float)w / (float)h, - 1.f, VIEW_SCENE_DIST ); - glLoadMatrixf((const GLfloat*) projection); - - glMatrixMode( GL_MODELVIEW ); - { - vec3 eye = { 0.f, 0.f, VIEW_SCENE_DIST }; - vec3 center = { 0.f, 0.f, 0.f }; - vec3 up = { 0.f, -1.f, 0.f }; - mat4x4_look_at( view, eye, center, up ); - } - glLoadMatrixf((const GLfloat*) view); -} - -void key_callback( GLFWwindow* window, int key, int scancode, int action, int mods ) -{ - if (action != GLFW_PRESS) - return; - - if (key == GLFW_KEY_ESCAPE && mods == 0) - glfwSetWindowShouldClose(window, GLFW_TRUE); - if ((key == GLFW_KEY_ENTER && mods == GLFW_MOD_ALT) || - (key == GLFW_KEY_F11 && mods == GLFW_MOD_ALT)) - { - if (glfwGetWindowMonitor(window)) - { - glfwSetWindowMonitor(window, NULL, - windowed_xpos, windowed_ypos, - windowed_width, windowed_height, 0); - } - else - { - GLFWmonitor* monitor = glfwGetPrimaryMonitor(); - if (monitor) - { - const GLFWvidmode* mode = glfwGetVideoMode(monitor); - glfwGetWindowPos(window, &windowed_xpos, &windowed_ypos); - glfwGetWindowSize(window, &windowed_width, &windowed_height); - glfwSetWindowMonitor(window, monitor, 0, 0, mode->width, mode->height, mode->refreshRate); - } - } - } -} - -static void set_ball_pos ( GLfloat x, GLfloat y ) -{ - ball_x = (width / 2) - x; - ball_y = y - (height / 2); -} - -void mouse_button_callback( GLFWwindow* window, int button, int action, int mods ) -{ - if (button != GLFW_MOUSE_BUTTON_LEFT) - return; - - if (action == GLFW_PRESS) - { - override_pos = GLFW_TRUE; - set_ball_pos(cursor_x, cursor_y); - } - else - { - override_pos = GLFW_FALSE; - } -} - -void cursor_position_callback( GLFWwindow* window, double x, double y ) -{ - cursor_x = (float) x; - cursor_y = (float) y; - - if ( override_pos ) - set_ball_pos(cursor_x, cursor_y); -} - -/***************************************************************************** - * Draw the Boing ball. - * - * The Boing ball is sphere in which each facet is a rectangle. - * Facet colors alternate between red and white. - * The ball is built by stacking latitudinal circles. Each circle is composed - * of a widely-separated set of points, so that each facet is noticeably large. - *****************************************************************************/ -void DrawBoingBall( void ) -{ - GLfloat lon_deg; /* degree of longitude */ - double dt_total, dt2; - - glPushMatrix(); - glMatrixMode( GL_MODELVIEW ); - - /* - * Another relative Z translation to separate objects. - */ - glTranslatef( 0.0, 0.0, DIST_BALL ); - - /* Update ball position and rotation (iterate if necessary) */ - dt_total = dt; - while( dt_total > 0.0 ) - { - dt2 = dt_total > MAX_DELTA_T ? MAX_DELTA_T : dt_total; - dt_total -= dt2; - BounceBall( dt2 ); - deg_rot_y = TruncateDeg( deg_rot_y + deg_rot_y_inc*((float)dt2*ANIMATION_SPEED) ); - } - - /* Set ball position */ - glTranslatef( ball_x, ball_y, 0.0 ); - - /* - * Offset the shadow. - */ - if ( drawBallHow == DRAW_BALL_SHADOW ) - { - glTranslatef( SHADOW_OFFSET_X, - SHADOW_OFFSET_Y, - SHADOW_OFFSET_Z ); - } - - /* - * Tilt the ball. - */ - glRotatef( -20.0, 0.0, 0.0, 1.0 ); - - /* - * Continually rotate ball around Y axis. - */ - glRotatef( deg_rot_y, 0.0, 1.0, 0.0 ); - - /* - * Set OpenGL state for Boing ball. - */ - glCullFace( GL_FRONT ); - glEnable( GL_CULL_FACE ); - glEnable( GL_NORMALIZE ); - - /* - * Build a faceted latitude slice of the Boing ball, - * stepping same-sized vertical bands of the sphere. - */ - for ( lon_deg = 0; - lon_deg < 180; - lon_deg += STEP_LONGITUDE ) - { - /* - * Draw a latitude circle at this longitude. - */ - DrawBoingBallBand( lon_deg, - lon_deg + STEP_LONGITUDE ); - } - - glPopMatrix(); - - return; -} - - -/***************************************************************************** - * Bounce the ball. - *****************************************************************************/ -void BounceBall( double delta_t ) -{ - GLfloat sign; - GLfloat deg; - - if ( override_pos ) - return; - - /* Bounce on walls */ - if ( ball_x > (BOUNCE_WIDTH/2 + WALL_R_OFFSET ) ) - { - ball_x_inc = -0.5f - 0.75f * (GLfloat)rand() / (GLfloat)RAND_MAX; - deg_rot_y_inc = -deg_rot_y_inc; - } - if ( ball_x < -(BOUNCE_HEIGHT/2 + WALL_L_OFFSET) ) - { - ball_x_inc = 0.5f + 0.75f * (GLfloat)rand() / (GLfloat)RAND_MAX; - deg_rot_y_inc = -deg_rot_y_inc; - } - - /* Bounce on floor / roof */ - if ( ball_y > BOUNCE_HEIGHT/2 ) - { - ball_y_inc = -0.75f - 1.f * (GLfloat)rand() / (GLfloat)RAND_MAX; - } - if ( ball_y < -BOUNCE_HEIGHT/2*0.85 ) - { - ball_y_inc = 0.75f + 1.f * (GLfloat)rand() / (GLfloat)RAND_MAX; - } - - /* Update ball position */ - ball_x += ball_x_inc * ((float)delta_t*ANIMATION_SPEED); - ball_y += ball_y_inc * ((float)delta_t*ANIMATION_SPEED); - - /* - * Simulate the effects of gravity on Y movement. - */ - if ( ball_y_inc < 0 ) sign = -1.0; else sign = 1.0; - - deg = (ball_y + BOUNCE_HEIGHT/2) * 90 / BOUNCE_HEIGHT; - if ( deg > 80 ) deg = 80; - if ( deg < 10 ) deg = 10; - - ball_y_inc = sign * 4.f * (float) sin_deg( deg ); -} - - -/***************************************************************************** - * Draw a faceted latitude band of the Boing ball. - * - * Parms: long_lo, long_hi - * Low and high longitudes of slice, resp. - *****************************************************************************/ -void DrawBoingBallBand( GLfloat long_lo, - GLfloat long_hi ) -{ - vertex_t vert_ne; /* "ne" means south-east, so on */ - vertex_t vert_nw; - vertex_t vert_sw; - vertex_t vert_se; - vertex_t vert_norm; - GLfloat lat_deg; - static int colorToggle = 0; - - /* - * Iterate through the points of a latitude circle. - * A latitude circle is a 2D set of X,Z points. - */ - for ( lat_deg = 0; - lat_deg <= (360 - STEP_LATITUDE); - lat_deg += STEP_LATITUDE ) - { - /* - * Color this polygon with red or white. - */ - if ( colorToggle ) - glColor3f( 0.8f, 0.1f, 0.1f ); - else - glColor3f( 0.95f, 0.95f, 0.95f ); -#if 0 - if ( lat_deg >= 180 ) - if ( colorToggle ) - glColor3f( 0.1f, 0.8f, 0.1f ); - else - glColor3f( 0.5f, 0.5f, 0.95f ); -#endif - colorToggle = ! colorToggle; - - /* - * Change color if drawing shadow. - */ - if ( drawBallHow == DRAW_BALL_SHADOW ) - glColor3f( 0.35f, 0.35f, 0.35f ); - - /* - * Assign each Y. - */ - vert_ne.y = vert_nw.y = (float) cos_deg(long_hi) * RADIUS; - vert_sw.y = vert_se.y = (float) cos_deg(long_lo) * RADIUS; - - /* - * Assign each X,Z with sin,cos values scaled by latitude radius indexed by longitude. - * Eg, long=0 and long=180 are at the poles, so zero scale is sin(longitude), - * while long=90 (sin(90)=1) is at equator. - */ - vert_ne.x = (float) cos_deg( lat_deg ) * (RADIUS * (float) sin_deg( long_lo + STEP_LONGITUDE )); - vert_se.x = (float) cos_deg( lat_deg ) * (RADIUS * (float) sin_deg( long_lo )); - vert_nw.x = (float) cos_deg( lat_deg + STEP_LATITUDE ) * (RADIUS * (float) sin_deg( long_lo + STEP_LONGITUDE )); - vert_sw.x = (float) cos_deg( lat_deg + STEP_LATITUDE ) * (RADIUS * (float) sin_deg( long_lo )); - - vert_ne.z = (float) sin_deg( lat_deg ) * (RADIUS * (float) sin_deg( long_lo + STEP_LONGITUDE )); - vert_se.z = (float) sin_deg( lat_deg ) * (RADIUS * (float) sin_deg( long_lo )); - vert_nw.z = (float) sin_deg( lat_deg + STEP_LATITUDE ) * (RADIUS * (float) sin_deg( long_lo + STEP_LONGITUDE )); - vert_sw.z = (float) sin_deg( lat_deg + STEP_LATITUDE ) * (RADIUS * (float) sin_deg( long_lo )); - - /* - * Draw the facet. - */ - glBegin( GL_POLYGON ); - - CrossProduct( vert_ne, vert_nw, vert_sw, &vert_norm ); - glNormal3f( vert_norm.x, vert_norm.y, vert_norm.z ); - - glVertex3f( vert_ne.x, vert_ne.y, vert_ne.z ); - glVertex3f( vert_nw.x, vert_nw.y, vert_nw.z ); - glVertex3f( vert_sw.x, vert_sw.y, vert_sw.z ); - glVertex3f( vert_se.x, vert_se.y, vert_se.z ); - - glEnd(); - -#if BOING_DEBUG - printf( "----------------------------------------------------------- \n" ); - printf( "lat = %f long_lo = %f long_hi = %f \n", lat_deg, long_lo, long_hi ); - printf( "vert_ne x = %.8f y = %.8f z = %.8f \n", vert_ne.x, vert_ne.y, vert_ne.z ); - printf( "vert_nw x = %.8f y = %.8f z = %.8f \n", vert_nw.x, vert_nw.y, vert_nw.z ); - printf( "vert_se x = %.8f y = %.8f z = %.8f \n", vert_se.x, vert_se.y, vert_se.z ); - printf( "vert_sw x = %.8f y = %.8f z = %.8f \n", vert_sw.x, vert_sw.y, vert_sw.z ); -#endif - - } - - /* - * Toggle color so that next band will opposite red/white colors than this one. - */ - colorToggle = ! colorToggle; - - /* - * This circular band is done. - */ - return; -} - - -/***************************************************************************** - * Draw the purple grid of lines, behind the Boing ball. - * When the Workbench is dropped to the bottom, Boing shows 12 rows. - *****************************************************************************/ -void DrawGrid( void ) -{ - int row, col; - const int rowTotal = 12; /* must be divisible by 2 */ - const int colTotal = rowTotal; /* must be same as rowTotal */ - const GLfloat widthLine = 2.0; /* should be divisible by 2 */ - const GLfloat sizeCell = GRID_SIZE / rowTotal; - const GLfloat z_offset = -40.0; - GLfloat xl, xr; - GLfloat yt, yb; - - glPushMatrix(); - glDisable( GL_CULL_FACE ); - - /* - * Another relative Z translation to separate objects. - */ - glTranslatef( 0.0, 0.0, DIST_BALL ); - - /* - * Draw vertical lines (as skinny 3D rectangles). - */ - for ( col = 0; col <= colTotal; col++ ) - { - /* - * Compute co-ords of line. - */ - xl = -GRID_SIZE / 2 + col * sizeCell; - xr = xl + widthLine; - - yt = GRID_SIZE / 2; - yb = -GRID_SIZE / 2 - widthLine; - - glBegin( GL_POLYGON ); - - glColor3f( 0.6f, 0.1f, 0.6f ); /* purple */ - - glVertex3f( xr, yt, z_offset ); /* NE */ - glVertex3f( xl, yt, z_offset ); /* NW */ - glVertex3f( xl, yb, z_offset ); /* SW */ - glVertex3f( xr, yb, z_offset ); /* SE */ - - glEnd(); - } - - /* - * Draw horizontal lines (as skinny 3D rectangles). - */ - for ( row = 0; row <= rowTotal; row++ ) - { - /* - * Compute co-ords of line. - */ - yt = GRID_SIZE / 2 - row * sizeCell; - yb = yt - widthLine; - - xl = -GRID_SIZE / 2; - xr = GRID_SIZE / 2 + widthLine; - - glBegin( GL_POLYGON ); - - glColor3f( 0.6f, 0.1f, 0.6f ); /* purple */ - - glVertex3f( xr, yt, z_offset ); /* NE */ - glVertex3f( xl, yt, z_offset ); /* NW */ - glVertex3f( xl, yb, z_offset ); /* SW */ - glVertex3f( xr, yb, z_offset ); /* SE */ - - glEnd(); - } - - glPopMatrix(); - - return; -} - - -/*======================================================================* - * main() - *======================================================================*/ - -int main( void ) -{ - GLFWwindow* window; - - /* Init GLFW */ - if( !glfwInit() ) - exit( EXIT_FAILURE ); - - window = glfwCreateWindow( 400, 400, "Boing (classic Amiga demo)", NULL, NULL ); - if (!window) - { - glfwTerminate(); - exit( EXIT_FAILURE ); - } - - glfwSetWindowAspectRatio(window, 1, 1); - - glfwSetFramebufferSizeCallback(window, reshape); - glfwSetKeyCallback(window, key_callback); - glfwSetMouseButtonCallback(window, mouse_button_callback); - glfwSetCursorPosCallback(window, cursor_position_callback); - - glfwMakeContextCurrent(window); - gladLoadGL(glfwGetProcAddress); - glfwSwapInterval( 1 ); - - glfwGetFramebufferSize(window, &width, &height); - reshape(window, width, height); - - glfwSetTime( 0.0 ); - - init(); - - /* Main loop */ - for (;;) - { - /* Timing */ - t = glfwGetTime(); - dt = t - t_old; - t_old = t; - - /* Draw one frame */ - display(); - - /* Swap buffers */ - glfwSwapBuffers(window); - glfwPollEvents(); - - /* Check if we are still running */ - if (glfwWindowShouldClose(window)) - break; - } - - glfwTerminate(); - exit( EXIT_SUCCESS ); -} - diff --git a/3rdparty/glfw/source/examples/gears.c b/3rdparty/glfw/source/examples/gears.c deleted file mode 100644 index 3d63013..0000000 --- a/3rdparty/glfw/source/examples/gears.c +++ /dev/null @@ -1,361 +0,0 @@ -/* - * 3-D gear wheels. This program is in the public domain. - * - * Command line options: - * -info print GL implementation information - * -exit automatically exit after 30 seconds - * - * - * Brian Paul - * - * - * Marcus Geelnard: - * - Conversion to GLFW - * - Time based rendering (frame rate independent) - * - Slightly modified camera that should work better for stereo viewing - * - * - * Camilla Löwy: - * - Removed FPS counter (this is not a benchmark) - * - Added a few comments - * - Enabled vsync - */ - -#if defined(_MSC_VER) - // Make MS math.h define M_PI - #define _USE_MATH_DEFINES -#endif - -#include <math.h> -#include <stdlib.h> -#include <stdio.h> -#include <string.h> - -#define GLAD_GL_IMPLEMENTATION -#include <glad/gl.h> -#define GLFW_INCLUDE_NONE -#include <GLFW/glfw3.h> - -/** - - Draw a gear wheel. You'll probably want to call this function when - building a display list since we do a lot of trig here. - - Input: inner_radius - radius of hole at center - outer_radius - radius at center of teeth - width - width of gear teeth - number of teeth - tooth_depth - depth of tooth - - **/ - -static void -gear(GLfloat inner_radius, GLfloat outer_radius, GLfloat width, - GLint teeth, GLfloat tooth_depth) -{ - GLint i; - GLfloat r0, r1, r2; - GLfloat angle, da; - GLfloat u, v, len; - - r0 = inner_radius; - r1 = outer_radius - tooth_depth / 2.f; - r2 = outer_radius + tooth_depth / 2.f; - - da = 2.f * (float) M_PI / teeth / 4.f; - - glShadeModel(GL_FLAT); - - glNormal3f(0.f, 0.f, 1.f); - - /* draw front face */ - glBegin(GL_QUAD_STRIP); - for (i = 0; i <= teeth; i++) { - angle = i * 2.f * (float) M_PI / teeth; - glVertex3f(r0 * (float) cos(angle), r0 * (float) sin(angle), width * 0.5f); - glVertex3f(r1 * (float) cos(angle), r1 * (float) sin(angle), width * 0.5f); - if (i < teeth) { - glVertex3f(r0 * (float) cos(angle), r0 * (float) sin(angle), width * 0.5f); - glVertex3f(r1 * (float) cos(angle + 3 * da), r1 * (float) sin(angle + 3 * da), width * 0.5f); - } - } - glEnd(); - - /* draw front sides of teeth */ - glBegin(GL_QUADS); - da = 2.f * (float) M_PI / teeth / 4.f; - for (i = 0; i < teeth; i++) { - angle = i * 2.f * (float) M_PI / teeth; - - glVertex3f(r1 * (float) cos(angle), r1 * (float) sin(angle), width * 0.5f); - glVertex3f(r2 * (float) cos(angle + da), r2 * (float) sin(angle + da), width * 0.5f); - glVertex3f(r2 * (float) cos(angle + 2 * da), r2 * (float) sin(angle + 2 * da), width * 0.5f); - glVertex3f(r1 * (float) cos(angle + 3 * da), r1 * (float) sin(angle + 3 * da), width * 0.5f); - } - glEnd(); - - glNormal3f(0.0, 0.0, -1.0); - - /* draw back face */ - glBegin(GL_QUAD_STRIP); - for (i = 0; i <= teeth; i++) { - angle = i * 2.f * (float) M_PI / teeth; - glVertex3f(r1 * (float) cos(angle), r1 * (float) sin(angle), -width * 0.5f); - glVertex3f(r0 * (float) cos(angle), r0 * (float) sin(angle), -width * 0.5f); - if (i < teeth) { - glVertex3f(r1 * (float) cos(angle + 3 * da), r1 * (float) sin(angle + 3 * da), -width * 0.5f); - glVertex3f(r0 * (float) cos(angle), r0 * (float) sin(angle), -width * 0.5f); - } - } - glEnd(); - - /* draw back sides of teeth */ - glBegin(GL_QUADS); - da = 2.f * (float) M_PI / teeth / 4.f; - for (i = 0; i < teeth; i++) { - angle = i * 2.f * (float) M_PI / teeth; - - glVertex3f(r1 * (float) cos(angle + 3 * da), r1 * (float) sin(angle + 3 * da), -width * 0.5f); - glVertex3f(r2 * (float) cos(angle + 2 * da), r2 * (float) sin(angle + 2 * da), -width * 0.5f); - glVertex3f(r2 * (float) cos(angle + da), r2 * (float) sin(angle + da), -width * 0.5f); - glVertex3f(r1 * (float) cos(angle), r1 * (float) sin(angle), -width * 0.5f); - } - glEnd(); - - /* draw outward faces of teeth */ - glBegin(GL_QUAD_STRIP); - for (i = 0; i < teeth; i++) { - angle = i * 2.f * (float) M_PI / teeth; - - glVertex3f(r1 * (float) cos(angle), r1 * (float) sin(angle), width * 0.5f); - glVertex3f(r1 * (float) cos(angle), r1 * (float) sin(angle), -width * 0.5f); - u = r2 * (float) cos(angle + da) - r1 * (float) cos(angle); - v = r2 * (float) sin(angle + da) - r1 * (float) sin(angle); - len = (float) sqrt(u * u + v * v); - u /= len; - v /= len; - glNormal3f(v, -u, 0.0); - glVertex3f(r2 * (float) cos(angle + da), r2 * (float) sin(angle + da), width * 0.5f); - glVertex3f(r2 * (float) cos(angle + da), r2 * (float) sin(angle + da), -width * 0.5f); - glNormal3f((float) cos(angle), (float) sin(angle), 0.f); - glVertex3f(r2 * (float) cos(angle + 2 * da), r2 * (float) sin(angle + 2 * da), width * 0.5f); - glVertex3f(r2 * (float) cos(angle + 2 * da), r2 * (float) sin(angle + 2 * da), -width * 0.5f); - u = r1 * (float) cos(angle + 3 * da) - r2 * (float) cos(angle + 2 * da); - v = r1 * (float) sin(angle + 3 * da) - r2 * (float) sin(angle + 2 * da); - glNormal3f(v, -u, 0.f); - glVertex3f(r1 * (float) cos(angle + 3 * da), r1 * (float) sin(angle + 3 * da), width * 0.5f); - glVertex3f(r1 * (float) cos(angle + 3 * da), r1 * (float) sin(angle + 3 * da), -width * 0.5f); - glNormal3f((float) cos(angle), (float) sin(angle), 0.f); - } - - glVertex3f(r1 * (float) cos(0), r1 * (float) sin(0), width * 0.5f); - glVertex3f(r1 * (float) cos(0), r1 * (float) sin(0), -width * 0.5f); - - glEnd(); - - glShadeModel(GL_SMOOTH); - - /* draw inside radius cylinder */ - glBegin(GL_QUAD_STRIP); - for (i = 0; i <= teeth; i++) { - angle = i * 2.f * (float) M_PI / teeth; - glNormal3f(-(float) cos(angle), -(float) sin(angle), 0.f); - glVertex3f(r0 * (float) cos(angle), r0 * (float) sin(angle), -width * 0.5f); - glVertex3f(r0 * (float) cos(angle), r0 * (float) sin(angle), width * 0.5f); - } - glEnd(); - -} - - -static GLfloat view_rotx = 20.f, view_roty = 30.f, view_rotz = 0.f; -static GLint gear1, gear2, gear3; -static GLfloat angle = 0.f; - -/* OpenGL draw function & timing */ -static void draw(void) -{ - glClearColor(0.0, 0.0, 0.0, 0.0); - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - glPushMatrix(); - glRotatef(view_rotx, 1.0, 0.0, 0.0); - glRotatef(view_roty, 0.0, 1.0, 0.0); - glRotatef(view_rotz, 0.0, 0.0, 1.0); - - glPushMatrix(); - glTranslatef(-3.0, -2.0, 0.0); - glRotatef(angle, 0.0, 0.0, 1.0); - glCallList(gear1); - glPopMatrix(); - - glPushMatrix(); - glTranslatef(3.1f, -2.f, 0.f); - glRotatef(-2.f * angle - 9.f, 0.f, 0.f, 1.f); - glCallList(gear2); - glPopMatrix(); - - glPushMatrix(); - glTranslatef(-3.1f, 4.2f, 0.f); - glRotatef(-2.f * angle - 25.f, 0.f, 0.f, 1.f); - glCallList(gear3); - glPopMatrix(); - - glPopMatrix(); -} - - -/* update animation parameters */ -static void animate(void) -{ - angle = 100.f * (float) glfwGetTime(); -} - - -/* change view angle, exit upon ESC */ -void key( GLFWwindow* window, int k, int s, int action, int mods ) -{ - if( action != GLFW_PRESS ) return; - - switch (k) { - case GLFW_KEY_Z: - if( mods & GLFW_MOD_SHIFT ) - view_rotz -= 5.0; - else - view_rotz += 5.0; - break; - case GLFW_KEY_ESCAPE: - glfwSetWindowShouldClose(window, GLFW_TRUE); - break; - case GLFW_KEY_UP: - view_rotx += 5.0; - break; - case GLFW_KEY_DOWN: - view_rotx -= 5.0; - break; - case GLFW_KEY_LEFT: - view_roty += 5.0; - break; - case GLFW_KEY_RIGHT: - view_roty -= 5.0; - break; - default: - return; - } -} - - -/* new window size */ -void reshape( GLFWwindow* window, int width, int height ) -{ - GLfloat h = (GLfloat) height / (GLfloat) width; - GLfloat xmax, znear, zfar; - - znear = 5.0f; - zfar = 30.0f; - xmax = znear * 0.5f; - - glViewport( 0, 0, (GLint) width, (GLint) height ); - glMatrixMode( GL_PROJECTION ); - glLoadIdentity(); - glFrustum( -xmax, xmax, -xmax*h, xmax*h, znear, zfar ); - glMatrixMode( GL_MODELVIEW ); - glLoadIdentity(); - glTranslatef( 0.0, 0.0, -20.0 ); -} - - -/* program & OpenGL initialization */ -static void init(void) -{ - static GLfloat pos[4] = {5.f, 5.f, 10.f, 0.f}; - static GLfloat red[4] = {0.8f, 0.1f, 0.f, 1.f}; - static GLfloat green[4] = {0.f, 0.8f, 0.2f, 1.f}; - static GLfloat blue[4] = {0.2f, 0.2f, 1.f, 1.f}; - - glLightfv(GL_LIGHT0, GL_POSITION, pos); - glEnable(GL_CULL_FACE); - glEnable(GL_LIGHTING); - glEnable(GL_LIGHT0); - glEnable(GL_DEPTH_TEST); - - /* make the gears */ - gear1 = glGenLists(1); - glNewList(gear1, GL_COMPILE); - glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, red); - gear(1.f, 4.f, 1.f, 20, 0.7f); - glEndList(); - - gear2 = glGenLists(1); - glNewList(gear2, GL_COMPILE); - glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, green); - gear(0.5f, 2.f, 2.f, 10, 0.7f); - glEndList(); - - gear3 = glGenLists(1); - glNewList(gear3, GL_COMPILE); - glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, blue); - gear(1.3f, 2.f, 0.5f, 10, 0.7f); - glEndList(); - - glEnable(GL_NORMALIZE); -} - - -/* program entry */ -int main(int argc, char *argv[]) -{ - GLFWwindow* window; - int width, height; - - if( !glfwInit() ) - { - fprintf( stderr, "Failed to initialize GLFW\n" ); - exit( EXIT_FAILURE ); - } - - glfwWindowHint(GLFW_DEPTH_BITS, 16); - glfwWindowHint(GLFW_TRANSPARENT_FRAMEBUFFER, GLFW_TRUE); - - window = glfwCreateWindow( 300, 300, "Gears", NULL, NULL ); - if (!window) - { - fprintf( stderr, "Failed to open GLFW window\n" ); - glfwTerminate(); - exit( EXIT_FAILURE ); - } - - // Set callback functions - glfwSetFramebufferSizeCallback(window, reshape); - glfwSetKeyCallback(window, key); - - glfwMakeContextCurrent(window); - gladLoadGL(glfwGetProcAddress); - glfwSwapInterval( 1 ); - - glfwGetFramebufferSize(window, &width, &height); - reshape(window, width, height); - - // Parse command-line options - init(); - - // Main loop - while( !glfwWindowShouldClose(window) ) - { - // Draw gears - draw(); - - // Update animation - animate(); - - // Swap buffers - glfwSwapBuffers(window); - glfwPollEvents(); - } - - // Terminate GLFW - glfwTerminate(); - - // Exit program - exit( EXIT_SUCCESS ); -} - diff --git a/3rdparty/glfw/source/examples/glfw.icns b/3rdparty/glfw/source/examples/glfw.icns Binary files differdeleted file mode 100644 index ad98f39..0000000 --- a/3rdparty/glfw/source/examples/glfw.icns +++ /dev/null diff --git a/3rdparty/glfw/source/examples/glfw.ico b/3rdparty/glfw/source/examples/glfw.ico Binary files differdeleted file mode 100644 index 882a660..0000000 --- a/3rdparty/glfw/source/examples/glfw.ico +++ /dev/null diff --git a/3rdparty/glfw/source/examples/heightmap.c b/3rdparty/glfw/source/examples/heightmap.c deleted file mode 100644 index ad5d47c..0000000 --- a/3rdparty/glfw/source/examples/heightmap.c +++ /dev/null @@ -1,513 +0,0 @@ -//======================================================================== -// Heightmap example program using OpenGL 3 core profile -// Copyright (c) 2010 Olivier Delannoy -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would -// be appreciated but is not required. -// -// 2. Altered source versions must be plainly marked as such, and must not -// be misrepresented as being the original software. -// -// 3. This notice may not be removed or altered from any source -// distribution. -// -//======================================================================== - -#include <stdlib.h> -#include <stdio.h> -#include <math.h> -#include <assert.h> -#include <stddef.h> - -#define GLAD_GL_IMPLEMENTATION -#include <glad/gl.h> -#define GLFW_INCLUDE_NONE -#include <GLFW/glfw3.h> - -/* Map height updates */ -#define MAX_CIRCLE_SIZE (5.0f) -#define MAX_DISPLACEMENT (1.0f) -#define DISPLACEMENT_SIGN_LIMIT (0.3f) -#define MAX_ITER (200) -#define NUM_ITER_AT_A_TIME (1) - -/* Map general information */ -#define MAP_SIZE (10.0f) -#define MAP_NUM_VERTICES (80) -#define MAP_NUM_TOTAL_VERTICES (MAP_NUM_VERTICES*MAP_NUM_VERTICES) -#define MAP_NUM_LINES (3* (MAP_NUM_VERTICES - 1) * (MAP_NUM_VERTICES - 1) + \ - 2 * (MAP_NUM_VERTICES - 1)) - - -/********************************************************************** - * Default shader programs - *********************************************************************/ - -static const char* vertex_shader_text = -"#version 150\n" -"uniform mat4 project;\n" -"uniform mat4 modelview;\n" -"in float x;\n" -"in float y;\n" -"in float z;\n" -"\n" -"void main()\n" -"{\n" -" gl_Position = project * modelview * vec4(x, y, z, 1.0);\n" -"}\n"; - -static const char* fragment_shader_text = -"#version 150\n" -"out vec4 color;\n" -"void main()\n" -"{\n" -" color = vec4(0.2, 1.0, 0.2, 1.0); \n" -"}\n"; - -/********************************************************************** - * Values for shader uniforms - *********************************************************************/ - -/* Frustum configuration */ -static GLfloat view_angle = 45.0f; -static GLfloat aspect_ratio = 4.0f/3.0f; -static GLfloat z_near = 1.0f; -static GLfloat z_far = 100.f; - -/* Projection matrix */ -static GLfloat projection_matrix[16] = { - 1.0f, 0.0f, 0.0f, 0.0f, - 0.0f, 1.0f, 0.0f, 0.0f, - 0.0f, 0.0f, 1.0f, 0.0f, - 0.0f, 0.0f, 0.0f, 1.0f -}; - -/* Model view matrix */ -static GLfloat modelview_matrix[16] = { - 1.0f, 0.0f, 0.0f, 0.0f, - 0.0f, 1.0f, 0.0f, 0.0f, - 0.0f, 0.0f, 1.0f, 0.0f, - 0.0f, 0.0f, 0.0f, 1.0f -}; - -/********************************************************************** - * Heightmap vertex and index data - *********************************************************************/ - -static GLfloat map_vertices[3][MAP_NUM_TOTAL_VERTICES]; -static GLuint map_line_indices[2*MAP_NUM_LINES]; - -/* Store uniform location for the shaders - * Those values are setup as part of the process of creating - * the shader program. They should not be used before creating - * the program. - */ -static GLuint mesh; -static GLuint mesh_vbo[4]; - -/********************************************************************** - * OpenGL helper functions - *********************************************************************/ - -/* Creates a shader object of the specified type using the specified text - */ -static GLuint make_shader(GLenum type, const char* text) -{ - GLuint shader; - GLint shader_ok; - GLsizei log_length; - char info_log[8192]; - - shader = glCreateShader(type); - if (shader != 0) - { - glShaderSource(shader, 1, (const GLchar**)&text, NULL); - glCompileShader(shader); - glGetShaderiv(shader, GL_COMPILE_STATUS, &shader_ok); - if (shader_ok != GL_TRUE) - { - fprintf(stderr, "ERROR: Failed to compile %s shader\n", (type == GL_FRAGMENT_SHADER) ? "fragment" : "vertex" ); - glGetShaderInfoLog(shader, 8192, &log_length,info_log); - fprintf(stderr, "ERROR: \n%s\n\n", info_log); - glDeleteShader(shader); - shader = 0; - } - } - return shader; -} - -/* Creates a program object using the specified vertex and fragment text - */ -static GLuint make_shader_program(const char* vs_text, const char* fs_text) -{ - GLuint program = 0u; - GLint program_ok; - GLuint vertex_shader = 0u; - GLuint fragment_shader = 0u; - GLsizei log_length; - char info_log[8192]; - - vertex_shader = make_shader(GL_VERTEX_SHADER, vs_text); - if (vertex_shader != 0u) - { - fragment_shader = make_shader(GL_FRAGMENT_SHADER, fs_text); - if (fragment_shader != 0u) - { - /* make the program that connect the two shader and link it */ - program = glCreateProgram(); - if (program != 0u) - { - /* attach both shader and link */ - glAttachShader(program, vertex_shader); - glAttachShader(program, fragment_shader); - glLinkProgram(program); - glGetProgramiv(program, GL_LINK_STATUS, &program_ok); - - if (program_ok != GL_TRUE) - { - fprintf(stderr, "ERROR, failed to link shader program\n"); - glGetProgramInfoLog(program, 8192, &log_length, info_log); - fprintf(stderr, "ERROR: \n%s\n\n", info_log); - glDeleteProgram(program); - glDeleteShader(fragment_shader); - glDeleteShader(vertex_shader); - program = 0u; - } - } - } - else - { - fprintf(stderr, "ERROR: Unable to load fragment shader\n"); - glDeleteShader(vertex_shader); - } - } - else - { - fprintf(stderr, "ERROR: Unable to load vertex shader\n"); - } - return program; -} - -/********************************************************************** - * Geometry creation functions - *********************************************************************/ - -/* Generate vertices and indices for the heightmap - */ -static void init_map(void) -{ - int i; - int j; - int k; - GLfloat step = MAP_SIZE / (MAP_NUM_VERTICES - 1); - GLfloat x = 0.0f; - GLfloat z = 0.0f; - /* Create a flat grid */ - k = 0; - for (i = 0 ; i < MAP_NUM_VERTICES ; ++i) - { - for (j = 0 ; j < MAP_NUM_VERTICES ; ++j) - { - map_vertices[0][k] = x; - map_vertices[1][k] = 0.0f; - map_vertices[2][k] = z; - z += step; - ++k; - } - x += step; - z = 0.0f; - } -#if DEBUG_ENABLED - for (i = 0 ; i < MAP_NUM_TOTAL_VERTICES ; ++i) - { - printf ("Vertice %d (%f, %f, %f)\n", - i, map_vertices[0][i], map_vertices[1][i], map_vertices[2][i]); - - } -#endif - /* create indices */ - /* line fan based on i - * i+1 - * | / i + n + 1 - * | / - * |/ - * i --- i + n - */ - - /* close the top of the square */ - k = 0; - for (i = 0 ; i < MAP_NUM_VERTICES -1 ; ++i) - { - map_line_indices[k++] = (i + 1) * MAP_NUM_VERTICES -1; - map_line_indices[k++] = (i + 2) * MAP_NUM_VERTICES -1; - } - /* close the right of the square */ - for (i = 0 ; i < MAP_NUM_VERTICES -1 ; ++i) - { - map_line_indices[k++] = (MAP_NUM_VERTICES - 1) * MAP_NUM_VERTICES + i; - map_line_indices[k++] = (MAP_NUM_VERTICES - 1) * MAP_NUM_VERTICES + i + 1; - } - - for (i = 0 ; i < (MAP_NUM_VERTICES - 1) ; ++i) - { - for (j = 0 ; j < (MAP_NUM_VERTICES - 1) ; ++j) - { - int ref = i * (MAP_NUM_VERTICES) + j; - map_line_indices[k++] = ref; - map_line_indices[k++] = ref + 1; - - map_line_indices[k++] = ref; - map_line_indices[k++] = ref + MAP_NUM_VERTICES; - - map_line_indices[k++] = ref; - map_line_indices[k++] = ref + MAP_NUM_VERTICES + 1; - } - } - -#ifdef DEBUG_ENABLED - for (k = 0 ; k < 2 * MAP_NUM_LINES ; k += 2) - { - int beg, end; - beg = map_line_indices[k]; - end = map_line_indices[k+1]; - printf ("Line %d: %d -> %d (%f, %f, %f) -> (%f, %f, %f)\n", - k / 2, beg, end, - map_vertices[0][beg], map_vertices[1][beg], map_vertices[2][beg], - map_vertices[0][end], map_vertices[1][end], map_vertices[2][end]); - } -#endif -} - -static void generate_heightmap__circle(float* center_x, float* center_y, - float* size, float* displacement) -{ - float sign; - /* random value for element in between [0-1.0] */ - *center_x = (MAP_SIZE * rand()) / (float) RAND_MAX; - *center_y = (MAP_SIZE * rand()) / (float) RAND_MAX; - *size = (MAX_CIRCLE_SIZE * rand()) / (float) RAND_MAX; - sign = (1.0f * rand()) / (float) RAND_MAX; - sign = (sign < DISPLACEMENT_SIGN_LIMIT) ? -1.0f : 1.0f; - *displacement = (sign * (MAX_DISPLACEMENT * rand())) / (float) RAND_MAX; -} - -/* Run the specified number of iterations of the generation process for the - * heightmap - */ -static void update_map(int num_iter) -{ - assert(num_iter > 0); - while(num_iter) - { - /* center of the circle */ - float center_x; - float center_z; - float circle_size; - float disp; - size_t ii; - generate_heightmap__circle(¢er_x, ¢er_z, &circle_size, &disp); - disp = disp / 2.0f; - for (ii = 0u ; ii < MAP_NUM_TOTAL_VERTICES ; ++ii) - { - GLfloat dx = center_x - map_vertices[0][ii]; - GLfloat dz = center_z - map_vertices[2][ii]; - GLfloat pd = (2.0f * (float) sqrt((dx * dx) + (dz * dz))) / circle_size; - if (fabs(pd) <= 1.0f) - { - /* tx,tz is within the circle */ - GLfloat new_height = disp + (float) (cos(pd*3.14f)*disp); - map_vertices[1][ii] += new_height; - } - } - --num_iter; - } -} - -/********************************************************************** - * OpenGL helper functions - *********************************************************************/ - -/* Create VBO, IBO and VAO objects for the heightmap geometry and bind them to - * the specified program object - */ -static void make_mesh(GLuint program) -{ - GLuint attrloc; - - glGenVertexArrays(1, &mesh); - glGenBuffers(4, mesh_vbo); - glBindVertexArray(mesh); - /* Prepare the data for drawing through a buffer inidices */ - glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, mesh_vbo[3]); - glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(GLuint)* MAP_NUM_LINES * 2, map_line_indices, GL_STATIC_DRAW); - - /* Prepare the attributes for rendering */ - attrloc = glGetAttribLocation(program, "x"); - glBindBuffer(GL_ARRAY_BUFFER, mesh_vbo[0]); - glBufferData(GL_ARRAY_BUFFER, sizeof(GLfloat) * MAP_NUM_TOTAL_VERTICES, &map_vertices[0][0], GL_STATIC_DRAW); - glEnableVertexAttribArray(attrloc); - glVertexAttribPointer(attrloc, 1, GL_FLOAT, GL_FALSE, 0, 0); - - attrloc = glGetAttribLocation(program, "z"); - glBindBuffer(GL_ARRAY_BUFFER, mesh_vbo[2]); - glBufferData(GL_ARRAY_BUFFER, sizeof(GLfloat) * MAP_NUM_TOTAL_VERTICES, &map_vertices[2][0], GL_STATIC_DRAW); - glEnableVertexAttribArray(attrloc); - glVertexAttribPointer(attrloc, 1, GL_FLOAT, GL_FALSE, 0, 0); - - attrloc = glGetAttribLocation(program, "y"); - glBindBuffer(GL_ARRAY_BUFFER, mesh_vbo[1]); - glBufferData(GL_ARRAY_BUFFER, sizeof(GLfloat) * MAP_NUM_TOTAL_VERTICES, &map_vertices[1][0], GL_DYNAMIC_DRAW); - glEnableVertexAttribArray(attrloc); - glVertexAttribPointer(attrloc, 1, GL_FLOAT, GL_FALSE, 0, 0); -} - -/* Update VBO vertices from source data - */ -static void update_mesh(void) -{ - glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(GLfloat) * MAP_NUM_TOTAL_VERTICES, &map_vertices[1][0]); -} - -/********************************************************************** - * GLFW callback functions - *********************************************************************/ - -static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods) -{ - switch(key) - { - case GLFW_KEY_ESCAPE: - /* Exit program on Escape */ - glfwSetWindowShouldClose(window, GLFW_TRUE); - break; - } -} - -static void error_callback(int error, const char* description) -{ - fprintf(stderr, "Error: %s\n", description); -} - -int main(int argc, char** argv) -{ - GLFWwindow* window; - int iter; - double dt; - double last_update_time; - int frame; - float f; - GLint uloc_modelview; - GLint uloc_project; - int width, height; - - GLuint shader_program; - - glfwSetErrorCallback(error_callback); - - if (!glfwInit()) - exit(EXIT_FAILURE); - - glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE); - glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); - glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2); - glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); - glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GLFW_TRUE); - - window = glfwCreateWindow(800, 600, "GLFW OpenGL3 Heightmap demo", NULL, NULL); - if (! window ) - { - glfwTerminate(); - exit(EXIT_FAILURE); - } - - /* Register events callback */ - glfwSetKeyCallback(window, key_callback); - - glfwMakeContextCurrent(window); - gladLoadGL(glfwGetProcAddress); - - /* Prepare opengl resources for rendering */ - shader_program = make_shader_program(vertex_shader_text, fragment_shader_text); - - if (shader_program == 0u) - { - glfwTerminate(); - exit(EXIT_FAILURE); - } - - glUseProgram(shader_program); - uloc_project = glGetUniformLocation(shader_program, "project"); - uloc_modelview = glGetUniformLocation(shader_program, "modelview"); - - /* Compute the projection matrix */ - f = 1.0f / tanf(view_angle / 2.0f); - projection_matrix[0] = f / aspect_ratio; - projection_matrix[5] = f; - projection_matrix[10] = (z_far + z_near)/ (z_near - z_far); - projection_matrix[11] = -1.0f; - projection_matrix[14] = 2.0f * (z_far * z_near) / (z_near - z_far); - glUniformMatrix4fv(uloc_project, 1, GL_FALSE, projection_matrix); - - /* Set the camera position */ - modelview_matrix[12] = -5.0f; - modelview_matrix[13] = -5.0f; - modelview_matrix[14] = -20.0f; - glUniformMatrix4fv(uloc_modelview, 1, GL_FALSE, modelview_matrix); - - /* Create mesh data */ - init_map(); - make_mesh(shader_program); - - /* Create vao + vbo to store the mesh */ - /* Create the vbo to store all the information for the grid and the height */ - - /* setup the scene ready for rendering */ - glfwGetFramebufferSize(window, &width, &height); - glViewport(0, 0, width, height); - glClearColor(0.0f, 0.0f, 0.0f, 0.0f); - - /* main loop */ - frame = 0; - iter = 0; - last_update_time = glfwGetTime(); - - while (!glfwWindowShouldClose(window)) - { - ++frame; - /* render the next frame */ - glClear(GL_COLOR_BUFFER_BIT); - glDrawElements(GL_LINES, 2* MAP_NUM_LINES , GL_UNSIGNED_INT, 0); - - /* display and process events through callbacks */ - glfwSwapBuffers(window); - glfwPollEvents(); - /* Check the frame rate and update the heightmap if needed */ - dt = glfwGetTime(); - if ((dt - last_update_time) > 0.2) - { - /* generate the next iteration of the heightmap */ - if (iter < MAX_ITER) - { - update_map(NUM_ITER_AT_A_TIME); - update_mesh(); - iter += NUM_ITER_AT_A_TIME; - } - last_update_time = dt; - frame = 0; - } - } - - glfwTerminate(); - exit(EXIT_SUCCESS); -} - diff --git a/3rdparty/glfw/source/examples/offscreen.c b/3rdparty/glfw/source/examples/offscreen.c deleted file mode 100644 index b7cd2fd..0000000 --- a/3rdparty/glfw/source/examples/offscreen.c +++ /dev/null @@ -1,178 +0,0 @@ -//======================================================================== -// Offscreen rendering example -// Copyright (c) Camilla Löwy <[email protected]> -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would -// be appreciated but is not required. -// -// 2. Altered source versions must be plainly marked as such, and must not -// be misrepresented as being the original software. -// -// 3. This notice may not be removed or altered from any source -// distribution. -// -//======================================================================== - -#define GLAD_GL_IMPLEMENTATION -#include <glad/gl.h> -#define GLFW_INCLUDE_NONE -#include <GLFW/glfw3.h> - -#if USE_NATIVE_OSMESA - #define GLFW_EXPOSE_NATIVE_OSMESA - #include <GLFW/glfw3native.h> -#endif - -#include "linmath.h" - -#include <stdlib.h> -#include <stdio.h> - -#define STB_IMAGE_WRITE_IMPLEMENTATION -#include <stb_image_write.h> - -static const struct -{ - float x, y; - float r, g, b; -} vertices[3] = -{ - { -0.6f, -0.4f, 1.f, 0.f, 0.f }, - { 0.6f, -0.4f, 0.f, 1.f, 0.f }, - { 0.f, 0.6f, 0.f, 0.f, 1.f } -}; - -static const char* vertex_shader_text = -"#version 110\n" -"uniform mat4 MVP;\n" -"attribute vec3 vCol;\n" -"attribute vec2 vPos;\n" -"varying vec3 color;\n" -"void main()\n" -"{\n" -" gl_Position = MVP * vec4(vPos, 0.0, 1.0);\n" -" color = vCol;\n" -"}\n"; - -static const char* fragment_shader_text = -"#version 110\n" -"varying vec3 color;\n" -"void main()\n" -"{\n" -" gl_FragColor = vec4(color, 1.0);\n" -"}\n"; - -static void error_callback(int error, const char* description) -{ - fprintf(stderr, "Error: %s\n", description); -} - -int main(void) -{ - GLFWwindow* window; - GLuint vertex_buffer, vertex_shader, fragment_shader, program; - GLint mvp_location, vpos_location, vcol_location; - float ratio; - int width, height; - mat4x4 mvp; - char* buffer; - - glfwSetErrorCallback(error_callback); - - glfwInitHint(GLFW_COCOA_MENUBAR, GLFW_FALSE); - - if (!glfwInit()) - exit(EXIT_FAILURE); - - glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2); - glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0); - glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE); - - window = glfwCreateWindow(640, 480, "Simple example", NULL, NULL); - if (!window) - { - glfwTerminate(); - exit(EXIT_FAILURE); - } - - glfwMakeContextCurrent(window); - gladLoadGL(glfwGetProcAddress); - - // NOTE: OpenGL error checks have been omitted for brevity - - glGenBuffers(1, &vertex_buffer); - glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer); - glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW); - - vertex_shader = glCreateShader(GL_VERTEX_SHADER); - glShaderSource(vertex_shader, 1, &vertex_shader_text, NULL); - glCompileShader(vertex_shader); - - fragment_shader = glCreateShader(GL_FRAGMENT_SHADER); - glShaderSource(fragment_shader, 1, &fragment_shader_text, NULL); - glCompileShader(fragment_shader); - - program = glCreateProgram(); - glAttachShader(program, vertex_shader); - glAttachShader(program, fragment_shader); - glLinkProgram(program); - - mvp_location = glGetUniformLocation(program, "MVP"); - vpos_location = glGetAttribLocation(program, "vPos"); - vcol_location = glGetAttribLocation(program, "vCol"); - - glEnableVertexAttribArray(vpos_location); - glVertexAttribPointer(vpos_location, 2, GL_FLOAT, GL_FALSE, - sizeof(vertices[0]), (void*) 0); - glEnableVertexAttribArray(vcol_location); - glVertexAttribPointer(vcol_location, 3, GL_FLOAT, GL_FALSE, - sizeof(vertices[0]), (void*) (sizeof(float) * 2)); - - glfwGetFramebufferSize(window, &width, &height); - ratio = width / (float) height; - - glViewport(0, 0, width, height); - glClear(GL_COLOR_BUFFER_BIT); - - mat4x4_ortho(mvp, -ratio, ratio, -1.f, 1.f, 1.f, -1.f); - - glUseProgram(program); - glUniformMatrix4fv(mvp_location, 1, GL_FALSE, (const GLfloat*) mvp); - glDrawArrays(GL_TRIANGLES, 0, 3); - glFinish(); - -#if USE_NATIVE_OSMESA - glfwGetOSMesaColorBuffer(window, &width, &height, NULL, (void**) &buffer); -#else - buffer = calloc(4, width * height); - glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, buffer); -#endif - - // Write image Y-flipped because OpenGL - stbi_write_png("offscreen.png", - width, height, 4, - buffer + (width * 4 * (height - 1)), - -width * 4); - -#if USE_NATIVE_OSMESA - // Here is where there's nothing -#else - free(buffer); -#endif - - glfwDestroyWindow(window); - - glfwTerminate(); - exit(EXIT_SUCCESS); -} - diff --git a/3rdparty/glfw/source/examples/particles.c b/3rdparty/glfw/source/examples/particles.c deleted file mode 100644 index baafe82..0000000 --- a/3rdparty/glfw/source/examples/particles.c +++ /dev/null @@ -1,1074 +0,0 @@ -//======================================================================== -// A simple particle engine with threaded physics -// Copyright (c) Marcus Geelnard -// Copyright (c) Camilla Löwy <[email protected]> -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would -// be appreciated but is not required. -// -// 2. Altered source versions must be plainly marked as such, and must not -// be misrepresented as being the original software. -// -// 3. This notice may not be removed or altered from any source -// distribution. -// -//======================================================================== - -#if defined(_MSC_VER) - // Make MS math.h define M_PI - #define _USE_MATH_DEFINES -#endif - -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <math.h> -#include <time.h> - -#include <tinycthread.h> -#include <getopt.h> -#include <linmath.h> - -#define GLAD_GL_IMPLEMENTATION -#include <glad/gl.h> -#define GLFW_INCLUDE_NONE -#include <GLFW/glfw3.h> - -// Define tokens for GL_EXT_separate_specular_color if not already defined -#ifndef GL_EXT_separate_specular_color -#define GL_LIGHT_MODEL_COLOR_CONTROL_EXT 0x81F8 -#define GL_SINGLE_COLOR_EXT 0x81F9 -#define GL_SEPARATE_SPECULAR_COLOR_EXT 0x81FA -#endif // GL_EXT_separate_specular_color - - -//======================================================================== -// Type definitions -//======================================================================== - -typedef struct -{ - float x, y, z; -} Vec3; - -// This structure is used for interleaved vertex arrays (see the -// draw_particles function) -// -// NOTE: This structure SHOULD be packed on most systems. It uses 32-bit fields -// on 32-bit boundaries, and is a multiple of 64 bits in total (6x32=3x64). If -// it does not work, try using pragmas or whatever to force the structure to be -// packed. -typedef struct -{ - GLfloat s, t; // Texture coordinates - GLuint rgba; // Color (four ubytes packed into an uint) - GLfloat x, y, z; // Vertex coordinates -} Vertex; - - -//======================================================================== -// Program control global variables -//======================================================================== - -// Window dimensions -float aspect_ratio; - -// "wireframe" flag (true if we use wireframe view) -int wireframe; - -// Thread synchronization -struct { - double t; // Time (s) - float dt; // Time since last frame (s) - int p_frame; // Particle physics frame number - int d_frame; // Particle draw frame number - cnd_t p_done; // Condition: