Fluid obstacles animated/modified through an armature seem unmodified to fluid domain #63395

New Issue

doodlezucc · 2019-04-08T17:39:03+02:00

doodlezucc commented

2019-04-08 17:39:03 +02:00

System Information
Operating system: Windows-10-10.0.17134 64 Bits
Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 399.24

Blender Version
Broken: version: 2.80 (sub 53), branch: blender2.7, commit date: 2019-04-03 23:27, hash: 0e78e3038d
Worked: 2.79b and before

Short description of error
Fluid collides with the object's default pose mesh despite the 'Export Animated Mesh' option ticked and fluidism being placed behind armature in the modifier stack.
Using the exact same objects in previous Blender versions works as expected.

Exact steps for others to reproduce the error
Based on default startup: (this does work in 2.79)

Create a plane
Create an armature
Select the plane
Shift-select the armature
Press Ctrl+P and choose 'Armature Deform>With Automatic Weights'
Select the armature's bone in pose mode
Move the bone down to z=-0.5
Enable fluid physics of type 'Obstacle' on the plane
Check 'Export Animated Mesh'
Create an Ico Sphere
Scale it by 0.2
Move it up to z=0.5
Enable 'Inflow' fluid physics
(set inflow velocity to 0; 0; -5)
Enable fluid physics (domain type) on the default cube
Bake the fluid simulation
Fluid collides with the plane's default pose

.blend file (just bake the fluid simulation): ArmFluBug.blend

**System Information** Operating system: Windows-10-10.0.17134 64 Bits Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 399.24 **Blender Version** Broken: version: 2.80 (sub 53), branch: blender2.7, commit date: 2019-04-03 23:27, hash: `0e78e3038d` Worked: 2.79b and before **Short description of error** Fluid collides with the object's default pose mesh despite the 'Export Animated Mesh' option ticked and fluidism being placed behind armature in the modifier stack. Using the exact same objects in previous Blender versions works as expected. **Exact steps for others to reproduce the error** Based on default startup: (this does work in 2.79) - Create a plane - Create an armature - Select the plane - Shift-select the armature - Press Ctrl+P and choose 'Armature Deform>With Automatic Weights' - Select the armature's bone in pose mode - Move the bone down to z=-0.5 - Enable fluid physics of type 'Obstacle' on the plane - Check 'Export Animated Mesh' - Create an Ico Sphere - Scale it by 0.2 - Move it up to z=0.5 - Enable 'Inflow' fluid physics - (set inflow velocity to 0; 0; -5) - Enable fluid physics (domain type) on the default cube - Bake the fluid simulation Fluid collides with the plane's default pose .blend file (just bake the fluid simulation): [ArmFluBug.blend](https://archive.blender.org/developer/F6919331/ArmFluBug.blend)

doodlezucc commented

2019-04-08 17:39:03 +02:00

Added subscriber: @doodlezucc

Sebastian Parborg commented

2019-04-09 19:16:08 +02:00

Added subscribers: @Sergey, @ZedDB

Sergey Sharybin was assigned by Sebastian Parborg

2019-04-09 19:16:08 +02:00

Sebastian Parborg commented

2019-04-09 19:16:08 +02:00

@Sergey feel free to reassign if this is not for you.

I getting a lot of error prints:

ERROR (bke.armature): /home/zed/prog/blender/source/blender/blenkernel/intern/armature.c:1165 armature_deform_verts: Armature does not have bbone cache Armature, usually happens due to a dependency cycle.

But no "dependency cycle detected" prints.

@Sergey feel free to reassign if this is not for you. I getting a lot of error prints: ``` ERROR (bke.armature): /home/zed/prog/blender/source/blender/blenkernel/intern/armature.c:1165 armature_deform_verts: Armature does not have bbone cache Armature, usually happens due to a dependency cycle. ``` But no "dependency cycle detected" prints.

Sergey Sharybin commented

2019-04-26 18:04:36 +02:00

I can not reproduce the issue, and no errors are printed.
There were some fixes in the related areas. Mind testing it with the latest buildbot builds?

I can not reproduce the issue, and no errors are printed. There were some fixes in the related areas. Mind testing it with the latest buildbot builds?

Sebastian Parborg commented

2019-04-26 18:37:15 +02:00

Changed status from 'Open' to: 'Resolved'

Sebastian Parborg closed this issue

2019-04-26 18:37:15 +02:00

Sebastian Parborg commented

2019-04-26 18:37:15 +02:00

I can't reproduce this anymore. So unless @doodlezucc chimes in and says otherwise, I'll mark this as resolved.

doodlezucc commented

2019-04-26 18:49:11 +02:00

Just tried a new build, can confirm that this has been fixed, thanks!

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Fluid obstacles animated/modified through an armature seem unmodified to fluid domain #63395