# HG changeset patch
# User Raimund Renkert <rrenkert@intevation.de>
# Date 1354551008 -3600
# Node ID 5b551e3a58d53b60ccb4b1422908bd61d44842cd
# Parent  d6d16b5ab2f07cb63651ee2fe3f1b4e1c2d454fb
Add start and end km of current chart zoomlevel to the context and use these
values to calculate the moving average.

diff -r d6d16b5ab2f0 -r 5b551e3a58d5 flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/FlowVelocityFacet.java
--- a/flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/FlowVelocityFacet.java	Mon Dec 03 17:08:39 2012 +0100
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/FlowVelocityFacet.java	Mon Dec 03 17:10:08 2012 +0100
@@ -7,6 +7,8 @@
 
 import de.intevation.flys.artifacts.FLYSArtifact;
 
+import de.intevation.flys.artifacts.access.RiverAccess;
+import de.intevation.flys.artifacts.context.FLYSContext;
 import de.intevation.flys.artifacts.states.DefaultState.ComputeType;
 
 import org.apache.log4j.Logger;
@@ -39,13 +41,36 @@
     public Object getData(Artifact artifact, CallContext context) {
         logger.debug("Get data for flow velocity at index: " + index);
 
+        Double start = (Double)context.getContextValue("startkm");
+        Double end = (Double)context.getContextValue("endkm");
         FLYSArtifact flys = (FLYSArtifact) artifact;
 
         CalculationResult res = (CalculationResult)
             flys.compute(context, hash, stateId, type, false);
 
         FlowVelocityData[] data = (FlowVelocityData[]) res.getData();
+        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);
+            FlowVelocityData oldData = data[index];
+            FlowVelocityData newData = new FlowVelocityData();
+            double[][] q = oldData.getQPoints();
+            double[][] totalV = MovingAverage.weighted(oldData.getTotalChannelPoints(), radius);
+            double[][] mainV = MovingAverage.weighted(oldData.getMainChannelPoints(), radius);
+            double[][] tau = MovingAverage.weighted(oldData.getTauPoints(), radius);
+            for(int j = 0; j < q[0].length; j++) {
+                newData.addKM(q[0][j]);
+                newData.addQ(q[1][j]);
+                newData.addTauMain(tau[1][j]);
+                newData.addVMain(mainV[1][j]);
+                newData.addVTotal(totalV[1][j]);
+            }
+            return newData;
+        }
         return data[index];
     }
 
diff -r d6d16b5ab2f0 -r 5b551e3a58d5 flys-artifacts/src/main/java/de/intevation/flys/exports/FlowVelocityGenerator.java
--- a/flys-artifacts/src/main/java/de/intevation/flys/exports/FlowVelocityGenerator.java	Mon Dec 03 17:08:39 2012 +0100
+++ b/flys-artifacts/src/main/java/de/intevation/flys/exports/FlowVelocityGenerator.java	Mon Dec 03 17:10:08 2012 +0100
@@ -1,5 +1,7 @@
 package de.intevation.flys.exports;
 
+import java.util.Arrays;
+
 import org.apache.log4j.Logger;
 
 import org.jfree.data.xy.XYSeries;
@@ -11,10 +13,13 @@
 
 import de.intevation.flys.artifacts.FLYSArtifact;
 
+import de.intevation.flys.artifacts.access.FlowVelocityAccess;
 import de.intevation.flys.artifacts.model.FacetTypes;
 import de.intevation.flys.artifacts.model.FlowVelocityData;
 import de.intevation.flys.model.FlowVelocityMeasurementValue;
 
+import de.intevation.flys.jfree.Bounds;
+import de.intevation.flys.jfree.DoubleBounds;
 import de.intevation.flys.jfree.FLYSAnnotation;
 import de.intevation.flys.jfree.StyledXYSeries;
 
@@ -201,6 +206,32 @@
             return;
         }
 
+        if (getXBounds(0) != null && getDomainAxisRange() != null) {
+            logger.debug(Arrays.toString(getDomainAxisRangeFromRequest()));
+            Bounds bounds =
+                calculateZoom(getXBounds(0), getDomainAxisRange());
+            context.putContextValue("startkm", bounds.getLower());
+            context.putContextValue("endkm", bounds.getUpper());
+        }
+        else if (getXBounds(0) != null && getDomainAxisRange() == null) {
+            context.putContextValue("startkm", getXBounds(0).getLower());
+            context.putContextValue("endkm", getXBounds(0).getUpper());
+        }
+        else if (getXBounds(0) == null && getDomainAxisRange() == null) {
+            FLYSArtifact artifact = (FLYSArtifact)artifactAndFacet.getArtifact();
+            FlowVelocityAccess access = new FlowVelocityAccess(artifact);
+            context.putContextValue("startkm", access.getLowerKM());
+            context.putContextValue("endkm", access.getUpperKM());
+        }
+        else if (getXBounds(0) == null && getDomainAxisRange() != null){
+            FLYSArtifact artifact = (FLYSArtifact)artifactAndFacet.getArtifact();
+            FlowVelocityAccess access = new FlowVelocityAccess(artifact);
+            Bounds b = new DoubleBounds(access.getLowerKM(), access.getUpperKM());
+            Bounds bounds =
+                calculateZoom(b, getDomainAxisRange());
+            context.putContextValue("startkm", bounds.getLower());
+            context.putContextValue("endkm", bounds.getUpper());
+        }
         if (name.equals(FLOW_VELOCITY_MAINCHANNEL)) {
             doMainChannelOut(
                 (FlowVelocityData) artifactAndFacet.getData(context),