Triangulate 2D surface node

Subset of points to use for triangulation.

Improves the quality of the triangulation by adding new points. The triangulation will include some new points beyond the ones in the input, but the triangles will have better shapes. Specifically, this guarantees the output triangles respect the Maximum Area and Minimum Angle parameters.

If you start with the following points:

With Refine off, Triangulate 2D will create triangles using the available points, and may in the process introduce undesirable long skinny triangles:

With Refine on, Triangulate 2D will add points to create better triangles conforming to the Maximum Area and Minimum Angle parameters.

The maximum area for the interior of each triangle. Decrease this value to get smaller and more similarly sized triangles. Very small values can make the triangulation take a long time.

The minimum angle, in degrees, for the interior of each triangle. Increasing this value to get more symmetrical triangles and eliminate long skinny triangles. Values larger than 30 degrees may prevent the triangulation from working.

Enter the primitive numbers of primitives that should be preserved in the output triangulation.

If one of the primitives is closed, you can turn on Remove edges outside constraints to trim away edges outside the constraint primitives.

Turn on No new points on constraints to prevent Triangulate 2D from inserting new points on the edges of constraint primitives as it triangulates.

Remove edges outside the constraint primitives after triangulation is completed. This is useful if you just want to triangulate the interior of the constraint.

When this option is off, Triangulate 2D may satisfy some constraints by adding new points on constraint edges. This gives better triangulation, but you may not want to change the topology of the constraint primitives.

Turn this option on to prevent Triangulate 2D from adding points to the constraint primitives.

Create a point group containing any points Triangulate 2D created on the constrained edges.

When Create Group for New Constraint Points is on, Triangulate 2D creates a group with this name to contain points created on the constrained edges.

Limits the number of new points that can be added during triangulation. New points might be added to satisfy constraints or during refinement, up to this limit. This is mostly useful to ensure that the triangulation doesn’t run forever, and should usually be set to a value much larger than the number of points you expect to generate.

Keep all input primitives (except the constraint primitives) in the output in addition to new primitives created during triangulation.

When this option is off, the input primitives do not appear in the output.

Recomputes point normals (if they exist).