--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/BedDiffFilterFacet.java	Tue Jul 01 15:09:56 2014 +0200
@@ -0,0 +1,79 @@
+/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
+ * Software engineering by Intevation GmbH
+ *
+ * This file is Free Software under the GNU AGPL (>=v3)
+ * and comes with ABSOLUTELY NO WARRANTY! Check out the
+ * documentation coming with Dive4Elements River for details.
+ */
+
+package org.dive4elements.river.artifacts.model.minfo;
+
+import org.apache.log4j.Logger;
+
+import org.dive4elements.artifactdatabase.state.Facet;
+import org.dive4elements.artifacts.Artifact;
+import org.dive4elements.artifacts.CallContext;
+import org.dive4elements.river.artifacts.D4EArtifact;
+import org.dive4elements.river.artifacts.access.RiverAccess;
+import org.dive4elements.river.artifacts.context.RiverContext;
+import org.dive4elements.river.artifacts.model.CalculationResult;
+import org.dive4elements.river.artifacts.model.DataFacet;
+import org.dive4elements.river.artifacts.math.MovingAverage;
+import org.dive4elements.river.artifacts.model.ZoomScale;
+import org.dive4elements.river.artifacts.states.DefaultState.ComputeType;
+
+
+public class BedDiffFilterFacet
+extends DataFacet
+{
+    private static Logger logger = Logger.getLogger(BedDiffFilterFacet.class);
+
+    public BedDiffFilterFacet() {
+    }
+
+    public BedDiffFilterFacet(int idx, String name, String description,
+        ComputeType type, String stateId, String hash) {
+        super(idx, name, description, type, hash, stateId);
+        this.metaData.put("X", "chart.longitudinal.section.xaxis.label");
+        this.metaData.put("Y", "chart.beddifference.height.yaxis.label");
+    }
+
+    public Object getData(Artifact artifact, CallContext context) {
+        logger.debug("Get data for bed density at index: " + index);
+
+        D4EArtifact flys = (D4EArtifact) artifact;
+
+        CalculationResult res = (CalculationResult) flys.compute(context, hash,
+            stateId, type, false);
+
+        BedDiffYearResult[] data =
+            (BedDiffYearResult[]) res.getData(); // TODO CAST TO SPECIFIC CLASS
+        Double start = (Double)context.getContextValue("startkm");
+        Double end = (Double)context.getContextValue("endkm");
+        if(start != null && end != null) {
+            RiverContext fc = (RiverContext)context.globalContext();
+            // Adaptive smoothing, based on zoom factor/diagram extents.
+            ZoomScale scales = (ZoomScale)fc.get("zoomscale");
+            RiverAccess access = new RiverAccess((D4EArtifact)artifact);
+            String river = access.getRiverName();
+
+            double radius = scales.getRadius(river, start, end);
+            BedDiffYearResult oldData = data[index];
+            double[][] diffs = MovingAverage.weighted(oldData.getDifferencesData(), radius);
+            return diffs;
+        }
+        return null;
+    }
+
+    /** Copy deeply. */
+    @Override
+    public Facet deepCopy() {
+        BedDiffFilterFacet copy = new BedDiffFilterFacet();
+        copy.set(this);
+        copy.type = type;
+        copy.hash = hash;
+        copy.stateId = stateId;
+        return copy;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :