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Bugfixes for tone curve and exposure.

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This commit is contained in:
Emil Martinec
2010-11-13 23:15:20 -06:00
parent 4221d8f16d
commit c4ae6c30ba
3 changed files with 14 additions and 52 deletions
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10
rtengine/curves.h
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@@ -103,13 +103,13 @@ class CurveFactory {
else
return y*clower2(x/m, slope*m/y, 2.0-sr);
} else {
double m = a>1 ? b+0.25*(1-b)/a : b+(1-b)/4;
double y = a>1 ? 0.25 : 0.25*a;
double slope = a/(1-b);
double m = a*D>1 ? b/a+(0.25+0.75*(1-1/D))/slope : b+(1-b)/4;
double y = a*D>1 ? 0.25 : (m-b/a)*slope;
if (x<=m)
return b==0 ? x*a : clower (x/m, slope*m/y, sr) * y;
else if (a>1)
return y+(1.0-y)*cupper2((x-m)/(1-m), slope*(1-m)/(1.0-y), hr);
return b==0 ? x*slope : clower (x/m, slope*m/y, sr) * y;
else if (a*D>1)
return y+(1.0-y)*cupper2((x-m)/(D-m), slope*(D-m)/(1.0-y), hr);
else
return y+(x-m)*slope;
}