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package org.locationtech.jts.operation.valid; |
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import org.locationtech.jts.geom.Coordinate; |
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import org.locationtech.jts.geom.Geometry; |
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import org.locationtech.jts.geom.GeometryCollection; |
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import org.locationtech.jts.geom.LineString; |
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import org.locationtech.jts.geom.MultiPoint; |
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import org.locationtech.jts.geom.Point; |
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import org.locationtech.jts.geom.Polygon; |
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/** |
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* Implements the appropriate checks for repeated points |
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* (consecutive identical coordinates) as defined in the |
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* JTS spec. |
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* |
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* @version 1.7 |
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*/ |
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public class RepeatedPointTester { |
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private Coordinate repeatedCoord; |
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public RepeatedPointTester() { |
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} |
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public Coordinate getCoordinate() { return repeatedCoord; } |
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public boolean hasRepeatedPoint(Geometry g) |
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{ |
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if (g.isEmpty()) return false; |
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if (g instanceof Point) return false; |
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else if (g instanceof MultiPoint) return false; |
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else if (g instanceof LineString) return hasRepeatedPoint(((LineString) g).getCoordinates()); |
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else if (g instanceof Polygon) return hasRepeatedPoint((Polygon) g); |
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else if (g instanceof GeometryCollection) return hasRepeatedPoint((GeometryCollection) g); |
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else throw new UnsupportedOperationException(g.getClass().getName()); |
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} |
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public boolean hasRepeatedPoint(Coordinate[] coord) |
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{ |
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for (int i = 1; i < coord.length; i++) { |
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if (coord[i - 1].equals(coord[i]) ) { |
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repeatedCoord = coord[i]; |
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return true; |
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} |
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} |
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return false; |
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} |
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private boolean hasRepeatedPoint(Polygon p) |
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{ |
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if (hasRepeatedPoint(p.getExteriorRing().getCoordinates())) return true; |
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for (int i = 0; i < p.getNumInteriorRing(); i++) { |
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if (hasRepeatedPoint(p.getInteriorRingN(i).getCoordinates())) return true; |
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} |
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return false; |
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} |
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private boolean hasRepeatedPoint(GeometryCollection gc) |
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{ |
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for (int i = 0; i < gc.getNumGeometries(); i++) { |
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Geometry g = gc.getGeometryN(i); |
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if (hasRepeatedPoint(g)) return true; |
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} |
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return false; |
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} |
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} |
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