Selection not snapping to mesh generated from curves with modifiers #65133

New Issue

Juan Gea · 2019-05-26T00:17:35+02:00

Juan Gea commented

2019-05-26 00:17:35 +02:00

System Information
Operating system: Linux-5.0.0-15-generic-x86_64-with-debian-buster-sid 64 Bits
Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.14

Blender Version
Broken: version: 2.80 (sub 72), branch: boneMaster, commit date: 2019-05-25 12:12, hash: c2f2eb49e5
Worked: (optional)
(It's a custom branch, but totally based on today's master code and modifying only a few things for cycles, nothing to do with this, so this can be reproduced with master too)

Short description of error
Snap to vertice is not snapping to vertices in geometry created by modifiers in curves

Exact steps for others to reproduce the error
1.- Create a cube
2.- Set snap settings to "vertice"
3.- in a different place generate a circle curve
4.- configure the circle curve to 2D and enable "Fill Mode" = Front
5.- Add a solidify modifier and give it a value so a cilynder is generated
6.- Try to snap the cube to any vertex of the geometry, any vertex that is not part of the actual curve
7.- The geometry will be ignored so it impossible to snap anything to it without converting the curve to mesh

**System Information** Operating system: Linux-5.0.0-15-generic-x86_64-with-debian-buster-sid 64 Bits Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.14 **Blender Version** Broken: version: 2.80 (sub 72), branch: boneMaster, commit date: 2019-05-25 12:12, hash: `c2f2eb49e5` Worked: (optional) (It's a custom branch, but totally based on today's master code and modifying only a few things for cycles, nothing to do with this, so this can be reproduced with master too) **Short description of error** Snap to vertice is not snapping to vertices in geometry created by modifiers in curves **Exact steps for others to reproduce the error** 1.- Create a cube 2.- Set snap settings to "vertice" 3.- in a different place generate a circle curve 4.- configure the circle curve to 2D and enable "Fill Mode" = Front 5.- Add a solidify modifier and give it a value so a cilynder is generated 6.- Try to snap the cube to any vertex of the geometry, any vertex that is not part of the actual curve 7.- The geometry will be ignored so it impossible to snap anything to it without converting the curve to mesh

Juan Gea commented

2019-05-26 00:17:35 +02:00

Added subscriber: @juang3d

Brecht Van Lommel commented

2019-05-29 01:47:31 +02:00

Added subscribers: @mano-wii, @brecht

Brecht Van Lommel commented

2019-05-29 01:47:31 +02:00

@mano-wii, one you could check perhaps?

Germano Cavalcante commented

2019-05-29 04:41:46 +02:00

Blender never had support for snapping to surfaces generated from curves (or any displist object).
This is a feature to add and needs a lot of code engagement. (It would be necessary to create bvhtree for displists, save in cache, create snap functions for this type of object and callbacks for the new bvhtree).
I've never focused on this limitation because in my opinion there are other issues that still need attention in this area of snapping.

Blender never had support for snapping to surfaces generated from curves (or any displist object). This is a feature to add and needs a lot of code engagement. (It would be necessary to create bvhtree for displists, save in cache, create snap functions for this type of object and callbacks for the new bvhtree). I've never focused on this limitation because in my opinion there are other issues that still need attention in this area of snapping.

Bastien Montagne commented

2019-05-29 10:22:39 +02:00

Added subscriber: @mont29

Bastien Montagne commented

2019-05-29 10:22:39 +02:00

Changed status from 'Open' to: 'Archived'

Bastien Montagne closed this issue

2019-05-29 10:22:39 +02:00

Bastien Montagne self-assigned this 2019-05-29 10:22:39 +02:00

Bastien Montagne commented

2019-05-29 10:22:39 +02:00

Archiving then, thanks for the report, but this is a known limitation/TODO, not a bug.

Juan Gea commented

2019-05-29 16:51:24 +02:00

Thanks @mont29 , understood :)

@mano-wii well, right now this is a pretty important feature, I'm not sure what areas do you think that need more attention in snapping, could be great to know :) (really, no pun intented) but a common workflow in any software is to snap things to curves, since for example CAD data come in curve form and some parts of a CAD model may be constructed based on the CAD curve to allow an easy iteration.

Would be possible to add a modifier to those curves so they are internally converted to mesh for this purpose without breaking all the handlers and other curve settings? Like a CurveSurfaceToMesh modifier that will serve to allow this kind of things?

Thanks for the analysis anyway! :)

Cheers!

Thanks @mont29 , understood :) @mano-wii well, right now this is a pretty important feature, I'm not sure what areas do you think that need more attention in snapping, could be great to know :) (really, no pun intented) but a common workflow in any software is to snap things to curves, since for example CAD data come in curve form and some parts of a CAD model may be constructed based on the CAD curve to allow an easy iteration. Would be possible to add a modifier to those curves so they are internally converted to mesh for this purpose without breaking all the handlers and other curve settings? Like a CurveSurfaceToMesh modifier that will serve to allow this kind of things? Thanks for the analysis anyway! :) Cheers!

Germano Cavalcante commented

2019-05-29 18:56:56 +02:00

Whatever the modifier, it generates a mesh. But this mesh was not being used for snap.
Comitted 9dafc8ee2c for this case ;)

Whatever the modifier, it generates a mesh. But this mesh was not being used for snap. Comitted 9dafc8ee2c for this case ;)

Juan Gea commented

2019-06-03 17:08:30 +02:00

THANKS A LOT!!!!!

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Selection not snapping to mesh generated from curves with modifiers #65133