Snap to face projection - Entire mesh is affected by projection when Proportional Editing mode is active, regardless of influence radius #34244

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Bjørnar Frøyse · 2013-02-14T17:30:27+01:00

Bjørnar Frøyse commented

2013-02-14 17:30:27 +01:00

%%%Windows 7, Nvidia GeForce GTX 560 Ti

Bug is present in 2.66 RC and 2.65.

Last working official version was 2.64.

Current buggy behaviour:
In editmode, when using snap to face, with projection and Proportional Editing mode (PE) active, the projection is done on the entire mesh, regardless of PE radius.

Expected behaviour (2.64):
When using projection and PE together, projection should only be applied to vertices inside the PE radius. Vertices outside the radius should be ignored.

Steps to repeat the problem in the attached file:

Make sure you're in edit mode with Proportional Editing mode active.
Make sure snapping is enabled and set to Face, with projection also activated, like in this image: http://i.imgur.com/EJJbKWU.png
Select a vertex in the object called "Mesh to be projected" and move it over the surface of the sphere called "Projection target".
Adjust PE radius by scrolling the mouse wheel while moving the vertex.
Observe the entire mesh being projected, even if PE radius is nearly zero.

This makes it very cumbersome to use PE when doing retopology work. Especially annoying when using it on a mesh that completely wraps around another, as it will cause vertices on the back side to be projected to the front.
It used to be a big time saver, but was broken sometime after 2.64. Does not work in 2.65 or 2.66.

Thanks :)%%%

%%%Windows 7, Nvidia GeForce GTX 560 Ti Bug is present in 2.66 RC and 2.65. Last working official version was 2.64. Current buggy behaviour: In editmode, when using snap to face, with projection and Proportional Editing mode (PE) active, the projection is done on the entire mesh, regardless of PE radius. Expected behaviour (2.64): When using projection and PE together, projection should only be applied to vertices inside the PE radius. Vertices outside the radius should be ignored. Steps to repeat the problem in the attached file: 1. Make sure you're in edit mode with Proportional Editing mode active. 2. Make sure snapping is enabled and set to Face, with projection also activated, like in this image: http://i.imgur.com/EJJbKWU.png 3. Select a vertex in the object called "Mesh to be projected" and move it over the surface of the sphere called "Projection target". 4. Adjust PE radius by scrolling the mouse wheel while moving the vertex. 5. Observe the entire mesh being projected, even if PE radius is nearly zero. This makes it very cumbersome to use PE when doing retopology work. Especially annoying when using it on a mesh that completely wraps around another, as it will cause vertices on the back side to be projected to the front. It used to be a big time saver, but was broken sometime after 2.64. Does not work in 2.65 or 2.66. Thanks :)%%%

Bjørnar Frøyse commented

2013-02-14 17:30:27 +01:00

Changed status to: 'Open'

Moolah Nasreddin commented

2013-02-15 01:27:16 +01:00

%%%I've seen some another trouble with the face projection snapping:
When the vert's you're going to project are in the same mesh there is a trouble:

(snap_to_faces_01.blend)

hover the mouse somewhere over the selected face
press G,
press Ctrl...
and the face snaps to mouse by the closest vertex!

By all technical logic it's expected just to be projected on the underlying face(s) of this mesh.

I'm not sure that was by the design. And without "snap to other objects" checked it works like this. BUT in a workflow it's often necessary to show other objects while doing face snapping operations WITHOUT snapping to other objects (so I mean I must leave it unchecked). I didn't thought out this thing because that was a case of my modelling work.
I've just decided to "forget" about this and to delay before an emergence of some report close to my problem (b'coz it's not too crucial). I mean it's like a "combo" :) Two issues of one area.

And another issue that in some cases (when a surface to be projected on is not parallel to the view)... not simple cases... the projecting occurs wrong.. with some shift. I remember it's a side shift. Sorry, I can't recall that it was better before some version but I remember that it WAS better.. maybe in 2.5. I'm not sure. If you're going to touch this theme then I'll dig into this problem and I'll find a concrete case when I've got this issue.%%%

%%%I've seen some another trouble with the face projection snapping: When the vert's you're going to project are in the same mesh there is a trouble: (snap_to_faces_01.blend) - hover the mouse somewhere over the selected face - press G, - press Ctrl... - and the face snaps to mouse by the closest vertex! By all technical logic it's expected just to be projected on the underlying face(s) of this mesh. I'm not sure that was by the design. And without "snap to other objects" checked it works like this. BUT in a workflow it's often necessary to show other objects while doing face snapping operations WITHOUT snapping to other objects (so I mean I must leave it unchecked). I didn't thought out this thing because that was a case of my modelling work. I've just decided to "forget" about this and to delay before an emergence of some report close to my problem (b'coz it's not too crucial). I mean it's like a "combo" :) Two issues of one area. And another issue that in some cases (when a surface to be projected on is not parallel to the view)... not simple cases... the projecting occurs wrong.. with some shift. I remember it's a side shift. Sorry, I can't recall that it was better before some version but I remember that it WAS better.. maybe in 2.5. I'm not sure. If you're going to touch this theme then I'll dig into this problem and I'll find a concrete case when I've got this issue.%%%

Campbell Barton commented

2013-02-19 17:36:09 +01:00

%%%Checking on a fix%%%

Campbell Barton commented

2013-02-19 18:04:36 +01:00

%%%fixed r54675.

@Moolah. You are raising 2 unrelated issues in this report (Nothing to do with snapping failing in proportional edit-mode).

The first point you make is intended behavior from what I can tell, even if you think its not ideal.

The second issue you don't give enough explanation for a developer to redo.

If you are sure these are bugs, please open separate reports.

closing.%%%

%%%fixed r54675. @Moolah. You are raising 2 unrelated issues in this report (Nothing to do with snapping failing in proportional edit-mode). The first point you make is intended behavior from what I can tell, even if you think its not ideal. The second issue you don't give enough explanation for a developer to redo. If you are sure these are bugs, please open separate reports. closing.%%%

Campbell Barton commented

2013-02-19 18:04:49 +01:00

Changed status from 'Open' to: 'Resolved'

Campbell Barton closed this issue

2013-02-19 18:04:49 +01:00

Moolah Nasreddin commented

2013-02-20 12:09:25 +01:00

%%%@Campbell. Thank you! I got. I'll make the reports when I'll be closer to this issue.%%%

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Snap to face projection - Entire mesh is affected by projection when Proportional Editing mode is active, regardless of influence radius #34244