restructured some files

tools/gl/camera.h

@@ -0,0 +1,37 @@
+class Camera
+{
+private:
+	Vec3 position;
+	Vec3 target;
+	Vec3 up;
+	Vec3 local_up;
+
+	float fov, aspectRatio;
+	float n, f;
+
+public:
+	Mat4 projMat;
+	Mat4 viewMat;
+
+	void setPosition(Vec3 q);
+	Vec3 getPosition(void);
+	void setTarget(Vec3 q);
+	Vec3 getTarget(void);
+	float getHeading(void);
+
+	void turn(float yaw, float pitch);
+	void orbit(float yaw, float pitch);
+	void dolly(float dist);
+	void zoom(float dist);
+	void pan(float x, float y);
+
+	void setFov(float f);
+	float getFov(void);
+	void setAspectRatio(float r);
+	void setNearFar(float n, float f);
+
+	void look(void);
+	float distanceTo(Vec3 q);
+	float sqDistanceTo(Vec3 q);
+	Camera(void);
+};