Limiting Delaunay mesh: faces between different contours only

[jdelavaulx]

I think that this has been identified previously:

Terrain mesh inaccuracies... 'Minimize Flat Areas' equivalent?

Hi there, Using contours as the input, I have been experimenting with various ways to generate accurate terrain meshes using Rhino, Grasshopper, and also plugins such as Lands Design. All of the methods I have tested generate a common inaccuracy. Essentially, it seems most methods use the Delaunay triangulation or similar, which often ends up creating triangular faces between 3 vertices on the same contour line rather than between two contour lines which results in flat faces that should actua…