CurvesWB
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tomate44
Sketch_On_Surface fails with `BRepCheck_Analyzer::Init() - NULL shape`
When trying to extrude a sketch containing certain text characters using Sketch_On_Surface, the extrusion fails with the following log:
09:06:22 Sketch bounds = (-42.00254100000001, 200.946716, -31.21605500000001, 43.55298600000001)
09:06:22 Target face bounds = (0.0, 6.283185307179586, 0.0, 1.0)
09:06:22 mapping shape # 1
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 0:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 1:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 2:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 3:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 4:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 5:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 6:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 7:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 8:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 9:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 10:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 11:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 12:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 13:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 14:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 15:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 16:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 17:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 18:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 19:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 20:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 21:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 22:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 23:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 24:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 25:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 26:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 27:Invalid initial face
09:06:22 Total : 28 shapes
09:06:22 mapping shape # 1
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 0:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 1:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 2:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 3:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 4:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 5:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 6:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 7:Invalid initial face
09:06:22 Self-intersecting wire
Unorientable shape
09:06:22 8:Invalid initial face
09:06:22 Traceback (most recent call last):
File "/home/yawkat/.local/share/FreeCAD/Mod/Curves/./freecad/Curves/Sketch_On_Surface.py", line 297, in execute
shapes_2 = self.map_shapelist(imput_shapes, quad, f2.Face1, obj.FillFaces)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/yawkat/.local/share/FreeCAD/Mod/Curves/./freecad/Curves/Sketch_On_Surface.py", line 199, in map_shapelist
shapelist.extend(self.map_shape(shape, quad, face, fillfaces))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/yawkat/.local/share/FreeCAD/Mod/Curves/./freecad/Curves/Sketch_On_Surface.py", line 232, in map_shape
return self.build_faces(wirelist, face)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/yawkat/.local/share/FreeCAD/Mod/Curves/./freecad/Curves/Sketch_On_Surface.py", line 180, in build_faces
f.validate()
<class 'Part.OCCError'>: BRepCheck_Analyzer::Init() - NULL shape
09:06:22 Recompute failed!
This issue seems to be specific to some characters such as 'k' and 'n'.
I've attached a reproducer project.
null-shape-sample.FCStd.gz unzips to a folder, not a FCStd file, so can't open it.
what do you mean? it's a gz file, it can't unzip to a folder. But I will attach it as a zip as well.
zip file works gz didn't.
I notice that it works with a reduced number of letters - despite the error messages. Add one more letter to the 'abcdefg' Shapestring in my file (doesn't matter which!) and it fails. An error counter somewhere -or the wire sort finally fails?
null-shape-sample_EW.FCStd.zip