Initial Commit

src/engine/camera.cpp

@@ -0,0 +1,92 @@
+#include "camera.h"
+
+Camera::Camera()
+{
+	m_projectionType = PERSPECTIVE;
+	m_position = glm::vec3(0.0f);
+	m_direction = glm::vec3(0.0f, 0.0f, 1.0f);
+	m_front = glm::vec3(0.0f, 0.0f, 0.0f);
+	m_right = glm::vec3(0.0f, 0.0f, 0.0f);
+	m_up = glm::vec3(0.0f, 1.0f, 0.0f);
+	m_fov = 70.0f;
+	m_yaw = 0.0f;
+	m_pitch = 0.0f;
+}
+
+Camera::~Camera()
+{
+}
+
+void Camera::SetYawPitch(float yaw, float pitch)
+{
+	m_yaw = yaw;
+	m_pitch = pitch;
+
+	m_direction.x = cos(glm::radians(yaw)) * cos(glm::radians(pitch));
+	m_direction.y = sin(glm::radians(pitch));
+	m_direction.z = sin(glm::radians(yaw)) * cos(glm::radians(pitch));
+
+	m_front = glm::normalize(m_direction);
+
+	m_right = glm::normalize(glm::cross(m_front, m_up));
+}
+
+glm::quat Camera::GetOrientation()
+{
+	const glm::quat rotQuatY = glm::angleAxis(glm::radians(-GetYaw()), glm::vec3(0, 1, 0));
+	const glm::quat rotQuatX = glm::angleAxis(glm::radians(GetPitch()), GetRight());
+	return rotQuatX * rotQuatY;
+}
+
+glm::mat4 Camera::GetProjectionMatrix(const Viewport& viewport) const
+{
+	glm::mat4 proj = glm::mat4(1.0f);
+	if (m_projectionType == ORTHOGONAL)
+	{
+		proj = glm::ortho(0.0f, (float)viewport.width, 0.0f, (float)viewport.height, 0.1f, 1000.0f);
+	}
+	else // if (m_projectionType == PERSPECTIVE): Control return in all path's
+	{
+		float aspectRatio = (float)viewport.width / (float)viewport.height;
+		proj = glm::perspective(glm::radians(m_fov), aspectRatio, 0.01f, 100.0f);
+	}
+
+	return proj;
+}
+
+glm::mat4 Camera::GetViewMatrix() const
+{
+	glm::mat4 view = glm::mat4(1.0f);
+	view = glm::lookAt(m_position, m_position + m_front, m_up);
+	return view;
+}
+
+glm::mat4 Camera::GetTranslationMatrix() const
+{
+	glm::mat4 t = glm::mat4(1.0f);
+	t = glm::translate(t, m_position);
+	t = glm::rotate(t, m_direction.x, glm::vec3(1.0f, 0.0f, 0.0f));
+	t = glm::rotate(t, m_direction.y, glm::vec3(0.0f, 1.0f, 0.0f));
+	t = glm::rotate(t, m_direction.z, glm::vec3(0.0f, 0.0f, 1.0f));
+	return t;
+}
+
+Frustum& Camera::GetFrustum()
+{
+	return m_frustum;
+}
+
+//////////////////////////////////////////////////////////////////////////
+// Camera Manager
+
+CameraManager g_cameraManager;
+
+void CameraManager::SetActiveCamera(Camera* p_camera)
+{
+	m_activeCamera = p_camera;
+}
+
+Camera* CameraManager::GetActiveCamera() const
+{
+	return m_activeCamera;
+}