view flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/FlowVelocityFacet.java @ 4655:cd44d28d0fbc

Move the access to artifact data to the Access object Use BedHeightAccess class to receive the data from the artifact. This abstracts the data access from the actual artifact.
author Björn Ricks <bjoern.ricks@intevation.de>
date Tue, 11 Dec 2012 09:44:04 +0100
parents 63368dcc3f94
children 87c938d082d6
line wrap: on
line source
package de.intevation.flys.artifacts.model;

import de.intevation.artifactdatabase.state.Facet;

import de.intevation.artifacts.Artifact;
import de.intevation.artifacts.CallContext;

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.math.MovingAverage;
import de.intevation.flys.artifacts.states.DefaultState.ComputeType;

import org.apache.log4j.Logger;

/**
 * Facet of a FlowVelocity curve.
 */
public class FlowVelocityFacet extends DataFacet {

    private static Logger logger = Logger.getLogger(FlowVelocityFacet.class);

    public FlowVelocityFacet() {
        // required for clone operation deepCopy()
    }


    public FlowVelocityFacet(
        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 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];
    }


    /** Copy deeply. */
    @Override
    public Facet deepCopy() {
        FlowVelocityFacet copy = new FlowVelocityFacet();
        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 :

http://dive4elements.wald.intevation.org