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Geometry Nodes: Add volume grid conversion nodes #118830

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Hans Goudey merged 5 commits from HooglyBoogly/blender:geometry-nodes-grid-conversion-nodes into main 2024-02-29 01:20:36 +01:00
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Hans Goudey commented 2024-02-28 04:54:37 +01:00
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Adds two nodes as "grid" equivalents to the existing volume nodes:

  • Grid to Mesh
  • Distribute Points in Grid

The code for the latter is just duplicated for now. In a later step
old node can be replaced by versioning with two new nodes.

image

Adds two nodes as "grid" equivalents to the existing volume nodes: - **Grid to Mesh** - **Distribute Points in Grid** The code for the latter is just duplicated for now. In a later step old node can be replaced by versioning with two new nodes. --- ![image](/attachments/d7d95aa7-3f52-4c8b-880d-7182b48881fa)
image.png
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Hans Goudey added 1 commit 2024-02-28 04:54:43 +01:00
f071c0079d Geometry Nodes: Add volume grid conversion nodes 
Adds two nodes as "grid" equivalents to the existing volume nodes:
- **Grid to Mesh**
- **Distribute Points in Grid**

The code for the latter is just duplicated for now. In a later step
old node can be replaced by versioning with two new nodes.
Hans Goudey added 1 commit 2024-02-28 04:56:31 +01:00
Hans Goudey added this to the Nodes & Physics project 2024-02-28 04:57:11 +01:00
Hans Goudey added the
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Geometry Nodes
 label 2024-02-28 04:57:15 +01:00
Hans Goudey requested review from Lukas Tönne 2024-02-28 04:57:24 +01:00
Hans Goudey requested review from Jacques Lucke 2024-02-28 04:57:25 +01:00
Jacques Lucke requested changes 2024-02-28 12:36:22 +01:00
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Jacques Lucke left a comment
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I think the behavior of the Distribute Points in Grid node is a bit ambiguous currently. It's not clear what "inside" means. Does it is a density grid or sdf?

I think the behavior of the Distribute Points in Grid node is a bit ambiguous currently. It's not clear what "inside" means. Does it is a density grid or sdf?
Hans Goudey commented 2024-02-28 21:02:12 +01:00
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It's the same behavior as the existing node, so it's using the density. That's the only tool OpenVDB provides-- it's just multiplying voxel/tile values with the provided density. SDFs could be filled first by the user. This will also work on SDF grids though, it will just fill the boundary layer of voxels around the surface.

It's the same behavior as the existing node, so it's using the density. That's the only tool OpenVDB provides-- it's just multiplying voxel/tile values with the provided density. SDFs could be filled first by the user. This will also work on SDF grids though, it will just fill the boundary layer of voxels around the surface.
Jacques Lucke commented 2024-02-28 21:55:53 +01:00
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We could consider renaming the node, but if not, then that information should at least be part of the socket description.

We could consider renaming the node, but if not, then that information should at least be part of the socket description.
Hans Goudey added 3 commits 2024-02-28 22:22:02 +01:00
Hans Goudey commented 2024-02-28 22:22:14 +01:00
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Right, good point. I do like the slightly shorter name now, I added some details to the tooltip for the density input.

Right, good point. I do like the slightly shorter name now, I added some details to the tooltip for the density input.
Hans Goudey requested review from Jacques Lucke 2024-02-28 22:22:25 +01:00
Jacques Lucke approved these changes 2024-02-28 23:07:58 +01:00
Hans Goudey merged commit 860f3ed794 into main 2024-02-29 01:20:36 +01:00
Hans Goudey deleted branch geometry-nodes-grid-conversion-nodes 2024-02-29 01:20:39 +01:00
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