I need quite often to extract a silhouette of some parts to be drafted in production drawings.
Rhino has got already Make2D or Silhouette but if the source surface is not watertight output curves need a lot of touch up.
Repairing input surface is out of question here: naked edges, missing or bad surfaces, twisted fillets… among hundreds of surfaces.
This is my current workflow, I found it to be often quicker and more accurate even if more tricky…
Starting from the Active view representing desired geometry:
1 - Set desired View (Top / Side / Iso / …)
2 - Design a reference surface at a known position and size
3 - Set display mode to Custom Display mode with flat colors and no edges
4 - ViewCaptureToFile
5 - Process saved view image file with Vectorize
6 - Size to reference surface, Orient to source View and Position at reference surface.
7 - Ungroup and Join curves
8 - The result is a clean collection of closed curves.
9 - Arrange curves on sheet, ready to be hatched or filled for 2d drafting
10 - In alternative to 9 I Copy-Paste from Rhino 8WIP to BricsCAD when output file is a DWG.
I am not good in scripting, but would like to perform steps 2-8 with a simple command/script.
Any help or suggestion is welcome,