svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.geometry / org.gvsig.fmap.geometry.operation / src / main / java / org / gvsig / fmap / geom / operation / tojts / Surface2DToJTS.java @ 40767
History | View | Annotate | Download (9.35 KB)
| 1 |
/**
|
|---|---|
| 2 |
* gvSIG. Desktop Geographic Information System.
|
| 3 |
*
|
| 4 |
* Copyright (C) 2007-2013 gvSIG Association.
|
| 5 |
*
|
| 6 |
* This program is free software; you can redistribute it and/or
|
| 7 |
* modify it under the terms of the GNU General Public License
|
| 8 |
* as published by the Free Software Foundation; either version 3
|
| 9 |
* of the License, or (at your option) any later version.
|
| 10 |
*
|
| 11 |
* This program is distributed in the hope that it will be useful,
|
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 14 |
* GNU General Public License for more details.
|
| 15 |
*
|
| 16 |
* You should have received a copy of the GNU General Public License
|
| 17 |
* along with this program; if not, write to the Free Software
|
| 18 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
| 19 |
* MA 02110-1301, USA.
|
| 20 |
*
|
| 21 |
* For any additional information, do not hesitate to contact us
|
| 22 |
* at info AT gvsig.com, or visit our website www.gvsig.com.
|
| 23 |
*/
|
| 24 |
|
| 25 |
package org.gvsig.fmap.geom.operation.tojts; |
| 26 |
|
| 27 |
import java.awt.geom.PathIterator; |
| 28 |
import java.util.ArrayList; |
| 29 |
|
| 30 |
import org.gvsig.fmap.geom.Geometry; |
| 31 |
import org.gvsig.fmap.geom.operation.GeometryOperationContext; |
| 32 |
import org.gvsig.fmap.geom.operation.GeometryOperationException; |
| 33 |
|
| 34 |
import com.vividsolutions.jts.algorithm.CGAlgorithms; |
| 35 |
import com.vividsolutions.jts.geom.Coordinate; |
| 36 |
import com.vividsolutions.jts.geom.CoordinateArrays; |
| 37 |
import com.vividsolutions.jts.geom.Envelope; |
| 38 |
import com.vividsolutions.jts.geom.LineString; |
| 39 |
import com.vividsolutions.jts.geom.LinearRing; |
| 40 |
import com.vividsolutions.jts.geom.Polygon; |
| 41 |
|
| 42 |
/**
|
| 43 |
* @author <a href="mailto:jpiera@gvsig.org">Jorge Piera</a>
|
| 44 |
*/
|
| 45 |
public class Surface2DToJTS extends ToJTS{ |
| 46 |
/*
|
| 47 |
* (non-Javadoc)
|
| 48 |
* @see org.gvsig.fmap.geom.operation.tojts.ToJTS#invoke(org.gvsig.fmap.geom.Geometry, org.gvsig.fmap.geom.operation.GeometryOperationContext)
|
| 49 |
*/
|
| 50 |
public Object invoke(Geometry geom, GeometryOperationContext ctx) throws GeometryOperationException { |
| 51 |
int srid = -1; |
| 52 |
if (ctx != null){ |
| 53 |
srid = ((JTSGeometryOperationContext)ctx).getSrid(); |
| 54 |
} |
| 55 |
ArrayList arrayLines = new ArrayList(); |
| 56 |
PathIterator theIterator = geom.getPathIterator(null, geomManager.getFlatness()); |
| 57 |
int theType;
|
| 58 |
double[] theData = new double[6]; |
| 59 |
ArrayList arrayCoords = null; |
| 60 |
LineString lin; |
| 61 |
int numParts = 0; |
| 62 |
Coordinate coord; |
| 63 |
|
| 64 |
ArrayList shells = new ArrayList(); |
| 65 |
ArrayList holes = new ArrayList(); |
| 66 |
Coordinate[] points = null; |
| 67 |
|
| 68 |
while (!theIterator.isDone()) {
|
| 69 |
//while not done
|
| 70 |
theType = theIterator.currentSegment(theData); |
| 71 |
|
| 72 |
//Populate a segment of the new
|
| 73 |
// GeneralPathX object.
