Blender Git Commit Log
Git Commits -> Revision 277b1d7
Revision 277b1d7 by Alexander Gavrilov (master) August 6, 2016, 07:11 (GMT) |
Fix T26658: particles stopped or bounced by 100% permeability colliders. There were two issues here. One is that the fix done originally for this bug only checks for colliding with the same face as the single preceeding hit. If the particle hits an edge or vertex of the collider, it in fact hits two or more faces, so the loop ends up cycling between first two of them and reaches the max collision limit. The fix is to disable the collider for the sim step once a permeability roll succeeds, by adding it to a skip list. Skipping just one face causes some particles to bounce at odd angles in case of partial permeability. The second problem was that the collider bounced back a small percentage of particles, and the cause seemed to be that the code was set to flip the velocity if the particle was just past the collider but still within collision distance. Inverting both values causes a half permeable collider to stop particles, so it seems that this if branch shouldn't bounce at all. Test file: {F327322} Reviewers: lukastoenne, brecht Reviewed By: brecht Subscribers: brecht, #physics Maniphest Tasks: T26658 Differential Revision: https://developer.blender.org/D2120 |
Commit Details:
Full Hash: 277b1d76ff73c3dfb2150ec06af622962c300618
Parent Commit: b988309
Lines Changed: +23, -16