[Geotools-commits] svn - r38617 - in branches/2.7.x/modules/library/coverage/src: main/java/org/geotools/image/palette test/java/org/geotools/image/palette

[<svn...@os...>]

Author: aaime
Date: 2012-03-08 06:14:21 -0800 (Thu, 08 Mar 2012)
New Revision: 38617

Modified:
   branches/2.7.x/modules/library/coverage/src/main/java/org/geotools/image/palette/CustomPaletteBuilder.java
   branches/2.7.x/modules/library/coverage/src/test/java/org/geotools/image/palette/CustomPaletteBuilderTest.java
Log:
[GEOT-4065] CustomPaletteBuilder may fail on images with shifted tile origin

Modified: branches/2.7.x/modules/library/coverage/src/main/java/org/geotools/image/palette/CustomPaletteBuilder.java
===================================================================
--- branches/2.7.x/modules/library/coverage/src/main/java/org/geotools/image/palette/CustomPaletteBuilder.java	2012-03-08 14:13:58 UTC (rev 38616)
+++ branches/2.7.x/modules/library/coverage/src/main/java/org/geotools/image/palette/CustomPaletteBuilder.java	2012-03-08 14:14:21 UTC (rev 38617)
@@ -173,12 +173,18 @@
 
 				int minx = r.getMinX();
 				int miny = r.getMinY();
+				int sampleModelTx = r.getSampleModelTranslateX();
+				int sampleModelTy = r.getSampleModelTranslateY();
+				
 				minx = minx < minx_ ? minx_ : minx;
 				miny = miny < miny_ ? miny_ : miny;
 				int maxx = minx + tileW;
 				int maxy = miny + tileH;
-				maxx = maxx > maxx_ ? maxx_ : maxx;
-				maxy = maxy > maxy_ ? maxy_ : maxy;
+				int maxxR = maxx + sampleModelTx;
+				int maxyR = maxy + sampleModelTy;
+				maxx = maxx > maxx_ ? (maxx_ > maxxR ? maxxR : maxx_) : (maxx > maxxR ? maxxR : maxx);
+				maxy = maxy > maxy_ ? (maxy_ > maxyR ? maxyR : maxy_) : (maxy > maxyR ? maxyR : maxy);
+				
 				actualWidth = maxx - minx;
 				actualHeight = maxy - miny;
 				for (int j = miny, jj = dstTempY; j < maxy; j++, jj++) {
@@ -316,12 +322,17 @@
 
 				int minx = r.getMinX();
 				int miny = r.getMinY();
+				int sampleModelTx = r.getSampleModelTranslateX();
+				int sampleModelTy = r.getSampleModelTranslateY();
 				minx = minx < minx_ ? minx_ : minx;
 				miny = miny < miny_ ? miny_ : miny;
 				int maxx = minx + tileW;
 				int maxy = miny + tileH;
-				maxx = maxx > maxx_ ? maxx_ : maxx;
-				maxy = maxy > maxy_ ? maxy_ : maxy;
+				int maxxR = maxx + sampleModelTx;
+				int maxyR = maxy + sampleModelTy;
+				maxx = maxx > maxx_ ? (maxx_ > maxxR ? maxxR : maxx_) : (maxx > maxxR ? maxxR : maxx);
+				maxy = maxy > maxy_ ? (maxy_ > maxyR ? maxyR : maxy_) : (maxy > maxyR ? maxyR : maxy);
+				
 				for (int j = miny; j < maxy; j++) {
 					if ((subsampley > 1) && ((j % subsampley) != 0)) {
 						continue;

Modified: branches/2.7.x/modules/library/coverage/src/test/java/org/geotools/image/palette/CustomPaletteBuilderTest.java
===================================================================
--- branches/2.7.x/modules/library/coverage/src/test/java/org/geotools/image/palette/CustomPaletteBuilderTest.java	2012-03-08 14:13:58 UTC (rev 38616)
+++ branches/2.7.x/modules/library/coverage/src/test/java/org/geotools/image/palette/CustomPaletteBuilderTest.java	2012-03-08 14:14:21 UTC (rev 38617)
@@ -19,20 +19,25 @@
 import java.awt.Color;
 import java.awt.Graphics;
 import java.awt.image.BufferedImage;
+import java.awt.image.ColorModel;
 import java.awt.image.IndexColorModel;
 import java.awt.image.RenderedImage;
+import java.awt.image.SampleModel;
 
 import javax.media.jai.ImageLayout;
 import javax.media.jai.JAI;
 import javax.media.jai.OperationDescriptor;
 import javax.media.jai.ParameterBlockJAI;
 import javax.media.jai.PlanarImage;
+import javax.media.jai.TiledImage;
 
 import junit.framework.TestCase;
 
 import org.geotools.image.ImageWorker;
 import org.junit.Test;
 
+import com.sun.media.jai.codecimpl.util.RasterFactory;
+
 /**
  * Testing custom code for color reduction.
  * 
@@ -97,6 +102,26 @@
 		
 	}
 	
+	@Test
+    public void testTranslatedImage() {
+	    BufferedImage bi = new BufferedImage(256, 256, BufferedImage.TYPE_BYTE_GRAY);
+        TiledImage image = new TiledImage(0, 0, 256, 256, 1, 1, bi.getSampleModel().createCompatibleSampleModel(256, 256), bi.getColorModel());
+        Graphics g = image.createGraphics();
+        g.setColor(Color.WHITE);
+        g.fillRect(0, 0, 20, 20);
+        g.setColor(new Color(20, 20, 20)); // A dark gray
+        g.fillRect(20, 20, 20, 20);
+        g.setColor(new Color(200, 200, 200)); // A light gray
+        g.fillRect(0, 20, 20, 20);
+        g.dispose();
+        CustomPaletteBuilder builder = new CustomPaletteBuilder(image, 256, 1, 1, 1);
+        RenderedImage indexed =  builder.buildPalette().getIndexedImage();
+        assertTrue(indexed.getColorModel() instanceof IndexColorModel);
+        IndexColorModel icm = (IndexColorModel) indexed.getColorModel();
+        assertEquals(4, icm.getMapSize()); //Black background, white fill, light gray fill, dark gray fill = 4 colors
+        
+    }
+	
     
     @Test
     public void testFourColor() {