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IDProjectCategoryView StatusDate SubmittedLast Update
0023378Community[OCCT] OCCT:Modeling Algorithmspublic2012-08-13 18:262012-08-13 18:28
Assigned Tojgv 
PlatformOSOS Version
Product Version[OCCT] 6.5.3 
Target VersionFixed in Version 
Summary0023378: BRepAlgoAPI_Cut returns wrong result
DescriptionThe following cut operation returns a wrong result in OCCT 6.5.3: only one face is returned.
In OCCT 6.5.2 the correct number of faces (2) are returned, but the bigger face is topologically not what is expected. It also cannot be displayed in shaded mode.

Draw script:

restore blower1.brep b
explode b
bop b_1 b_2
bopcut r
whatis r
explode r

The object is cut by a cylinder. Both have only a very small volume in common. So the biggest part of the object should be returned (see Capture.PNG).

In OCCT 6.5.2 a very small face and a big face (which seems to be invalid) are returned.
In 6.5.3 only a very small face is returned, but the bigger face is not returned at all.

The problem has been discussed on the forum: [^] and confirmed to be reproducible.
TagsNo tags attached.
Test case number
Attached Filespng file icon Capture.PNG (35,235 bytes) 2012-08-13 18:26
? file icon blower1.brep (528,639 bytes) 2012-08-13 18:26
png file icon Result_OCCT652.PNG (14,249 bytes) 2012-08-13 18:28

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- Issue History
Date Modified Username Field Change
2012-08-13 18:26 Timo New Issue
2012-08-13 18:26 Timo Assigned To => jgv
2012-08-13 18:26 Timo File Added: Capture.PNG
2012-08-13 18:26 Timo File Added: blower1.brep
2012-08-13 18:28 Timo File Added: Result_OCCT652.PNG

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