Hi is there a way to get the contour of a brep by like in Mesh shadow (a Sillouette), i can not make a mesh out of it since it is too complex, the goal is to get one Polyine like here in red
thanks
Hi is there a way to get the contour of a brep by like in Mesh shadow (a Sillouette), i can not make a mesh out of it since it is too complex, the goal is to get one Polyine like here in red
thanks
I don’t understand what you are looking for
No GH file?
3. Attach minimal versions of all the relevant files
@Joseph_Oster @inno i hope that can explain my problem
here is the simplfyed Problem i want to connect the upper and lower curve to get one boundary surface with four edges
Problem.gh (9.3 KB)
Problem a.gh (14.3 KB)
Is that also possible for this shape?
( very lower middlepart)
So it fits every size.
For this type of geometry.
Problem b.gh (17.1 KB)
1 Like
Problem Solve B+.gh (59.8 KB)
Thanks to @leopoldomonzani i got an Idea how to solve that for every shape which has Points with same X Values
@Joseph_Oster @inno @leopoldomonzani
The original question was actually I’m trying to project the silhouette (like a shadow from top view) of a complex BREP onto a horizontal plane in Grasshopper. I know mesh-based shadow methods exist, but converting this BREP to mesh is too complex and not feasible in my case.
I’ve attached a simplified example that’s close to the original.
Any ideas on how to get that 2D silhouette or outline?
Thanks!
Problem C Sillouette.gh (11.4 KB)
geometry not internalized
by the way, given a weird-shaped Brep with ALL PLANAR FACES, you can just project all the faces contours (closed curves) in the plane you want to get the shade on, then Region Union them:
Problem C Sillouette_inno.gh (18.5 KB)
I say “ALL PLANAR FACES” because if they have concavities/convexities, you won’t get those by sampling just their contour… but if they are all planar then it should work