Hi, I have a (hopefully) simple question regarding constructing a
PolyhedronsSet using the constructor PolyhedronsSet(List<Vector3D>
vertices, List<int[]> facets, double tolerance). Currently I have the
following code to construct a simple tetrahedron:
List<Vector3D> verts = Arrays.asList(new Vector3D(0, 0, 0), new Vector3D(0,
1, 1), new Vector3D(1, 1, 0), new Vector3D(1, 0, 1));
List<int[]> facets = Arrays.asList(new int[] {0, 3, 1}, new int[] {3, 2,
1}, new int[] {2, 1, 0}, new int[] {3, 2, 0});
PolyhedronsSet set = new PolyhedronsSet(verts, facets, 1e-10);
To the best of my knowledge, according to the documentation for this
constructor, the previous code should be right. However, it obviously
isn't. I'm getting the following error:
org.apache.commons.math3.exception.MathIllegalArgumentException: facets
orientation mismatch around edge joining points (0, 0, 0) and (1, 0, 1)
at
org.apache.commons.math3.geometry.euclidean.threed.PolyhedronsSet.successors(PolyhedronsSet.java:403)
at
org.apache.commons.math3.geometry.euclidean.threed.PolyhedronsSet.buildBoundary(PolyhedronsSet.java:274)
at
org.apache.commons.math3.geometry.euclidean.threed.PolyhedronsSet.<init>(PolyhedronsSet.java:131)
at ...
So, my question is, what am I doing wrong? If it's something more complex
than can easily be explained via email, feel free to link me to some
articles which might help. (Preferably articles which someone with very
limited experience with BSP trees and such could understand.)
Thanks for your time. -Steven
