Particle Physics Limitations

• Physics calculations for particles and physics objects are recalculated if the sequence in the Motion window is moved. Immediately after loading a scene, the Figure Window will not calculate or draw the preview.
  If the Motion Window sequence is moved backwards, the physics calculations will be reset from the first frame. If the Motion Window sequence is moved forwards then only the physics calculation of the accumulated difference is reset.
• Hierarchical Physics Objects cannot be placed within the physical [physical - Particle Physics] Part in the Browser. It is treated as a single part.
• Drop shadows are not supported when using a movie as a custom image for the Particle Billboard.
• When motion blur is applied to particle billboards, shadows are not supported.
• Shadows and light generated by particle billboards are only available with distant lights, point lights and spot lights.