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fix for bug #399 committed by dave bollinger, repairs filter(POSTERIZE)

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benfry
2006-12-22 16:20:50 +00:00
parent a8de08a464
commit e88e97512a
2 changed files with 19 additions and 11 deletions
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core/src/processing/core/PImage.java
+7 -11
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@@ -594,18 +594,14 @@ public class PImage implements PConstants, Cloneable {
throw new RuntimeException("Levels must be between 2 and 255 for " +
"filter(POSTERIZE, levels)");
}
// TODO not optimized
int levels256 = 256 / levels;
int levels1 = levels - 1;
for (int i = 0; i < pixels.length; i++) {
int rlevel = ((pixels[i] >> 16) & 0xff) / levels256;
int glevel = ((pixels[i] >> 8) & 0xff) / levels256;
int blevel = (pixels[i] & 0xff) / levels256;
rlevel = (rlevel * 255 / levels1) & 0xff;
glevel = (glevel * 255 / levels1) & 0xff;
blevel = (blevel * 255 / levels1) & 0xff;
int rlevel = (pixels[i] >> 16) & 0xff;
int glevel = (pixels[i] >> 8) & 0xff;
int blevel = pixels[i] & 0xff;
rlevel = (((rlevel * levels) >> 8) * 255) / levels1;
glevel = (((glevel * levels) >> 8) * 255) / levels1;
blevel = (((blevel * levels) >> 8) * 255) / levels1;
pixels[i] = ((0xff000000 & pixels[i]) |
(rlevel << 16) |
(glevel << 8) |
@@ -1073,7 +1069,7 @@ public class PImage implements PConstants, Cloneable {
/**
* Blend a two colors based on a particular mode.
* Blend two colors based on a particular mode.
* <PRE>
* BLEND - linear interpolation of colours: C = A*factor + B
* ADD - additive blending with white clip: C = min(A*factor + B, 255)
core/todo.txt
+12
View File
@@ -10,6 +10,18 @@ X opengl doesn't draw a background for the raw recorder
X change P3D to smooth images nicely (bilinear was disabled)
X ambientLight(r,g,b) was still ambientLight(r,g,r)
X http://dev.processing.org/bugs/show_bug.cgi?id=465
X fix from dave bollinger for the POSTERIZE filter
X http://dev.processing.org/bugs/show_bug.cgi?id=399
_ make sure the docs include "beginShape() cannot be nested"
_ for PShape, need to be able to set the origin (flash people)
_ look into anti-aliasing on osx
_ http://processing.org/discourse/yabb_beta/YaBB.cgi?board=OpenGL;action=display;num=1164236069
_ 1.5.0_07 and 1.4.2_12 contain the -XX:+HeapDumpOnOutOfMemoryError switch
_ invaluable for tracking down memory leaks
_ an offscreen JAVA2D graphics needs loadPixels() before being drawn
_ i.e. offscreen JAVA2D, then image() with OPENGL renderer as main