Cell Fracture Makes Invalid Mesh For Rigid Body #38481

New Issue

Atomic · 2014-02-04T16:17:40+01:00

Atomic commented

2014-02-04 16:17:40 +01:00

System Information
Windows 7 8GB
nVidia 460gtx

Blender Version
Broken: 2.69 hash:6a2c467
Worked: (optional)

Short description of error
Cell Fracture makes invalid mesh.

Exact steps for others to reproduce the error
Subdivide the default cube 10 times.
Run Cell fracture on the cube with at least one level of recursion.
After it is complete, select all the shards and click Add Active under the Physics Tool TAB.

ERROR: Can't create Rigid Body from mesh with no polygons.

Cell fracture should not make an object with no polygons.
Or Add Active should simply skip invalid objects.

Now I am faced with selecting each shard 1-by-1 and Clicking Add Active...woe is me...

**System Information** Windows 7 8GB nVidia 460gtx **Blender Version** Broken: 2.69 hash:6a2c467 Worked: (optional) **Short description of error** Cell Fracture makes invalid mesh. **Exact steps for others to reproduce the error** Subdivide the default cube 10 times. Run Cell fracture on the cube with at least one level of recursion. After it is complete, select all the shards and click Add Active under the Physics Tool TAB. ERROR: Can't create Rigid Body from mesh with no polygons. Cell fracture should not make an object with no polygons. Or Add Active should simply skip invalid objects. Now I am faced with selecting each shard 1-by-1 and Clicking Add Active...woe is me...

Atomic commented

2014-02-04 16:17:40 +01:00

Changed status to: 'Open'

Atomic commented

2014-02-04 16:17:40 +01:00

Added subscriber: @AtomP

Atomic commented

2014-02-04 16:19:03 +01:00

I am attaching a screen shot of me Cell Fracture settings.

I am attaching a screen shot of me Cell Fracture settings.![Screen_shot_2014-02-04_at_10.18.24_AM.png](https://archive.blender.org/developer/F75967/Screen_shot_2014-02-04_at_10.18.24_AM.png)

Campbell Barton was assigned by Sergey Sharybin

2014-02-06 09:55:12 +01:00

Sergey Sharybin commented

2014-02-06 09:55:12 +01:00

Added subscribers: @ideasman42, @Sergey

Sergey Sharybin commented

2014-02-06 09:55:12 +01:00

@ideasman42, this one is for you! :)

Thomas Dinges commented

2014-02-06 22:43:38 +01:00

Added subscriber: @ThomasDinges

Ejner Fergo commented

2014-05-27 01:32:43 +02:00

Added subscriber: @EjnerFergo

Ejner Fergo commented

2014-05-27 01:32:43 +02:00

@AtomP
Following your steps- [x] and playing the animation, when the cube/shards falls I get a single vertex left hanging. Simply selecting and deleting this vertex "fixes" the issue. I don't understand why you would select every shard individually to make them active?

I've had this happen many times when using cell fracture + RBD, and just fix it by manually deleting the leftover vertices. Of course it would be nice if the cell fracture script could automatically delete these disconnected vertices/edges, but other than that the RBD tool does its job.

@AtomP Following your steps- [x] and playing the animation, when the cube/shards falls I get a single vertex left hanging. Simply selecting and deleting this vertex "fixes" the issue. I don't understand why you would select every shard individually to make them active? - [x] I've had this happen many times when using cell fracture + RBD, and just fix it by manually deleting the leftover vertices. Of course it would be nice if the cell fracture script could automatically delete these disconnected vertices/edges, but other than that the RBD tool does its job.

Aaron Carlisle commented

2014-12-15 00:48:06 +01:00

Added subscriber: @Blendify