How to visualize dense dataset in OCC

Hello,I'm writing a program processing dense dataset with millions of points in OCC.I tried to create a presentable object for each point,but it was quite difficult to redraw the screen,I could not even move the mouse.If you have better idea, please contact with me(,thank you very much.

Svetlozar Kostadinov's picture

You may look at Salome platform source code. It has a lot of data visualization tools and it's based on OCC. I'm not sure if OCC is the right choice for your task. There's another free library called VTK (, which is used to visualize 3D volumetric data. OCC is not good at drawing such amount of separate objects.