Source Code Cross Referenced for ShowTriangulationPlugIn.java in  » GIS » openjump » com » vividsolutions » jump » workbench » ui » plugin » generate » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » GIS » openjump » com.vividsolutions.jump.workbench.ui.plugin.generate 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * The Unified Mapping Platform (JUMP) is an extensible, interactive GUI 
003:         * for visualizing and manipulating spatial features with geometry and attributes.
004:         *
005:         * Copyright (C) 2003 Vivid Solutions
006:         * 
007:         * This program is free software; you can redistribute it and/or
008:         * modify it under the terms of the GNU General Public License
009:         * as published by the Free Software Foundation; either version 2
010:         * of the License, or (at your option) any later version.
011:         * 
012:         * This program is distributed in the hope that it will be useful,
013:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
014:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
015:         * GNU General Public License for more details.
016:         * 
017:         * You should have received a copy of the GNU General Public License
018:         * along with this program; if not, write to the Free Software
019:         * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
020:         * 
021:         * For more information, contact:
022:         *
023:         * Vivid Solutions
024:         * Suite #1A
025:         * 2328 Government Street
026:         * Victoria BC  V8T 5G5
027:         * Canada
028:         *
029:         * (250)385-6040
030:         * www.vividsolutions.com
031:         */
032:
033:        package com.vividsolutions.jump.workbench.ui.plugin.generate;
034:
035:        import java.awt.Color;
036:        import java.awt.Font;
037:        import java.util.Collection;
038:        import java.util.Iterator;
039:        import java.util.List;
040:        import java.util.Map;
041:
042:        import javax.swing.Icon;
043:
044:        import com.vividsolutions.jts.geom.Coordinate;
045:        import com.vividsolutions.jts.geom.Envelope;
046:        import com.vividsolutions.jts.geom.GeometryFactory;
047:        import com.vividsolutions.jts.geom.LineString;
048:        import com.vividsolutions.jump.I18N;
049:        import com.vividsolutions.jump.feature.AttributeType;
050:        import com.vividsolutions.jump.feature.BasicFeature;
051:        import com.vividsolutions.jump.feature.Feature;
052:        import com.vividsolutions.jump.feature.FeatureCollection;
053:        import com.vividsolutions.jump.feature.FeatureDataset;
054:        import com.vividsolutions.jump.feature.FeatureSchema;
055:        import com.vividsolutions.jump.task.DummyTaskMonitor;
056:        import com.vividsolutions.jump.util.CollectionUtil;
057:        import com.vividsolutions.jump.warp.Triangle;
058:        import com.vividsolutions.jump.warp.Triangulator;
059:        import com.vividsolutions.jump.workbench.WorkbenchContext;
060:        import com.vividsolutions.jump.workbench.model.Layer;
061:        import com.vividsolutions.jump.workbench.model.LayerManagerProxy;
062:        import com.vividsolutions.jump.workbench.model.StandardCategoryNames;
063:        import com.vividsolutions.jump.workbench.model.UndoableCommand;
064:        import com.vividsolutions.jump.workbench.plugin.AbstractPlugIn;
065:        import com.vividsolutions.jump.workbench.plugin.EnableCheck;
066:        import com.vividsolutions.jump.workbench.plugin.EnableCheckFactory;
067:        import com.vividsolutions.jump.workbench.plugin.MultiEnableCheck;
068:        import com.vividsolutions.jump.workbench.plugin.PlugInContext;
069:        import com.vividsolutions.jump.workbench.ui.images.IconLoader;
070:        import com.vividsolutions.jump.workbench.ui.warp.WarpingPanel;
071:        import com.vividsolutions.jump.workbench.ui.warp.WarpingVectorLayerFinder;
072:
073:        /**
074:         * See White, Marvin S., Jr. and Griffin, Patricia. 1985. Piecewise linear
075:         * rubber-sheet map transformation. "The American Cartographer" 12:2,
076:         * 123-31.
