TxFunction.h

#ifndef _TX_FUNCTION_
#define _TX_FUNCTION_

#include <vector>
#include <algorithm>

#include "LifeVariables.h"
#include "TxPoint.h"

using namespace std;

class TxFunction {
    private:
        
        vector<TxPoint> controlPoints;

        //TxPoint *controlPoint;

        
    public:
        
        TxFunction(float x1, float y1, float x2, float y2);

        ~TxFunction() {
            this->controlPoints.clear();
        };


        void addControlPoint(GLfloat x, GLfloat y, 
                             GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);


        void removeControlPoint(TxPoint *p);


        void moveControlPoint(TxPoint *point, GLfloat x, GLfloat y);
        

        TxPoint* hitTxPoint(GLfloat x, GLfloat y);

        TxPoint* getLastTxPoint();

        TxPoint* getFirstTxPoint();

        void render();


        TxPoint* getNearestNeighbour(unsigned short density) ;


        void getLinearInterpolatedColor(unsigned short density, 
                                        float &red, float &green, float &blue, float &alpha);



        void getLinearInterpolatedVoxelColor(float density,
                                             float &red, float &green, float &blue);

        void getLevoyVoxelColor(float density,
                                float &red, float &green, float &blue, float gradient);


        
        void getSolidVoxelColor(float denisty,
                                                  float &red, float &green, float &blue);
};

#endif

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