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a question about hsl saturation calculation.

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a question about hsl saturation calculation. chiyu wang 14 Jan 14:18
chiyu wang
2009-01-14 14:18:16 UTC (almost 16 years ago)

a question about hsl saturation calculation.

I tried to go through the source code of hsl saturation calculation.

In the file there is a function :

void gimp_operation_hue_saturation_map (GimpHueSaturationConfig *config, const GimpRGB *color, GimpHueRange range, GimpRGB *result)

it has three step to change saturation. 1.convert RGB into HSL
2. HSL mapping
3. HSL into RGB

My question is how does map_saturation() function work, I tried to look into the code and it turn out too complicated for me to understand. Is there any one can explain it to me. Thank you in advance.

Chiyu Wang