--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gnv-artifacts/src/main/java/de/intevation/gnv/raster/IsoAttributeGenerator.java	Fri Sep 28 12:13:53 2012 +0200
@@ -0,0 +1,34 @@
+package de.intevation.gnv.raster;
+
+/**
+ * @author Sascha L. Teichmann (sascha.teichmann@intevation.de)
+ */
+public class IsoAttributeGenerator
+implements   IsoProducer.AttributeGenerator
+{
+    protected Palette palette;
+
+    public IsoAttributeGenerator() {
+    }
+
+    public IsoAttributeGenerator(Palette palette) {
+        this.palette = palette;
+    }
+
+    public Object generateAttribute(int neighbor1, int neighbor2) {
+        Palette.Entry e1 = palette.getEntryByIndex(neighbor1);
+        Palette.Entry e2 = palette.getEntryByIndex(neighbor2);
+
+        if (e1 == null || e2 == null) {
+            return null;
+        }
+
+        double e1t = e1.getFrom();
+        double e2f = e2.getTo();
+
+        return Double.valueOf(e2f >= e1t
+            ? 0.5d*(e1t+e2f)
+            : 0.5d*(e2.getTo()+e1.getFrom()));
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8: