| Using BRepAlgoAPI_Cut to subtract from a shell |
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| Kevin Malachowski |
2012/06/12 21:37 |
I need to create a hole in a shell and after some google searches I found many people suggested using the boolean subtraction operation "Cut". So I did a cut of a solid from a relatively simple shell to do this, but instead of it removing the intersection, it returned only the intersection. What am I doing wrong?
Here is basically how I called it:
TopoDS_Shape shell = ...;
TopoDS_Shape solid = ...;
TopoDS_Shape cut = BRepAlgoAPI_Cut(shell, solid);
Attached is an infographic showing you exactly what happened. |
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| | Kevin Malachowski |
2012/06/12 21:51 |
| Never mind. Turn out if I use BRepAlgoAPI_Common it works exactly as I want it to... even though the names seem completely backwards, at least in my opinion. |
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| | Kevin Malachowski |
2012/06/13 01:37 |
| Another correction: The reason my code was acting as the opposite as I previously expected was because I was careless in the direction of adding points to my solid. For anyone who doesn't know, it is important to notice the direction of the cross-vector of a plane. Clockwise points means the vector points out, counterclockwise means it points in. These are important to notice when using the boolean operations, |
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| | jelle |
2012/06/13 11:38 |
| Thanks Kevin, that's meaningful to share here... |
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| | Sharad Verma |
2012/06/13 13:17 |
This is useful
Thanks.. :) |
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| | Umesh Worlikar |
2012/07/08 22:45 |
Useful indeed!
Thanks.
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