|
| 74 |
//Process the current segment to populate a new
|
| 75 |
// segment of the new GeneralPathX object.
|
| 76 |
switch (theType) {
|
| 77 |
case PathIterator.SEG_MOVETO: |
| 78 |
|
| 79 |
// System.out.println("SEG_MOVETO");
|
| 80 |
if (arrayCoords == null) { |
| 81 |
arrayCoords = new ArrayList(); |
| 82 |
} else {
|
| 83 |
points = CoordinateArrays.toCoordinateArray(arrayCoords); |
| 84 |
|
| 85 |
try {
|
| 86 |
LinearRing ring = geomFactory.createLinearRing(points); |
| 87 |
|
| 88 |
if (CGAlgorithms.isCCW(points)) {
|
| 89 |
holes.add(ring); |
| 90 |
} else {
|
| 91 |
shells.add(ring); |
| 92 |
} |
| 93 |
} catch (Exception e) { |
| 94 |
/* (jaume) caso cuando todos los puntos son iguales
|
| 95 |
* devuelvo el propio punto
|
| 96 |
*/
|
| 97 |
boolean same = true; |
| 98 |
for (int i = 0; i < points.length-1 && same; i++) { |
| 99 |
if (points[i].x != points[i+1].x || |
| 100 |
points[i].y != points[i+1].y /*|| |
| 101 |
points[i].z != points[i+1].z*/
|
| 102 |
) {
|
| 103 |
same = false;
|
| 104 |
} |
| 105 |
} |
| 106 |
if (same) {
|
| 107 |
return geomFactory.createPoint(points[0]); |
| 108 |
} |
| 109 |
/*
|
| 110 |
* caso cuando es una l�nea de 3 puntos, no creo un LinearRing, sino
|
| 111 |
* una linea
|
| 112 |
*/
|
| 113 |
if (points.length>1 && points.length<=3) { |
| 114 |
// return geomFactory.createLineString(points);
|
| 115 |
return geomFactory.createMultiLineString(new LineString[] {geomFactory.createLineString(points)}); |
| 116 |
} |
| 117 |
|
| 118 |
System.err.println(
|
| 119 |
"Caught Topology exception in GMLLinearRingHandler");
|
| 120 |
|
| 121 |
return null; |
| 122 |
} |
| 123 |
|
| 124 |
/* if (numParts == 1)
|
| 125 |
{
|
| 126 |
linRingExt = new GeometryFactory().createLinearRing(
|
| 127 |
CoordinateArrays.toCoordinateArray(arrayCoords));
|
| 128 |
}
|
| 129 |
else
|
| 130 |
{
|
| 131 |
linRing = new GeometryFactory().createLinearRing(
|
| 132 |
CoordinateArrays.toCoordinateArray(arrayCoords));
|
| 133 |
arrayLines.add(linRing);
|
| 134 |
} */
|
| 135 |
arrayCoords = new ArrayList(); |
| 136 |
} |
| 137 |
|
| 138 |
numParts++; |
| 139 |
arrayCoords.add(new Coordinate(theData[0], |
| 140 |
theData[1]));
|
| 141 |
|
| 142 |
break;
|
| 143 |
|
| 144 |
case PathIterator.SEG_LINETO: |
| 145 |
|
| 146 |
// System.out.println("SEG_LINETO");
|
| 147 |
arrayCoords.add(new Coordinate(theData[0], |
| 148 |
theData[1]));
|
| 149 |
|
| 150 |
break;
|
| 151 |
|
| 152 |
case PathIterator.SEG_QUADTO: |
| 153 |
System.out.println("SEG_QUADTO Not supported here"); |
| 154 |
|
| 155 |
break;
|
| 156 |
|
| 157 |
case PathIterator.SEG_CUBICTO: |
| 158 |
System.out.println("SEG_CUBICTO Not supported here"); |
| 159 |
|
| 160 |
break;
|
| 161 |
|
| 162 |
case PathIterator.SEG_CLOSE: |
| 163 |
|
| 164 |
// A�adimos el primer punto para cerrar.
