--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/model/minfo/BedDiffEpochFilterFacet.java	Thu Apr 25 15:23:37 2013 +0200
@@ -0,0 +1,80 @@
+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.FLYSArtifact;
+import org.dive4elements.river.artifacts.access.RiverAccess;
+import org.dive4elements.river.artifacts.context.FLYSContext;
+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 BedDiffEpochFilterFacet
+extends DataFacet
+{
+    private static Logger logger = Logger.getLogger(BedDensityFacet.class);
+
+    public BedDiffEpochFilterFacet() {
+    }
+
+    public BedDiffEpochFilterFacet(int idx, String name, String description,
+        ComputeType type, String stateId, String hash) {
+        super(idx, name, description, type, hash, stateId);
+    }
+
+    public Object getData(Artifact artifact, CallContext context) {
+        logger.debug("Get data for bed density at index: " + index);
+
+        FLYSArtifact flys = (FLYSArtifact) artifact;
+
+        CalculationResult res = (CalculationResult) flys.compute(context, hash,
+            stateId, type, false);
+
+        BedDiffEpochResult[] data =
+            (BedDiffEpochResult[]) res.getData(); // TODO CAST TO SPECIFIC CLASS
+        Double start = (Double)context.getContextValue("startkm");
+        Double end = (Double)context.getContextValue("endkm");
+
+        if(start != null && end != null) {
+            FLYSContext fc = (FLYSContext)context.globalContext();
+            ZoomScale scales = (ZoomScale)fc.get("zoomscale");
+            RiverAccess access = new RiverAccess((FLYSArtifact)artifact);
+            String river = access.getRiver();
+
+            double radius = scales.getRadius(river, start, end);
+            BedDiffEpochResult oldData = data[index];
+            BedDiffEpochResult newData = new BedDiffEpochResult();
+            newData.setStart(oldData.getStart());
+            newData.setEnd(oldData.getEnd());
+            double[][] diffs = MovingAverage.weighted(oldData.getDifferencesData(), radius);
+            double[][] heights1 = MovingAverage.weighted(oldData.getHeights1Data(), radius);
+            double[][] heights2 = MovingAverage.weighted(oldData.getHeights2Data(), radius);
+            for(int j = 0; j < diffs[0].length; j++) {
+                newData.addKm(diffs[0][j]);
+                newData.addDifference(diffs[1][j]);
+                newData.addHeight1(heights1[1][j]);
+                newData.addHeight2(heights2[1][j]);
+            }
+            return newData;
+        }
+        return data != null && data.length > index ? data[index] : null;
+    }
+
+    /** Copy deeply. */
+    @Override
+    public Facet deepCopy() {
+        BedDiffEpochFilterFacet copy = new BedDiffEpochFilterFacet();
+        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 :