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Color mode (HSB) support

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francisli
2005-03-24 22:52:08 +00:00
parent 4ba086898e
commit c615c745e7
1 changed files with 41 additions and 0 deletions
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41
core/processing/core/PCanvas.java
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@@ -678,6 +678,47 @@ public class PCanvas extends Canvas {
value3 = value3 * 255 / colorMaxZ;
} else {
//// convert from HSB to RGB
int y = (value2 << PMIDlet.FP_PRECISION) / colorMaxY;
int z = (value3 << PMIDlet.FP_PRECISION) / colorMaxZ;
int h = value1 * 6 / colorMaxX % 6;
int f = (value1 << PMIDlet.FP_PRECISION) * 6 / colorMaxX - (h << PMIDlet.FP_PRECISION);
int p = midlet.mul(z, PMIDlet.ONE - y);
int q = midlet.mul(z, PMIDlet.ONE - midlet.mul(y, f));
int t = midlet.mul(z, PMIDlet.ONE - midlet.mul(y, PMIDlet.ONE - f));
switch (h) {
case 0:
value1 = (z * 255) >> PMIDlet.FP_PRECISION;
value2 = (t * 255) >> PMIDlet.FP_PRECISION;
value3 = (p * 255) >> PMIDlet.FP_PRECISION;
break;
case 1:
value1 = (q * 255) >> PMIDlet.FP_PRECISION;
value2 = (z * 255) >> PMIDlet.FP_PRECISION;
value3 = (p * 255) >> PMIDlet.FP_PRECISION;
break;
case 2:
value1 = (p * 255) >> PMIDlet.FP_PRECISION;
value2 = (z * 255) >> PMIDlet.FP_PRECISION;
value3 = (t * 255) >> PMIDlet.FP_PRECISION;
break;
case 3:
value1 = (p * 255) >> PMIDlet.FP_PRECISION;
value2 = (q * 255) >> PMIDlet.FP_PRECISION;
value3 = (z * 255) >> PMIDlet.FP_PRECISION;
break;
case 4:
value1 = (t * 255) >> PMIDlet.FP_PRECISION;
value2 = (p * 255) >> PMIDlet.FP_PRECISION;
value3 = (z * 255) >> PMIDlet.FP_PRECISION;
break;
case 5:
value1 = (z * 255) >> PMIDlet.FP_PRECISION;
value2 = (p * 255) >> PMIDlet.FP_PRECISION;
value3 = (q * 255) >> PMIDlet.FP_PRECISION;
break;
}
}
}
if (alpha != 255) {