Proportional Editing w/ individual origins limitation #47690
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Reference: blender/blender#47690
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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}
Changed status to: 'Open'
Added subscriber: @AndrewShi
Proportional Editing falloff goes mad.to Proportional Editing w/ individual origins limitationAdded subscriber: @ideasman42
Changed status from 'Open' to: 'Archived'
Added to TODO, see: http://wiki.blender.org/index.php/Dev:Source/Development/Todo/Tools#Transform_Proportional_Editing
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.This issue was referenced by
12e681909f
Changed status from 'Archived' to: 'Resolved'