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package org.locationtech.jts.geomgraph; |
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import java.util.ArrayList; |
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import java.util.Collection; |
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import java.util.Iterator; |
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import org.locationtech.jts.geom.TopologyException; |
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import org.locationtech.jts.noding.BasicSegmentString; |
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import org.locationtech.jts.noding.FastNodingValidator; |
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/** |
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* Validates that a collection of {@link Edge}s is correctly noded. |
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* Throws an appropriate exception if an noding error is found. |
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* Uses {@link FastNodingValidator} to perform the validation. |
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* |
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* @version 1.7 |
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* |
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* @see FastNodingValidator |
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*/ |
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public class EdgeNodingValidator |
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{ |
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/** |
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* Checks whether the supplied {@link Edge}s |
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* are correctly noded. |
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* Throws a {@link TopologyException} if they are not. |
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* |
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* @param edges a collection of Edges. |
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* @throws TopologyException if the SegmentStrings are not correctly noded |
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* |
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*/ |
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public static void checkValid(Collection edges) |
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{ |
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EdgeNodingValidator validator = new EdgeNodingValidator(edges); |
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validator.checkValid(); |
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} |
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public static Collection toSegmentStrings(Collection edges) |
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{ |
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Collection segStrings = new ArrayList(); |
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for (Iterator i = edges.iterator(); i.hasNext(); ) { |
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Edge e = (Edge) i.next(); |
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segStrings.add(new BasicSegmentString(e.getCoordinates(), e)); |
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} |
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return segStrings; |
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} |
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private FastNodingValidator nv; |
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/** |
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* Creates a new validator for the given collection of {@link Edge}s. |
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* |
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* @param edges a collection of Edges. |
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*/ |
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public EdgeNodingValidator(Collection edges) |
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{ |
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nv = new FastNodingValidator(toSegmentStrings(edges)); |
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} |
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/** |
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* Checks whether the supplied edges |
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* are correctly noded. Throws an exception if they are not. |
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* |
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* @throws TopologyException if the SegmentStrings are not correctly noded |
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* |
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*/ |
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public void checkValid() |
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{ |
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nv.checkValid(); |
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} |
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} |
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