Attribute Transfer Node initial version #87421

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Dalai Felinto · 2021-04-12T14:27:13+02:00

Dalai Felinto commented

2021-04-12 14:27:13 +02:00

See big picture design: #86843

This task is focused on the implementation of an initial version of the Attribute Transfer node for the most important very basic functionality of the node.

{F9904877 size=full}

Inputs:

Geometry (Main)
Target (Base Geometry to sample attributes from)
Source (Source Attribute on target mesh, that is transferred)
Destination (Name of newly created Attribute)

Domain:

Auto (Based on Source)
Point
Edge
Face
Face Corner

Mapping:

Topology (Only for exact same topology, throw error otherwise)
Nearest (Mapping based on source Attribute's domain)
Nearest Interpolated (Nearest surface point interpolated)

For now this node just has to support mesh and pointcloud geometry. In the future this has to be updated to also work with the remaining geometry types.

See big picture design: #86843 This task is focused on the implementation of an initial version of the `Attribute Transfer` node for the most important very basic functionality of the node. {[F9904877](https://archive.blender.org/developer/F9904877/image.png) size=full} Inputs: - Geometry (Main) - Target (Base Geometry to sample attributes from) - Source (Source Attribute on target mesh, that is transferred) - Destination (Name of newly created Attribute) Domain: - Auto (Based on `Source`) - Point - Edge - Face - Face Corner Mapping: - Topology (Only for exact same topology, throw error otherwise) - Nearest (Mapping based on source Attribute's domain) - Nearest Interpolated (Nearest surface point interpolated) For now this node just has to support mesh and pointcloud geometry. In the future this has to be updated to also work with the remaining geometry types.

Dalai Felinto commented

2021-04-12 14:27:13 +02:00

Changed status from 'Needs Triage' to: 'Confirmed'

Dalai Felinto commented

2021-04-12 14:27:13 +02:00

Added subscribers: @SimonThommes, @dfelinto

Dalai Felinto changed title from ~~Attribute Transfer Node~~ to Attribute Transfer Node initial version

2021-04-12 14:27:22 +02:00

Jacques Lucke self-assigned this 2021-04-19 16:20:00 +02:00

Jacques Lucke commented

2021-04-21 11:54:11 +02:00

Notes from short discussion with @SimonThommes:

Domain:
- How to determine the distance for face/edge domains?
  - center points
  - shortest distance (much slower)
- Solution: Use center points.
Mapping:
- "Nearest Interpolated" still contains a large number of cases.
  - Need to compute distances to faces, loose edges and loose points to find the closest element.
  - Doing all these checks makes everything slower.
- Solution:
  - Just support "nearest face interpolated" mapping for now. That also means that the node can't transfer data from pointclouds yet.
  - The "nearest" mapping has lower priority. It's easier to implement, but still requires handling a couple of different cases internally (nearest edge, nearest face, ...). The first patch might not support this, but maybe it will be added while the patch is in code review if it is easy enough. Otherwise it will be added separately.

Notes from short discussion with @SimonThommes: * Domain: * How to determine the distance for face/edge domains? * center points * shortest distance (much slower) * Solution: Use center points. * Mapping: * "Nearest Interpolated" still contains a large number of cases. * Need to compute distances to faces, loose edges and loose points to find the closest element. * Doing all these checks makes everything slower. * Solution: * Just support "nearest face interpolated" mapping for now. That also means that the node can't transfer data from pointclouds yet. * The "nearest" mapping has lower priority. It's easier to implement, but still requires handling a couple of different cases internally (nearest edge, nearest face, ...). The first patch might not support this, but maybe it will be added while the patch is in code review if it is easy enough. Otherwise it will be added separately.

blender-admin commented

2021-04-27 12:56:13 +02:00

This issue was referenced by a022cffb72

This issue was referenced by a022cffb72f6f8b791c8f2ac9d7b689caa3e8839

Dalai Felinto commented

2021-05-10 14:02:17 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Dalai Felinto closed this issue

2021-05-10 14:02:17 +02:00

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Attribute Transfer Node initial version #87421