arcdrawingtask.java

esri的ArcGIS Server超级学习模板程序（for java）

package com.esri.solutions.jitk.web.tasks.redlining.shape;

import java.util.LinkedHashMap;
import java.util.List;

import org.apache.log4j.Logger;

import com.esri.adf.web.data.geometry.WebCircle;
import com.esri.adf.web.data.geometry.WebGeometry;
import com.esri.adf.web.data.geometry.WebPoint;
import com.esri.adf.web.data.symbol.WebSimpleLineSymbol;
import com.esri.adf.web.faces.event.MapEvent;
import com.esri.solutions.jitk.common.math.UnitsOfMeasureMap;
import com.esri.solutions.jitk.web.data.geometry.ConcentricWebArcs;
import com.esri.solutions.jitk.web.data.geometry.WebArc;
import com.esri.solutions.jitk.web.tasks.redlining.map.ArcAnglesMap;
import com.esri.solutions.jitk.web.tasks.redlining.map.ConcentricArcCountMap;
import com.esri.solutions.jitk.web.tasks.redlining.map.LineTypeMap;

//Needed for use of WebCircle
@SuppressWarnings("deprecation")
public class ArcDrawingTask extends PolygonDrawingTask {
	
	private static final long serialVersionUID = 7296808088107951L;
	private static final Logger _logger = Logger.getLogger(ArcDrawingTask.class);
	
	protected com.esri.solutions.jitk.web.data.symbol.WebSimpleLineSymbol _arcSymbol = null;
	protected ConcentricWebArcs _webArc = null;
	protected double _webArcStartAngle = 0.0;
	protected double _webArcEndAngle = 360.0;
	protected int _arcCount = 1;
	protected double _arcDistance = 1.0;
	protected LinkedHashMap<Integer, String> _unitsOfMeasure = null;
	protected String _units = "";	
	
	protected ConcentricArcCountMap _arcCountMap = null;
	protected ArcAnglesMap _arcAnglesMap = null;
	protected ArcAnglesMap _arcAnglesMapReversed = null;	
	
	public void initArcProperties() {
	    
		_arcSymbol = new com.esri.solutions.jitk.web.data.symbol.WebSimpleLineSymbol();
	    _arcSymbol.setColor("255,0,0");
	    _arcSymbol.setAntialiasing(true);
	    _arcSymbol.setCapType(WebSimpleLineSymbol.ROUND);
	    _arcSymbol.setJoinType(WebSimpleLineSymbol.ROUND);
	    _arcSymbol.setLineType(LineTypeMap.LINE_TYPE[0]);
	    _arcSymbol.setWidth(1);
	    
	    _webArc = new ConcentricWebArcs(new WebPoint(), 0.0, _webArcStartAngle, _webArcEndAngle);
	    _webArc.setArcCount(1);
	    _webArc.setArcDistance(1.0);
	    _arcAnglesMap = new ArcAnglesMap(false);
	    _arcAnglesMapReversed = new ArcAnglesMap(true);
	    _arcCountMap = new ConcentricArcCountMap();
	    _unitsOfMeasure = new UnitsOfMeasureMap();
	}	
	
	public void placeArc(MapEvent event) {		
		
		try {
			_logger.info("Placing arc redline on map.");
			requestTaskRender();
			
			WebGeometry webGeo = event.getWebGeometry().toMapGeometry(event.getWebContext().getWebMap());
			
			if(webGeo instanceof WebCircle) {
				List<WebArc> arcs = getArcList(webGeo);
				
				for(WebArc arc : arcs) {	
					mgResource.addGraphicFeature(arc, (WebSimpleLineSymbol)_arcSymbol.clone());
				}
				
				event.getWebContext().refresh();
			
			} else throw new Exception("WebCircle not returned to placeArc event.");
		
		} catch (Exception ex) {
			renderExceptionMessage(ex);
			_logger.error("Could not place arc redline on map.", ex);
		}
	}
	
	protected List<WebArc> getArcList(WebGeometry webGeo) {
		
		WebCircle webCircle = (WebCircle) webGeo;
		ConcentricWebArcs concentricArcs = new ConcentricWebArcs(webCircle, _webArc.getStartAngle(), _webArc.getEndAngle());
		concentricArcs.setArcCount(_webArc.getArcCount());
		concentricArcs.setArcDistance(_webArc.getArcDistance());
		List<WebArc> arcs = concentricArcs.getArcList();
		
		return arcs;
	}
	
	public void setUnit(String unit) {
		_units = unit;
	}
	
	public String getUnit() {
		return _units;
	}
	
	public void setArcEndAngle(String angle) {
		_webArcEndAngle = Double.valueOf(angle.substring(0, angle.length() - 1));
		_webArc.setEndAngle(_webArcEndAngle);
	}
	
	public String getArcEndAngle() {
		return Double.valueOf(_webArc.getEndAngle()).intValue() + "