rt300@0: /*
rt300@0:  *  spring.h
rt300@0:  *  simplespring
rt300@0:  *
rt300@0:  *  Created by Robert Tubb on 02/06/2011.
rt300@0:  *  Copyright 2011 __MyCompanyName__. All rights reserved.
rt300@0:  *
rt300@0:  */
rt300@0: 
rt300@0: 
rt300@0: 
rt300@0: #ifndef _SPRINGH
rt300@0: #define _SPRINGH
rt300@0: #include "2dvector.h"
rt300@0: #include "ofMain.h"
rt300@0: 
rt300@0: class Lump;
rt300@0: 
rt300@0: class Spring{
rt300@0: protected:
rt300@0: 	double restLength;
rt300@0: 	double springConst;
rt300@0: 	
rt300@0: 	static double maxForce;
rt300@0: 	static double minForce;
rt300@0: 	
rt300@0: 	static int numSprings;
rt300@0: 
rt300@0: 	int myIndex;
rt300@0:     
rt300@0:     double csquared;
rt300@0: 	
rt300@0: 	TwoVector startPoint;
rt300@0: 	TwoVector endPoint;
rt300@0: 	
rt300@0: 	TwoVector force;
rt300@0: 	Lump * startLumpPtr;
rt300@0: 	Lump * endLumpPtr;
rt300@0: 	
rt300@3: 	
rt300@0: 
rt300@0: 	
rt300@0: public:
rt300@3:     bool isInScanPath;
rt300@0: 	static bool forcesOn;
rt300@9: 	int myIndexInMesh;
rt300@0: 	Spring();
rt300@0: 	Spring(double aStartx, double aStarty, double aEndx, double aEndy, double aK);
rt300@0: 	void updateEndPoints();
rt300@0: 	void attachLump(Lump * aLump);
rt300@0:     
rt300@0:     void calculateForce();
rt300@0:     virtual TwoVector getForce(Lump * aLump);
rt300@0: 
rt300@0: 	void draw();
rt300@0: 	void setRestLength();
rt300@0: 	void setRestLength(double aLength);
rt300@0:     void setSpringConstant(double aK);
rt300@0:     double getLength();
rt300@0: 
rt300@0: 	void addToScanPath();
rt300@0:     void removeFromScanPath();
rt300@0:     Lump * getLumpOnOtherEnd(Lump * alump);
rt300@9:     Lump * getStartLump();
rt300@9:     Lump * getEndLump();
rt300@9:     int getStartLumpIndex();
rt300@9:     int getEndLumpIndex();
rt300@0: 	//void checkStuff();
rt300@0:     
rt300@0:     // interface for scanner
rt300@0: 	double getForceMag();
rt300@0: };
rt300@0: 
rt300@0: class PressureSpring : public Spring{
rt300@0: public:
rt300@0:     PressureSpring();
rt300@0:     TwoVector getForce(Lump * aLump);
rt300@0: 
rt300@0: };
rt300@0: 
rt300@0: #endif
rt300@0: 
rt300@0: