HiddenLine Drawing

[rajaa (Rajaa Issa)]

Hi @richard_schaffranek
Are you using clipping planes? Looks like intersection curves between the clipping planes and your geometry are being omitted. Check the sample I shared in this link, and let me know if you still have a problem:

Rhino Bug: HiddenLineDrawing.Compute

Hi @rajaa, it is part of a plugin, with ParallelProjection of Front view. I’ve met the issue with various geometries, including a simple rectangular volume. I’ve done many tests today and it seems the issue comes from HLDParam.AddClippingPlane(). If I disable this I don’t have these null outputs. Do you know if any changes has been made in Rhino’s recent releases that would impact the clipping planes? Because my code used to work before. My best guess would be that sometimes objects are compu…