Maniphest T77654

explode modifier doesnt react properly to vertex weight proximity
Closed, Archived
Actions

Assigned To
Campbell Barton (campbellbarton)
Authored By
michael campbell (3di)
Jun 8 2020, 11:25 PM
Tags
  • BF Blender
  • Modifiers
  • Modeling
Subscribers
Campbell Barton (campbellbarton)
Germano Cavalcante (mano-wii)
michael campbell (3di)

Description

System Information
Operating system: Windows-10-10.0.17763-SP0 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.92

Blender Version
Broken: version: 2.90.0 Alpha, branch: master, commit date: 2020-06-07 22:16, hash: rB281319653e5b
Worked: Never

Short description of error
explode modifier doesnt react properly to vertex weight proximity

Exact steps for others to reproduce the error
open file and press play, the explode doesnt update accordingly as the target (cube) passes through it), The weights are being updated because the displace modifier works correctly.

explode modifier doesnt react properly to vertex weight proximity.blend7 MBDownload

Related Objects

Mentioned In
rBM7092: Explode Modifier: add known limitation to address T77654
T80613: Assert in UI_but_number_precision_set
Mentioned Here
rBM7092: Explode Modifier: add known limitation to address T77654

Event Timeline

michael campbell (3di) created this task.Jun 8 2020, 11:25 PM
Richard Antalik (ISS) changed the task status from Needs Triage to Confirmed.Jun 19 2020, 2:51 AM
Richard Antalik (ISS) updated the task description.
Richard Antalik (ISS) added projects: Modifiers, Modeling.
Germano Cavalcante (mano-wii) added a subscriber: Germano Cavalcante (mano-wii).Jun 19 2020, 3:05 AM

I don't know what to expect here.

If I'm not mistaken, the modifier binds the faces (informed by the vertex group) with the particles at the beginning of the animation.
If the vertex group is animated, then we have to assume that all faces must always be computed at the beginning of the animation but only a few will not move.
That would be inefficient and I don't think it would be really useful.
What would happen with the animated vertex group is that, depending on the weight of the vertex, some faces would jump to the animated position and others would return to the original position.

Is that what is intended?

Campbell Barton (campbellbarton) mentioned this in T80613: Assert in UI_but_number_precision_set.Sep 9 2020, 4:07 AM
Campbell Barton (campbellbarton) mentioned this in rBM7092: Explode Modifier: add known limitation to address T77654.Sep 22 2020, 2:07 AM
Campbell Barton (campbellbarton) closed this task as Archived.Sep 22 2020, 2:10 AM
Campbell Barton (campbellbarton) claimed this task.
Campbell Barton (campbellbarton) added a subscriber: Campbell Barton (campbellbarton).

Closing since I think this is a reasonable limitation, noted in the documentation rBM7092.