[vtkusers] How to tune the line with of vtkProperty2D

[Liu_tj]

Hi,

I use vtkAngleWidget to measure angle. I want to tune the line width of the angle leaders and arc. Below is my C# code:

            m_angleWidget = vtkAngleWidget.New();
            m_angleWidget.SetInteractor(m_renderWin.GetInteractor());
            m_angleWidget.PlacePointEvt += new vtkObject.vtkObjectEventHandler(AngleWidget_PlacePointEvt);
            m_angleRep = vtkAngleRepresentation2D.New();
            m_angleRep.GetRay1().GetProperty().SetColor(0.0, 1.0, 0.0);
            m_angleRep.GetRay1().GetProperty().SetLineWidth(8.0f);
            m_angleRep.GetRay2().GetProperty().SetColor(0.0, 1.0, 0.0);
            m_angleRep.GetRay2().GetProperty().SetLineWidth(8.0f);
            m_angleRep.GetArc().GetProperty().SetColor(0.0, 1.0, 0.0);
            m_angleRep.GetArc().GetProperty().SetLineWidth(8.0f);
            m_angleRep.GetArc().GetLabelTextProperty().SetColor(0.0, 0.0, 1.0);
            m_angleWidget.SetRepresentation(m_angleRep);

If I call SetLineWidth with 5.0f, 6.0f, 7.0f and 7.5f, I get the same effect as 1.jpg; if I call SetLineWidth with 8.0f, the effect is as 2.jpg. For me, the line in 1.jpg is too slim, the line in 2.jpg is too wide, how to tune it?

Thanks
Liu Peng

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