Topography Terrain generation error

[wim (Wim Dekeyser)]

Hi Antonio -

@Antonio11

[…] what do you mean by moving the triangles

I didn’t say move, I said cull.

Searching this forum for “Cull Delaunay” shows, e.g., the following:

Topography from curves/points

My system crashes with your file, but a conventional and relatively fast method is to subdivide the contour curves and mesh the resulting points using Delaunay triangulation. Since your contours are actually polylines, you can get their vertices without “losing” any accuracy. You can also remesh the result to get a nicer looking/smoother mesh, but this does not add model accuracy (edit: one can also preserve features in this step e.g. points/curves, see last image). You can also trim/split/cull…

Delaunay Mesh - remove unwanted elements

One popular measure of triangle quality is the ratio of the radius of the incircle to that of the circumcircle. An advantage of this is that it is scale independent [image] triangle_quality_cull.gh (23.0 KB)

Delaunay mesh surface with oculus

I think the easiest way would be to use Cull Faces on the mesh. You can identify the faces to remove by projecting their centres and checking if they are less than a given distance from the centre, or if they are contained by the inner circle. [image] dome_oculus.gh (9.6 KB)

-wim