Convert slopes to vertex group weights #36677

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Michel Anders · 2013-09-06T20:39:06+02:00

Michel Anders commented

2013-09-06 20:39:06 +02:00

Project: Blender Extensions
Tracker: Py Scripts Upload
Blender: 2.66
Category: Mesh
Python: 3.2
Homepage: http://blenderthings.blogspot.nl/2013/09/slope-to-vertex-weights-blender-add.html
Script name: slope2vgroup
Author(s): Michel Anders (varkenvarken)
Status: Open

%%%Addon to convert slope (angle between vertex normal and object space z-axis) to vertex weights. Its purpose is to facilitate distributing particles preferentially to relatively flat parts of a mesh.

workflow:

select object (inobject mode)
click 3dview -> object -> slope2vgroup

it will replace the vertex weights of the active vertex group or create a vertex group if none is present yet.

Then add particle system as you normally would and select the vertexgroup in the density field

%%%

**Project**: Blender Extensions **Tracker**: Py Scripts Upload **Blender**: 2.66 **Category**: Mesh **Python**: 3.2 **Homepage**: http://blenderthings.blogspot.nl/2013/09/slope-to-vertex-weights-blender-add.html **Script name**: slope2vgroup **Author(s)**: Michel Anders (varkenvarken) **Status**: Open %%%Addon to convert slope (angle between vertex normal and object space z-axis) to vertex weights. Its purpose is to facilitate distributing particles preferentially to relatively flat parts of a mesh. workflow: - select object (inobject mode) - click 3dview -> object -> slope2vgroup it will replace the vertex weights of the active vertex group or create a vertex group if none is present yet. Then add particle system as you normally would and select the vertexgroup in the density field %%%

Michel Anders commented

2013-09-06 20:39:06 +02:00

Changed status to: 'Open'

Michel Anders commented

2013-09-07 16:44:20 +02:00

%%%now has dual functionality

3dview -> Weights -> Slope will create/replace active vertex group weights
3dview -> Paint -> Slope will create/replace active vertex color layer (red channel)

Has now 4 options

low : slopes with lower angle than this will receive a unit value
high : slopes with steeper angle than this will receive a zero value
power: influences the shape of the mapping curve
mirror: maps slope angles > 90 to 180 - angle
%%%

%%%now has dual functionality 3dview -> Weights -> Slope will create/replace active vertex group weights 3dview -> Paint -> Slope will create/replace active vertex color layer (red channel) Has now 4 options low : slopes with lower angle than this will receive a unit value high : slopes with steeper angle than this will receive a zero value power: influences the shape of the mapping curve mirror: maps slope angles > 90 to 180 - angle %%%

Michel Anders commented

2013-09-13 09:55:37 +02:00

%%%v0.0.3 adds mirror option and the possibility to map the brush curve in vertex paint mode%%%

Michel Anders commented

2013-09-13 21:14:53 +02:00

%%%v0.0.4 adds possibility to calc slope in either worldspace or object space coordinates in both vcol and vweight modes. vcol mode now produces grey scale values for the slope unless normal map is checked in which case the x,y,z components are simply mapped to the r,g,b component of the vcol layer.
%%%

%%%v0.0.4 adds possibility to calc slope in either worldspace or object space coordinates in both vcol and vweight modes. vcol mode now produces grey scale values for the slope unless normal map is checked in which case the x,y,z components are simply mapped to the r,g,b component of the vcol layer. %%%

Brendon Murphy commented

2015-09-12 13:31:55 +02:00

Added subscriber: @BrendonMurphy

Brendon Murphy commented

2015-09-12 13:31:55 +02:00

Changed status from 'Open' to: 'Archived'

Brendon Murphy closed this issue

2015-09-12 13:31:55 +02:00

Brendon Murphy self-assigned this 2015-09-12 13:31:55 +02:00

Brendon Murphy commented

2015-09-12 13:31:55 +02:00

Closing as archived.
@MichelAnders
Feel free to create a fresh task if you intend developing this in Blender. It would be nice to some of this functionality in ant landscape.

Closing as archived. @MichelAnders Feel free to create a fresh task if you intend developing this in Blender. It would be nice to some of this functionality in ant landscape.

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Convert slopes to vertex group weights #36677