--- a/flys-artifacts/ChangeLog	Mon Sep 26 13:37:30 2011 +0000
+++ b/flys-artifacts/ChangeLog	Mon Sep 26 15:35:46 2011 +0000
@@ -1,3 +1,13 @@
+2011-09-26  Ingo Weinzierl <ingo@intevation.de>
+
+	* src/main/java/de/intevation/flys/artifacts/states/FloodMapState.java:
+	  The extent of the WSPLGEN result layer is now specified by the extent of
+	  the CrossSectionTracks that matches the start and end kilometer of the
+	  WSPLGEN calculation.
+
+	* src/main/java/de/intevation/flys/utils/GeometryUtils.java: New function
+	  that creates the OpenLayers bounding box based on two Geometries.
+
 2011-09-26  Felix Wolfsteller <felix.wolfsteller@intevation.de>
 
  Improved w-differences diagram generation with included "absolute"

--- a/flys-artifacts/src/main/java/de/intevation/flys/artifacts/states/FloodMapState.java	Mon Sep 26 13:37:30 2011 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/states/FloodMapState.java	Mon Sep 26 15:35:46 2011 +0000
@@ -126,6 +126,23 @@
             return FLYSUtils.getRiverSrid(artifact);
         }
 
+        protected String getWSPLGENBounds() {
+            String river = getRiver();
+            double kms[] = FLYSUtils.getKmRange(artifact);
+
+            CrossSectionTrack a =
+                CrossSectionTrack.getCrossSectionTrack(river, kms[0]);
+
+            CrossSectionTrack b =
+                CrossSectionTrack.getCrossSectionTrack(river, kms[1]);
+
+            if (a == null || b == null) {
+                return null;
+            }
+
+            return GeometryUtils.createOLBounds(a.getGeom(), b.getGeom());
+        }
+
         protected String getBounds() {
             return GeometryUtils.getRiverBounds(getRiver());
         }
@@ -147,10 +164,16 @@
                 hash,
                 getUrl());
 
+            String bounds = getWSPLGENBounds();
+
+            if (bounds == null || bounds.length() == 0) {
+                bounds = getBounds();
+            }
+
             wsplgen.addLayer(
                 artifact.identifier() + MapfileGenerator.MS_WSPLGEN_POSTFIX);
             wsplgen.setSrid(getSrid());
-            wsplgen.setExtent(getBounds());
+            wsplgen.setExtent(bounds);
 
             facets.add(wsplgen);
         }

--- a/flys-artifacts/src/main/java/de/intevation/flys/utils/GeometryUtils.java	Mon Sep 26 13:37:30 2011 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/utils/GeometryUtils.java	Mon Sep 26 15:35:46 2011 +0000
@@ -76,6 +76,35 @@
     }
 
 
+    public static String createOLBounds(Geometry a, Geometry b) {
+        Coordinate[] ca = a.getCoordinates();
+        Coordinate[] cb = b.getCoordinates();
+
+        double lowerX = Double.MAX_VALUE;
+        double lowerY = Double.MAX_VALUE;
+        double upperX = -Double.MAX_VALUE;
+        double upperY = -Double.MAX_VALUE;
+
+        for (Coordinate c: ca) {
+            lowerX = lowerX < c.x ? lowerX : c.x;
+            lowerY = lowerY < c.y ? lowerY : c.y;
+
+            upperX = upperX > c.x ? upperX : c.x;
+            upperY = upperY > c.y ? upperY : c.y;
+        }
+
+        for (Coordinate c: cb) {
+            lowerX = lowerX < c.x ? lowerX : c.x;
+            lowerY = lowerY < c.y ? lowerY : c.y;
+
+            upperX = upperX > c.x ? upperX : c.x;
+            upperY = upperY > c.y ? upperY : c.y;
+        }
+
+        return "" + lowerX + " " + lowerY + " " + upperX + " " + upperY;
+    }
+
+
     public static SimpleFeatureType buildFeatureType(
         String name, String srs, Class geometryType)
     {