Quadriflow remesh fails on provided model #70608

New Issue

Pieter Schiettecatte · 2019-10-07T16:45:37+02:00

2019-10-07 16:45:37 +02:00

I'm getting following error when running the quadriflow command on the mesh in attachment:

bpy.ops.object.quadriflow_remesh(target_ratio=0.5, target_faces=41900)
QuadriFlow: remeshing failed!

Perhaps this is the limitation of this tool? quariflow mesh error.blend

I'm getting following error when running the quadriflow command on the mesh in attachment: bpy.ops.object.quadriflow_remesh(target_ratio=0.5, target_faces=41900) **QuadriFlow: remeshing failed!** Perhaps this is the limitation of this tool? [quariflow mesh error.blend](https://archive.blender.org/developer/F7794712/quariflow_mesh_error.blend)

Pieter Schiettecatte commented

2019-10-07 16:45:38 +02:00

Added subscriber: @Schiette

Ahmad Bilal commented

2019-10-08 05:08:54 +02:00

Added subscriber: @SomeAB

Ahmad Bilal commented

2019-10-08 05:08:54 +02:00

I can confirm that Quadriflow fails on certain models sometimes .. while it can work with the very same model after a few tries. I was trying to remesh a leaf yesterday. I don't know why exactly this was happening .. so didn't report it yet.

Sebastian Parborg commented

2019-10-08 11:20:29 +02:00

Added subscriber: @ZedDB

Sebastian Parborg commented

2019-10-08 11:20:29 +02:00

Changed status from 'Open' to: 'Archived'

Sebastian Parborg closed this issue

2019-10-08 11:20:29 +02:00

Sebastian Parborg self-assigned this 2019-10-08 11:20:29 +02:00

Sebastian Parborg commented

2019-10-08 11:20:29 +02:00

The issue with this file is that none of the triangles in the mesh is connected to each other. So it does not form a continuous surface and thus quadriflow can't create a mesh for it.

However, even if we merge the verts to make it a continuous surface, the results are not good:

This is the same issue as reported here:
https://github.com/hjwdzh/QuadriFlow/issues/43

This is a fundamental problem with how the quadriflow algorithm works so there is not much to do as we do not have time to come up with a better algorithm for quadriflow.

The issue with this file is that none of the triangles in the mesh is connected to each other. So it does not form a continuous surface and thus quadriflow can't create a mesh for it. However, even if we merge the verts to make it a continuous surface, the results are not good: ![screenshot.png](https://archive.blender.org/developer/F7796383/screenshot.png) This is the same issue as reported here: https://github.com/hjwdzh/QuadriFlow/issues/43 This is a fundamental problem with how the quadriflow algorithm works so there is not much to do as we do not have time to come up with a better algorithm for quadriflow.

Sebastian Parborg commented

2019-10-08 11:29:12 +02:00

For this case instead of using quadriflow, I would merge by distance and then use the tris to quads operator.
Then use the decimate modifier (with the un-subdivide option) to get the polygon count down.

For this case instead of using quadriflow, I would `merge by distance` and then use the `tris to quads` operator. Then use the decimate modifier (with the un-subdivide option) to get the polygon count down.

Pieter Schiettecatte commented

2019-10-08 15:58:06 +02:00

Thank a ton @ZedDB . I'm still starting out with Blender and didn't think of checking whether the mesh was continuous.

The steps you described worked perfectly.

Thank a ton @ZedDB . I'm still starting out with Blender and didn't think of checking whether the mesh was continuous. The steps you described worked perfectly.

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Quadriflow remesh fails on provided model #70608