particle physics done - cnd_t d_done; // Condition: particle draw done - mtx_t particles_lock; // Particles data sharing mutex -} thread_sync; - - -//======================================================================== -// Texture declarations (we hard-code them into the source code, since -// they are so simple) -//======================================================================== - -#define P_TEX_WIDTH 8 // Particle texture dimensions -#define P_TEX_HEIGHT 8 -#define F_TEX_WIDTH 16 // Floor texture dimensions -#define F_TEX_HEIGHT 16 - -// Texture object IDs -GLuint particle_tex_id, floor_tex_id; - -// Particle texture (a simple spot) -const unsigned char particle_texture[ P_TEX_WIDTH * P_TEX_HEIGHT ] = { - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x11, 0x22, 0x22, 0x11, 0x00, 0x00, - 0x00, 0x11, 0x33, 0x88, 0x77, 0x33, 0x11, 0x00, - 0x00, 0x22, 0x88, 0xff, 0xee, 0x77, 0x22, 0x00, - 0x00, 0x22, 0x77, 0xee, 0xff, 0x88, 0x22, 0x00, - 0x00, 0x11, 0x33, 0x77, 0x88, 0x33, 0x11, 0x00, - 0x00, 0x00, 0x11, 0x33, 0x22, 0x11, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 -}; - -// Floor texture (your basic checkered floor) -const unsigned char floor_texture[ F_TEX_WIDTH * F_TEX_HEIGHT ] = { - 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, - 0xff, 0xf0, 0xcc, 0xf0, 0xf0, 0xf0, 0xff, 0xf0, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, - 0xf0, 0xcc, 0xee, 0xff, 0xf0, 0xf0, 0xf0, 0xf0, 0x30, 0x66, 0x30, 0x30, 0x30, 0x20, 0x30, 0x30, - 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xee, 0xf0, 0xf0, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, - 0xf0, 0xf0, 0xf0, 0xf0, 0xcc, 0xf0, 0xf0, 0xf0, 0x30, 0x30, 0x55, 0x30, 0x30, 0x44, 0x30, 0x30, - 0xf0, 0xdd, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0x33, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, - 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xff, 0xf0, 0xf0, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x60, 0x30, - 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0x33, 0x33, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, - 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x33, 0x30, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, - 0x30, 0x30, 0x30, 0x30, 0x30, 0x20, 0x30, 0x30, 0xf0, 0xff, 0xf0, 0xf0, 0xdd, 0xf0, 0xf0, 0xff, - 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x55, 0x33, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xff, 0xf0, 0xf0, - 0x30, 0x44, 0x66, 0x30, 0x30, 0x30, 0x30, 0x30, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, - 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0xf0, 0xf0, 0xf0, 0xaa, 0xf0, 0xf0, 0xcc, 0xf0, - 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0xff, 0xf0, 0xf0, 0xf0, 0xff, 0xf0, 0xdd, 0xf0, - 0x30, 0x30, 0x30, 0x77, 0x30, 0x30, 0x30, 0x30, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, - 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, -}; - - -//======================================================================== -// These are fixed constants that control the particle engine. In a -// modular world, these values should be variables... -//======================================================================== - -// Maximum number of particles -#define MAX_PARTICLES 3000 - -// Life span of a particle (in seconds) -#define LIFE_SPAN 8.f - -// A new particle is born every [BIRTH_INTERVAL] second -#define BIRTH_INTERVAL (LIFE_SPAN/(float)MAX_PARTICLES) - -// Particle size (meters) -#define PARTICLE_SIZE 0.7f - -// Gravitational constant (m/s^2) -#define GRAVITY 9.8f - -// Base initial velocity (m/s) -#define VELOCITY 8.f - -// Bounce friction (1.0 = no friction, 0.0 = maximum friction) -#define FRICTION 0.75f - -// "Fountain" height (m) -#define FOUNTAIN_HEIGHT 3.f - -// Fountain radius (m) -#define FOUNTAIN_RADIUS 1.6f - -// Minimum delta-time for particle phisics (s) -#define MIN_DELTA_T (BIRTH_INTERVAL * 0.5f) - - -//======================================================================== -// Particle system global variables -//======================================================================== - -// This structure holds all state for a single particle -typedef struct { - float x,y,z; // Position in space - float vx,vy,vz; // Velocity vector - float r,g,b; // Color of particle - float life; // Life of particle (1.0 = newborn, < 0.0 = dead) - int active; // Tells if this particle is active -} PARTICLE; - -// Global vectors holding all particles. We use two vectors for double -// buffering. -static PARTICLE particles[MAX_PARTICLES]; - -// Global variable holding the age of the youngest particle -static float min_age; - -// Color of latest born particle (used for fountain lighting) -static float glow_color[4]; - -// Position of latest born particle (used for fountain lighting) -static float glow_pos[4]; - - -//======================================================================== -// Object material and fog configuration constants -//======================================================================== - -const GLfloat fountain_diffuse[4] = { 0.7f, 1.f, 1.f, 1.f }; -const GLfloat fountain_specular[4] = { 1.f, 1.f, 1.f, 1.f }; -const GLfloat fountain_shininess = 12.f; -const GLfloat floor_diffuse[4] = { 1.f, 0.6f, 0.6f, 1.f }; -const GLfloat floor_specular[4] = { 0.6f, 0.6f, 0.6f, 1.f }; -const GLfloat floor_shininess = 18.f; -const GLfloat fog_color[4] = { 0.1f, 0.1f, 0.1f, 1.f }; - - -//======================================================================== -// Print usage information -//======================================================================== - -static void usage(void) -{ - printf("Usage: particles [-bfhs]\n"); - printf("Options:\n"); - printf(" -f Run in full screen\n"); - printf(" -h Display this help\n"); - printf(" -s Run program as single thread (default is to use two threads)\n"); - printf("\n"); - printf("Program runtime controls:\n"); - printf(" W Toggle wireframe mode\n"); - printf(" Esc Exit program\n"); -} - - -//======================================================================== -// Initialize a new particle -//======================================================================== - -static void init_particle(PARTICLE *p, double t) -{ - float xy_angle, velocity; - - // Start position of particle is at the fountain blow-out - p->x = 0.f; - p->y = 0.f; - p->z = FOUNTAIN_HEIGHT; - - // Start velocity is up (Z)... - p->vz = 0.7f + (0.3f / 4096.f) * (float) (rand() & 4095); - - // ...and a randomly chosen X/Y direction - xy_angle = (2.f * (float) M_PI / 4096.f) * (float) (rand() & 4095); - p->vx = 0.4f * (float) cos(xy_angle); - p->vy = 0.4f * (float) sin(xy_angle); - - // Scale velocity vector according to a time-varying velocity - velocity = VELOCITY * (0.8f + 0.1f * (float) (sin(0.5 * t) + sin(1.31 * t))); - p->vx *= velocity; - p->vy *= velocity; - p->vz *= velocity; - - // Color is time-varying - p->r = 0.7f + 0.3f * (float) sin(0.34 * t + 0.1); - p->g = 0.6f + 0.4f * (float) sin(0.63 * t + 1.1); - p->b = 0.6f + 0.4f * (float) sin(0.91 * t + 2.1); - - // Store settings for fountain glow lighting - glow_pos[0] = 0.4f * (float) sin(1.34 * t); - glow_pos[1] = 0.4f * (float) sin(3.11 * t); - glow_pos[2] = FOUNTAIN_HEIGHT + 1.f; - glow_pos[3] = 1.f; - glow_color[0] = p->r; - glow_color[1] = p->g; - glow_color[2] = p->b; - glow_color[3] = 1.f; - - // The particle is new-born and active - p->life = 1.f; - p->active = 1; -} - - -//======================================================================== -// Update a particle -//======================================================================== - -#define FOUNTAIN_R2 (FOUNTAIN_RADIUS+PARTICLE_SIZE/2)*(FOUNTAIN_RADIUS+PARTICLE_SIZE/2) - -static void update_particle(PARTICLE *p, float dt) -{ - // If the particle is not active, we need not do anything - if (!p->active) - return; - - // The particle is getting older... - p->life -= dt * (1.f / LIFE_SPAN); - - // Did the particle die? - if (p->life <= 0.f) - { - p->active = 0; - return; - } - - // Apply gravity - p->vz = p->vz - GRAVITY * dt; - - // Update particle position - p->x = p->x + p->vx * dt; - p->y = p->y + p->vy * dt; - p->z = p->z + p->vz * dt; - - // Simple collision detection + response - if (p->vz < 0.f) - { - // Particles should bounce on the fountain (with friction) - if ((p->x * p->x + p->y * p->y) < FOUNTAIN_R2 && - p->z < (FOUNTAIN_HEIGHT + PARTICLE_SIZE / 2)) - { - p->vz = -FRICTION * p->vz; - p->z = FOUNTAIN_HEIGHT + PARTICLE_SIZE / 2 + - FRICTION * (FOUNTAIN_HEIGHT + - PARTICLE_SIZE / 2 - p->z); - } - - // Particles should bounce on the floor (with friction) - else if (p->z < PARTICLE_SIZE / 2) - { - p->vz = -FRICTION * p->vz; - p->z = PARTICLE_SIZE / 2 + - FRICTION * (PARTICLE_SIZE / 2 - p->z); - } - } -} - - -//======================================================================== -// The main frame for the particle engine. Called once per frame. -//======================================================================== - -static void particle_engine(double t, float dt) -{ - int i; - float dt2; - - // Update particles (iterated several times per frame if dt is too large) - while (dt > 0.f) - { - // Calculate delta time for this iteration - dt2 = dt < MIN_DELTA_T ? dt : MIN_DELTA_T; - - for (i = 0; i < MAX_PARTICLES; i++) - update_particle(&particles[i], dt2); - - min_age += dt2; - - // Should we create any new particle(s)? - while (min_age >= BIRTH_INTERVAL) - { - min_age -= BIRTH_INTERVAL; - - // Find a dead particle to replace with a new one - for (i = 0; i < MAX_PARTICLES; i++) - { - if (!particles[i].active) - { - init_particle(&particles[i], t + min_age); - update_particle(&particles[i], min_age); - break; - } - } - } - - dt -= dt2; - } -} - - -//======================================================================== -// Draw all active particles. We use OpenGL 1.1 vertex -// arrays for this in order to accelerate the drawing. -//======================================================================== - -#define BATCH_PARTICLES 70 // Number of particles to draw in each batch - // (70 corresponds to 7.5 KB = will not blow - // the L1 data cache on most CPUs) -#define PARTICLE_VERTS 4 // Number of vertices per particle - -static void draw_particles(GLFWwindow* window, double t, float dt) -{ - int i, particle_count; - Vertex vertex_array[BATCH_PARTICLES * PARTICLE_VERTS]; - Vertex* vptr; - float alpha; - GLuint rgba; - Vec3 quad_lower_left, quad_lower_right; - GLfloat mat[16]; - PARTICLE* pptr; - - // Here comes the real trick with flat single primitive objects (s.c. - // "billboards"): We must rotate the textured primitive so that it - // always faces the viewer (is coplanar with the view-plane). - // We: - // 1) Create the primitive around origo (0,0,0) - // 2) Rotate it so that it is coplanar with the view plane - // 3) Translate it according to the particle position - // Note that 1) and 2) is the same for all particles (done only once). - - // Get modelview matrix. We will only use the upper left 3x3 part of - // the matrix, which represents the rotation. - glGetFloatv(GL_MODELVIEW_MATRIX, mat); - - // 1) & 2) We do it in one swift step: - // Although not obvious, the following six lines represent two matrix/ - // vector multiplications. The matrix is the inverse 3x3 rotation - // matrix (i.e. the transpose of the same matrix), and the two vectors - // represent the lower left corner of the quad, PARTICLE_SIZE/2 * - // (-1,-1,0), and the lower right corner, PARTICLE_SIZE/2 * (1,-1,0). - // The upper left/right corners of the quad is always the negative of - // the opposite corners (regardless of rotation). - quad_lower_left.x = (-PARTICLE_SIZE / 2) * (mat[0] + mat[1]); - quad_lower_left.y = (-PARTICLE_SIZE / 2) * (mat[4] + mat[5]); - quad_lower_left.z = (-PARTICLE_SIZE / 2) * (mat[8] + mat[9]); - quad_lower_right.x = (PARTICLE_SIZE / 2) * (mat[0] - mat[1]); - quad_lower_right.y = (PARTICLE_SIZE / 2) * (mat[4] - mat[5]); - quad_lower_right.z = (PARTICLE_SIZE / 2) * (mat[8] - mat[9]); - - // Don't update z-buffer, since all particles are transparent! - glDepthMask(GL_FALSE); - - glEnable(GL_BLEND); - glBlendFunc(GL_SRC_ALPHA, GL_ONE); - - // Select particle texture - if (!wireframe) - { - glEnable(GL_TEXTURE_2D); - glBindTexture(GL_TEXTURE_2D, particle_tex_id); - } - - // Set up vertex arrays. We use interleaved arrays, which is easier to - // handle (in most situations) and it gives a linear memory access - // access pattern (which may give better performance in some - // situations). GL_T2F_C4UB_V3F means: 2 floats for texture coords, - // 4 ubytes for color and 3 floats for vertex coord (in that order). - // Most OpenGL cards / drivers are optimized for this format. - glInterleavedArrays(GL_T2F_C4UB_V3F, 0, vertex_array); - - // Wait for particle physics thread to be done - mtx_lock(&thread_sync.particles_lock); - while (!glfwWindowShouldClose(window) && - thread_sync.p_frame <= thread_sync.d_frame) - { - struct timespec ts; - clock_gettime(CLOCK_REALTIME, &ts); - ts.tv_nsec += 100 * 1000 * 1000; - ts.tv_sec += ts.tv_nsec / (1000 * 1000 * 1000); - ts.tv_nsec %= 1000 * 1000 * 1000; - cnd_timedwait(&thread_sync.p_done, &thread_sync.particles_lock, &ts); - } - - // Store the frame time and delta time for the physics thread - thread_sync.t = t; - thread_sync.dt = dt; - - // Update frame counter - thread_sync.d_frame++; - - // Loop through all particles and build vertex arrays. - particle_count = 0; - vptr = vertex_array; - pptr = particles; - - for (i = 0; i < MAX_PARTICLES; i++) - { - if (pptr->active) - { - // Calculate particle intensity (we set it to max during 75% - // of its life, then it fades out) - alpha = 4.f * pptr->life; - if (alpha > 1.f) - alpha = 1.f; - - // Convert color from float to 8-bit (store it in a 32-bit - // integer using endian independent type casting) - ((GLubyte*) &rgba)[0] = (GLubyte)(pptr->r * 255.f); - ((GLubyte*) &rgba)[1] = (GLubyte)(pptr->g * 255.f); - ((GLubyte*) &rgba)[2] = (GLubyte)(pptr->b * 255.f); - ((GLubyte*) &rgba)[3] = (GLubyte)(alpha * 255.f); - - // 3) Translate the quad to the correct position in modelview - // space and store its parameters in vertex arrays (we also - // store texture coord and color information for each vertex). - - // Lower left corner - vptr->s = 0.f; - vptr->t = 0.f; - vptr->rgba = rgba; - vptr->x = pptr->x + quad_lower_left.x; - vptr->y = pptr->y + quad_lower_left.y; - vptr->z = pptr->z + quad_lower_left.z; - vptr ++; - - // Lower right corner - vptr->s = 1.f; - vptr->t = 0.f; - vptr->rgba = rgba; - vptr->x = pptr->x + quad_lower_right.x; - vptr->y = pptr->y + quad_lower_right.y; - vptr->z = pptr->z + quad_lower_right.z; - vptr ++; - - // Upper right corner - vptr->s = 1.f; - vptr->t = 1.f; - vptr->rgba = rgba; - vptr->x = pptr->x - quad_lower_left.x; - vptr->y = pptr->y - quad_lower_left.y; - vptr->z = pptr->z - quad_lower_left.z; - vptr ++; - - // Upper left corner - vptr->s = 0.f; - vptr->t = 1.f; - vptr->rgba = rgba; - vptr->x = pptr->x - quad_lower_right.x; - vptr->y = pptr->y - quad_lower_right.y; - vptr->z = pptr->z - quad_lower_right.z; - vptr ++; - - // Increase count of drawable particles - particle_count ++; - } - - // If we have filled up one batch of particles, draw it as a set - // of quads using glDrawArrays. - if (particle_count >= BATCH_PARTICLES) - { - // The first argument tells which primitive type we use (QUAD) - // The second argument tells the index of the first vertex (0) - // The last argument is the vertex count - glDrawArrays(GL_QUADS, 0, PARTICLE_VERTS * particle_count); - particle_count = 0; - vptr = vertex_array; - } - - // Next particle - pptr++; - } - - // We are done with the particle data - mtx_unlock(&thread_sync.particles_lock); - cnd_signal(&thread_sync.d_done); - - // Draw final batch of particles (if any) - glDrawArrays(GL_QUADS, 0, PARTICLE_VERTS * particle_count); - - // Disable vertex arrays (Note: glInterleavedArrays implicitly called - // glEnableClientState for vertex, texture coord and color arrays) - glDisableClientState(GL_VERTEX_ARRAY); - glDisableClientState(GL_TEXTURE_COORD_ARRAY); - glDisableClientState(GL_COLOR_ARRAY); - - glDisable(GL_TEXTURE_2D); - glDisable(GL_BLEND); - - glDepthMask(GL_TRUE); -} - - -//======================================================================== -// Fountain geometry specification -//======================================================================== - -#define FOUNTAIN_SIDE_POINTS 14 -#define FOUNTAIN_SWEEP_STEPS 32 - -static const float fountain_side[FOUNTAIN_SIDE_POINTS * 2] = -{ - 1.2f, 0.f, 1.f, 0.2f, 0.41f, 0.3f, 0.4f, 0.35f, - 0.4f, 1.95f, 0.41f, 2.f, 0.8f, 2.2f, 1.2f, 2.4f, - 1.5f, 2.7f, 1.55f,2.95f, 1.6f, 3.f, 1.f, 3.f, - 0.5f, 3.f, 0.f, 3.f -}; - -static const float fountain_normal[FOUNTAIN_SIDE_POINTS * 2] = -{ - 1.0000f, 0.0000f, 0.6428f, 0.7660f, 0.3420f, 0.9397f, 1.0000f, 0.0000f, - 1.0000f, 0.0000f, 0.3420f,-0.9397f, 0.4226f,-0.9063f, 0.5000f,-0.8660f, - 0.7660f,-0.6428f, 0.9063f,-0.4226f, 0.0000f,1.00000f, 0.0000f,1.00000f, - 0.0000f,1.00000f, 0.0000f,1.00000f -}; - - -//======================================================================== -// Draw a fountain -//======================================================================== - -static void draw_fountain(void) -{ - static GLuint fountain_list = 0; - double angle; - float x, y; - int m, n; - - // The first time, we build the fountain display list - if (!fountain_list) - { - fountain_list = glGenLists(1); - glNewList(fountain_list, GL_COMPILE_AND_EXECUTE); - - glMaterialfv(GL_FRONT, GL_DIFFUSE, fountain_diffuse); - glMaterialfv(GL_FRONT, GL_SPECULAR, fountain_specular); - glMaterialf(GL_FRONT, GL_SHININESS, fountain_shininess); - - // Build fountain using triangle strips - for (n = 0; n < FOUNTAIN_SIDE_POINTS - 1; n++) - { - glBegin(GL_TRIANGLE_STRIP); - for (m = 0; m <= FOUNTAIN_SWEEP_STEPS; m++) - { - angle = (double) m * (2.0 * M_PI / (double) FOUNTAIN_SWEEP_STEPS); - x = (float) cos(angle); - y = (float) sin(angle); - - // Draw triangle strip - glNormal3f(x * fountain_normal[n * 2 + 2], - y * fountain_normal[n * 2 + 2], - fountain_normal[n * 2 + 3]); - glVertex3f(x * fountain_side[n * 2 + 2], - y * fountain_side[n * 2 + 2], - fountain_side[n * 2 +3 ]); - glNormal3f(x * fountain_normal[n * 2], - y * fountain_normal[n * 2], - fountain_normal[n * 2 + 1]); - glVertex3f(x * fountain_side[n * 2], - y * fountain_side[n * 2], - fountain_side[n * 2 + 1]); - } - - glEnd(); - } - - glEndList(); - } - else - glCallList(fountain_list); -} - - -//======================================================================== -// Recursive function for building variable tessellated floor -//======================================================================== - -static void tessellate_floor(float x1, float y1, float x2, float y2, int depth) -{ - float delta, x, y; - - // Last recursion? - if (depth >= 5) - delta = 999999.f; - else - { - x = (float) (fabs(x1) < fabs(x2) ? fabs(x1) : fabs(x2)); - y = (float) (fabs(y1) < fabs(y2) ? fabs(y1) : fabs(y2)); - delta = x*x + y*y; - } - - // Recurse further? - if (delta < 0.1f) - { - x = (x1 + x2) * 0.5f; - y = (y1 + y2) * 0.5f; - tessellate_floor(x1, y1, x, y, depth + 1); - tessellate_floor(x, y1, x2, y, depth + 1); - tessellate_floor(x1, y, x, y2, depth + 1); - tessellate_floor(x, y, x2, y2, depth + 1); - } - else - { - glTexCoord2f(x1 * 30.f, y1 * 30.f); - glVertex3f( x1 * 80.f, y1 * 80.f, 0.f); - glTexCoord2f(x2 * 30.f, y1 * 30.f); - glVertex3f( x2 * 80.f, y1 * 80.f, 0.f); - glTexCoord2f(x2 * 30.f, y2 * 30.f); - glVertex3f( x2 * 80.f, y2 * 80.f, 0.f); - glTexCoord2f(x1 * 30.f, y2 * 30.f); - glVertex3f( x1 * 80.f, y2 * 80.f, 0.f); - } -} - - -//======================================================================== -// Draw floor. We build the floor recursively and let the tessellation in the -// center (near x,y=0,0) be high, while the tessellation around the edges be -// low. -//======================================================================== - -static void draw_floor(void) -{ - static GLuint floor_list = 0; - - if (!wireframe) - { - glEnable(GL_TEXTURE_2D); - glBindTexture(GL_TEXTURE_2D, floor_tex_id); - } - - // The first time, we build the floor display list - if (!floor_list) - { - floor_list = glGenLists(1); - glNewList(floor_list, GL_COMPILE_AND_EXECUTE); - - glMaterialfv(GL_FRONT, GL_DIFFUSE, floor_diffuse); - glMaterialfv(GL_FRONT, GL_SPECULAR, floor_specular); - glMaterialf(GL_FRONT, GL_SHININESS, floor_shininess); - - // Draw floor as a bunch of triangle strips (high tessellation - // improves lighting) - glNormal3f(0.f, 0.f, 1.f); - glBegin(GL_QUADS); - tessellate_floor(-1.f, -1.f, 0.f, 0.f, 0); - tessellate_floor( 0.f, -1.f, 1.f, 0.f, 0); - tessellate_floor( 0.f, 0.f, 1.f, 1.f, 0); - tessellate_floor(-1.f, 0.f, 0.f, 1.f, 0); - glEnd(); - - glEndList(); - } - else - glCallList(floor_list); - - glDisable(GL_TEXTURE_2D); - -} - - -//======================================================================== -// Position and configure light sources -//======================================================================== - -static void setup_lights(void) -{ - float l1pos[4], l1amb[4], l1dif[4], l1spec[4]; - float l2pos[4], l2amb[4], l2dif[4], l2spec[4]; - - // Set light source 1 parameters - l1pos[0] = 0.f; l1pos[1] = -9.f; l1pos[2] = 8.f; l1pos[3] = 1.f; - l1amb[0] = 0.2f; l1amb[1] = 0.2f; l1amb[2] = 0.2f; l1amb[3] = 1.f; - l1dif[0] = 0.8f; l1dif[1] = 0.4f; l1dif[2] = 0.2f; l1dif[3] = 1.f; - l1spec[0] = 1.f; l1spec[1] = 0.6f; l1spec[2] = 0.2f; l1spec[3] = 0.f; - - // Set light source 2 parameters - l2pos[0] = -15.f; l2pos[1] = 12.f; l2pos[2] = 1.5f; l2pos[3] = 1.f; - l2amb[0] = 0.f; l2amb[1] = 0.f; l2amb[2] = 0.f; l2amb[3] = 1.f; - l2dif[0] = 0.2f; l2dif[1] = 0.4f; l2dif[2] = 0.8f; l2dif[3] = 1.f; - l2spec[0] = 0.2f; l2spec[1] = 0.6f; l2spec[2] = 1.f; l2spec[3] = 0.f; - - glLightfv(GL_LIGHT1, GL_POSITION, l1pos); - glLightfv(GL_LIGHT1, GL_AMBIENT, l1amb); - glLightfv(GL_LIGHT1, GL_DIFFUSE, l1dif); - glLightfv(GL_LIGHT1, GL_SPECULAR, l1spec); - glLightfv(GL_LIGHT2, GL_POSITION, l2pos); - glLightfv(GL_LIGHT2, GL_AMBIENT, l2amb); - glLightfv(GL_LIGHT2, GL_DIFFUSE, l2dif); - glLightfv(GL_LIGHT2, GL_SPECULAR, l2spec); - glLightfv(GL_LIGHT3, GL_POSITION, glow_pos); - glLightfv(GL_LIGHT3, GL_DIFFUSE, glow_color); - glLightfv(GL_LIGHT3, GL_SPECULAR, glow_color); - - glEnable(GL_LIGHT1); - glEnable(GL_LIGHT2); - glEnable(GL_LIGHT3); -} - - -//======================================================================== -// Main rendering function -//======================================================================== - -static void draw_scene(GLFWwindow* window, double t) -{ - double xpos, ypos, zpos, angle_x, angle_y, angle_z; - static double t_old = 0.0; - float dt; - mat4x4 projection; - - // Calculate frame-to-frame delta time - dt = (float) (t - t_old); - t_old = t; - - mat4x4_perspective(projection, - 65.f * (float) M_PI / 180.f, - aspect_ratio, - 1.0, 60.0); - - glClearColor(0.1f, 0.1f, 0.1f, 1.f); - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - glMatrixMode(GL_PROJECTION); - glLoadMatrixf((const GLfloat*) projection); - - // Setup camera - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - - // Rotate camera - angle_x = 90.0 - 10.0; - angle_y = 10.0 * sin(0.3 * t); - angle_z = 10.0 * t; - glRotated(-angle_x, 1.0, 0.0, 0.0); - glRotated(-angle_y, 0.0, 1.0, 0.0); - glRotated(-angle_z, 0.0, 0.0, 1.0); - - // Translate camera - xpos = 15.0 * sin((M_PI / 180.0) * angle_z) + - 2.0 * sin((M_PI / 180.0) * 3.1 * t); - ypos = -15.0 * cos((M_PI / 180.0) * angle_z) + - 2.0 * cos((M_PI / 180.0) * 2.9 * t); - zpos = 4.0 + 2.0 * cos((M_PI / 180.0) * 4.9 * t); - glTranslated(-xpos, -ypos, -zpos); - - glFrontFace(GL_CCW); - glCullFace(GL_BACK); - glEnable(GL_CULL_FACE); - - setup_lights(); - glEnable(GL_LIGHTING); - - glEnable(GL_FOG); - glFogi(GL_FOG_MODE, GL_EXP); - glFogf(GL_FOG_DENSITY, 0.05f); - glFogfv(GL_FOG_COLOR, fog_color); - - draw_floor(); - - glEnable(GL_DEPTH_TEST); - glDepthFunc(GL_LEQUAL); - glDepthMask(GL_TRUE); - - draw_fountain(); - - glDisable(GL_LIGHTING); - glDisable(GL_FOG); - - // Particles must be drawn after all solid objects have been drawn - draw_particles(window, t, dt); - - // Z-buffer not needed anymore - glDisable(GL_DEPTH_TEST); -} - - -//======================================================================== -// Window resize callback function -//======================================================================== - -static void resize_callback(GLFWwindow* window, int width, int height) -{ - glViewport(0, 0, width, height); - aspect_ratio = height ? width / (float) height : 1.f; -} - - -//======================================================================== -// Key callback functions -//======================================================================== - -static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods) -{ - if (action == GLFW_PRESS) - { - switch (key) - { - case GLFW_KEY_ESCAPE: - glfwSetWindowShouldClose(window, GLFW_TRUE); - break; - case GLFW_KEY_W: - wireframe = !wireframe; - glPolygonMode(GL_FRONT_AND_BACK, - wireframe ? GL_LINE : GL_FILL); - break; - default: - break; - } - } -} - - -//======================================================================== -// Thread for updating particle physics -//======================================================================== - -static int physics_thread_main(void* arg) -{ - GLFWwindow* window = arg; - - for (;;) - { - mtx_lock(&thread_sync.particles_lock); - - // Wait for particle drawing to be done - while (!glfwWindowShouldClose(window) && - thread_sync.p_frame > thread_sync.d_frame) - { - struct timespec ts; - clock_gettime(CLOCK_REALTIME, &ts); - ts.tv_nsec += 100 * 1000 * 1000; - ts.tv_sec += ts.tv_nsec / (1000 * 1000 * 1000); - ts.tv_nsec %= 1000 * 1000 * 1000; - cnd_timedwait(&thread_sync.d_done, &thread_sync.particles_lock, &ts); - } - - if (glfwWindowShouldClose(window)) - break; - - // Update particles - particle_engine(thread_sync.t, thread_sync.dt); - - // Update frame counter - thread_sync.p_frame++; - - // Unlock mutex and signal drawing thread - mtx_unlock(&thread_sync.particles_lock); - cnd_signal(&thread_sync.p_done); - } - - return 0; -} - - -//======================================================================== -// main -//======================================================================== - -int main(int argc, char** argv) -{ - int ch, width, height; - thrd_t physics_thread = 0; - GLFWwindow* window; - GLFWmonitor* monitor = NULL; - - if (!glfwInit()) - { - fprintf(stderr, "Failed to initialize GLFW\n"); - exit(EXIT_FAILURE); - } - - while ((ch = getopt(argc, argv, "fh")) != -1) - { - switch (ch) - { - case 'f': - monitor = glfwGetPrimaryMonitor(); - break; - case 'h': - usage(); - exit(EXIT_SUCCESS); - } - } - - if (monitor) - { - const GLFWvidmode* mode = glfwGetVideoMode(monitor); - - glfwWindowHint(GLFW_RED_BITS, mode->redBits); - glfwWindowHint(GLFW_GREEN_BITS, mode->greenBits); - glfwWindowHint(GLFW_BLUE_BITS, mode->blueBits); - glfwWindowHint(GLFW_REFRESH_RATE, mode->refreshRate); - - width = mode->width; - height = mode->height; - } - else - { - width = 640; - height = 480; - } - - window = glfwCreateWindow(width, height, "Particle Engine", monitor, NULL); - if (!window) - { - fprintf(stderr, "Failed to create GLFW window\n"); - glfwTerminate(); - exit(EXIT_FAILURE); - } - - if (monitor) - glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED); - - glfwMakeContextCurrent(window); - gladLoadGL(glfwGetProcAddress); - glfwSwapInterval(1); - - glfwSetFramebufferSizeCallback(window, resize_callback); - glfwSetKeyCallback(window, key_callback); - - // Set initial aspect ratio - glfwGetFramebufferSize(window, &width, &height); - resize_callback(window, width, height); - - // Upload particle texture - glGenTextures(1, &particle_tex_id); - glBindTexture(GL_TEXTURE_2D, particle_tex_id); - glPixelStorei(GL_UNPACK_ALIGNMENT, 1); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, P_TEX_WIDTH, P_TEX_HEIGHT, - 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, particle_texture); - - // Upload floor texture - glGenTextures(1, &floor_tex_id); - glBindTexture(GL_TEXTURE_2D, floor_tex_id); - glPixelStorei(GL_UNPACK_ALIGNMENT, 1); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, F_TEX_WIDTH, F_TEX_HEIGHT, - 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, floor_texture); - - if (glfwExtensionSupported("GL_EXT_separate_specular_color")) - { - glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL_EXT, - GL_SEPARATE_SPECULAR_COLOR_EXT); - } - - // Set filled polygon mode as default (not wireframe) - glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); - wireframe = 0; - - // Set initial times - thread_sync.t = 0.0; - thread_sync.dt = 0.001f; - thread_sync.p_frame = 0; - thread_sync.d_frame = 0; - - mtx_init(&thread_sync.particles_lock, mtx_timed); - cnd_init(&thread_sync.p_done); - cnd_init(&thread_sync.d_done); - - if (thrd_create(&physics_thread, physics_thread_main, window) != thrd_success) - { - glfwTerminate(); - exit(EXIT_FAILURE); - } - - glfwSetTime(0.0); - - while (!glfwWindowShouldClose(window)) - { - draw_scene(window, glfwGetTime()); - - glfwSwapBuffers(window); - glfwPollEvents(); - } - - thrd_join(physics_thread, NULL); - - glfwDestroyWindow(window); - glfwTerminate(); - - exit(EXIT_SUCCESS); -} - diff --git a/3rdparty/glfw/source/examples/sharing.c b/3rdparty/glfw/source/examples/sharing.c deleted file mode 100644 index d840c58..0000000 --- a/3rdparty/glfw/source/examples/sharing.c +++ /dev/null @@ -1,235 +0,0 @@ -//======================================================================== -// Context sharing example -// Copyright (c) Camilla Löwy <[email protected]> -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would -// be appreciated but is not required. -// -// 2. Altered source versions must be plainly marked as such, and must not -// be misrepresented as being the original software. -// -// 3. This notice may not be removed or altered from any source -// distribution. -// -//======================================================================== - -#define GLAD_GL_IMPLEMENTATION -#include <glad/gl.h> -#define GLFW_INCLUDE_NONE -#include <GLFW/glfw3.h> - -#include <stdio.h> -#include <stdlib.h> - -#include "getopt.h" -#include "linmath.h" - -static const char* vertex_shader_text = -"#version 110\n" -"uniform mat4 MVP;\n" -"attribute vec2 vPos;\n" -"varying vec2 texcoord;\n" -"void main()\n" -"{\n" -" gl_Position = MVP * vec4(vPos, 0.0, 1.0);\n" -" texcoord = vPos;\n" -"}\n"; - -static const char* fragment_shader_text = -"#version 110\n" -"uniform sampler2D texture;\n" -"uniform vec3 color;\n" -"varying vec2 texcoord;\n" -"void main()\n" -"{\n" -" gl_FragColor = vec4(color * texture2D(texture, texcoord).rgb, 1.0);\n" -"}\n"; - -static const vec2 vertices[4] = -{ - { 0.f, 0.f }, - { 1.f, 0.f }, - { 1.f, 1.f }, - { 0.f, 1.f } -}; - -static void error_callback(int error, const char* description) -{ - fprintf(stderr, "Error: %s\n", description); -} - -static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods) -{ - if (action == GLFW_PRESS && key == GLFW_KEY_ESCAPE) - glfwSetWindowShouldClose(window, GLFW_TRUE); -} - -int main(int argc, char** argv) -{ - GLFWwindow* windows[2]; - GLuint texture, program, vertex_buffer; - GLint mvp_location, vpos_location, color_location, texture_location; - - glfwSetErrorCallback(error_callback); - - if (!glfwInit()) - exit(EXIT_FAILURE); - - glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2); - glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0); - - windows[0] = glfwCreateWindow(400, 400, "First", NULL, NULL); - if (!windows[0]) - { - glfwTerminate(); - exit(EXIT_FAILURE); - } - - glfwSetKeyCallback(windows[0], key_callback); - - glfwMakeContextCurrent(windows[0]); - - // Only enable vsync for the first of the windows to be swapped to - // avoid waiting out the interval for each window - glfwSwapInterval(1); - - // The contexts are created with the same APIs so the function - // pointers should be re-usable between them - gladLoadGL(glfwGetProcAddress); - - // Create the OpenGL objects inside the first context, created above - // All objects will be shared with the second context, created below - { - int x, y; - char pixels[16 * 16]; - GLuint vertex_shader, fragment_shader; - - glGenTextures(1, &texture); - glBindTexture(GL_TEXTURE_2D, texture); - - srand((unsigned int) glfwGetTimerValue()); - - for (y = 0; y < 16; y++) - { - for (x = 0; x < 16; x++) - pixels[y * 16 + x] = rand() % 256; - } - - glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, 16, 16, 0, GL_LUMINANCE, GL_UNSIGNED_BYTE, pixels); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); - - vertex_shader = glCreateShader(GL_VERTEX_SHADER); - glShaderSource(vertex_shader, 1, &vertex_shader_text, NULL); - glCompileShader(vertex_shader); - - fragment_shader = glCreateShader(GL_FRAGMENT_SHADER); - glShaderSource(fragment_shader, 1, &fragment_shader_text, NULL); - glCompileShader(fragment_shader); - - program = glCreateProgram(); - glAttachShader(program, vertex_shader); - glAttachShader(program, fragment_shader); - glLinkProgram(program); - - mvp_location = glGetUniformLocation(program, "MVP"); - color_location = glGetUniformLocation(program, "color"); - texture_location = glGetUniformLocation(program, "texture"); - vpos_location = glGetAttribLocation(program, "vPos"); - - glGenBuffers(1, &vertex_buffer); - glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer); - glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW); - } - - glUseProgram(program); - glUniform1i(texture_location, 0); - - glEnable(GL_TEXTURE_2D); - glBindTexture(GL_TEXTURE_2D, texture); - - glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer); - glEnableVertexAttribArray(vpos_location); - glVertexAttribPointer(vpos_location, 2, GL_FLOAT, GL_FALSE, - sizeof(vertices[0]), (void*) 0); - - windows[1] = glfwCreateWindow(400, 400, "Second", NULL, windows[0]); - if (!windows[1]) - { - glfwTerminate(); - exit(EXIT_FAILURE); - } - - // Place the second window to the right of the first - { - int xpos, ypos, left, right, width; - - glfwGetWindowSize(windows[0], &width, NULL); - glfwGetWindowFrameSize(windows[0], &left, NULL, &right, NULL); - glfwGetWindowPos(windows[0], &xpos, &ypos); - - glfwSetWindowPos(windows[1], xpos + width + left + right, ypos); - } - - glfwSetKeyCallback(windows[1], key_callback); - - glfwMakeContextCurrent(windows[1]); - - // While objects are shared, the global context state is not and will - // need to be set up for each context - - glUseProgram(program); - - glEnable(GL_TEXTURE_2D); - glBindTexture(GL_TEXTURE_2D, texture); - - glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer); - glEnableVertexAttribArray(vpos_location); - glVertexAttribPointer(vpos_location, 2, GL_FLOAT, GL_FALSE, - sizeof(vertices[0]), (void*) 0); - - while (!glfwWindowShouldClose(windows[0]) && - !glfwWindowShouldClose(windows[1])) - { - int i; - const vec3 colors[2] = - { - { 0.8f, 0.4f, 1.f }, - { 0.3f, 0.4f, 1.f } - }; - - for (i = 0; i < 2; i++) - { - int width, height; - mat4x4 mvp; - - glfwGetFramebufferSize(windows[i], &width, &height); - glfwMakeContextCurrent(windows[i]); - - glViewport(0, 0, width, height); - - mat4x4_ortho(mvp, 0.f, 1.f, 0.f, 1.f, 0.f, 1.f); - glUniformMatrix4fv(mvp_location, 1, GL_FALSE, (const GLfloat*) mvp); - glUniform3fv(color_location, 1, colors[i]); - glDrawArrays(GL_TRIANGLE_FAN, 0, 4); - - glfwSwapBuffers(windows[i]); - } - - glfwWaitEvents(); - } - - glfwTerminate(); - exit(EXIT_SUCCESS); -} - diff --git a/3rdparty/glfw/source/examples/splitview.c b/3rdparty/glfw/source/examples/splitview.c deleted file mode 100644 index 990df12..0000000 --- a/3rdparty/glfw/source/examples/splitview.c +++ /dev/null @@ -1,547 +0,0 @@ -//======================================================================== -// This is an example program for the GLFW library -// -// The program uses a "split window" view, rendering four views of the -// same scene in one window (e.g. useful for 3D modelling software). This -// demo uses scissors to separate the four different rendering areas from -// each other. -// -// (If the code seems a little bit strange here and there, it may be -// because I am not a friend of orthogonal projections) -//======================================================================== - -#define GLAD_GL_IMPLEMENTATION -#include <glad/gl.h> -#define GLFW_INCLUDE_NONE -#include <GLFW/glfw3.h> - -#if defined(_MSC_VER) - // Make MS math.h define M_PI - #define _USE_MATH_DEFINES -#endif - -#include <math.h> -#include <stdio.h> -#include <stdlib.h> - -#include <linmath.h> - - -//======================================================================== -// Global variables -//======================================================================== - -// Mouse position -static double xpos = 0, ypos = 0; - -// Window size -static int width, height; - -// Active view: 0 = none, 1 = upper left, 2 = upper right, 3 = lower left, -// 4 = lower right -static int active_view = 0; - -// Rotation around each axis -static int rot_x = 0, rot_y = 0, rot_z = 0; - -// Do redraw? -static int do_redraw = 1; - - -//======================================================================== -// Draw a solid torus (use a display list for the model) -//======================================================================== - -#define TORUS_MAJOR 1.5 -#define TORUS_MINOR 0.5 -#define TORUS_MAJOR_RES 32 -#define TORUS_MINOR_RES 32 - -static void drawTorus(void) -{ - static GLuint torus_list = 0; - int i, j, k; - double s, t, x, y, z, nx, ny, nz, scale, twopi; - - if (!torus_list) - { - // Start recording displaylist - torus_list = glGenLists(1); - glNewList(torus_list, GL_COMPILE_AND_EXECUTE); - - // Draw torus - twopi = 2.0 * M_PI; - for (i = 0; i < TORUS_MINOR_RES; i++) - { - glBegin(GL_QUAD_STRIP); - for (j = 0; j <= TORUS_MAJOR_RES; j++) - { - for (k = 1; k >= 0; k--) - { - s = (i + k) % TORUS_MINOR_RES + 0.5; - t = j % TORUS_MAJOR_RES; - - // Calculate point on surface - x = (TORUS_MAJOR + TORUS_MINOR * cos(s * twopi / TORUS_MINOR_RES)) * cos(t * twopi / TORUS_MAJOR_RES); - y = TORUS_MINOR * sin(s * twopi / TORUS_MINOR_RES); - z = (TORUS_MAJOR + TORUS_MINOR * cos(s * twopi / TORUS_MINOR_RES)) * sin(t * twopi / TORUS_MAJOR_RES); - - // Calculate surface normal - nx = x - TORUS_MAJOR * cos(t * twopi / TORUS_MAJOR_RES); - ny = y; - nz = z - TORUS_MAJOR * sin(t * twopi / TORUS_MAJOR_RES); - scale = 1.0 / sqrt(nx*nx + ny*ny + nz*nz); - nx *= scale; - ny *= scale; - nz *= scale; - - glNormal3f((float) nx, (float) ny, (float) nz); - glVertex3f((float) x, (float) y, (float) z); - } - } - - glEnd(); - } - - // Stop recording displaylist - glEndList(); - } - else - { - // Playback displaylist - glCallList(torus_list); - } -} - - -//======================================================================== -// Draw the scene (a rotating torus) -//======================================================================== - -static void drawScene(void) -{ - const GLfloat model_diffuse[4] = {1.0f, 0.8f, 0.8f, 1.0f}; - const GLfloat model_specular[4] = {0.6f, 0.6f, 0.6f, 1.0f}; - const GLfloat model_shininess = 20.0f; - - glPushMatrix(); - - // Rotate the object - glRotatef((GLfloat) rot_x * 0.5f, 1.0f, 0.0f, 0.0f); - glRotatef((GLfloat) rot_y * 0.5f, 0.0f, 1.0f, 0.0f); - glRotatef((GLfloat) rot_z * 0.5f, 0.0f, 0.0f, 1.0f); - - // Set model color (used for orthogonal views, lighting disabled) - glColor4fv(model_diffuse); - - // Set model material (used for perspective view, lighting enabled) - glMaterialfv(GL_FRONT, GL_DIFFUSE, model_diffuse); - glMaterialfv(GL_FRONT, GL_SPECULAR, model_specular); - glMaterialf(GL_FRONT, GL_SHININESS, model_shininess); - - // Draw torus - drawTorus(); - - glPopMatrix(); -} - - -//======================================================================== -// Draw a 2D grid (used for orthogonal views) -//======================================================================== - -static void drawGrid(float scale, int steps) -{ - int i; - float x, y; - mat4x4 view; - - glPushMatrix(); - - // Set background to some dark bluish grey - glClearColor(0.05f, 0.05f, 0.2f, 0.0f); - glClear(GL_COLOR_BUFFER_BIT); - - // Setup modelview matrix (flat XY view) - { - vec3 eye = { 0.f, 0.f, 1.f }; - vec3 center = { 0.f, 0.f, 0.f }; - vec3 up = { 0.f, 1.f, 0.f }; - mat4x4_look_at(view, eye, center, up); - } - glLoadMatrixf((const GLfloat*) view); - - // We don't want to update the Z-buffer - glDepthMask(GL_FALSE); - - // Set grid color - glColor3f(0.0f, 0.5f, 0.5f); - - glBegin(GL_LINES); - - // Horizontal lines - x = scale * 0.5f * (float) (steps - 1); - y = -scale * 0.5f * (float) (steps - 1); - for (i = 0; i < steps; i++) - { - glVertex3f(-x, y, 0.0f); - glVertex3f(x, y, 0.0f); - y += scale; - } - - // Vertical lines - x = -scale * 0.5f * (float) (steps - 1); - y = scale * 0.5f * (float) (steps - 1); - for (i = 0; i < steps; i++) - { - glVertex3f(x, -y, 0.0f); - glVertex3f(x, y, 0.0f); - x += scale; - } - - glEnd(); - - // Enable Z-buffer writing again - glDepthMask(GL_TRUE); - - glPopMatrix(); -} - - -//======================================================================== -// Draw all views -//======================================================================== - -static void drawAllViews(void) -{ - const GLfloat light_position[4] = {0.0f, 8.0f, 8.0f, 1.0f}; - const GLfloat light_diffuse[4] = {1.0f, 1.0f, 1.0f, 1.0f}; - const GLfloat light_specular[4] = {1.0f, 1.0f, 1.0f, 1.0f}; - const GLfloat light_ambient[4] = {0.2f, 0.2f, 0.3f, 1.0f}; - float aspect; - mat4x4 view, projection; - - // Calculate aspect of window - if (height > 0) - aspect = (float) width / (float) height; - else - aspect = 1.f; - - // Clear screen - glClearColor(0.0f, 0.0f, 0.0f, 0.0f); - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - // Enable scissor test - glEnable(GL_SCISSOR_TEST); - - // Enable depth test - glEnable(GL_DEPTH_TEST); - glDepthFunc(GL_LEQUAL); - - // ** ORTHOGONAL VIEWS ** - - // For orthogonal views, use wireframe rendering - glPolygonMode(GL_FRONT_AND_BACK, GL_LINE); - - // Enable line anti-aliasing - glEnable(GL_LINE_SMOOTH); - glEnable(GL_BLEND); - glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); - - // Setup orthogonal projection matrix - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - glOrtho(-3.0 * aspect, 3.0 * aspect, -3.0, 3.0, 1.0, 50.0); - - // Upper left view (TOP VIEW) - glViewport(0, height / 2, width / 2, height / 2); - glScissor(0, height / 2, width / 2, height / 2); - glMatrixMode(GL_MODELVIEW); - { - vec3 eye = { 0.f, 10.f, 1e-3f }; - vec3 center = { 0.f, 0.f, 0.f }; - vec3 up = { 0.f, 1.f, 0.f }; - mat4x4_look_at( view, eye, center, up ); - } - glLoadMatrixf((const GLfloat*) view); - drawGrid(0.5, 12); - drawScene(); - - // Lower left view (FRONT VIEW) - glViewport(0, 0, width / 2, height / 2); - glScissor(0, 0, width / 2, height / 2); - glMatrixMode(GL_MODELVIEW); - { - vec3 eye = { 0.f, 0.f, 10.f }; - vec3 center = { 0.f, 0.f, 0.f }; - vec3 up = { 0.f, 1.f, 0.f }; - mat4x4_look_at( view, eye, center, up ); - } - glLoadMatrixf((const GLfloat*) view); - drawGrid(0.5, 12); - drawScene(); - - // Lower right view (SIDE VIEW) - glViewport(width / 2, 0, width / 2, height / 2); - glScissor(width / 2, 0, width / 2, height / 2); - glMatrixMode(GL_MODELVIEW); - { - vec3 eye = { 10.f, 0.f, 0.f }; - vec3 center = { 0.f, 0.f, 0.f }; - vec3 up = { 0.f, 1.f, 0.f }; - mat4x4_look_at( view, eye, center, up ); - } - glLoadMatrixf((const GLfloat*) view); - drawGrid(0.5, 12); - drawScene(); - - // Disable line anti-aliasing - glDisable(GL_LINE_SMOOTH); - glDisable(GL_BLEND); - - // ** PERSPECTIVE VIEW ** - - // For perspective view, use solid rendering - glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); - - // Enable face culling (faster rendering) - glEnable(GL_CULL_FACE); - glCullFace(GL_BACK); - glFrontFace(GL_CW); - - // Setup perspective projection matrix - glMatrixMode(GL_PROJECTION); - mat4x4_perspective(projection, - 65.f * (float) M_PI / 180.f, - aspect, - 1.f, 50.f); - glLoadMatrixf((const GLfloat*) projection); - - // Upper right view (PERSPECTIVE VIEW) - glViewport(width / 2, height / 2, width / 2, height / 2); - glScissor(width / 2, height / 2, width / 2, height / 2); - glMatrixMode(GL_MODELVIEW); - { - vec3 eye = { 3.f, 1.5f, 3.f }; - vec3 center = { 0.f, 0.f, 0.f }; - vec3 up = { 0.f, 1.f, 0.f }; - mat4x4_look_at( view, eye, center, up ); - } - glLoadMatrixf((const GLfloat*) view); - - // Configure and enable light source 1 - glLightfv(GL_LIGHT1, GL_POSITION, light_position); - glLightfv(GL_LIGHT1, GL_AMBIENT, light_ambient); - glLightfv(GL_LIGHT1, GL_DIFFUSE, light_diffuse); - glLightfv(GL_LIGHT1, GL_SPECULAR, light_specular); - glEnable(GL_LIGHT1); - glEnable(GL_LIGHTING); - - // Draw scene - drawScene(); - - // Disable lighting - glDisable(GL_LIGHTING); - - // Disable face culling - glDisable(GL_CULL_FACE); - - // Disable depth test - glDisable(GL_DEPTH_TEST); - - // Disable scissor test - glDisable(GL_SCISSOR_TEST); - - // Draw a border around the active view - if (active_view > 0 && active_view != 2) - { - glViewport(0, 0, width, height); - - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - glOrtho(0.0, 2.0, 0.0, 2.0, 0.0, 1.0); - - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - glTranslatef((GLfloat) ((active_view - 1) & 1), (GLfloat) (1 - (active_view - 1) / 2), 0.0f); - - glColor3f(1.0f, 1.0f, 0.6f); - - glBegin(GL_LINE_STRIP); - glVertex2i(0, 0); - glVertex2i(1, 0); - glVertex2i(1, 1); - glVertex2i(0, 1); - glVertex2i(0, 0); - glEnd(); - } -} - - -//======================================================================== -// Framebuffer size callback function -//======================================================================== - -static void framebufferSizeFun(GLFWwindow* window, int w, int h) -{ - width = w; - height = h > 0 ? h : 1; - do_redraw = 1; -} - - -//======================================================================== -// Window refresh callback function -//======================================================================== - -static void windowRefreshFun(GLFWwindow* window) -{ - drawAllViews(); - glfwSwapBuffers(window); - do_redraw = 0; -} - - -//======================================================================== -// Mouse position callback function -//======================================================================== - -static void cursorPosFun(GLFWwindow* window, double x, double y) -{ - int wnd_width, wnd_height, fb_width, fb_height; - double scale; - - glfwGetWindowSize(window, &wnd_width, &wnd_height); - glfwGetFramebufferSize(window, &fb_width, &fb_height); - - scale = (double) fb_width / (double) wnd_width; - - x *= scale; - y *= scale; - - // Depending on which view was selected, rotate around different axes - switch (active_view) - { - case 1: - rot_x += (int) (y - ypos); - rot_z += (int) (x - xpos); - do_redraw = 1; - break; - case 3: - rot_x += (int) (y - ypos); - rot_y += (int) (x - xpos); - do_redraw = 1; - break; - case 4: - rot_y += (int) (x - xpos); - rot_z += (int) (y - ypos); - do_redraw = 1; - break; - default: - // Do nothing for perspective view, or if no view is selected - break; - } - - // Remember cursor position - xpos = x; - ypos = y; -} - - -//======================================================================== -// Mouse button callback function -//======================================================================== - -static void mouseButtonFun(GLFWwindow* window, int button, int action, int mods) -{ - if ((button == GLFW_MOUSE_BUTTON_LEFT) && action == GLFW_PRESS) - { - // Detect which of the four views was clicked - active_view = 1; - if (xpos >= width / 2) - active_view += 1; - if (ypos >= height / 2) - active_view += 2; - } - else if (button == GLFW_MOUSE_BUTTON_LEFT) - { - // Deselect any previously selected view - active_view = 0; - } - - do_redraw = 1; -} - -static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods) -{ - if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS) - glfwSetWindowShouldClose(window, GLFW_TRUE); -} - - -//======================================================================== -// main -//======================================================================== - -int main(void) -{ - GLFWwindow* window; - - // Initialise GLFW - if (!glfwInit()) - { - fprintf(stderr, "Failed to initialize GLFW\n"); - exit(EXIT_FAILURE); - } - - glfwWindowHint(GLFW_SAMPLES, 4); - - // Open OpenGL window - window = glfwCreateWindow(500, 500, "Split view demo", NULL, NULL); - if (!window) - { - fprintf(stderr, "Failed to open GLFW window\n"); - - glfwTerminate(); - exit(EXIT_FAILURE); - } - - // Set callback functions - glfwSetFramebufferSizeCallback(window, framebufferSizeFun); - glfwSetWindowRefreshCallback(window, windowRefreshFun); - glfwSetCursorPosCallback(window, cursorPosFun); - glfwSetMouseButtonCallback(window, mouseButtonFun); - glfwSetKeyCallback(window, key_callback); - - // Enable vsync - glfwMakeContextCurrent(window); - gladLoadGL(glfwGetProcAddress); - glfwSwapInterval(1); - - if (GLAD_GL_ARB_multisample || GLAD_GL_VERSION_1_3) - glEnable(GL_MULTISAMPLE_ARB); - - glfwGetFramebufferSize(window, &width, &height); - framebufferSizeFun(window, width, height); - - // Main loop - for (;;) - { - // Only redraw if we need to - if (do_redraw) - windowRefreshFun(window); - - // Wait for new events - glfwWaitEvents(); - - // Check if the window should be closed - if (glfwWindowShouldClose(window)) - break; - } - - // Close OpenGL window and terminate GLFW - glfwTerminate(); - - exit(EXIT_SUCCESS); -} - diff --git a/3rdparty/glfw/source/examples/triangle-opengl.c b/3rdparty/glfw/source/examples/triangle-opengl.c deleted file mode 100644 index ff9e7d3..0000000 --- a/3rdparty/glfw/source/examples/triangle-opengl.c +++ /dev/null @@ -1,171 +0,0 @@ -//======================================================================== -// OpenGL triangle example -// Copyright (c) Camilla Löwy <[email protected]> -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would -// be appreciated but is not required. -// -// 2. Altered source versions must be plainly marked as such, and must not -// be misrepresented as being the original software. -// -// 3. This notice may not be removed or altered from any source -// distribution. -// -//======================================================================== -//! [code] - -#define GLAD_GL_IMPLEMENTATION -#include <glad/gl.h> -#define GLFW_INCLUDE_NONE -#include <GLFW/glfw3.h> - -#include "linmath.h" - -#include <stdlib.h> -#include <stddef.h> -#include <stdio.h> - -typedef struct Vertex -{ - vec2 pos; - vec3 col; -} Vertex; - -static const Vertex vertices[3] = -{ - { { -0.6f, -0.4f }, { 1.f, 0.f, 0.f } }, - { { 0.6f, -0.4f }, { 0.f, 1.f, 0.f } }, - { { 0.f, 0.6f }, { 0.f, 0.f, 1.f } } -}; - -static const char* vertex_shader_text = -"#version 330\n" -"uniform mat4 MVP;\n" -"in vec3 vCol;\n" -"in vec2 vPos;\n" -"out vec3 color;\n" -"void main()\n" -"{\n" -" gl_Position = MVP * vec4(vPos, 0.0, 1.0);\n" -" color = vCol;\n" -"}\n"; - -static const char* fragment_shader_text = -"#version 330\n" -"in vec3 color;\n" -"out vec4 fragment;\n" -"void main()\n" -"{\n" -" fragment = vec4(color, 1.0);\n" -"}\n"; - -static void error_callback(int error, const char* description) -{ - fprintf(stderr, "Error: %s\n", description); -} - -static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods) -{ - if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS) - glfwSetWindowShouldClose(window, GLFW_TRUE); -} - -int main(void) -{ - glfwSetErrorCallback(error_callback); - - if (!glfwInit()) - exit(EXIT_FAILURE); - - glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); - glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3); - glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE); - - GLFWwindow* window = glfwCreateWindow(640, 480, "OpenGL Triangle", NULL, NULL); - if (!window) - { - glfwTerminate(); - exit(EXIT_FAILURE); - } - - glfwSetKeyCallback(window, key_callback); - - glfwMakeContextCurrent(window); - gladLoadGL(glfwGetProcAddress); - glfwSwapInterval(1); - - // NOTE: OpenGL error checks have been omitted for brevity - - GLuint vertex_buffer; - glGenBuffers(1, &vertex_buffer); - glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer); - glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW); - - const GLuint vertex_shader = glCreateShader(GL_VERTEX_SHADER); - glShaderSource(vertex_shader, 1, &vertex_shader_text, NULL); - glCompileShader(vertex_shader); - - const GLuint fragment_shader = glCreateShader(GL_FRAGMENT_SHADER); - glShaderSource(fragment_shader, 1, &fragment_shader_text, NULL); - glCompileShader(fragment_shader); - - const GLuint program = glCreateProgram(); - glAttachShader(program, vertex_shader); - glAttachShader(program, fragment_shader); - glLinkProgram(program); - - const GLint mvp_location = glGetUniformLocation(program, "MVP"); - const GLint vpos_location = glGetAttribLocation(program, "vPos"); - const GLint vcol_location = glGetAttribLocation(program, "vCol"); - - GLuint vertex_array; - glGenVertexArrays(1, &vertex_array); - glBindVertexArray(vertex_array); - glEnableVertexAttribArray(vpos_location); - glVertexAttribPointer(vpos_location, 2, GL_FLOAT, GL_FALSE, - sizeof(Vertex), (void*) offsetof(Vertex, pos)); - glEnableVertexAttribArray(vcol_location); - glVertexAttribPointer(vcol_location, 3, GL_FLOAT, GL_FALSE, - sizeof(Vertex), (void*) offsetof(Vertex, col)); - - while (!glfwWindowShouldClose(window)) - { - int width, height; - glfwGetFramebufferSize(window, &width, &height); - const float ratio = width / (float) height; - - glViewport(0, 0, width, height); - glClear(GL_COLOR_BUFFER_BIT); - - mat4x4 m, p, mvp; - mat4x4_identity(m); - mat4x4_rotate_Z(m, m, (float) glfwGetTime()); - mat4x4_ortho(p, -ratio, ratio, -1.f, 1.f, 1.f, -1.f); - mat4x4_mul(mvp, p, m); - - glUseProgram(program); - glUniformMatrix4fv(mvp_location, 1, GL_FALSE, (const GLfloat*) &mvp); - glBindVertexArray(vertex_array); - glDrawArrays(GL_TRIANGLES, 0, 3); - - glfwSwapBuffers(window); - glfwPollEvents(); - } - - glfwDestroyWindow(window); - - glfwTerminate(); - exit(EXIT_SUCCESS); -} - -//! [code] diff --git a/3rdparty/glfw/source/examples/triangle-opengles.c b/3rdparty/glfw/source/examples/triangle-opengles.c deleted file mode 100644 index 03eb026..0000000 --- a/3rdparty/glfw/source/examples/triangle-opengles.c +++ /dev/null @@ -1,170 +0,0 @@ -//======================================================================== -// OpenGL ES 2.0 triangle example -// Copyright (c) Camilla Löwy <[email protected]> -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would -// be appreciated but is not required. -// -// 2. Altered source versions must be plainly marked as such, and must not -// be misrepresented as being the original software. -// -// 3. This notice may not be removed or altered from any source -// distribution. -// -//======================================================================== - -#define GLAD_GLES2_IMPLEMENTATION -#include <glad/gles2.h> -#define GLFW_INCLUDE_NONE -#include <GLFW/glfw3.h> - -#include "linmath.h" - -#include <stdlib.h> -#include <stddef.h> -#include <stdio.h> - -typedef struct Vertex -{ - vec2 pos; - vec3 col; -} Vertex; - -static const Vertex vertices[3] = -{ - { { -0.6f, -0.4f }, { 1.f, 0.f, 0.f } }, - { { 0.6f, -0.4f }, { 0.f, 1.f, 0.f } }, - { { 0.f, 0.6f }, { 0.f, 0.f, 1.f } } -}; - -static const char* vertex_shader_text = -"#version 100\n" -"precision mediump float;\n" -"uniform mat4 MVP;\n" -"attribute vec3 vCol;\n" -"attribute vec2 vPos;\n" -"varying vec3 color;\n" -"void main()\n" -"{\n" -" gl_Position = MVP * vec4(vPos, 0.0, 1.0);\n" -" color = vCol;\n" -"}\n"; - -static const char* fragment_shader_text = -"#version 100\n" -"precision mediump float;\n" -"varying vec3 color;\n" -"void main()\n" -"{\n" -" gl_FragColor = vec4(color, 1.0);\n" -"}\n"; - -static void error_callback(int error, const char* description) -{ - fprintf(stderr, "GLFW Error: %s\n", description); -} - -static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods) -{ - if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS) - glfwSetWindowShouldClose(window, GLFW_TRUE); -} - -int main(void) -{ - glfwSetErrorCallback(error_callback); - - if (!glfwInit()) - exit(EXIT_FAILURE); - - glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API); - glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2); - glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0); - glfwWindowHint(GLFW_CONTEXT_CREATION_API, GLFW_EGL_CONTEXT_API); - - GLFWwindow* window = glfwCreateWindow(640, 480, "OpenGL ES 2.0 Triangle (EGL)", NULL, NULL); - if (!window) - { - glfwWindowHint(GLFW_CONTEXT_CREATION_API, GLFW_NATIVE_CONTEXT_API); - window = glfwCreateWindow(640, 480, "OpenGL ES 2.0 Triangle", NULL, NULL); - if (!window) - { - glfwTerminate(); - exit(EXIT_FAILURE); - } - } - - glfwSetKeyCallback(window, key_callback); - - glfwMakeContextCurrent(window); - gladLoadGLES2(glfwGetProcAddress); - glfwSwapInterval(1); - - GLuint vertex_buffer; - glGenBuffers(1, &vertex_buffer); - glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer); - glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW); - - const GLuint vertex_shader = glCreateShader(GL_VERTEX_SHADER); - glShaderSource(vertex_shader, 1, &vertex_shader_text, NULL); - glCompileShader(vertex_shader); - - const GLuint fragment_shader = glCreateShader(GL_FRAGMENT_SHADER); - glShaderSource(fragment_shader, 1, &fragment_shader_text, NULL); - glCompileShader(fragment_shader); - - const GLuint program = glCreateProgram(); - glAttachShader(program, vertex_shader); - glAttachShader(program, fragment_shader); - glLinkProgram(program); - - const GLint mvp_location = glGetUniformLocation(program, "MVP"); - const GLint vpos_location = glGetAttribLocation(program, "vPos"); - const GLint vcol_location = glGetAttribLocation(program, "vCol"); - - glEnableVertexAttribArray(vpos_location); - glEnableVertexAttribArray(vcol_location); - glVertexAttribPointer(vpos_location, 2, GL_FLOAT, GL_FALSE, - sizeof(Vertex), (void*) offsetof(Vertex, pos)); - glVertexAttribPointer(vcol_location, 3, GL_FLOAT, GL_FALSE, - sizeof(Vertex), (void*) offsetof(Vertex, col)); - - while (!glfwWindowShouldClose(window)) - { - int width, height; - glfwGetFramebufferSize(window, &width, &height); - const