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Gishara Indeewarie | 24 Jul 2012 13:03
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Set a fixed control point in vtk contour widget

Hi all,

I am doing a contour widget in VTK according to the example below:


I want to make a certain control point as fixed, so the user can't drag it.
I want to do it for that particular point only.
I tried many methods, such as keypressactivationoff, draggableoff etc but did not work out.
Is there any way to do this?

Thanks.
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Gishara Indeewarie | 26 Jul 2012 13:28
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Re: Set a fixed control point in vtk contour widget

Hi,

I did it by accessing the interaction event with vtkCommand and if the interaction is with the point we need to set as fixed, set the active node position to the
coordinates of that point.
So it remains fixed. Below is the code.

                    double point[3] = {0.32722276735030559,0.086951000000000001,0};
        this->Representation->GetNthNodeWorldPosition(0,pos2);
this->Representation->GetActiveNodeWorldPosition(pos);
if( (pos[0] == pos2[0]) && (pos[1]==pos2[1])){
this->Representation->SetActiveNodeToWorldPosition(point)
}

Thanks.

On Tue, Jul 24, 2012 at 4:33 PM, Gishara Indeewarie <gish.777 <at> gmail.com> wrote:
Hi all,

I am doing a contour widget in VTK according to the example below:


I want to make a certain control point as fixed, so the user can't drag it.
I want to do it for that particular point only.
I tried many methods, such as keypressactivationoff, draggableoff etc but did not work out.
Is there any way to do this?

Thanks.



--
Gish
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Gmane