[Dive4elements-commits] [PATCH] Use floating point calculation for floodmap colors

[Wald Commits]

# HG changeset patch
# User Christian Lins <christian.lins at intevation.de>
# Date 1354271549 -3600
# Node ID 047c965ea5423c30e64ea3d6dd673f6948d903b6
# Parent  11545c3b9111288a768be46a769dea86bf42df7a
Use floating point calculation for floodmap colors.

diff -r 11545c3b9111 -r 047c965ea542 flys-artifacts/src/main/java/de/intevation/flys/utils/ThemeUtil.java
--- a/flys-artifacts/src/main/java/de/intevation/flys/utils/ThemeUtil.java	Thu Nov 29 15:34:33 2012 +0100
+++ b/flys-artifacts/src/main/java/de/intevation/flys/utils/ThemeUtil.java	Fri Nov 30 11:32:29 2012 +0100
@@ -640,17 +640,17 @@
             numClasses = 20;
         }
 
-        int rd = (endColor.getRed()   - startColor.getRed())   / numClasses;
-        int gd = (endColor.getGreen() - startColor.getGreen()) / numClasses;
-        int bd = (endColor.getBlue()  - startColor.getBlue())  / numClasses;
+        float rd = (endColor.getRed()   - startColor.getRed())   / (float)numClasses;
+        float gd = (endColor.getGreen() - startColor.getGreen()) / (float)numClasses;
+        float bd = (endColor.getBlue()  - startColor.getBlue())  / (float)numClasses;
 
         for (int n = 0; n < numClasses; n++) {
             StringBuilder newColor = new StringBuilder();
-            newColor.append(startColor.getRed()   + n * rd);
+            newColor.append(startColor.getRed()   + Math.round(n * rd));
             newColor.append(' ');
-            newColor.append(startColor.getGreen() + n * gd);
+            newColor.append(startColor.getGreen() + Math.round(n * gd));
             newColor.append(' ');
-            newColor.append(startColor.getBlue()  + n * bd);
+            newColor.append(startColor.getBlue()  + Math.round(n * bd));
 
             String expr = createWSPLGENExpression(n + 1, numClasses);