|
| 165 |
Coordinate firstCoord = (Coordinate) arrayCoords.get(0);
|
| 166 |
arrayCoords.add(new Coordinate(firstCoord.x,
|
| 167 |
firstCoord.y)); |
| 168 |
|
| 169 |
break;
|
| 170 |
} //end switch
|
| 171 |
|
| 172 |
// System.out.println("theData[0] = " + theData[0] + " theData[1]=" + theData[1]);
|
| 173 |
theIterator.next(); |
| 174 |
} //end while loop
|
| 175 |
|
| 176 |
|
| 177 |
Coordinate firstCoord = (Coordinate) arrayCoords.get(0);
|
| 178 |
Coordinate lastCoord = (Coordinate) arrayCoords.get(arrayCoords |
| 179 |
.size() - 1);
|
| 180 |
if (!isClosed(firstCoord, lastCoord)) {
|
| 181 |
arrayCoords.add(firstCoord); |
| 182 |
} |
| 183 |
points = CoordinateArrays.toCoordinateArray(arrayCoords); |
| 184 |
|
| 185 |
try {
|
| 186 |
LinearRing ring = geomFactory.createLinearRing(points); |
| 187 |
|
| 188 |
if (CGAlgorithms.isCCW(points)) {
|
| 189 |
holes.add(ring); |
| 190 |
} else {
|
| 191 |
shells.add(ring); |
| 192 |
} |
| 193 |
ring.setSRID(srid); |
| 194 |
} catch (Exception e) { |
| 195 |
/* (jaume) caso cuando todos los puntos son iguales
|
| 196 |
* devuelvo el propio punto
|
| 197 |
*/
|
| 198 |
boolean same = true; |
| 199 |
for (int i = 0; i < points.length-1 && same; i++) { |
| 200 |
if (points[i].x != points[i+1].x || |
| 201 |
points[i].y != points[i+1].y /*|| |
| 202 |
points[i].z != points[i+1].z*/
|
| 203 |
) {
|
| 204 |
same = false;
|
| 205 |
} |
| 206 |
} |
| 207 |
if (same) {
|
| 208 |
com.vividsolutions.jts.geom.Geometry geoJTS = geomFactory.createPoint(points[0]);
|
| 209 |
geoJTS.setSRID(srid); |
| 210 |
return geoJTS;
|
| 211 |
} |
| 212 |
/*
|
| 213 |
* caso cuando es una l�nea de 3 puntos, no creo un LinearRing, sino
|
| 214 |
* una linea
|
| 215 |
*/
|
| 216 |
if (points.length>1 && points.length<=3) { |
| 217 |
// return geomFactory.createLineString(points);
|
| 218 |
com.vividsolutions.jts.geom.Geometry geoJTS = geomFactory |
| 219 |
.createMultiLineString(new LineString[] { geomFactory |
| 220 |
.createLineString(points) }); |
| 221 |
geoJTS.setSRID(srid); |
| 222 |
return geoJTS;
|
| 223 |
} |
| 224 |
System.err.println(
|
| 225 |
"Caught Topology exception in GMLLinearRingHandler");
|
| 226 |
|
| 227 |
return null; |
| 228 |
} |
| 229 |
|
| 230 |
/* linRing = new GeometryFactory().createLinearRing(
|
| 231 |
CoordinateArrays.toCoordinateArray(arrayCoords)); */
|
| 232 |
|
| 233 |
// System.out.println("NumParts = " + numParts);
|
| 234 |
//now we have a list of all shells and all holes
|
| 235 |
ArrayList holesForShells = new ArrayList(shells.size()); |
| 236 |
|
| 237 |
for (int i = 0; i < shells.size(); i++) { |
| 238 |
holesForShells.add(new ArrayList()); |
| 239 |
} |
| 240 |
|
| 241 |
//find homes
|
| 242 |
for (int i = 0; i < holes.size(); i++) { |
| 243 |
LinearRing testRing = (LinearRing) holes.get(i); |
| 244 |
LinearRing minShell = null;
