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added a desaturation method based on Luminance, and relative functions.

This commit is contained in:
Paolo Cignoni 2008-07-17 20:11:13 +00:00
parent e19635f285
commit f5afb40d66
1 changed files with 10 additions and 1 deletions
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11
vcg/complex/trimesh/update/color.h
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@ -601,7 +601,7 @@ static int Desaturation(UpdateMeshType &m, int method, const bool ProcessSelecte
return counter;
}
enum DesaturationMethods {M_LIGHTNESS = 0, M_MEAN = 1};
enum DesaturationMethods {M_LIGHTNESS = 0, M_LUMINANCE = 1, M_MEAN = 2};
static Color4b ColorDesaturate(Color4b c, int method)
{
@ -614,6 +614,10 @@ static Color4b ColorDesaturate(Color4b c, int method)
int val = (int)ComputeMeanLightness(c);
return Color4b( val, val, val, 255);
}
case M_LUMINANCE:{
int val = (int)ComputeLuminance(c);
return Color4b( val, val, val, 255);
}
default: assert(0);
}
}
@ -621,6 +625,11 @@ static Color4b ColorDesaturate(Color4b c, int method)
static float ComputeMeanLightness(Color4b c)
{
return float(c[0]+c[1]+c[2])/3.0f;
}
static float ComputeLuminance(Color4b c)
{
return float(0.2126f*c[0]+0.7152f*c[1]+0.0722f*c[2]);
}
static int Equalize(UpdateMeshType &m, unsigned int rgbMask, const bool ProcessSelected=false)