Get TopoDS_Shape from AIS_InteractiveObject

Question

I'm very new to OPEN CASCADE. Can someone please let me know how to get the shape from AIS_InteractiveObject which used to view the shapes. Thanks.

There are no direct functions to get the shapes. I checked with the class discription in Open CASCADE documentation.

score 1 · Accepted Answer · answered May 22 '23 at 04:47

Let's say you have your AIS_InteractiveObject called "interactiveObj". You can downcast this to "AIS_Shape" first.

interactiveObj = ... ; // your interactive object
Handle(AIS_Shape) aisShape = Handle(AIS_Shape)::DownCast(interactiveObj ); // convert to AIS_Shape

Then you can get the TopoDS_Shape from the object.

TopoDS_Shape shape = aisShape->Shape();

This is the simple method.

TopoDS_Shape shape = Handle(AIS_Shape)::DownCast(interactiveObj)->Shape(); // get the TopoDS_Shape

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