Semi transparent objects rendering about vedo HOT 3 CLOSED

Hi Marco,

That fixed it!

Just an unrelated question (don't want to open an issue for this): are there ways to improve performance?
I've had some users who expressed the desire to rendered large number of objects (10k - 1M spheres ), but when I tried it my computer started complaining at about 10k objects. Any idea?

Thank you very much,
Federico

from vedo.

Hi Federico
cool project! I think this is a general vtk-related problem, as vtkplotter has no control over it.
Probably it's fixable by setting:

from vtkplotter import settings
settings.useDepthPeeling = True
# settings.useFXAA = True

(perhaps with some combination of the two flags).
See also related example here where actually one can reproduce the issue by setting useDepthPeeling=False.
Hope this helps!
Marco

from vedo.

Cool!

..if you create many actors independently at some point you will lose performance.. things you can do are:

• reduce the number of vertices/resolution in meshes (e.g. with shapes.Sphere(res=10)
• decimate large meshes (actor.decimate(fraction))
• substitute Sphere with Points (or Spheres), and/or use settings.renderPointsAsSpheres=False
• use glyphs for repeated objects, see examples:
  manyspheres.py, manypoints.py and glyphs.py or glyphs_arrows.py
  

Let me know if this improves speed/memory
Cheers, Marco

from vedo.