1.13 polygonizer is crashing when I call getPolygons. I am dealing with a very complex shape, with a lot of internal polygons and other pecularities. The input line lines are a projection of a 3D mesh with lots of overlaps. Since coords are in meters I have rounded them to nearest meter on entry. I have gone to bit of effort cleaning up all input linestring to remove self-intersection and "polygons" that are straight lines (zero area). (union with a point on the line, put into polygonizer, extract back polygons). All inputs validate.
However, I am still getting polygonizer crash: In log: > java.lang.NullPointerException > at > com.vividsolutions.jts.geom.util.LinearComponentExtracter.getLines(LinearComponentExtracter.java:146) > at > com.vividsolutions.jts.geom.util.LinearComponentExtracter.getLines(LinearComponentExtracter.java:130) > at nz.cri.gns.tsurfist.tsurface.assembleEdges(tsurface.java:1171) > in Test output > java.lang.NullPointerException > at > com.vividsolutions.jts.algorithm.RayCrossingCounter.countSegment(RayCrossingCounter.java:134) > at > com.vividsolutions.jts.algorithm.RayCrossingCounter.locatePointInRing(RayCrossingCounter.java:80) > at > com.vividsolutions.jts.algorithm.CGAlgorithms.locatePointInRing(CGAlgorithms.java:167) > at > com.vividsolutions.jts.algorithm.CGAlgorithms.isPointInRing(CGAlgorithms.java:148) > at > com.vividsolutions.jts.operation.polygonize.EdgeRing.findEdgeRingContaining(EdgeRing.java:85) > at > com.vividsolutions.jts.operation.polygonize.Polygonizer.assignHoleToShell(Polygonizer.java:242) > at > com.vividsolutions.jts.operation.polygonize.Polygonizer.assignHolesToShells(Polygonizer.java:236) > at > com.vividsolutions.jts.operation.polygonize.Polygonizer.polygonize(Polygonizer.java:198) > at > com.vividsolutions.jts.operation.polygonize.Polygonizer.getPolygons(Polygonizer.java:143) > at nz.cri.gns.tsurfist.tsurface.assembleEdges(tsurface.java:1191) > at nz.cri.gns.tsurfist.tsurface.loadFromFile(tsurface.java:1317) > at nz.cri.gns.tsurfist.ProcessCmdLine.main(ProcessCmdLine.java:48) > at > nz.cri.gns.tsurfist.ProcessCmdLineTest.testMain(ProcessCmdLineTest.java:48) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:498) > at > org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45) > at > org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) > at > org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42) > at > org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20) > at > org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28) > at > org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:30) > at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263) > at > org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68) > at > org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47) > at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231) > at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60) > at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229) > at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50) > at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222) > at > org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28) > at > org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:30) > at org.junit.runners.ParentRunner.run(ParentRunner.java:300) > at > org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:53) > at > org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:123) > at > org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:104) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:498) > at > org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:164) > at > org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:110) > at > org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:175) > at > org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcessWhenForked(SurefireStarter.java:107) > at > org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:68) A file with the offending validated rings can be found at: https://drive.google.com/file/d/0B3lye8EN1ELEUVphVi1HNkl2VWs/view?usp=sharing Removing certain (rather spiky) rings does allow the polygoniser to work, but doesnt give me a way to fix problems in advance. 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