Ok, mystery solved, I think. The constraints need to be segment-unique - in
other words, there cannot be any duplicate segments in the set of
constraint edges. So you will have to run a dissolve on your input
constraints. The LineDissolver class will do this.
When I do this I can use a tolerance of 0 and it completes.
I've updated the Javadoc to mention this requirement.
On Wed, Dec 4, 2013 at 10:31 AM, Brian Sanjeewa Rupasinghe <
[email protected]> wrote:
> Hi,
>
> I used the following method for the triangulation. I use polygons as
> constraints as well. Input Geometry is multipoint of all polygon vertices.
> Then polygons are used as constraints in a GeometryCollection. Was it
> because i used polygon geometry itself as constraints rather than its line
> segments?
>
> public static Geometry TriangulationBuilder (MultiPoint mp,
> ArrayList<Geometry> alg, double tolerance)
> {
> GeometryFactory gf = new GeometryFactory();
> ConformingDelaunayTriangulationBuilder cdtb = new
> ConformingDelaunayTriangulationBuilder();
> //constriant geometry
> Geometry consegs = gf.buildGeometry(alg);
> //GeometryCollection g_cp = (GeometryCollection)
> gf.createGeometryCollection(als);
> //set sites for triangulation
> cdtb.setSites(mp);
> //set constraints
> cdtb.setConstraints(consegs);
> //set tolerance -0.00001
> cdtb.setTolerance(tolerance);
> //Retrieving triangles
> Geometry Trigeom = cdtb.getTriangles(gf);
> return Trigeom;
> }
>
>
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