Crash on Convex decomposition

[beo6]

Editor crashes when i did the following.

- Build a simple mesh out of a box (carved)

- exported it as model

- opened the model and opened the Convex Decomposition setting.

- pressed apply

- = crash after the error "Mesh polygon vertices do not match"

 

(btw. i think the window name has a typo? Shouldn't it be "Convex Decomposition" instead of "Convex Decompoisition" ?

[Josh]

Please upload your model file.

[Josh]

On 10/5/2025 at 8:56 AM, beo6 said:

Shouldn't it be "Convex Decomposition" instead of "Convex Decompoisition" ?

[EirikNesje]

Experiencing the same thing but to me it happens every time the model is imported using wavefront obj format. Saving the same model as glb formatted (using blender) and import it to the engine works fine (tried with models created in both blender and silo and none of the obj based files can be processed without switching to glb format).

BR

Eirik

 

 

[Josh]

Thank you, but I cannot investigate this without a model to test.

[EirikNesje]

Just exporting/saving the default cube from blender to a obj formatted file and import it will fail when decomposition as applied.
 

[beo6]

Sorry but i described a perfectly fine list to follow that consists of 5 steps and do not require any external model file.

Its beyond me why i need to provide a model file for this unless you tried to follow the steps and could not reproduce it.

my guess is that it crashes because the file contains more than one BSP node.

 

Also making fun of a hint to a simple typo is unprofessional and can hurt people - resulting in not wanting to provide any more help.

I understand the joke but i think is wrong in a bug report forum and when trying to be professional.

[Josh]

44 minutes ago, beo6 said:

Also making fun of a hint to a simple typo is unprofessional and can hurt people - resulting in not wanting to provide any more help.

I understand the joke but i think is wrong in a bug report forum and when trying to be professional.

Thr typo in the window is my own. I am making fun of my own mistake.

[Josh]

I think this must be happening because the mesh is using quads instead of triangles. I didn't realize this until @EirikNesje started talking about OBJ files, which are the only way to get quads out of Blender.

[EirikNesje]

Hi. Tested with doing triangulate on my OBJ files that failed earlier and all worked well even when imported as OBJ files into Leadwerks and doing the decomposition 

[Josh]

I believe the problem is solved, at least in the model that I tested I was using to test. This will be included in the next update.

[Josh]

@beo6 The editor has now been updated with this fix. Please let me know if any other problems occur.