Revision 8798 org.gvsig.raster/branches/org.gvsig.raster.2.4/org.gvsig.raster/org.gvsig.raster.lib/org.gvsig.raster.lib.legend/org.gvsig.raster.lib.legend.impl/src/main/java/org/gvsig/raster/lib/legend/impl/DefaultColorManager.java
| DefaultColorManager.java | ||
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| 443 | 443 |
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public double[] RGBtoCMYK(int red, int green, int blue, double kScale) {
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| 445 | 445 |
double[] cmyk = new double[4]; |
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double c = 1D - (red / 255D);
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double m = 1D - (green / 255D);
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double y = 1D - (blue / 255D);
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cmyk[3] = 1D; |
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double r = red / 255D;
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double g = green / 255D;
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double b = blue / 255D;
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cmyk[3] = 1D - Math.max(r, Math.max(g, b));
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| 450 | 450 |
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if(c < cmyk[3]) |
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cmyk[3] = c; |
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if(m < cmyk[3]) |
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cmyk[3] = m; |
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if(y < cmyk[3]) |
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cmyk[3] = y; |
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cmyk[3] *= kScale; |
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if(cmyk[3] < 1.0) {
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cmyk[0] = ((double)(c - cmyk[3]) / (double)(1D - cmyk[3])); |
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cmyk[1] = ((double)(m - cmyk[3]) / (double)(1D - cmyk[3])); |
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cmyk[2] = ((double)(y - cmyk[3]) / (double)(1D - cmyk[3])); |
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cmyk[0] = 0; |
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cmyk[1] = 0; |
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cmyk[2] = 0; |
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if(cmyk[3]!=1){
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cmyk[0] = ((double) (1 - r - cmyk[3]) / (double) (1D - cmyk[3])) * kScale; |
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cmyk[1] = ((double) (1 - g - cmyk[3]) / (double) (1D - cmyk[3])) * kScale; |
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cmyk[2] = ((double) (1 - b - cmyk[3]) / (double) (1D - cmyk[3])) * kScale; |
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| 464 | 458 |
} |
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cmyk[3] *= kScale; |
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| 465 | 460 |
return cmyk; |
| 466 | 461 |
} |
| 467 | 462 |
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| 468 | 463 |
public double[] CMYKtoRGB(double cyan, double magenta, double yellow, double key) {
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| 469 | 464 |
double[] rgb = new double[3]; |
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double c = 1, m = 1, y = 1; |
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| 471 | 465 |
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if (key < 1D) {
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c = cyan * (1D - key) + key; |
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m = magenta * (1D - key) + key; |
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y = yellow * (1D - key) + key; |
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} |
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rgb[0] = (1D - cyan)*(1-key); |
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rgb[1] = (1D - magenta)*(1-key); |
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rgb[2] = (1D - yellow)*(1-key); |
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| 477 | 469 |
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rgb[0] = 1D - c; |
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rgb[1] = 1D - m; |
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rgb[2] = 1D - y; |
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| 481 | 470 |
return rgb; |
| 482 | 471 |
} |
| 483 | 472 |
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