GH Solid operations bugged?

Grasshopper
1

Using Trim Solid, Solid Difference and Solid Union in Grasshopper 1.0 and Rhino 6 I get very weird solutions.

-Trim Solid with Closed breps earlier returned me a closed brep yesterday trimmed but today it’s an open brep (???)
-Solid Difference seems to be making what Solid Union is supposed to do
-Solid Union is making what Solid Difference is supposed to do
-If I bake the closed breps into Rhino the solid booleans work fine and correctly

Any thoughts on this? Seems not to be working correctly and is a pain in my ass :confused:
Sadly I can’t post my entire script here but I don’t think it’ll make a difference in this case.

image
image.png1124×496 58.3 KB
gh_solid_booleans.gh (22.3 KB)

2

Some of the breps return negative volumes. Could it be so that the surface normals are pointing in an inverse direction?

3

Hi Rasmus,

what version of Rhino are you on?

4

Rhino 6

5

I found the culprit. For some reason this python script makes some of the breps in negative volume.

image
image1477×676 70.9 KB
gh_boolean_differences.gh (35.7 KB)