com.esri.geoevent.solutions.processor.ellipse.EllipseProcessor.java Source code

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Here is the source code for com.esri.geoevent.solutions.processor.ellipse.EllipseProcessor.java

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package com.esri.geoevent.solutions.processor.ellipse;

/*
 * #%L
 * Esri :: AGES :: Solutions :: Processor :: Geometry
 * $Id:$
 * $HeadURL:$
 * %%
 * Copyright (C) 2013 - 2014 Esri
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */

import java.util.HashMap;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.esri.core.geometry.Geometry;
import com.esri.core.geometry.GeometryEngine;
import com.esri.core.geometry.MapGeometry;
import com.esri.core.geometry.Point;
import com.esri.core.geometry.Polygon;
import com.esri.core.geometry.SpatialReference;
import com.esri.ges.core.component.ComponentException;
import com.esri.ges.core.geoevent.GeoEvent;
import com.esri.ges.processor.GeoEventProcessorBase;
import com.esri.ges.processor.GeoEventProcessorDefinition;

public class EllipseProcessor extends GeoEventProcessorBase {
    private static HashMap<String, Integer> wkidLookup = new HashMap<String, Integer>();
    private static final Log LOG = LogFactory.getLog(EllipseProcessor.class);
    private Double majorAxisRadius = Double.NaN;
    private String majorAxisField;
    private Double minorAxisRadius = Double.NaN;
    private String minorAxisField;
    private Double rotation = Double.NaN;
    private String rotationField;
    private String units;
    private Integer inwkid;
    private Integer outwkid;
    private Integer procwkid;

    public EllipseProcessor(GeoEventProcessorDefinition definition) throws ComponentException {
        super(definition);
        wkidLookup.put("METER", 9001);
        wkidLookup.put("KILOMETER", 9036);
        wkidLookup.put("FOOT_US", 9003);
        wkidLookup.put("MILE_US", 9035);
        wkidLookup.put("NAUTICAL_MILE", 9030);
        geoEventMutator = true;
    }

    @Override
    public void afterPropertiesSet() {
        String majAxisSource = properties.get("majorAxisSource").getValue().toString();
        if (majAxisSource.equals("Constant")) {
            majorAxisRadius = (Double) properties.get("majorAxisRadius").getValue();
        } else {
            majorAxisField = properties.get("majorAxisEvent").getValueAsString();
        }
        String minAxisSource = properties.get("minorAxisSource").getValue().toString();
        if (minAxisSource.equals("Constant")) {
            minorAxisRadius = (Double) properties.get("minorAxisRadius").getValue();
        } else {
            minorAxisField = properties.get("minorAxisEvent").getValueAsString();
        }

        String rotSource = properties.get("rotationSource").getValue().toString();
        if (rotSource.equals("Constant")) {
            rotation = (Double) properties.get("rotation").getValue();
        } else {
            rotationField = properties.get("rotationEvent").getValueAsString();
        }
        units = properties.get("units").getValue().toString();
        //inwkid = (Integer) properties.get("wkidin").getValue();
        outwkid = (Integer) properties.get("wkidout").getValue();
        procwkid = (Integer) properties.get("wkidbuffer").getValue();
    }

    @Override
    public GeoEvent process(GeoEvent ge) throws Exception {

        if (!ge.getGeoEventDefinition().getTagNames().contains("GEOMETRY")) {
            return null;
        }
        inwkid = ge.getGeometry().getSpatialReference().getID();
        if (majorAxisRadius.isNaN()) {
            majorAxisRadius = (Double) ge.getField(majorAxisField);
        }
        if (minorAxisRadius.isNaN()) {
            minorAxisRadius = (Double) ge.getField(minorAxisField);
        }
        if (rotation.isNaN()) {
            rotation = (Double) ge.getField(rotationField);
        }

        MapGeometry mapGeo = ge.getGeometry();
        Geometry geo = mapGeo.getGeometry();
        if (!(geo instanceof Point)) {
            return null;
        }
        Point eventGeo = (Point) geo;
        double x = eventGeo.getX();
        double y = eventGeo.getY();
        double rdeg = GeometryUtility.Geo2Arithmetic(rotation);
        double r = Math.toRadians(rdeg);
        MapGeometry ellipse = constructEllipse(x, y, majorAxisRadius, minorAxisRadius, r, inwkid, procwkid,
                outwkid);
        ge.setGeometry(ellipse);
        return ge;
    }

    private MapGeometry constructEllipse(double x, double y, double majorAxis, double minorAxis, double rotation,
            int wkidin, int wkidbuffer, int wkidout) {
        Point center = new Point();
        center.setX(x);
        center.setY(y);
        SpatialReference srIn = SpatialReference.create(wkidin);
        SpatialReference srBuffer = SpatialReference.create(wkidbuffer);
        SpatialReference srOut = SpatialReference.create(wkidout);
        UnitConverter uc = new UnitConverter();
        majorAxis = uc.Convert(majorAxis, units, srBuffer);
        minorAxis = uc.Convert(minorAxis, units, srBuffer);
        Point centerProj = (Point) GeometryEngine.project(center, srIn, srBuffer);
        GeometryUtility geoutil = new GeometryUtility();
        Polygon ellipse = geoutil.GenerateEllipse(centerProj, majorAxis, minorAxis, rotation);
        Geometry ellipseOut = GeometryEngine.project(ellipse, srBuffer, srOut);
        MapGeometry mapGeo = new MapGeometry(ellipseOut, srOut);
        return mapGeo;
    }

}