Revision 45762 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 | ||
|---|---|---|
| 46 | 46 |
import org.slf4j.LoggerFactory; |
| 47 | 47 |
|
| 48 | 48 |
import org.gvsig.fmap.geom.Geometry; |
| 49 |
import static org.gvsig.fmap.geom.Geometry.JOIN_STYLE_BEVEL; |
|
| 50 |
import static org.gvsig.fmap.geom.Geometry.JOIN_STYLE_MITRE; |
|
| 51 |
import static org.gvsig.fmap.geom.Geometry.JOIN_STYLE_ROUND; |
|
| 49 | 52 |
import org.gvsig.fmap.geom.GeometryException; |
| 50 | 53 |
import org.gvsig.fmap.geom.aggregate.MultiPrimitive; |
| 51 | 54 |
import org.gvsig.fmap.geom.exception.CreateGeometryException; |
| ... | ... | |
| 554 | 557 |
bufParams.setJoinStyle(BufferParameters.CAP_ROUND); |
| 555 | 558 |
return bufParams; |
| 556 | 559 |
} |
| 560 |
|
|
| 561 |
public static BufferParameters getBufferParameters(int joinStyle, int endCapStyle){
|
|
| 562 |
BufferParameters bufParams = new BufferParameters(); |
|
| 563 |
bufParams.setSingleSided(true); |
|
| 564 |
bufParams.setEndCapStyle(endCapStyle); |
|
| 565 |
bufParams.setJoinStyle(joinStyle); |
|
| 566 |
bufParams.setQuadrantSegments(calculateQuadrantSegments(joinStyle)); |
|
| 567 |
return bufParams; |
|
| 568 |
} |
|
| 569 |
|
|
| 570 |
public static int calculateQuadrantSegments(int joinStyle) throws IllegalArgumentException {
|
|
| 571 |
int quadrantSegments = BufferParameters.DEFAULT_QUADRANT_SEGMENTS; |
|
| 572 |
switch(joinStyle){
|
|
| 573 |
case JOIN_STYLE_ROUND: |
|
| 574 |
quadrantSegments = BufferParameters.DEFAULT_QUADRANT_SEGMENTS; |
|
| 575 |
break; |
|
| 576 |
case JOIN_STYLE_MITRE: |
|
| 577 |
quadrantSegments = - (int) BufferParameters.DEFAULT_MITRE_LIMIT; |
|
| 578 |
break; |
|
| 579 |
case JOIN_STYLE_BEVEL: |
|
| 580 |
quadrantSegments = 0; |
|
| 581 |
break; |
|
| 582 |
default: |
|
| 583 |
throw new IllegalArgumentException("Invalid jointStyle "+joinStyle);
|
|
| 584 |
} |
|
| 585 |
return quadrantSegments; |
|
| 586 |
} |
|
| 557 | 587 |
|
| 558 |
|
|
| 559 | 588 |
/** |
| 560 | 589 |
* Creates a offset from a closed line at a distance |
| 561 | 590 |
* |
| 591 |
* @param proj |
|
| 592 |
* @param coordinates |
|
| 562 | 593 |
* @param distance |
| 563 | 594 |
* @return |
| 564 | 595 |
*/ |
| 565 | 596 |
public static Geometry offsetClosedLine(IProjection proj, ArrayListCoordinateSequence coordinates, double distance) {
|
| 566 | 597 |
com.vividsolutions.jts.geom.Geometry jtsGeom = JTSUtils.createJTSPolygon(coordinates); |
| 567 | 598 |
com.vividsolutions.jts.geom.Geometry geomJTS = jtsGeom.buffer(distance); |
| 599 |
return jtsPolygonToJtsMultiLineString(geomJTS, proj); |
|
| 600 |
} |
|
| 601 |
|
|
| 602 |
/** |
|
| 603 |
* Creates a offset from a closed line at a distance |
|
| 604 |
* |
|
| 605 |
* @param proj |
|
| 606 |
* @param coordinates |
|
| 607 |
* @param joinStyle |
|
| 608 |
* @param distance |
|
| 609 |
* @return |
|
| 610 |
*/ |
|
| 611 |
public static Geometry offsetClosedLine(IProjection proj, ArrayListCoordinateSequence coordinates, int joinStyle, double distance) {
|
|
| 612 |
com.vividsolutions.jts.geom.Geometry jtsGeom = JTSUtils.createJTSPolygon(coordinates); |
|
| 613 |
com.vividsolutions.jts.geom.Geometry geomJTS = jtsGeom.buffer(distance, calculateQuadrantSegments(joinStyle), BufferParameters.CAP_FLAT); |
|
| 614 |
return jtsPolygonToJtsMultiLineString(geomJTS, proj); |
|
| 615 |
} |
|
| 616 |
|
|
| 617 |
protected static Geometry jtsPolygonToJtsMultiLineString(com.vividsolutions.jts.geom.Geometry geomJTS, IProjection proj) {
|
|
| 568 | 618 |
if (geomJTS instanceof com.vividsolutions.jts.geom.Polygon) {
|
| 569 | 619 |
com.vividsolutions.jts.geom.Polygon polygonJTS = (com.vividsolutions.jts.geom.Polygon) geomJTS; |
| 570 | 620 |
LineString shell = polygonJTS.getExteriorRing(); |
| ... | ... | |
| 581 | 631 |
return JTSUtils.createGeometry(proj, shell); |
| 582 | 632 |
} else if (geomJTS instanceof com.vividsolutions.jts.geom.MultiPolygon) {
|
| 583 | 633 |
MultiPolygon multiPolygonJTS = (com.vividsolutions.jts.geom.MultiPolygon) geomJTS; |
| 584 |
List<LineString> lineStringList = new ArrayList<LineString>();
|
|
| 634 |
List<LineString> lineStringList = new ArrayList<>(); |
|
| 585 | 635 |
for (int i = 0; i < multiPolygonJTS.getNumGeometries(); i++) {
|
| 586 | 636 |
com.vividsolutions.jts.geom.Polygon polygonJTS = |
| 587 |
(com.vividsolutions.jts.geom.Polygon) multiPolygonJTS.getGeometryN(i); |
|
| 637 |
(com.vividsolutions.jts.geom.Polygon) multiPolygonJTS.getGeometryN(i);
|
|
| 588 | 638 |
lineStringList.add(polygonJTS.getExteriorRing()); |
| 589 | 639 |
int numHoles = polygonJTS.getNumInteriorRing(); |
| 590 | 640 |
if (numHoles > 0) {
|
Also available in: Unified diff