root / trunk / libraries / libTopology / src / com / vividsolutions / jcs / plugin / conflate / roads / dra / FindJoggedJunctionsPlugIn.java @ 22873
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package com.vividsolutions.jcs.plugin.conflate.roads.dra; |
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import java.awt.Color; |
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import com.vividsolutions.jcs.conflate.roads.model.RoadNode; |
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import com.vividsolutions.jcs.graph.DirectedEdge; |
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import com.vividsolutions.jts.geom.Coordinate; |
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import com.vividsolutions.jts.util.Assert; |
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import com.vividsolutions.jump.feature.*; |
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import com.vividsolutions.jump.geom.Angle; |
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import com.vividsolutions.jump.util.StringUtil; |
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import com.vividsolutions.jump.workbench.WorkbenchContext; |
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import com.vividsolutions.jump.workbench.model.Layer; |
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import com.vividsolutions.jump.workbench.model.LayerManager; |
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import com.vividsolutions.jump.workbench.ui.MultiInputDialog; |
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public class FindJoggedJunctionsPlugIn extends |
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AbstractFindTopologyFromNodesPlugIn {
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protected void addMatchingTopologyFeatures(RoadNode node, |
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FeatureCollection featureCollection) {
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Feature joggedJunctionFeature = joggedJunctionFeature(node); |
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if (joggedJunctionFeature != null) { |
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featureCollection.add(joggedJunctionFeature); |
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} |
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} |
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private Coordinate coordinate(int i, DirectedEdge d) { |
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return d.getEdgeDirection() ? line(d).getCoordinateN(i) : line(d)
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.getCoordinateN(line(d).getNumPoints() - 1 - i);
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} |
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private Feature createJoggedJunctionFeature(DirectedEdge jogEdge0,
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DirectedEdge nextEdge0, DirectedEdge jogEdge1, |
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DirectedEdge nextEdge1) {
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Feature feature = new BasicFeature(schema);
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feature.setAttribute("GEOMETRY", getFactory().createPoint(
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jogEdge0.getFromNode().getCoordinate())); |
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feature.setAttribute("OFFSET", new Double(offset(jogEdge0, nextEdge0, |
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jogEdge1, nextEdge1))); |
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feature.setAttribute("KINK ANGLE",
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new Double(Angle.toDegrees(kinkAngle(jogEdge0, nextEdge0, |
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jogEdge1, nextEdge1)))); |
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feature.setAttribute("SOURCE", network(jogEdge0).getName());
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return feature;
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} |
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protected Layer createLayer(FeatureCollection featureCollection,
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LayerManager layerManager) {
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return new Layer("Jogged Junctions", Color.black, featureCollection, |
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layerManager); |
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} |
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private double firstSegmentAngle(DirectedEdge d) { |
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return Angle.angle(coordinate(0, d), coordinate(1, d)); |
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} |
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protected FeatureSchema getSchema() {
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return schema;
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} |
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private double kinkAngle(DirectedEdge jogEdge0, DirectedEdge nextEdge0, |
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DirectedEdge jogEdge1, DirectedEdge nextEdge1) {
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return Math.PI |
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- Math.min(Angle.diff(firstSegmentAngle(jogEdge0),
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secondSegmentAngle(jogEdge0)), Angle.diff( |
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firstSegmentAngle(jogEdge1), |
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secondSegmentAngle(jogEdge1))); |
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} |
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private Feature joggedJunctionFeature(DirectedEdge jogEdge0,
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DirectedEdge nextEdge0, DirectedEdge jogEdge1, |
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DirectedEdge nextEdge1) {
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if (line(jogEdge0).getNumPoints() < 3) { |
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return null; |
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} |
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if (line(jogEdge1).getNumPoints() < 3) { |
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return null; |
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} |
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if (kinkAngle(jogEdge0, nextEdge0, jogEdge1, nextEdge1) > maxKinkAngle) {
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return null; |
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} |
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if (offset(jogEdge0, nextEdge0, jogEdge1, nextEdge1) > maxOffset) {
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return null; |
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} |
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if (Angle.getTurn(firstSegmentAngle(nextEdge0),
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firstSegmentAngle(jogEdge0)) != Angle.getTurn( |
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firstSegmentAngle(jogEdge0), secondSegmentAngle(jogEdge0))) {
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return null; |
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} |
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if (Angle.getTurn(firstSegmentAngle(nextEdge1),
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firstSegmentAngle(jogEdge1)) != Angle.getTurn( |