|
| 245 |
Envelope minEnv = null;
|
| 246 |
Envelope testEnv = testRing.getEnvelopeInternal(); |
| 247 |
Coordinate testPt = testRing.getCoordinateN(0);
|
| 248 |
LinearRing tryRing = null;
|
| 249 |
|
| 250 |
for (int j = 0; j < shells.size(); j++) { |
| 251 |
tryRing = (LinearRing) shells.get(j); |
| 252 |
|
| 253 |
Envelope tryEnv = tryRing.getEnvelopeInternal(); |
| 254 |
|
| 255 |
if (minShell != null) { |
| 256 |
minEnv = minShell.getEnvelopeInternal(); |
| 257 |
} |
| 258 |
|
| 259 |
boolean isContained = false; |
| 260 |
Coordinate[] coordList = tryRing.getCoordinates();
|
| 261 |
|
| 262 |
if (tryEnv.contains(testEnv) &&
|
| 263 |
(CGAlgorithms.isPointInRing(testPt, coordList) || |
| 264 |
(pointInList(testPt, coordList)))) {
|
| 265 |
isContained = true;
|
| 266 |
} |
| 267 |
|
| 268 |
// check if this new containing ring is smaller than the current minimum ring
|
| 269 |
if (isContained) {
|
| 270 |
if ((minShell == null) || minEnv.contains(tryEnv)) { |
| 271 |
minShell = tryRing; |
| 272 |
} |
| 273 |
} |
| 274 |
} |
| 275 |
|
| 276 |
if (minShell == null) { |
| 277 |
// System.out.println(
|
| 278 |
// "polygon found with a hole thats not inside a shell");
|
| 279 |
// azabala: we do the assumption that this hole is really a shell (polygon)
|
| 280 |
// whose point werent digitized in the right order
|
| 281 |
Coordinate[] cs = testRing.getCoordinates();
|
| 282 |
Coordinate[] reversed = new Coordinate[cs.length]; |
| 283 |
int pointIndex = 0; |
| 284 |
for(int z = cs.length-1; z >= 0; z--){ |
| 285 |
reversed[pointIndex] = cs[z]; |
| 286 |
pointIndex++; |
| 287 |
} |
| 288 |
LinearRing newRing = geomFactory.createLinearRing(reversed); |
| 289 |
shells.add(newRing); |
| 290 |
holesForShells.add(new ArrayList()); |
| 291 |
} else {
|
| 292 |
((ArrayList) holesForShells.get(shells.indexOf(minShell))).add(testRing);
|
| 293 |
} |
| 294 |
} |
| 295 |
|
| 296 |
Polygon[] polygons = new Polygon[shells.size()]; |
| 297 |
|
| 298 |
for (int i = 0; i < shells.size(); i++) { |
| 299 |
polygons[i] = geomFactory.createPolygon((LinearRing) shells.get( |
| 300 |
i), |
| 301 |
(LinearRing[]) ((ArrayList) holesForShells.get(i)).toArray( |
| 302 |
new LinearRing[0])); |
| 303 |
polygons[i].setSRID(srid); |
| 304 |
} |
| 305 |
|
| 306 |
holesForShells = null;
|
| 307 |
shells = null;
|
| 308 |
holes = null;
|
| 309 |
|
| 310 |
//com.vividsolutions.jts.geom.Geometry geoJTS = geomFactory.createMultiPolygon(polygons);
|
| 311 |
polygons[0].setSRID(srid);
|
| 312 |
|
| 313 |
com.vividsolutions.jts.geom.Geometry geoJTS; |
| 314 |
if (polygons.length == 1) { |
| 315 |
geoJTS = polygons[0];
|
| 316 |
} else {
|
| 317 |
// its a multi part
|
| 318 |
geoJTS = geomFactory.createMultiPolygon(polygons); |
| 319 |
} |
| 320 |
geoJTS.setSRID(srid); |
| 321 |
return geoJTS;
|
| 322 |
} |
| 323 |
} |