nuclear@0: #ifndef _CURVES_H_
nuclear@0: #define _CURVES_H_
nuclear@0: 
nuclear@0: #include <string>
nuclear@0: #include "n3dmath.h"
nuclear@0: #include "linkedlist.h"
nuclear@0: 
nuclear@0: class Curve {
nuclear@0: protected:
nuclear@0: 	LinkedList<Vector3> ControlPoints;
nuclear@0: 	Vector2 *Samples;	// used for parametrizing by arc length
nuclear@0: 	int SampleCount;
nuclear@0: 	bool ArcParametrize;
nuclear@0: 
nuclear@0: 	Curve *ease_curve;	// ease in/out curve (1D, x&z discarded)
nuclear@0: 	int ease_sample_count, ease_step;
nuclear@0: 	
nuclear@0: 	void SampleArcLengths();
nuclear@0: 	float Parametrize(float t);
nuclear@0: 	float Ease(float t);
nuclear@0: 
nuclear@0: public:
nuclear@0: 	std::string name;
nuclear@0: 
nuclear@0: 	Curve();
nuclear@0: 	~Curve();
nuclear@0: 	virtual void AddControlPoint(const Vector3 &cp);
nuclear@0: 
nuclear@0: 	virtual int GetSegmentCount() const = 0;
nuclear@0: 	virtual void SetArcParametrization(bool state);
nuclear@0: 	virtual void SetEaseCurve(Curve *curve);
nuclear@0: 	virtual void SetEaseSampleCount(int count);
nuclear@0: 
nuclear@0: 	virtual Vector3 Interpolate(float t) = 0;
nuclear@0: };
nuclear@0: 
nuclear@0: class BSpline : public Curve {
nuclear@0: public:
nuclear@0: 	virtual int GetSegmentCount() const;
nuclear@0: 	virtual Vector3 Interpolate(float t);	
nuclear@0: };
nuclear@0: 
nuclear@0: class CatmullRomSpline : public Curve {
nuclear@0: public:
nuclear@0: 	virtual int GetSegmentCount() const;
nuclear@0: 	virtual Vector3 Interpolate(float t);
nuclear@0: };
nuclear@0: 
nuclear@0: 
nuclear@0: #endif	// _CURVES_H_