Initial commit of existing code.

* All renderdoc code up to this point was written by me, history is available by request

renderdoc/maths/camera.cpp

@@ -0,0 +1,76 @@
+/******************************************************************************
+ * The MIT License (MIT)
+ * 
+ * Copyright (c) 2014 Crytek
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ ******************************************************************************/
+
+
+#include <string.h>
+#include <math.h>
+
+#include "camera.h"
+#include "matrix.h"
+
+void Camera::Arcball(float dist, Vec3f rot)
+{
+	pos = Vec3f(0.0f, 0.0f, dist);
+
+	order = ORDER_ROT_TRANS;
+
+	angles.x = rot.x;
+	angles.y = rot.y;
+}
+
+void Camera::fpsLook(Vec3f p, Vec3f rot)
+{
+	pos = -p;
+	
+	angles.x = -rot.x;
+	angles.y = -rot.y;
+
+	order = ORDER_TRANS_ROT;
+}
+
+const Matrix4f Camera::GetMatrix()
+{
+	Matrix4f p = Matrix4f::Translation(pos);
+	Matrix4f r = Matrix4f::RotationXYZ(angles);
+
+	if(order == ORDER_TRANS_ROT)
+		return r.Mul(p);
+
+	return p.Mul(r);
+}
+
+const Vec3f Camera::GetPosition()
+{
+	return GetMatrix().GetPosition();
+}
+
+const Vec3f Camera::GetForward()
+{
+	return Matrix4f::RotationZYX(-angles).GetForward();
+}
+
+const Vec3f Camera::GetRight()
+{
+	return Matrix4f::RotationZYX(-angles).GetRight();
+}