nuclear@1: #ifndef CAMERA_H_
nuclear@1: #define CAMERA_H_
nuclear@1: 
nuclear@1: #include "vmath/vmath.h"
nuclear@1: 
nuclear@1: class Camera {
nuclear@1: protected:
nuclear@1: 	mutable struct {
nuclear@1: 		bool valid;
nuclear@1: 		Matrix4x4 mat;
nuclear@1: 	} mcache, mcache_inv;
nuclear@1: 
nuclear@1: 	virtual void calc_matrix(Matrix4x4 *mat) const = 0;
nuclear@1: 	virtual void calc_inv_matrix(Matrix4x4 *mat) const;
nuclear@1: 
nuclear@1: 	void inval_cache() { mcache.valid = mcache_inv.valid = false; }
nuclear@1: 	void set_glmat(const Matrix4x4 &m) const;
nuclear@1: 
nuclear@1: public:
nuclear@1: 	Camera();
nuclear@1: 	virtual ~Camera();
nuclear@1: 
nuclear@1: 	const Matrix4x4 &matrix() const;
nuclear@1: 	const Matrix4x4 &inv_matrix() const;
nuclear@1: 
nuclear@1: 	void use() const;
nuclear@1: 	void use_inverse() const;
nuclear@1: 
nuclear@1: 	// these do nothing, override to provide input handling
nuclear@1: 	virtual void input_move(float x, float y, float z);
nuclear@1: 	virtual void input_rotate(float x, float y, float z);
nuclear@1: 	virtual void input_zoom(float factor);
nuclear@1: };
nuclear@1: 
nuclear@1: class OrbitCamera : public Camera {
nuclear@1: private:
nuclear@1: 	float theta, phi, rad;
nuclear@1: 
nuclear@1: 	void calc_matrix(Matrix4x4 *mat) const;
nuclear@1: 	void calc_inv_matrix(Matrix4x4 *mat) const;
nuclear@1: 
nuclear@1: public:
nuclear@1: 	OrbitCamera();
nuclear@1: 	virtual ~OrbitCamera();
nuclear@1: 
nuclear@1: 	void input_rotate(float x, float y, float z);
nuclear@1: 	void input_zoom(float factor);
nuclear@1: };
nuclear@1: 
nuclear@1: class FlyCamera : public Camera {
nuclear@1: private:
nuclear@1: 	Vector3 pos;
nuclear@1: 	Quaternion rot;
nuclear@1: 
nuclear@1: 	void calc_matrix(Matrix4x4 *mat) const;
nuclear@1: 	//void calc_inv_matrix(Matrix4x4 *mat) const;
nuclear@1: 
nuclear@1: public:
nuclear@1: 	FlyCamera();
nuclear@1: 
nuclear@1: 	const Vector3 &get_position() const;
nuclear@1: 	const Quaternion &get_rotation() const;
nuclear@1: 
nuclear@1: 	void input_move(float x, float y, float z);
nuclear@1: 	void input_rotate(float x, float y, float z);
nuclear@1: };
nuclear@1: 
nuclear@1: 
nuclear@1: #endif	// CAMERA_H_