Operating system: Windows 10 Home 64-bit (2004)
Graphics card: GeForce GTX 1660 SUPER/PCIe/SSE2
version: '4.5.0 NVIDIA 460.89'
Broken: Version: 2.91.0, branch: master, commit date: 2020-11-25 08:34, hash: 0f45cab862b8, type: Release
Name: Cell Fracture (0, 2)
Author: ideasman42, phymec, Sergey Sharybin
Short description of error
Running the Cell Fracture add-on on high-polygon triangulated or quad base mesh (such as 3D scanned model) results in fractured objects that are highly decimated/reduced as compared to the original base mesh they were born from.
Exact steps for others to reproduce the error
- Import high-poly STL or OBJ to Blender
- Create simple particle system for object with particle source set to Volume.
- Run Cell Fracture add-on from Object Menu>Quick Effects>Cell Fracture with default settings
- Resulting fractured objects are highly decimated. If the object being fractured consists of all quads, it will be automatically triangulated and decimated to a lower-poly version of the original mesh. If the object is already triangulated, it will be decimated.
It seems that at least one previous version of the Cell Fracture add-on had a "Simplify Base Mesh" option that has disappeared from the current version of Blender. This option is also referenced on the add-on's description page.
It would be beneficial to be able to utilize this add-on and maintain the original topology of the base mesh in the fractured objects.
Wondering if anyone here can offer some advice on the Cell Fracture add-on.
I am trying to fracture some very high-poly triangulated 3D scans but it seems that the Cell Fracture add-on takes it upon itself to simplify the base mesh on it's own and the resulting fractured objects are very low res.
I looked into this and I see that about 2 years ago, the bundled Cell Fracture add-on had a lot more options than what are available now in 2.91. Specially, it appears that there was once a 'Simplify Base Mesh' option in the Cell Fracture setup (along with numerous other options) but they are no longer present in the add-on.
Even though it would appear that the 'Simplify Base Mesh" option has been removed, is it plausible that the add-on is applying this feature during the fracture process?
I would like to avoid Cell Fracture from simplifying my mesh. I am also curious about why the current version of Cell Fracture has fewer options available than it appears to have in previous versions.