Poly Build backface issue #70055

New Issue

JuriiVolkov · 2019-09-19T07:50:33+02:00

JuriiVolkov commented

2019-09-19 07:50:33 +02:00

System Information
Operating system: Windows-7-6.1.7601-SP1 64 Bits
Graphics card: GeForce GTX 760/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.15

Blender Version
Broken: version: 2.81 (sub 12), branch: master, commit date: 2019-09-18 21:04, hash: 741d7d60ed
Worked: (optional)

Short description of error
Poly Build moves points from the back side of retopo mesh instead of extruding edges

Exact steps for others to reproduce the error

Open the file.
Try to extrude border edges of retopo mesh using Poly Build.

Poly Build .blend

**System Information** Operating system: Windows-7-6.1.7601-SP1 64 Bits Graphics card: GeForce GTX 760/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.15 **Blender Version** Broken: version: 2.81 (sub 12), branch: master, commit date: 2019-09-18 21:04, hash: `741d7d60ed` Worked: (optional) **Short description of error** Poly Build moves points from the back side of retopo mesh instead of extruding edges **Exact steps for others to reproduce the error** Open the file. Try to extrude border edges of retopo mesh using Poly Build. [Poly Build .blend](https://archive.blender.org/developer/F7757539/Poly_Build_.blend)

JuriiVolkov commented

2019-09-19 07:50:33 +02:00

Added subscriber: @JuriiVolkov

blender-admin commented

2019-09-19 07:50:33 +02:00

#91875 was marked as duplicate of this issue

blender-admin commented

2019-09-19 07:50:33 +02:00

#73206 was marked as duplicate of this issue

Jacques Lucke commented

2019-09-19 11:35:29 +02:00

Added subscriber: @JacquesLucke

Jacques Lucke commented

2019-09-19 11:35:29 +02:00

I can see the issue. I guess the solution is to never use backfacing polygons? Can you try to create a much simpler example with less geometry that shows the same issue? That would probably make fixing it easier.

JuriiVolkov commented

2019-09-21 09:00:04 +02:00

Not sure what means "to never use backfacing polygons"
If I turn backfacing off polybuild still moves only the backside
On "much simpler example with less geometry" the problem is not so obvious

Not sure what means "to never use backfacing polygons" If I turn backfacing off polybuild still moves only the backside On "much simpler example with less geometry" the problem is not so obvious

Pablo Dobarro was assigned by Brecht Van Lommel

2019-10-03 00:18:53 +02:00

Pablo Dobarro commented

2019-10-03 01:07:16 +02:00

This needs D5919 to update the preselection code of the Polybuild tool to use the occluded selection buffer

This needs [D5919](https://archive.blender.org/developer/D5919) to update the preselection code of the Polybuild tool to use the occluded selection buffer

Pablo Dobarro was unassigned by Dalai Felinto

2019-12-23 13:50:07 +01:00

Dalai Felinto commented

2019-12-23 13:50:07 +01:00

Added subscriber: @PabloDobarro

Pablo Dobarro commented

2020-01-10 22:37:21 +01:00

Changed status from 'Confirmed' to: 'Archived'

Pablo Dobarro closed this issue

2020-01-10 22:37:21 +01:00

Pablo Dobarro self-assigned this 2020-01-10 22:37:21 +01:00

Pablo Dobarro commented

2020-01-10 22:37:21 +01:00

There are no bugs in the implementation of the Polybuild selection related to backfacing. The current version works like that by design (it is a bad design, but it needs the retopology overlay in D5919 to improve it). So I don't consider this a bug, but a feature that still needs to be implemented. After using the retopology overlay it should select only visible geometry so it will be usable for retopology.

There are no bugs in the implementation of the Polybuild selection related to backfacing. The current version works like that by design (it is a bad design, but it needs the retopology overlay in [D5919](https://archive.blender.org/developer/D5919) to improve it). So I don't consider this a bug, but a feature that still needs to be implemented. After using the retopology overlay it should select only visible geometry so it will be usable for retopology.

Pablo Dobarro commented

2020-01-18 02:46:55 +01:00

Added subscriber: @NahuelBelich

Pratik Borhade commented

2021-10-05 10:44:14 +02:00

Added subscribers: @Zunio, @PratikPB2123

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Poly Build backface issue #70055