I am using
vtkScalarBarActor in my application. However, the width/height of
vtkScalarBarActor is changing when the render window is changed.
For example, the width of
vtkScalarBarActor of second figure is much larger than that of first figure. And the large width of
vtkScalarBarActor in second figure is ugly.
Is there any method to set fixed width for
vtkScalarBarActor? I hope it is not changed when the window size is changed.
The placement of those 2D widgets is a proportion of the viewport, so it expectedly changes as the latter’s aspect ratio changes. To have a fixed apparent width regardless of viewport aspect ratio, you have to change the scalar bar’s relative width on each viewport resize event.
Alternativelly, you can try
SetMaximum[Width|Height]InPixels(value) to impose limits to avoid such undesirable effects. Calling
AnnotationTextScalingOff() will switch of text resize so you won’t get huge characters in your scalar bar.
There are several other methods available in
vtkScalarBarActor to control its appearance: https://vtk.org/doc/nightly/html/classvtkScalarBarActor.html .
@Paulo_Carvalho Many thanks for such kindly reply.