Hi @dale , there seems to be an error in Rhino.Geometry.Brep.CreateFromOffsetFace documentation: Use 0.0 to make a loose offset. Otherwise, the document’s absolute tolerance is usually sufficient. When i try to do above using 0.0 as tolerance, Rhino 6 SR34 and Rhino 7 SR6 (Windows) both hang. Rh…

Hi @clement , As usual, I need a sample model and some sample code that I can run here to repeat. Thanks, – Dale

Hi @dale , sorry please find both below. BrepCreateFromOffsetFaceExample.py (835 Bytes) BrepCreateFromOffsetFaceExample.3dm (48.6 KB) _ c.

Hey @clement , I didn’t try V6. But V7 doesn’t hang with a tolerance of 0.0, albeit a slow calculation (~15 seconds on my venerable Surface Book 2). Why not use the document tolerance? – Dale

[image] dale: Why not use the document tolerance? Hi @dale , the offset is done within a realtime GUI and the result is displayed in a conduit while the user changes the offset distance with a slider. I therefore need it as instant as possible. The fastest offset i got using Rhino.RhinoMath.Un…

Thanks @clement . Digging into the code, the offsetter is doing a loose offset. But the code that creates the edges isn’t. I’ll get this fixed. https://mcneel.myjetbrains.com/youtrack/issue/RH-64535 Also, you shouldn’t use a tolerance of RhinoMath.UnsetValue, as the function will make up it’s own,…

Hi @dale , since i have to support RH6 and RH7, what should i use then in RH6 if this is never fixed for RH6 ? Which tolerance value does the function make up on it’s own ? _ c.

[image] clement: Which tolerance value does the function make up on it’s own ? The method does something like this: def test_offset_face(face, distance, tolerance): if not face: return d = distance if face.OrientationIsReversed: d = -d t = System.Math.Abs(to…

[image] dale: Digging into the code, the offsetter is doing a loose offset. But the code that creates the edges isn’t. I’ll get this fixed. Hi @dale , I’d appreciate when creating a loose offset solid that the “extruded” surface would be perpendicular and normal to the surfaces. I’m aware th…

Brep.CreateFromOffsetFace documentation (loose option)

Rhino Developer

brian (Brian Gillespie) June 9, 2021, 4:19pm 11

RH-64535 is fixed in the latest Rhino 7.8 Service Release Candidate

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Brep.CreateFromOffsetFace documentation (loose option)

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