//*******************************************************************
template <class T>
void computeRGB(float *rgb, const T &index, const T &minIndex, const T &maxIndex)
{
   computeRGB(rgb[0],rgb[1],rgb[2],index,minIndex,maxIndex);
}   

//*******************************************************************

template <class T>
void computeRGB(float &red, float &green, float &blue, const T &index, const T &minIndex, const T &maxIndex)
{
   float diff = float(maxIndex - minIndex); 
   //the hue should range from 0 to 300 to get colors from red to purple.  The hue goes from 0 (red) to 360 (red) so we don't want it to wrap around.
   float hue = float(index - minIndex)/diff*240.0;
   transformHSVtoRGB(red,green,blue,hue);
}

//*******************************************************************