nuclear@6: #ifndef XFERMAP_H_
nuclear@6: #define XFERMAP_H_
nuclear@6: 
nuclear@6: class TransferFunc {
nuclear@6: public:
nuclear@6: 	virtual ~TransferFunc();
nuclear@6: 
nuclear@6: 	virtual float map(float x) const = 0;
nuclear@6: 	virtual void map(float x, float *rgba_value) const = 0;
nuclear@6: };
nuclear@6: 
nuclear@6: class TransferWindow : public TransferFunc {
nuclear@6: private:
nuclear@6: 	float soft_rad;
nuclear@7: 	float low[3], high[3];	// rgb
nuclear@6: 
nuclear@6: public:
nuclear@7: 	enum { HANDLE_LOW = 0, HANDLE_HIGH = 1};
nuclear@7: 
nuclear@6: 	TransferWindow();
nuclear@6: 
nuclear@7: 	// handle: 0 or HANDLE_LOW is low, 1 or HANDLE_HIGH is high
nuclear@7: 	// if channel == -1, change all channels simultaneously
nuclear@7: 	void set_handle(int channel, int handle, float val);
nuclear@7: 	float get_handle(int channel, int handle) const;
nuclear@7: 
nuclear@7: 	int nearest_handle(int channel, float pos) const;
nuclear@7: 
nuclear@6: 	void set_interval(float a, float b);
nuclear@6: 	void set_interval(float *rgba_low, float *rgba_high);
nuclear@6: 	void set_interval_rgba(int channel, float a, float b);
nuclear@6: 
nuclear@6: 	void get_interval(float *aptr, float *bptr) const;
nuclear@6: 	void get_interval_rgba(float *rgba_low, float *rgba_high) const;
nuclear@6: 	void get_interval_rgba(int channel, float *aptr, float *bptr) const;
nuclear@6: 
nuclear@6: 	void set_soft_radius(float s);
nuclear@6: 	float get_soft_radius() const;
nuclear@6: 
nuclear@6: 	float map(float x) const;
nuclear@6: 	void map(float x, float *rgba_value) const;
nuclear@6: };
nuclear@6: 
nuclear@6: #endif	// XFERMAP_H_