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AIS_InteractiveObject: Initialization bug

Other usage issuesTue, 11/25/2008 - 17:596 replies

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QuestionAuthor

After spending a few hours trying to track down a strange behavior, I found the reason for it. It only happens when I try to run a Delphi application that uses a DLL which makes heavy use of OCC. When it runs in C++, the strange behavior does not pop up.

In my copy of OCC 6.3, in file ais_interactiveobject.cxx, lines 56 to 69: myHasTransformation is NOT initialized. It should be set to Standard_False. It caused detected/selected shapes to be given a different location, thus making them impossible to track.

I modified my local copy to include the fix, and I hope you include it also in OCC's code.

Discussion

6 archived replies

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01Commenter-1

OCCPATCH

(see http://www.opencascade.org/org/forum/thread_12668/ )

02Author

Good idea! It won't only help you, it will also help anyone looking for patches.

03Commenter-2

Please show an example of use OpenCascade in Delphi. Very much I want to work with OpenCascade.

04Commenter-3

... not incorporated in OCCT 6.5.2

Commenter-3

05Commenter-3

Hello Author,

I hope you don't mind me reporting this bug on the dev website...

http://tracker.dev.opencascade.org/view.php?id=22945

06Author

Hi Pawel.

I don't mind, but I thought the fix had been included already. I switched to my own visualization framework long ago now, so I wouldn't have known anyway.

Paúl.