68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
//Desc: Contains classes for smooth splines
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//Borrowed from Game Programming Gems4. (Slightly changed to better suit our purposes
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//(and compatability). Any references to external material can be found there
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#ifndef INCLUDED_NUSPLINE
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#define INCLUDED_NUSPLINE
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#define MAX_SPLINE_NODES 40
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#include <stdlib.h>
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#include "Vector3D.h"
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struct SplineData
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{
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CVector3D Position;
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CVector3D Velocity;
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CVector3D Rotation;
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float Distance/*, DistanceOffset*/; //DistanceOffset is to keep track of how far into the spline this node is
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};
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class RNSpline
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{
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public:
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RNSpline() { NodeCount = 0; }
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virtual ~RNSpline() {}
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void AddNode(const CVector3D &pos);
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void BuildSpline();
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CVector3D GetPosition(float time) const;
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CVector3D GetRotation(float time) const;
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const std::vector<SplineData>& GetAllNodes() const { return Node; }
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float MaxDistance;
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int NodeCount;
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protected:
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std::vector<SplineData> Node;
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CVector3D GetStartVelocity(int index);
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CVector3D GetEndVelocity(int index);
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};
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class SNSpline : public RNSpline
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{
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public:
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virtual ~SNSpline() {}
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void BuildSpline(){ RNSpline::BuildSpline(); Smooth(); Smooth(); Smooth(); }
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void Smooth();
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};
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class TNSpline : public SNSpline
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{
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public:
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virtual ~TNSpline() {}
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void AddNode(const CVector3D& pos, const CVector3D& rotation, float timePeriod);
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void PushNode() { Node.push_back( SplineData() ); }
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void InsertNode(const int index, const CVector3D &pos, const CVector3D& rotation, float timePeriod);
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void RemoveNode(const int index);
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void UpdateNodeTime(const int index, float time);
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void UpdateNodePos(const int index, const CVector3D &pos);
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void BuildSpline(){ RNSpline::BuildSpline(); Smooth(); Smooth(); Smooth(); }
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void Smooth(){ for( int x=0; x<3; x++ ) { SNSpline::Smooth(); Constrain(); } }
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void Constrain();
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};
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#endif // INCLUDED_NUSPLINE
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