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firstSegmentAngle(jogEdge1), secondSegmentAngle(jogEdge1))) {
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return null; |
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} |
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return createJoggedJunctionFeature(jogEdge0, nextEdge0, jogEdge1,
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nextEdge1); |
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} |
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private Feature joggedJunctionFeature(RoadNode node) {
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if (node.getDegree() != 4) { |
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return null; |
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} |
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DirectedEdge[] directedEdges = (DirectedEdge[]) node.getOutEdges() |
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.getEdges().toArray(new DirectedEdge[4]); |
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Feature joggedJunctionFeature = joggedJunctionFeature(directedEdges[0],
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directedEdges[1], directedEdges[2], directedEdges[3]); |
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if (joggedJunctionFeature != null) { |
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return joggedJunctionFeature;
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} |
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joggedJunctionFeature = joggedJunctionFeature(directedEdges[1],
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directedEdges[0], directedEdges[3], directedEdges[2]); |
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if (joggedJunctionFeature != null) { |
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return joggedJunctionFeature;
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} |
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joggedJunctionFeature = joggedJunctionFeature(directedEdges[1],
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directedEdges[2], directedEdges[3], directedEdges[0]); |
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if (joggedJunctionFeature != null) { |
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return joggedJunctionFeature;
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} |
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joggedJunctionFeature = joggedJunctionFeature(directedEdges[2],
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directedEdges[1], directedEdges[0], directedEdges[3]); |
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if (joggedJunctionFeature != null) { |
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return joggedJunctionFeature;
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} |
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return null; |
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} |
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protected String noTopologiesFoundMessage() { |
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return "No jogged junctions found"; |
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} |
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private double offset(DirectedEdge jogEdge, DirectedEdge nextEdge) { |
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return firstSegmentLength(jogEdge)
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* Math.sin(Angle.diff(firstSegmentAngle(jogEdge),
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secondSegmentAngle(jogEdge))) |
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/ Math.sin(supplement(Angle.diff(firstSegmentAngle(nextEdge),
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secondSegmentAngle(jogEdge)))); |
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} |
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private double offset(DirectedEdge jogEdge0, DirectedEdge nextEdge0, |
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DirectedEdge jogEdge1, DirectedEdge nextEdge1) {
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return offset(jogEdge0, nextEdge0) + offset(jogEdge1, nextEdge1);
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} |
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protected boolean prompt(WorkbenchContext context) { |
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final MultiInputDialog dialog = new MultiInputDialog(context |
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.getWorkbench().getFrame(), getName(), true);
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final String maxOffsetDescription = "Max Offset"; |
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final String maxKinkAngleDescription = "Max Kink Angle (degrees)"; |
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addNumericField(20, maxOffsetDescription, dialog, context);
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addAcuteAngleField(175, 180, maxKinkAngleDescription, dialog, context); |
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dialog.setVisible(true);
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if (!dialog.wasOKPressed()) {
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return false; |
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} |
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maxOffset = value(maxOffsetDescription, dialog, context); |
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maxKinkAngle = Angle.toRadians(value(maxKinkAngleDescription, dialog, |
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context)); |
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return true; |
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} |
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private double secondSegmentAngle(DirectedEdge d) { |
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return Angle.angle(coordinate(1, d), coordinate(2, d)); |
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} |
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private double supplement(double angle) { |
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Assert.isTrue(Math.PI >= angle);
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return Math.PI - angle; |
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} |
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protected String topologiesFoundMessage(int topologies) { |
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return topologies + " jogged junction" + StringUtil.s(topologies) |
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+ " found";
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} |
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private double maxKinkAngle; |
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private double maxOffset; |
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private FeatureSchema schema = new FeatureSchema() { |
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{
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addAttribute("GEOMETRY", AttributeType.GEOMETRY);
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addAttribute("OFFSET", AttributeType.DOUBLE);
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addAttribute("KINK ANGLE", AttributeType.DOUBLE);
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addAttribute("SOURCE", AttributeType.STRING);
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} |
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}; |
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} |