GradientDiameterGen.h

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#pragma once
#include "DiameterGen.h"

class GradientDiameterGen : public DiameterGen
{
public:
    GradientDiameterGen() : _diameterStart(1.0), _diameterEnd(1.0) {};
    GradientDiameterGen(double diameterStart, double diameterEnd) 
        : _diameterStart(diameterStart), _diameterEnd(diameterEnd) {};

    META_DAObject(GradientDiameterGen, "Gradient Diameter")

    
    virtual DoubleArrayPtr getDiameters( unsigned int arraySize ) 
    {
        _dirty = false;

        DoubleArrayPtr result = new osg::DoubleArray;    
        result->reserve(arraySize);
        double diameterStep = (_diameterEnd - _diameterStart) / arraySize;

        for (unsigned int i = 0; i < arraySize; i++)
            result->push_back(_diameterStart + diameterStep * i);

        return result;
    }

    inline double getDiameterEnd() const { return _diameterEnd; }
    inline void setDiameterEnd(double val) { _dirty = true; _diameterEnd = val; }
    
    inline double getDiameterStart() const { return _diameterStart; }
    inline void setDiameterStart(double val) { _dirty = true; _diameterStart = val; }

protected:
    double _diameterStart; 
    double _diameterEnd; 

};