077:         */
078:        public class ShowTriangulationPlugIn extends AbstractPlugIn {
079:            private final static Color GOLD = new Color(255, 192, 0, 150);
080:            private Triangulator triangulator = new Triangulator();
081:
082:            public ShowTriangulationPlugIn(WarpingPanel warpingPanel) {
083:                this .warpingPanel = warpingPanel;
084:            }
085:
086:            private WarpingPanel warpingPanel;
087:
088:            public void initialize(PlugInContext context) throws Exception {
089:            }
090:
091:            public EnableCheck createEnableCheck(WorkbenchContext context) {
092:                EnableCheckFactory checkFactory = new EnableCheckFactory(
093:                        context);
094:                return new MultiEnableCheck().add(checkFactory
095:                        .createWindowWithLayerViewPanelMustBeActiveCheck());
096:            }
097:
098:            public final static String SOURCE_LAYER_NAME = I18N
099:                    .get("ui.plugin.generate.ShowTriangulationPlugIn.initial-triangulation");
100:            public final static String DESTINATION_LAYER_NAME = I18N
101:                    .get("ui.plugin.generate.ShowTriangulationPlugIn.final-triangulation");
102:
103:            private Layer sourceLayer(LayerManagerProxy layerManagerProxy) {
104:                return layerManagerProxy.getLayerManager().getLayer(
105:                        SOURCE_LAYER_NAME);
106:            }
107:
108:            private Layer destinationLayer(LayerManagerProxy layerManagerProxy) {
109:                return layerManagerProxy.getLayerManager().getLayer(
110:                        DESTINATION_LAYER_NAME);
111:            }
112:
113:            private WarpingVectorLayerFinder warpingVectorLayerFinder(
114:                    LayerManagerProxy proxy) {
115:                return new WarpingVectorLayerFinder(proxy);
116:            }
117:
118:            private Envelope envelopeOfTails(Collection vectors) {
119:                Envelope envelope = new Envelope();
120:                for (Iterator i = vectors.iterator(); i.hasNext();) {
121:                    LineString vector = (LineString) i.next();
122:                    envelope.expandToInclude(vector.getCoordinateN(0));
123:                }
124:                return envelope;
125:            }
126:
127:            public boolean execute(final PlugInContext context)
128:                    throws Exception {
129:                context.getLayerManager().getUndoableEditReceiver()
130:                        .reportNothingToUndoYet();
131:                execute(createCommand(context.getWorkbenchContext(), true),
132:                        context);
133:                return true;
134:            }
135:
136:            private UndoableCommand createCommand(
137:                    final WorkbenchContext context,
138:                    final boolean createLayersIfNonExistent) {
139:                Envelope datasetEnvelope = new Envelope();
140:                if (warpingPanel.currentSourceLayer() != null) {
141:                    datasetEnvelope = warpingPanel.currentSourceLayer()
142:                            .getFeatureCollectionWrapper().getEnvelope();
143:                }
144:                if (datasetEnvelope.isNull()) {
145:                    datasetEnvelope = envelopeOfTails(warpingVectorLayerFinder(
146:                            context).getVectors());
147:                }
148:                if (datasetEnvelope.isNull()) {
149:                    return UndoableCommand.DUMMY;
150:                }
151:                if (datasetEnvelope.getWidth() == 0) {
152:                    //Otherwise we could end up with zero-area quadrilaterals [Jon Aquino]
153:                    datasetEnvelope.expandToInclude(new Coordinate(
154:                            datasetEnvelope.getMinX() + 1, datasetEnvelope
155:                                    .getMinY()));
156:                    datasetEnvelope.expandToInclude(new Coordinate(
157:                            datasetEnvelope.getMinX() - 1, datasetEnvelope
158:                                    .getMinY()));
159:                }
160:                if (datasetEnvelope.getHeight() == 0) {
161:                    datasetEnvelope.expandToInclude(new Coordinate(
162:                            datasetEnvelope.getMinX(), datasetEnvelope
163:                                    .getMinY() + 1));
164:                    datasetEnvelope.expandToInclude(new Coordinate(
165:                            datasetEnvelope.getMinX(), datasetEnvelope
166:                                    .getMinY() - 1));
167:                }
168:                Map triangleMap = triangulator.triangleMap(datasetEnvelope,
169:                        warpingVectorLayerFinder(context).getVectors(),
170:                        new DummyTaskMonitor());
171:                List[] sourceAndDestinationTriangles = CollectionUtil
172:                        .keysAndCorrespondingValues(triangleMap);
173:                final FeatureCollection sourceFeatureCollection = toFeatureCollection(sourceAndDestinationTriangles[0]);
174:                final FeatureCollection destinationFeatureCollection = toFeatureCollection(sourceAndDestinationTriangles[1]);
175:                return addUndo(new UndoableCommand(getName()) {
176:                    public void execute() {
177:                        if (sourceLayer(context) != null) {
178:                            sourceLayer(context).setFeatureCollection(
179:                                    sourceFeatureCollection);
180:                            sourceLayer(context).setVisible(true);
181:                        }
182:                        if (sourceLayer(context) == null
183:                                && createLayersIfNonExistent) {
184:                            Layer sourceLayer = context.getLayerManager()
