Revision 42441 trunk/org.gvsig.desktop/org.gvsig.desktop.compat.cdc/org.gvsig.fmap.geometry/org.gvsig.fmap.geometry.jts/src/main/java/org/gvsig/fmap/geom/jts/util/JTSUtils.java
| JTSUtils.java | ||
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*/ |
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package org.gvsig.fmap.geom.jts.util; |
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import java.util.ArrayList; |
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import java.util.List; |
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import com.vividsolutions.jts.geom.Coordinate; |
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import com.vividsolutions.jts.geom.MultiPoint; |
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import com.vividsolutions.jts.geom.MultiPolygon; |
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import com.vividsolutions.jts.geom.Triangle; |
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import com.vividsolutions.jts.operation.buffer.BufferParameters; |
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import com.vividsolutions.jts.operation.buffer.OffsetCurveBuilder; |
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import com.vividsolutions.jts.util.GeometricShapeFactory; |
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import org.hibernate.spatial.jts.mgeom.MCoordinateSequence; |
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import org.hibernate.spatial.jts.mgeom.MGeometryFactory; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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|
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return null; |
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} |
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private static com.vividsolutions.jts.geom.GeometryFactory getFactory(CoordinateSequence coordinates){
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public static com.vividsolutions.jts.geom.GeometryFactory getFactory(CoordinateSequence coordinates){
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com.vividsolutions.jts.geom.GeometryFactory factory = JTSUtils.factory; |
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if(coordinates.size()>0 && coordinates.getCoordinate(0) instanceof org.hibernate.spatial.jts.mgeom.MCoordinate){
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factory = mfactory; |
| ... | ... | |
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} |
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} |
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if (jtsGeom instanceof com.vividsolutions.jts.geom.Polygon) {
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if (jtsGeom instanceof com.vividsolutions.jts.geom.Polygon && !jtsGeom.isEmpty()) {
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Polygon polygon; |
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com.vividsolutions.jts.geom.Polygon polygonJTS = (com.vividsolutions.jts.geom.Polygon)jtsGeom; |
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Coordinate[] coordinates = polygonJTS.getExteriorRing().getCoordinates(); |
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return getFactory(coordinates).createPolygon(coordinates); |
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} |
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public static BufferParameters getBufferParameters(){
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BufferParameters bufParams = new BufferParameters(); |
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bufParams.setSingleSided(true); |
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bufParams.setEndCapStyle(BufferParameters.CAP_FLAT); |
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bufParams.setJoinStyle(BufferParameters.CAP_ROUND); |
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return bufParams; |
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} |
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/** |
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* Creates a offset from a closed line at a distance |
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* |
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* @param distance |
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* @return |
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*/ |
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public static Geometry offsetClosedLine(ArrayListCoordinateSequence coordinates, double distance) {
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com.vividsolutions.jts.geom.Geometry jtsGeom = JTSUtils.createJTSPolygon(coordinates); |
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com.vividsolutions.jts.geom.Geometry geomJTS = jtsGeom.buffer(distance); |
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if (geomJTS instanceof com.vividsolutions.jts.geom.Polygon) {
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com.vividsolutions.jts.geom.Polygon polygonJTS = (com.vividsolutions.jts.geom.Polygon) geomJTS; |
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LineString shell = polygonJTS.getExteriorRing(); |
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int numHoles = polygonJTS.getNumInteriorRing(); |
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if (numHoles > 0) {
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LineString[] lineStrings = new LineString[numHoles + 1]; |
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lineStrings[0] = shell; |
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for (int i = 0; i < numHoles; i++) {
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LineString hole = polygonJTS.getInteriorRingN(i); |
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lineStrings[i + 1] = hole; |
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} |
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return JTSUtils.createGeometry(JTSUtils.createJTSMultiLineString(lineStrings)); |
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} |
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return JTSUtils.createGeometry(shell); |
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} else if (geomJTS instanceof com.vividsolutions.jts.geom.MultiPolygon) {
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MultiPolygon multiPolygonJTS = (com.vividsolutions.jts.geom.MultiPolygon) geomJTS; |
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List<LineString> lineStringList = new ArrayList<LineString>(); |
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for (int i = 0; i < multiPolygonJTS.getNumGeometries(); i++) {
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com.vividsolutions.jts.geom.Polygon polygonJTS = |
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(com.vividsolutions.jts.geom.Polygon) multiPolygonJTS.getGeometryN(i); |
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lineStringList.add(polygonJTS.getExteriorRing()); |
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int numHoles = polygonJTS.getNumInteriorRing(); |
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if (numHoles > 0) {
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for (int h = 0; h < numHoles; h++) {
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LineString hole = polygonJTS.getInteriorRingN(i); |
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lineStringList.add(hole); |
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} |
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} |
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} |
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return JTSUtils.createGeometry(JTSUtils.createJTSMultiLineString(lineStringList.toArray(new LineString[lineStringList.size()]))); |
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} |
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//No deber?a pasar por aqu? |
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logger.warn("offsetClosedLine does not return or Polygon JTS or MultiPolygon JTS");
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return null; |
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} |
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/** |
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* Creates a raw offset of a open line at a distance. |
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* |
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* @param coordinates |
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* @param distance |
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* @return |
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*/ |
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public static Geometry offsetRawOpenLine(ArrayListCoordinateSequence coordinates, double distance) {
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com.vividsolutions.jts.geom.GeometryFactory factory = getFactory(coordinates); |
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BufferParameters bufParams = JTSUtils.getBufferParameters(); |
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LineString jtsGeom = JTSUtils.createJTSLineString(coordinates); |
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OffsetCurveBuilder ocb = new |
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OffsetCurveBuilder(factory.getPrecisionModel(), bufParams); |
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Coordinate[] coords = ocb.getOffsetCurve(jtsGeom.getCoordinates(), distance); |
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CoordinateSequence coordSequence = factory.getCoordinateSequenceFactory().create(coords); |
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com.vividsolutions.jts.geom.Geometry offsetGeom = JTSUtils.createJTSLineString(coordSequence); |
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return JTSUtils.createGeometry(offsetGeom); |
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} |
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/* |
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* |
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*/ |
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public static double straightLineThroughTwoPointsEquation(double x1, double x2, double y1, double y2, double x) {
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if (x2 - x1 == 0.0) {
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return Double.POSITIVE_INFINITY; |
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} |
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return ((y2 - y1) * (x - x1) / (x2 - x1)) + y1; |
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} |
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} |
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