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+--- Thread: Strange looking distance field (/thread-1069.html)
Strange looking distance field - bobby - 10-04-2019
Hello Obi,
Sometimes when I generate distance fields, they look strange in the preview. Namely there are artefacts that are not close to the mesh. I checked in blender that the mesh does not have holes. Have you seen this before?
pic:
[attachment=329]
RE: Strange looking distance field - josemendez - 10-04-2019
(10-04-2019, 09:52 AM)bobby Wrote: Hello Obi,
Sometimes when I generate distance fields, they look strange in the preview. Namely there are artefacts that are not close to the mesh. I checked in blender that the mesh does not have holes. Have you seen this before?
pic:
When dealing with pointy zones, low-res distance fields can sometimes miscalculate the distance at points away from the mesh but aligned with these zones . (points aligned with the diagonal of a corner, for instance). Increasing the detail of the field should get rid of this. Also, generating fields from "smoother" meshes is a solution. Note that the actual rendering mesh and the one used to generate the distance field do not have to be exactly the same.
RE: Strange looking distance field - bobby - 11-04-2019
(10-04-2019, 04:56 PM)josemendez Wrote: When dealing with pointy zones, low-res distance fields can sometimes miscalculate the distance at points away from the mesh but aligned with these zones . (points aligned with the diagonal of a corner, for instance). Increasing the detail of the field should get rid of this. Also, generating fields from "smoother" meshes is a solution. Note that the actual rendering mesh and the one used to generate the distance field do not have to be exactly the same.
Thank you for the response Jose.
I have a particular mesh that is having large artefacts. Even when decreasing max error by 100x the same artefacts exist at the same size. The same artefacts exist at depth 5 and 8 with same severity.
I would still like the cloth to interact with a mesh with sharp edges so I don’t want to smooth the mesh. Is there any other options?
(11-04-2019, 01:59 AM)bobby Wrote: Thank you for the response Jose.
I have a particular mesh that is having large artefacts. Even when decreasing max error by 100x the same artefacts exist at the same size. The same artefacts exist at depth 5 and 8 with same severity.
I would still like the cloth to interact with a mesh with sharp edges so I don’t want to smooth the mesh. Is there any other options?
Here are the distance fields:
max error 0.1, max depth 8, 777 nodes:
[attachment=334]
max error 0.001, max depth 8, 102705 nodes:
[attachment=335]
mesh:
[attachment=336]
RE: Strange looking distance field - josemendez - 11-04-2019
(11-04-2019, 01:59 AM)bobby Wrote: Thank you for the response Jose.
I have a particular mesh that is having large artefacts. Even when decreasing max error by 100x the same artefacts exist at the same size. The same artefacts exist at depth 5 and 8 with same severity.
I would still like the cloth to interact with a mesh with sharp edges so I don’t want to smooth the mesh. Is there any other options?
Here are the distance fields:
max error 0.1, max depth 8, 777 nodes:
max error 0.001, max depth 8, 102705 nodes:
mesh:
For such a low-poly mesh you might be better off using a MeshCollider directly. Anyway, if you could send this mesh to support(at)virtualmethodstudio.com for us to take a closer look at it it would be great
