View Issue Details
|ID||Project||Category||View Status||Date Submitted||Last Update|
|0000222||FreeCAD||Bug||public||2010-12-21 09:32||2010-12-31 12:04|
|Summary||0000222: Union of Box and Torus|
Create a box
Try to union them.
|Additional Information||Win7 32bit|
latest unstable build (3797)
|Tags||No tags attached.|
||This is a bug or limitation of the OpenCascade CAD kernel. There are many known problems with boolean operations with certain shapes.|
Just to report - I have tested this with NaroCAD, and it seems to work. Union and cut with Box, Torus and sphere worked fine. NaroCAD works with Open CasCade too.
In OCC for many things there are two or more algorithms available to do certain tasks. Especially, for boolean operations there is a second algorithms which apparently is even faster but not very accurate. Maybe the NaroCAD guys used this alternative. I have to check...
Many thanks for the hint!
||I got the difference. The point is that we always delete the internal triangulation of a shape after displaying it to free some memory and keep exported brep files files rather slim. However, for certain shapes such as torus this has some drawbacks like the not properly working boolean operations.|
||Fixed in 3842. To solve the issue all occurrences of BRepTools::Clean have been removed since this causes the problems for BOP of torus.|
|2010-12-21 09:32||pperisin||New Issue|
|2010-12-21 10:52||wmayer||Relationship added||duplicate of 0000177|
|2010-12-21 10:54||wmayer||Note Added: 0000465|
|2010-12-28 14:32||pperisin||Note Added: 0000475|
|2010-12-28 14:33||pperisin||Note Edited: 0000475|
|2010-12-28 15:59||wmayer||Note Added: 0000476|
|2010-12-30 11:26||wmayer||Note Added: 0000477|
|2010-12-31 12:04||wmayer||Note Added: 0000479|
|2010-12-31 12:04||wmayer||Status||new => closed|
|2010-12-31 12:04||wmayer||Resolution||open => fixed|