Solid Difference Issue

[Diannna (Diana)]

Hello everybody,

I was searching a whole forum and trying to solve this issue for a whole day and havent found the solution yet Its becoming desperate

THE ISSUE: Solid difference is showing only one input Brep instead of the difference.

SolidDifference_Issue_Di.gh (2.2 MB)

Here you can see its nicely working with other 2 Breps (polysurfaces)

I have reduced mesh, worked with tolerances among others - nothing working.
All 3 polysurfaces are actually converted Delaunay meshes created from imported point clouds. So I was not modeling them by manually.

Any idea what could be problem?

Thank you very much in advance!
Have a nice day,

Diana

[magicteddy]

Hello,

Your Breps are open, boolean operations are meant to be used on closed polysurfaces.

Could you describe on a simpler case what result you want to obtain ?

Assuming you want to keep the portion of mesh above the cutter, you could use the (quite slow) Trim Solid.

SolidDifference_Issue_Di.gh (2.2 MB)

[Diannna (Diana)]

Hello MagicTeddy,

thank you for the answer!
To be clear. I need 2 Solid Differences - to see volumes (the difference between Terrain Before and Terrain After - the amount of ground to be added and to be removed)

Case 1 is beautifuly working (there are 2 open Breps - Terrain 1 Before and Terrain 2 After)

Case 2 is not working (even though I close those open Breps - Terrain 2 Before and Terrain 2 After)
It is showing only input Breps

Any ideas for the solution?
As I have written Ive tried almost anything but I havent found the source of error

All the best,

Diana

SolidDifference_Issue_Di_230214_correct.gh (3.5 MB)