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SELECTION OF OBJECTS

Draw Harness and SamplesMon, 02/15/2021 - 23:395 replies

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QuestionAuthor

Hi, ı have a problem with selection of objects and highlighting them.

For selection in a mode ı do the following code

myContext->Deactivate(shapes[i].shape);
myContext->Activate(shapes[i].shape, mode);
myContext->MoveTo(x, y, myView, true);
myContext->Select();

When i choose a mode for example Vertex mode(for a box). I can only choose vertexs but the highlighting always for edges. if i click mouse and choose the object selected object is edges. What i am saying is selecting part is working true but the result (highlithing and selected object == ALWAYS EDGES) is wrong. How can i fix this?

Please help!!

Discussion

5 archived replies

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01Commenter-1

Your description doen't make sense:

  • AIS_InteractiveContext::Deactivate() deactivates all selection modes in object.
  • AIS_InteractiveContext::Activate() activates a single selection mode in object.

So that if quoted sequence of calls is all that you have:

Handle(AIS_Shape) theShape;
myContext->SetSelectionModeActive (theShape, AIS_Shape::SelectionMode (TopAbs_VERTEX), true, AIS_SelectionModesConcurrency_Single, false);
myContext->MoveTo (x, y, myView, false);
myContext->SelectDetected (AIS_SelectionScheme_Replace);
myContext->UpdateCurrentViewer();

then there is no way selection could highlight any Edge of this Shape.
There is either some bug, or scenario description is incomplete.

02Author

Submitted by emir yılmaz on 16 February, 2021 - 08:30

Hİ, thanks for your answer. But still ı have a problem.

myContext->SetSelectionModeActive and myContext->SelectDetected this funcitons does not appear in my library. There is setSelectionMode (not active) and Select()  not SelectDetected()  . What can ı do to use this funcitons? 

03Commenter-1

That code wasn't meant to propose any solution - it is the same logic as yours, just ported to the latest OCCT version.
AIS_InteractiveContext::SetSelectionModeActive() has been introduced by OCCT 7.3.0, so you are using some older release.

04Author

Okay ı got it but what should i do to select face vertex, edges and to highlight them?

05Author

Okay ı got it but what should i do to select face vertex, edges and to highlight them?