Proportional Editing w/ individual origins limitation #47690

Closed
opened 2016-03-04 20:47:02 +01:00 by Andrew · 9 comments

System Information
Operating system and graphics card
Windows 7, Nvidia 750ti

Blender Version
Broken: 2.75 2.76 2.77 RC1
Worked: none

Short description of error
Weird result with proportional editing tool.

Exact steps for others to reproduce the error
Open planes.blend file, go in edit mode, scale the points and adjust the proportional editing tool's falloff to be quite large. You will see the planes do not scales properly. This happen only when pivot point is set to individual origins, with large proportional falloff and when lots of objects are in use.
As example this bug makes not possible tweaking multiple roots/tips of poly hair strips.
{F287651}2.png

**System Information** Operating system and graphics card Windows 7, Nvidia 750ti **Blender Version** Broken: 2.75 2.76 2.77 RC1 Worked: none **Short description of error** Weird result with proportional editing tool. **Exact steps for others to reproduce the error** Open [planes.blend](https://archive.blender.org/developer/F287648/planes.blend) file, go in edit mode, scale the points and adjust the proportional editing tool's falloff to be quite large. You will see the planes do not scales properly. This happen only when pivot point is set to individual origins, with large proportional falloff and when lots of objects are in use. As example this bug makes not possible tweaking multiple roots/tips of poly hair strips. {[F287651](https://archive.blender.org/developer/F287651/1.png)}![2.png](https://archive.blender.org/developer/F287653/2.png)
Author

Changed status to: 'Open'

Changed status to: 'Open'
Author

Added subscriber: @AndrewShi

Added subscriber: @AndrewShi
Campbell Barton changed title from Proportional Editing falloff goes mad. to Proportional Editing w/ individual origins limitation 2016-03-07 22:22:37 +01:00

Added subscriber: @ideasman42

Added subscriber: @ideasman42

Changed status from 'Open' to: 'Archived'

Changed status from 'Open' to: 'Archived'
Campbell Barton self-assigned this 2016-03-08 01:28:50 +01:00
Added to TODO, see: http://wiki.blender.org/index.php/Dev:Source/Development/Todo/Tools#Transform_Proportional_Editing

Added subscriber: @mano-wii

Added subscriber: @mano-wii

I took a look at this bug, and the resolution is quite complicated.
To register (for future resolution), The problem involves the following functions:

  • editmesh_set_connectivity_distance - this function applies a distance factor for each vertex, tracing the smallest path between selected and unselected visible elements;
  • Editmesh_islands_info_calc - this function tells us what are the islands of selected elements. It indicates where is the pivot of each island;
  • set_prop_dist - this function calculates the linear distance "from not-selected vertex to nearest selected vertex" (it does not override the distance previously obtained). If we use proportional connected, it takes the pivot of rotation of the nearest selected element;
  • (calculatePropRatio- transforms distance values into a transformation factor;)

To solve this bug, the set_prop_dist function should ignore the selected vertices that are not connected to the unselected vertices. For this it would be necessary to create a new index mask indicating whith vertices participate in the same loose part.

I took a look at this bug, and the resolution is quite complicated. To register (for future resolution), The problem involves the following functions: - `editmesh_set_connectivity_distance` - this function applies a distance factor for each vertex, tracing the smallest path between selected and unselected visible elements; - `Editmesh_islands_info_calc` - this function tells us what are the islands of selected elements. It indicates where is the pivot of each island; - `set_prop_dist` - this function calculates the linear distance "from not-selected vertex to nearest selected vertex" (it does not override the distance previously obtained). If we use proportional connected, it takes the pivot of rotation of the nearest selected element; - (`calculatePropRatio`- transforms distance values into a transformation factor;) To solve this bug, the `set_prop_dist` function should ignore the selected vertices that are not connected to the unselected vertices. For this it would be necessary to create a new index mask indicating whith vertices participate in the same loose part.

This issue was referenced by 12e681909f

This issue was referenced by 12e681909ffb64bf32cca00c86363d2685fd50c6

Changed status from 'Archived' to: 'Resolved'

Changed status from 'Archived' to: 'Resolved'
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Reference: blender/blender#47690
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