search

FreeCAD / FreeCAD

This is the official source code of FreeCAD, a free and opensource multiplatform 3D parametric modeler.
https://www.freecad.org
Other
18.25k stars 3.87k forks source link

[Problem] CAM: 3d surface covers model instead of selected faces #6199

Open FreeCAD-Bug-Importer opened 2 years ago

FreeCAD-Bug-Importer commented 2 years ago

Issue imported from https://tracker.freecad.org/view.php?id=4632

Original report text

When selecting all outside edges of a shape for a single 3D surfacing operation, the entire model gets 3D surfaced; Expectation is just the selected edges are 3D surfaced.

Associated thread: https://forum.freecadweb.org/viewtopic.php?f=15&t=56981

Additional information

The attached images demonstrate that the inclusion of face 7 to the 3d surface operation to complete the outside perimeter causes the entire model to be 3D surfaced. Further commentary on the images may be found in the original thread https://forum.freecadweb.org/viewtopic.php?f=15&t=56981

Steps to reproduce

Add all outside edges of a shape to by applied within a single 3D surface operation and apply.

FreeCAD Info

(freecad-0.19-0.3.20201125gita50ae33557.fc33.2.x86_64)
OS: Fedora 33 (Workstation Edition) (GNOME/gnome)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.Unknown
Build type: Unknown
Python version: 3.9.0
Qt version: 5.15.1
Coin version: 4.0.0a
OCC version: 7.5.0
Locale: English/Australia (en_AU)

Other bug information

sliptonic commented 2 years ago

Not sure if this is still a problem but I get a more serious issue testing. I downloaded the file from the forum thread and opened it. Then assigned face 7 to the rounded edge operation. This causes a segfault. bullcutter.cpp:42: ocl::BullCutter::BullCutter(double, double, double): Assertion `radius1 > 0.0' failed.

Russ4262 commented 2 years ago

0.20 pre-release analysis with Revision 28638:

The root cause of this bug is related to the current Millface bug not respecting the model: weakness in target shape formation. While this clearly is a bug, the user is able to mill the selected faces in this case, just not in one smooth operation. This fix will likely not be a mild fix, but I can only speculate. Personally, I am not in a place to refactor anything to fix a bug like this. My opinion is that priority is low with consideration to a pending 0.20 release. However, I do feel the 3D Surface op is a strong component of the Path WB from a user perspective based on forum comments, and therefore might merit the attention to address this bug now.

Re: ballcutter segfault - I do not receive any error when adding Face 7 and computing the modified operation per bug report.

sliptonic commented 2 years ago

Hm. I'm getting the segfault even in trivial tests. Just FYI, it's BULL cutter not BALL. Any use of the bullcutter is segfaulting for me.

Russ4262 commented 2 years ago

Is the seg fault using the FC file provided in the forum link provided in this issue? And, you say that 3D Surface is throwing a fault whenever the bull cutter is used, at any time? Will you please post your FC info. Perhaps this is OS specific, or python related? Will you please post the seg fault error text. Thanks.

My FC info for reference. [code] OS: Windows 10 Version 2009 Word size of FreeCAD: 64-bit Version: 0.20.28671 +6 (Git) Build type: Release Branch: master_prs Hash: 3ecfc7fc12fa2b311aa58e3c7f2e4ea49775d867 Python 3.8.6+, Qt 5.15.2, Coin 4.0.1, OCC 7.5.0 Locale: English/United States (en_US) Installed mods:

luzpaz commented 1 year ago

@sliptonic when you get a chance can you follow-up to russ's question?