185:                                    .addLayer(StandardCategoryNames.WORKING,
186:                                            SOURCE_LAYER_NAME,
187:                                            sourceFeatureCollection);
188:                            init(sourceLayer, Color.gray, 150, 1);
189:                        }
190:                        if (destinationLayer(context) != null) {
191:                            destinationLayer(context).setFeatureCollection(
192:                                    destinationFeatureCollection);
193:                            destinationLayer(context).setVisible(true);
194:                        }
195:                        if (destinationLayer(context) == null
196:                                && createLayersIfNonExistent) {
197:                            Layer destinationLayer = context.getLayerManager()
198:                                    .addLayer(StandardCategoryNames.WORKING,
199:                                            DESTINATION_LAYER_NAME,
200:                                            destinationFeatureCollection);
201:                            init(destinationLayer, GOLD, 255, 1);
202:                        }
203:                    }
204:
205:                    public void unexecute() {
206:                        //Undo is handled by #addUndo. [Jon Aquino]
207:                    }
208:                }, context);
209:            }
210:
211:            public UndoableCommand addLayerGeneration(
212:                    final UndoableCommand wrappeeCommand,
213:                    final WorkbenchContext context,
214:                    final boolean createLayersIfNonExistent) {
215:                return new UndoableCommand(wrappeeCommand.getName()) {
216:                    private UndoableCommand layerGenerationCommand = null;
217:
218:                    private UndoableCommand layerGenerationCommand() {
219:                        if (layerGenerationCommand == null) {
220:                            layerGenerationCommand = createCommand(context,
221:                                    createLayersIfNonExistent);
222:                        }
223:                        return layerGenerationCommand;
224:                    }
225:
226:                    public void execute() {
227:                        wrappeeCommand.execute();
228:                        layerGenerationCommand().execute();
229:                    }
230:
231:                    public void unexecute() {
232:                        layerGenerationCommand().unexecute();
233:                        wrappeeCommand.unexecute();
234:                    }
235:                };
236:            }
237:
238:            public static UndoableCommand addUndo(
239:                    final UndoableCommand wrappeeCommand,
240:                    final LayerManagerProxy proxy) {
241:                return Layer.addUndo(DESTINATION_LAYER_NAME, proxy, Layer
242:                        .addUndo(SOURCE_LAYER_NAME, proxy, wrappeeCommand));
243:            }
244:
245:            private final static String WARP_ID_NAME = "WARP_ID";
246:
247:            private FeatureCollection toFeatureCollection(Collection triangles) {
248:                FeatureSchema featureSchema = new FeatureSchema();
249:                featureSchema.addAttribute("GEOMETRY", AttributeType.GEOMETRY);
250:                featureSchema.addAttribute(WARP_ID_NAME, AttributeType.INTEGER);
251:
252:                FeatureCollection featureCollection = new FeatureDataset(
253:                        featureSchema);
254:
255:                int j = 0;
256:                for (Iterator i = triangles.iterator(); i.hasNext();) {
257:                    Triangle t = (Triangle) i.next();
258:                    j++;
259:                    Feature feature = new BasicFeature(featureSchema);
260:                    feature.setGeometry(factory.createPolygon(t.toLinearRing(),
261:                            null));
262:                    feature.setAttribute(WARP_ID_NAME, new Integer(j));
263:                    featureCollection.add(feature);
264:                }
265:
266:                return featureCollection;
267:            }
268:
269:            private GeometryFactory factory = new GeometryFactory();
270:
271:            private void init(Layer layer, Color color, int alpha, int lineWidth) {
272:                boolean firingEvents = layer.getLayerManager().isFiringEvents();
273:                layer.getLayerManager().setFiringEvents(false);
274:                try {
275:                    layer.getBasicStyle().setLineColor(color);
276:                    layer.getBasicStyle().setFillColor(color);
277:                    layer.getBasicStyle().setAlpha(alpha);
278:                    layer.getBasicStyle().setLineWidth(lineWidth);
279:                    layer.getBasicStyle().setRenderingFill(false);
280:                    layer.getVertexStyle().setEnabled(true);
281:                    layer.getVertexStyle().setSize(4);
282:                    layer.getLabelStyle().setEnabled(true);
283:                    layer.getLabelStyle().setColor(color);
284:                    layer.getLabelStyle().setFont(
285:                            new Font("Dialog", Font.PLAIN, 12));
286:                    layer.getLabelStyle().setAttribute(WARP_ID_NAME);
287:                    layer.getLabelStyle().setHeight(12);
288:                    layer.getLabelStyle().setScaling(false);
289:                    layer.getLabelStyle().setHidingOverlappingLabels(false);
290:                } finally {
291:                    layer.getLayerManager().setFiringEvents(firingEvents);
292:                }
293:                layer.fireAppearanceChanged();
294:            }
295:
296:            public Icon getIcon() {
297:                return IconLoader.icon("Triangle.gif");
298:            }
299:        }
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