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Maniphest T48991

Particle creation artifacts
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Description

System Information
3x gtx580 (win8.1x64), IntelGma (Ubuntu 14)

Blender Version
2.77a

Short description of error
On an animated parented object, many particles get generated with constant offset from object.
Note: why the delete button is disabled for particles in particle edit mode (baked or not)?

Exact steps for others to reproduce the error

  • Open file
    z-er-particles.blend37 MBDownload
    ,
  • Run animation,
  • Particles get generated on both the object and some pseudo-trajectory of larger radius.

Revisions and Commits

rB Blender
rB4067ab38ab60 Fix T48991: some particles emitted at a distance from object.

Event Timeline

Konstantins Visnevskis (kivig) created this task.Aug 1 2016, 2:18 PM
Alexander Gavrilov (angavrilov) claimed this task.Aug 1 2016, 7:31 PM
Alexander Gavrilov (angavrilov) lowered the priority of this task from 90 to 50.
Alexander Gavrilov (angavrilov) added a subscriber: Alexander Gavrilov (angavrilov).

It looks like due to some kind of numeric precision issues in the loop condition the last subframe isn't properly evaluated, and that makes particles that were supposed to be emitted during that time go crazy.

Alexander Gavrilov (angavrilov) changed the task status from Unknown Status to Resolved by committing rB4067ab38ab60: Fix T48991: some particles emitted at a distance from object..Aug 1 2016, 9:15 PM
Alexander Gavrilov (angavrilov) added a commit: rB4067ab38ab60: Fix T48991: some particles emitted at a distance from object..