DrawableSurface *Sprite::getRotatedSurface(int index)
{
RotatedImage::RotationMap::const_iterator it = rotated[index]->rotationMap.find(actColor);
DrawableSurface *ds;
if (it == rotated[index]->rotationMap.end())
{
// compute hue shift
float baseHue, actHue, lum, sat;
float hueShift;
Color(51, 255, 153).getHSV(&baseHue, &sat, &lum);
actColor.getHSV(&actHue, &sat, &lum);
hueShift = actHue - baseHue;
// rotate image
ds = rotated[index]->orig->clone();
ds->shiftHSV(hueShift, 0.0f, 0.0f);
// write back
rotated[index]->rotationMap[actColor] = ds;
}
else
{
ds = it->second;
}
return ds;
}
