Cache VBOs to speed up 2D/3D charts that draw points.
- Speed up
DrawPoints
,DrawMarkers
,DrawPointSprites
andDrawTriangleMesh
. - In vtkScatterPlotMatrix, only the 3D chart gets redrawn for animations. 2D plots and histograms persist across animation frames.
Cc: @berkgeveci
Edited by Jaswant Panchumarti (Kitware)