[vtkusers] Point Smoothing

[meakcey]

Hi
I am working on a point cloud renderer with Qt which OpenGLWidget has been
promoted as custom class and all VTK related codes are included. That seems
working stable.

When I rendered point cloud, they seems as square and so I tried to apply
GetRenderWindow()->PointSmoothingOn();
in the beginning of the load events.

Points seems as circle till I resize or move the window.
How can I keep them always circle?





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[meakcey]

Somehow any of PointSmoothing related functions did not work.
Finally that has resolved by adding glEnable(GL_POINT_SMOOTH) before
renderVTK();

Much better like below

...
actor->SetMapper(mapper)
renderer->AddActor(actor);

glEnable( GL_POINT_SMOOTH );
glEnable( GL_BLEND );
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
glPointSize( 2.0 );

renderVTK();



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