aboutsummaryrefslogtreecommitdiff
path: root/3rdparty/glm/source/glm/ext/quaternion_trigonometric.inl
diff options
context:
space:
mode:
authorrtk0c <[email protected]>2022-05-22 01:08:24 -0700
committerrtk0c <[email protected]>2022-05-22 01:08:24 -0700
commitc568f0a8c9f0aef00c770b494ee1ff3a89ab48de (patch)
tree1dc1e69d796e635cdac6a4ef7e6d3a90ab1423c2 /3rdparty/glm/source/glm/ext/quaternion_trigonometric.inl
parenta5db6bd3cc4af5233010ff44d0572ddf98b43c9d (diff)
Changeset: 35 Fix missing sources in git submodules after migration to PlasticSCM
Diffstat (limited to '3rdparty/glm/source/glm/ext/quaternion_trigonometric.inl')
-rw-r--r--3rdparty/glm/source/glm/ext/quaternion_trigonometric.inl37
1 files changed, 37 insertions, 0 deletions
diff --git a/3rdparty/glm/source/glm/ext/quaternion_trigonometric.inl b/3rdparty/glm/source/glm/ext/quaternion_trigonometric.inl
new file mode 100644
index 0000000..896449a
--- /dev/null
+++ b/3rdparty/glm/source/glm/ext/quaternion_trigonometric.inl
@@ -0,0 +1,37 @@
+#include "scalar_constants.hpp"
+
+namespace glm
+{
+ template<typename T, qualifier Q>
+ GLM_FUNC_QUALIFIER T angle(qua<T, Q> const& x)
+ {
+ if (abs(x.w) > cos_one_over_two<T>())
+ {
+ T const a = asin(sqrt(x.x * x.x + x.y * x.y + x.z * x.z)) * static_cast<T>(2);
+ if(x.w < static_cast<T>(0))
+ return pi<T>() * static_cast<T>(2) - a;
+ return a;
+ }
+
+ return acos(x.w) * static_cast<T>(2);
+ }
+
+ template<typename T, qualifier Q>
+ GLM_FUNC_QUALIFIER vec<3, T, Q> axis(qua<T, Q> const& x)
+ {
+ T const tmp1 = static_cast<T>(1) - x.w * x.w;
+ if(tmp1 <= static_cast<T>(0))
+ return vec<3, T, Q>(0, 0, 1);
+ T const tmp2 = static_cast<T>(1) / sqrt(tmp1);
+ return vec<3, T, Q>(x.x * tmp2, x.y * tmp2, x.z * tmp2);
+ }
+
+ template<typename T, qualifier Q>
+ GLM_FUNC_QUALIFIER qua<T, Q> angleAxis(T const& angle, vec<3, T, Q> const& v)
+ {
+ T const a(angle);
+ T const s = glm::sin(a * static_cast<T>(0.5));
+
+ return qua<T, Q>(glm::cos(a * static_cast<T>(0.5)), v * s);
+ }
+}//namespace glm