nuclear@0: #ifndef CAMERA_H_
nuclear@0: #define CAMERA_H_
nuclear@0: 
nuclear@0: #include "vmath/vmath.h"
nuclear@0: 
nuclear@0: class Camera {
nuclear@0: protected:
nuclear@0: 	Vector3 pos;
nuclear@0: 	float vfov;	// vertical field of view in radians
nuclear@0: 
nuclear@0: 	mutable Matrix4x4 cached_matrix;
nuclear@0: 	mutable bool cached_matrix_valid;
nuclear@0: 
nuclear@0: 	mutable Vector3 *rdir_cache;
nuclear@0: 	mutable int rdir_cache_width, rdir_cache_height;
nuclear@0: 
nuclear@0: 	virtual void calc_matrix(Matrix4x4 *mat) const = 0;
nuclear@0: 
nuclear@0: 	Vector2 calc_sample_pos(int x, int y, int xsz, int ysz, int sample) const;
nuclear@0: 
nuclear@0: public:
nuclear@0: 	Camera();
nuclear@0: 	Camera(const Vector3 &pos);
nuclear@0: 	virtual ~Camera();
nuclear@0: 
nuclear@0: 	virtual void set_fov(float vfov);
nuclear@0: 	virtual float get_fov() const;
nuclear@0: 
nuclear@0: 	virtual void set_position(const Vector3 &pos);
nuclear@0: 	virtual const Vector3 &get_position() const;
nuclear@0: 	virtual const Matrix4x4 &get_matrix() const;
nuclear@0: 
nuclear@0: 	virtual Ray get_primary_ray(int x, int y, int xsz, int ysz, int sample = 0) const;
nuclear@0: };
nuclear@0: 
nuclear@0: class TargetCamera : public Camera {
nuclear@0: protected:
nuclear@0: 	Vector3 target;
nuclear@0: 
nuclear@0: 	void calc_matrix(Matrix4x4 *mat) const;
nuclear@0: 
nuclear@0: public:
nuclear@0: 	TargetCamera();
nuclear@0: 	TargetCamera(const Vector3 &pos, const Vector3 &targ);
nuclear@0: 
nuclear@0: 	virtual void set_target(const Vector3 &targ);
nuclear@0: 	virtual const Vector3 &get_target() const;
nuclear@0: };
nuclear@0: 
nuclear@0: class FlyCamera : public Camera {
nuclear@0: protected:
nuclear@0: 	Quaternion rot;
nuclear@0: 
nuclear@0: 	void calc_matrix(Matrix4x4 *mat) const;
nuclear@0: 
nuclear@0: public:
nuclear@0: 	void input_move(float x, float y, float z);
nuclear@0: 	void input_rotate(float x, float y, float z);
nuclear@0: };
nuclear@0: 
nuclear@0: #endif	// CAMERA_H_