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Solving issue 1427: "HSV equalizer: wrong color lines"

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natureh
2012-06-18 23:36:30 +02:00
parent 5b925e9ac2
commit b5176679b8
3 changed files with 43 additions and 17 deletions
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25
rtengine/improcfun.cc
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@@ -961,6 +961,11 @@ fclose(f);*/
}
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
//
// WARNING: rtengine/color.cc have similar functions. I guess that color.cc was mistakenly committed from the denoise branch
// in changeset #2493dd00b9f3. Code cleanup about those methods will have to be made when the denoise branch will be merged
//
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
void ImProcFunctions::hsv2rgb (float h, float s, float v, float &r, float &g, float &b) {
@@ -987,6 +992,26 @@ fclose(f);*/
b = ((b1)*65535.0);
}
// Function copied for speed concerns
// Not exactly the same as above ; this one return a result in the [0.0 ; 1.0] range
void ImProcFunctions::hsv2rgb01 (float h, float s, float v, float &r, float &g, float &b) {
float h1 = h*6; // sector 0 to 5
int i = int(h1);
float f = h1 - i; // fractional part of h
float p = v * ( 1 - s );
float q = v * ( 1 - s * f );
float t = v * ( 1 - s * ( 1 - f ) );
if (i==1) {r = q; g = v; b = p;}
else if (i==2) {r = p; g = v; b = t;}
else if (i==3) {r = p; g = q; b = v;}
else if (i==4) {r = t; g = p; b = v;}
else if (i==5) {r = v; g = p; b = q;}
else /*(i==0|6)*/ {r = v; g = t; b = p;}
}
void ImProcFunctions::xyz2srgb (float x, float y, float z, float &r, float &g, float &b) {
//Transform to output color. Standard sRGB is D65, but internal representation is D50