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transfunc.cpp

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#include "stdafx.h"
#include "transfunc.h"

Transfunc::Transfunc()
{
        opacitymap = new float[4096];
        colormap = new rgb[4096];
        for(int i = 0; i < 4096; i++) 
        {
                opacitymap[i] = 0.0;
                colormap[i].r = 0;
                colormap[i].g = 0;
                colormap[i].b = 0;
        }
}


Transfunc::Transfunc(const Transfunc &trans) {
        if (!colormap)
                colormap = new rgb[4096];
        if (!opacitymap)
                opacitymap = new float[4096];


        for (int i = 0; i < 4096; i++) {
                colormap[i] = trans.colormap[i];
                opacitymap[i] = trans.opacitymap[i];
        }
}


Transfunc::~Transfunc()
{
        if(colormap != NULL) {
                delete[] colormap;
                colormap = NULL;
        }
        if(opacitymap != NULL) {
                delete[] opacitymap;
                opacitymap = NULL;
        }
}
                
rgb
Transfunc::GetDensityColor(int dens)
{
        if (dens > 4095)
                dens = 4095;

        return colormap[dens];
}

bool
Transfunc::SetDensityColor(int dens, rgb col)
{
        colormap[dens].r = col.r;
        colormap[dens].g = col.g;
        colormap[dens].b = col.b;
        return true;
}

float
Transfunc::GetOpacity(int dens)
{
        if (dens > 4095)
                dens = 4095;

        if (dens < 0)
                dens = 0;

        return opacitymap[dens];
}

bool
Transfunc::SetOpacity(int dens, float opac)
{
        opacitymap[dens] = opac;
        return true;
}

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