[vtkusers] How to initialize vtkAngleWidget with three points specified?

[cybfly]

angleWidgetWithSetPoints.cpp
<http://vtk.1045678.n5.nabble.com/file/n5720558/angleWidgetWithSetPoints.cpp>  
I encountered this problem and i found the VTK source codes does not initial
the three points presentation.
So i inherit a class of vtkAngleRepresentation3D, initial the points then i
can modify them in some other place and no "null point 1 representation"
appears. 
Like codes below and the full codes in the attachments:
class vtkAngleRepresentation3DWithPointRepresentation: public
vtkAngleRepresentation3D
{
	public:
	 static vtkAngleRepresentation3DWithPointRepresentation *New()
	 {
		  return new vtkAngleRepresentation3DWithPointRepresentation;
	 }
	 void initialPointRepresentation()
	 {
		 this->Point1Representation = vtkPointHandleRepresentation3D::New();
		 this->Point2Representation = vtkPointHandleRepresentation3D::New();
		 this->CenterRepresentation = vtkPointHandleRepresentation3D::New();
	 }
};
<http://vtk.1045678.n5.nabble.com/file/n5720558/clipAndInitAnglewidget.png> 





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