#include "Camera.hpp"

#include "AppConfig.hpp"

#include <glm/gtc/matrix_transform.hpp>

void Camera::Move(glm::vec3 pos) {
	this->pos = pos;
}

void Camera::LookAt(glm::vec3 pos) {
	this->lookAt = pos;
}

void Camera::SetHasPerspective(bool perspective) {
	this->perspective = perspective;
}

glm::mat4 Camera::CalcViewMatrix() const {
	return glm::lookAt(pos, lookAt, glm::vec3(0, 1, 0));
}

glm::mat4 Camera::CalcProjectionMatrix() const {
	if (perspective) {
		return glm::perspective(90.0f, AppConfig::mainWindowAspectRatio, 0.1f, 1000.0f);
	} else {
		return glm::ortho(
			pos.x - AppConfig::mainWidnowWidth / 2,
			pos.x + AppConfig::mainWidnowWidth / 2,
			pos.y - AppConfig::mainWindowHeight / 2,
			pos.y + AppConfig::mainWindowHeight / 2);
	}
}