Separated OpenGL specific code into its own "compilation unit"

src/game/Rendering/Camera.cpp

@@ -0,0 +1,124 @@
+/*
+	This file is part of Daydream Engine.
+	Copyright 2014 Adam Byléhn, Tobias Dahl, Simon Holmberg, Viktor Ljung
+	
+	Daydream Engine is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+	
+	Daydream Engine is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Lesser General Public License for more details.
+	
+	You should have received a copy of the GNU Lesser General Public License
+	along with Daydream Engine.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "PrecompiledHeader.h"
+#include "Rendering/Camera.h"
+
+dd::Camera::Camera(float aspectRatio, float yFOV, float nearClip, float farClip)
+{
+	m_AspectRatio = aspectRatio;
+	m_FOV = yFOV;
+	m_NearClip = nearClip;
+	m_FarClip = farClip;
+
+	m_Position = glm::vec3(0.0);
+
+	UpdateProjectionMatrix();
+	UpdateViewMatrix();
+}
+
+glm::vec3 dd::Camera::Forward()
+{
+	return m_Orientation * glm::vec3(0, 0, -1);
+}
+//
+//glm::vec3 Camera::Right()
+//{
+//	return glm::rotate(glm::vec3(1.f, 0.f, 0.f), -m_Yaw, glm::vec3(0.f, 1.f, 0.f));
+//}
+
+//glm::mat4 Camera::Orientation()
+//{
+//	glm::mat4 orientation(1.f);
+//	orientation = glm::rotate(orientation, m_Pitch, glm::vec3(1.f, 0.f, 0.f));
+//	orientation = glm::rotate(orientation, m_Yaw, glm::vec3(0.f, 1.f, 0.f));
+//	return orientation;
+//}
+
+void dd::Camera::SetPosition(glm::vec3 val)
+{
+	m_Position = val;
+	UpdateViewMatrix();
+}
+
+
+void dd::Camera::SetOrientation(glm::quat val)
+{
+	m_Orientation = val;
+	UpdateViewMatrix();
+}
+
+//void Camera::Pitch(float val)
+//{
+//	m_Pitch = val;
+//	UpdateViewMatrix();
+//}
+//
+//void Camera::Yaw(float val)
+//{
+//	m_Yaw = val;
+//	UpdateViewMatrix();
+//}
+
+void dd::Camera::UpdateProjectionMatrix()
+{
+//	m_ProjectionMatrix = glm::ortho(
+//		-16.f,
+//		16.f,
+//		-9.f,
+//		9.f,
+//		m_NearClip,
+//		m_FarClip
+//		);
+	m_ProjectionMatrix = glm::perspective(
+		m_FOV,
+		m_AspectRatio,
+		m_NearClip,
+		m_FarClip
+		);
+}
+
+void dd::Camera::UpdateViewMatrix()
+{
+	m_ViewMatrix = glm::toMat4(glm::inverse(m_Orientation))
+		* glm::translate(-m_Position);
+}
+
+void dd::Camera::SetAspectRatio(float val)
+{
+	m_AspectRatio = val;
+	UpdateProjectionMatrix();
+}
+
+void dd::Camera::SetFOV(float val)
+{
+	m_FOV = val;
+	UpdateProjectionMatrix();
+}
+
+void dd::Camera::SetNearClip(float val)
+{
+	m_NearClip = val;
+	UpdateProjectionMatrix();
+}
+
+void dd::Camera::SetFarClip(float val)
+{
+	m_FarClip = val;
+	UpdateProjectionMatrix();
+}