float ratio = width / (float) height; - - glViewport(0, 0, width, height); - glClear(GL_COLOR_BUFFER_BIT); - - mat4x4 m, p, mvp; - mat4x4_identity(m); - mat4x4_rotate_Z(m, m, (float) glfwGetTime()); - mat4x4_ortho(p, -ratio, ratio, -1.f, 1.f, 1.f, -1.f); - mat4x4_mul(mvp, p, m); - - glUseProgram(program); - glUniformMatrix4fv(mvp_location, 1, GL_FALSE, (const GLfloat*) &mvp); - glDrawArrays(GL_TRIANGLES, 0, 3); - - glfwSwapBuffers(window); - glfwPollEvents(); - } - - glfwDestroyWindow(window); - - glfwTerminate(); - exit(EXIT_SUCCESS); -} - diff --git a/3rdparty/glfw/source/examples/wave.c b/3rdparty/glfw/source/examples/wave.c deleted file mode 100644 index d7ead49..0000000 --- a/3rdparty/glfw/source/examples/wave.c +++ /dev/null @@ -1,463 +0,0 @@ -/***************************************************************************** - * Wave Simulation in OpenGL - * (C) 2002 Jakob Thomsen - * http://home.in.tum.de/~thomsen - * Modified for GLFW by Sylvain Hellegouarch - [email protected] - * Modified for variable frame rate by Marcus Geelnard - * 2003-Jan-31: Minor cleanups and speedups / MG - * 2010-10-24: Formatting and cleanup - Camilla Löwy - *****************************************************************************/ - -#if defined(_MSC_VER) - // Make MS math.h define M_PI - #define _USE_MATH_DEFINES -#endif - -#include <stdio.h> -#include <stdlib.h> -#include <math.h> - -#define GLAD_GL_IMPLEMENTATION -#include <glad/gl.h> -#define GLFW_INCLUDE_NONE -#include <GLFW/glfw3.h> - -#include <linmath.h> - -// Maximum delta T to allow for differential calculations -#define MAX_DELTA_T 0.01 - -// Animation speed (10.0 looks good) -#define ANIMATION_SPEED 10.0 - -GLfloat alpha = 210.f, beta = -70.f; -GLfloat zoom = 2.f; - -double cursorX; -double cursorY; - -struct Vertex -{ - GLfloat x, y, z; - GLfloat r, g, b; -}; - -#define GRIDW 50 -#define GRIDH 50 -#define VERTEXNUM (GRIDW*GRIDH) - -#define QUADW (GRIDW - 1) -#define QUADH (GRIDH - 1) -#define QUADNUM (QUADW*QUADH) - -GLuint quad[4 * QUADNUM]; -struct Vertex vertex[VERTEXNUM]; - -/* The grid will look like this: - * - * 3 4 5 - * *---*---* - * | | | - * | 0 | 1 | - * | | | - * *---*---* - * 0 1 2 - */ - -//======================================================================== -// Initialize grid geometry -//======================================================================== - -void init_vertices(void) -{ - int x, y, p; - - // Place the vertices in a grid - for (y = 0; y < GRIDH; y++) - { - for (x = 0; x < GRIDW; x++) - { - p = y * GRIDW + x; - - vertex[p].x = (GLfloat) (x - GRIDW / 2) / (GLfloat) (GRIDW / 2); - vertex[p].y = (GLfloat) (y - GRIDH / 2) / (GLfloat) (GRIDH / 2); - vertex[p].z = 0; - - if ((x % 4 < 2) ^ (y % 4 < 2)) - vertex[p].r = 0.0; - else - vertex[p].r = 1.0; - - vertex[p].g = (GLfloat) y / (GLfloat) GRIDH; - vertex[p].b = 1.f - ((GLfloat) x / (GLfloat) GRIDW + (GLfloat) y / (GLfloat) GRIDH) / 2.f; - } - } - - for (y = 0; y < QUADH; y++) - { - for (x = 0; x < QUADW; x++) - { - p = 4 * (y * QUADW + x); - - quad[p + 0] = y * GRIDW + x; // Some point - quad[p + 1] = y * GRIDW + x + 1; // Neighbor at the right side - quad[p + 2] = (y + 1) * GRIDW + x + 1; // Upper right neighbor - quad[p + 3] = (y + 1) * GRIDW + x; // Upper neighbor - } - } -} - -double dt; -double p[GRIDW][GRIDH]; -double vx[GRIDW][GRIDH], vy[GRIDW][GRIDH]; -double ax[GRIDW][GRIDH], ay[GRIDW][GRIDH]; - -//======================================================================== -// Initialize grid -//======================================================================== - -void init_grid(void) -{ - int x, y; - double dx, dy, d; - - for (y = 0; y < GRIDH; y++) - { - for (x = 0; x < GRIDW; x++) - { - dx = (double) (x - GRIDW / 2); - dy = (double) (y - GRIDH / 2); - d = sqrt(dx * dx + dy * dy); - if (d < 0.1 * (double) (GRIDW / 2)) - { - d = d * 10.0; - p[x][y] = -cos(d * (M_PI / (double)(GRIDW * 4))) * 100.0; - } - else - p[x][y] = 0.0; - - vx[x][y] = 0.0; - vy[x][y] = 0.0; - } - } -} - - -//======================================================================== -// Draw scene -//======================================================================== - -void draw_scene(GLFWwindow* window) -{ - // Clear the color and depth buffers - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - // We don't want to modify the projection matrix - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - - // Move back - glTranslatef(0.0, 0.0, -zoom); - // Rotate the view - glRotatef(beta, 1.0, 0.0, 0.0); - glRotatef(alpha, 0.0, 0.0, 1.0); - - glDrawElements(GL_QUADS, 4 * QUADNUM, GL_UNSIGNED_INT, quad); - - glfwSwapBuffers(window); -} - - -//======================================================================== -// Initialize Miscellaneous OpenGL state -//======================================================================== - -void init_opengl(void) -{ - // Use Gouraud (smooth) shading - glShadeModel(GL_SMOOTH); - - // Switch on the z-buffer - glEnable(GL_DEPTH_TEST); - - glEnableClientState(GL_VERTEX_ARRAY); - glEnableClientState(GL_COLOR_ARRAY); - glVertexPointer(3, GL_FLOAT, sizeof(struct Vertex), vertex); - glColorPointer(3, GL_FLOAT, sizeof(struct Vertex), &vertex[0].r); // Pointer to the first color - - glPointSize(2.0); - - // Background color is black - glClearColor(0, 0, 0, 0); -} - - -//======================================================================== -// Modify the height of each vertex according to the pressure -//======================================================================== - -void adjust_grid(void) -{ - int pos; - int x, y; - - for (y = 0; y < GRIDH; y++) - { - for (x = 0; x < GRIDW; x++) - { - pos = y * GRIDW + x; - vertex[pos].z = (float) (p[x][y] * (1.0 / 50.0)); - } - } -} - - -//======================================================================== -// Calculate wave propagation -//======================================================================== - -void calc_grid(void) -{ - int x, y, x2, y2; - double time_step = dt * ANIMATION_SPEED; - - // Compute accelerations - for (x = 0; x < GRIDW; x++) - { - x2 = (x + 1) % GRIDW; - for(y = 0; y < GRIDH; y++) - ax[x][y] = p[x][y] - p[x2][y]; - } - - for (y = 0; y < GRIDH; y++) - { - y2 = (y + 1) % GRIDH; - for(x = 0; x < GRIDW; x++) - ay[x][y] = p[x][y] - p[x][y2]; - } - - // Compute speeds - for (x = 0; x < GRIDW; x++) - { - for (y = 0; y < GRIDH; y++) - { - vx[x][y] = vx[x][y] + ax[x][y] * time_step; - vy[x][y] = vy[x][y] + ay[x][y] * time_step; - } - } - - // Compute pressure - for (x = 1; x < GRIDW; x++) - { - x2 = x - 1; - for (y = 1; y < GRIDH; y++) - { - y2 = y - 1; - p[x][y] = p[x][y] + (vx[x2][y] - vx[x][y] + vy[x][y2] - vy[x][y]) * time_step; - } - } -} - - -//======================================================================== -// Print errors -//======================================================================== - -static void error_callback(int error, const char* description) -{ - fprintf(stderr, "Error: %s\n", description); -} - - -//======================================================================== -// Handle key strokes -//======================================================================== - -void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods) -{ - if (action != GLFW_PRESS) - return; - - switch (key) - { - case GLFW_KEY_ESCAPE: - glfwSetWindowShouldClose(window, GLFW_TRUE); - break; - case GLFW_KEY_SPACE: - init_grid(); - break; - case GLFW_KEY_LEFT: - alpha += 5; - break; - case GLFW_KEY_RIGHT: - alpha -= 5; - break; - case GLFW_KEY_UP: - beta -= 5; - break; - case GLFW_KEY_DOWN: - beta += 5; - break; - case GLFW_KEY_PAGE_UP: - zoom -= 0.25f; - if (zoom < 0.f) - zoom = 0.f; - break; - case GLFW_KEY_PAGE_DOWN: - zoom += 0.25f; - break; - default: - break; - } -} - - -//======================================================================== -// Callback function for mouse button events -//======================================================================== - -void mouse_button_callback(GLFWwindow* window, int button, int action, int mods) -{ - if (button != GLFW_MOUSE_BUTTON_LEFT) - return; - - if (action == GLFW_PRESS) - { - glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED); - glfwGetCursorPos(window, &cursorX, &cursorY); - } - else - glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_NORMAL); -} - - -//======================================================================== -// Callback function for cursor motion events -//======================================================================== - -void cursor_position_callback(GLFWwindow* window, double x, double y) -{ - if (glfwGetInputMode(window, GLFW_CURSOR) == GLFW_CURSOR_DISABLED) - { - alpha += (GLfloat) (x - cursorX) / 10.f; - beta += (GLfloat) (y - cursorY) / 10.f; - - cursorX = x; - cursorY = y; - } -} - - -//======================================================================== -// Callback function for scroll events -//======================================================================== - -void scroll_callback(GLFWwindow* window, double x, double y) -{ - zoom += (float) y / 4.f; - if (zoom < 0) - zoom = 0; -} - - -//======================================================================== -// Callback function for framebuffer resize events -//======================================================================== - -void framebuffer_size_callback(GLFWwindow* window, int width, int height) -{ - float ratio = 1.f; - mat4x4 projection; - - if (height > 0) - ratio = (float) width / (float) height; - - // Setup viewport - glViewport(0, 0, width, height); - - // Change to the projection matrix and set our viewing volume - glMatrixMode(GL_PROJECTION); - mat4x4_perspective(projection, - 60.f * (float) M_PI / 180.f, - ratio, - 1.f, 1024.f); - glLoadMatrixf((const GLfloat*) projection); -} - - -//======================================================================== -// main -//======================================================================== - -int main(int argc, char* argv[]) -{ - GLFWwindow* window; - double t, dt_total, t_old; - int width, height; - - glfwSetErrorCallback(error_callback); - - if (!glfwInit()) - exit(EXIT_FAILURE); - - window = glfwCreateWindow(640, 480, "Wave Simulation", NULL, NULL); - if (!window) - { - glfwTerminate(); - exit(EXIT_FAILURE); - } - - glfwSetKeyCallback(window, key_callback); - glfwSetFramebufferSizeCallback(window, framebuffer_size_callback); - glfwSetMouseButtonCallback(window, mouse_button_callback); - glfwSetCursorPosCallback(window, cursor_position_callback); - glfwSetScrollCallback(window, scroll_callback); - - glfwMakeContextCurrent(window); - gladLoadGL(glfwGetProcAddress); - glfwSwapInterval(1); - - glfwGetFramebufferSize(window, &width, &height); - framebuffer_size_callback(window, width, height); - - // Initialize OpenGL - init_opengl(); - - // Initialize simulation - init_vertices(); - init_grid(); - adjust_grid(); - - // Initialize timer - t_old = glfwGetTime() - 0.01; - - while (!glfwWindowShouldClose(window)) - { - t = glfwGetTime(); - dt_total = t - t_old; - t_old = t; - - // Safety - iterate if dt_total is too large - while (dt_total > 0.f) - { - // Select iteration time step - dt = dt_total > MAX_DELTA_T ? MAX_DELTA_T : dt_total; - dt_total -= dt; - - // Calculate wave propagation - calc_grid(); - } - - // Compute height of each vertex - adjust_grid(); - - // Draw wave grid to OpenGL display - draw_scene(window); - - glfwPollEvents(); - } - - glfwTerminate(); - exit(EXIT_SUCCESS); -} - diff --git a/3rdparty/glfw/source/examples/windows.c b/3rdparty/glfw/source/examples/windows.c deleted file mode 100644 index 598e521..0000000 --- a/3rdparty/glfw/source/examples/windows.c +++ /dev/null @@ -1,110 +0,0 @@ -//======================================================================== -// Simple multi-window example -// Copyright (c) Camilla Löwy <[email protected]> -// -// This software is provided 'as-is', without any express or implied -// warranty. In no event will the authors be held liable for any damages -// arising from the use of this software. -// -// Permission is granted to anyone to use this software for any purpose, -// including commercial applications, and to alter it and redistribute it -// freely, subject to the following restrictions: -// -// 1. The origin of this software must not be misrepresented; you must not -// claim that you wrote the original software. If you use this software -// in a product, an acknowledgment in the product documentation would -// be appreciated but is not required. -// -// 2. Altered source versions must be plainly marked as such, and must not -// be misrepresented as being the original software. -// -// 3. This notice may not be removed or altered from any source -// distribution. -// -//======================================================================== - -#define GLAD_GL_IMPLEMENTATION -#include <glad/gl.h> -#define GLFW_INCLUDE_NONE -#include <GLFW/glfw3.h> - -#include <stdio.h> -#include <stdlib.h> - -int main(int argc, char** argv) -{ - int xpos, ypos, height; - const char* description; - GLFWwindow* windows[4]; - - if (!glfwInit()) - { - glfwGetError(&description); - printf("Error: %s\n", description); - exit(EXIT_FAILURE); - } - - glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE); - glfwWindowHint(GLFW_DECORATED, GLFW_FALSE); - - glfwGetMonitorWorkarea(glfwGetPrimaryMonitor(), &xpos, &ypos, NULL, &height); - - for (int i = 0; i < 4; i++) - { - const int size = height / 5; - const struct - { - float r, g, b; - } colors[] = - { - { 0.95f, 0.32f, 0.11f }, - { 0.50f, 0.80f, 0.16f }, - { 0.f, 0.68f, 0.94f }, - { 0.98f, 0.74f, 0.04f } - }; - - if (i > 0) - glfwWindowHint(GLFW_FOCUS_ON_SHOW, GLFW_FALSE); - - windows[i] = glfwCreateWindow(size, size, "Multi-Window Example", NULL, NULL); - if (!windows[i]) - { - glfwGetError(&description); - printf("Error: %s\n", description); - glfwTerminate(); - exit(EXIT_FAILURE); - } - - glfwSetWindowPos(windows[i], - xpos + size * (1 + (i & 1)), - ypos + size * (1 + (i >> 1))); - glfwSetInputMode(windows[i], GLFW_STICKY_KEYS, GLFW_TRUE); - - glfwMakeContextCurrent(windows[i]); - gladLoadGL(glfwGetProcAddress); - glClearColor(colors[i].r, colors[i].g, colors[i].b, 1.f); - } - - for (int i = 0; i < 4; i++) - glfwShowWindow(windows[i]); - - for (;;) - { - for (int i = 0; i < 4; i++) - { - glfwMakeContextCurrent(windows[i]); - glClear(GL_COLOR_BUFFER_BIT); - glfwSwapBuffers(windows[i]); - - if (glfwWindowShouldClose(windows[i]) || - glfwGetKey(windows[i], GLFW_KEY_ESCAPE)) - { - glfwTerminate(); - exit(EXIT_SUCCESS); - } - } - - glfwWaitEvents(); - } -} - |