void CalculateNextPixel()
{
ColormapValue value = CalculateColormapValue();
pixelBuffer[calculatorProgress.progress] = value.ToRGB();
calculatorProgress.NextPixel();
progress = (float)calculatorProgress.progress / (float)totalPixels;
}
ColormapValue CalculateColormapValue()
{
Vector3 sourceRGB = ColormapUtils.ColorToVector(calculatorProgress.color);
byte mainPaletteIndex = GetClosestPaletteIndex();
if (palette[mainPaletteIndex].Equals(calculatorProgress.color))
{
return(new ColormapValue
{
paletteIndex1 = mainPaletteIndex,
paletteIndex2 = mainPaletteIndex,
blend = 0
});
}
Vector3 mainRGB = paletteRGBCoordinates[mainPaletteIndex];
float closestDistance = float.MaxValue;
int closestIndex = -1;
float closestSegmentLength = float.MaxValue;
float blend = 0;
for (int i = 0; i < numColors; ++i)
{
if (usedColors[i] && i != mainPaletteIndex)
{
Vector3 paletteRGB = paletteRGBCoordinates[i];
Vector3 projected = ColormapUtils.ProjectPointOnLine(mainRGB, paletteRGB, sourceRGB);
if (ColormapUtils.PointIsInsideSegment(mainRGB, paletteRGB, projected))
{
float distance = Vector3.Distance(sourceRGB, projected);
float segmentLength = Vector3.Distance(mainRGB, paletteRGB);
if (segmentLength < closestSegmentLength)
{
closestDistance = distance;
closestSegmentLength = segmentLength;
closestIndex = i;
blend = Mathf.Approximately(segmentLength, 0) ? 0 : Vector3.Distance(projected, mainRGB) / segmentLength;
}
else if (Mathf.Approximately(distance, closestDistance))
{
if (distance < closestDistance)
{
closestDistance = distance;
closestSegmentLength = segmentLength;
closestIndex = i;
blend = Mathf.Approximately(segmentLength, 0) ? 0 : Vector3.Distance(projected, mainRGB) / segmentLength;
}
}
}
}
}
if (closestIndex == -1)
{
closestIndex = mainPaletteIndex;
blend = 0;
}
blend = Mathf.Clamp(blend, 0, 0.5f);
ColormapValue value = new ColormapValue
{
paletteIndex1 = mainPaletteIndex,
paletteIndex2 = closestIndex,
blend = blend,
};
/*
* if (calculatorProgress.color.r == calculatorProgress.color.g && calculatorProgress.color.b == calculatorProgress.color.g)
* {
* Debug.Log("color=" + calculatorProgress.color + ", index1=" + value.paletteIndex1 + ", index2=" + value.paletteIndex2 + ", blend=" + value.blend);
* }
*/
return(value);
}