Object.matrix_world does not account for bone parents #38016

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Tom Edwards · 2014-01-01T17:41:29+01:00

Tom Edwards commented

2014-01-01 17:41:29 +01:00

System Information
Win7 x64

Blender Version
Broken: 2.66 (r55078)
Worked: unknown

Short description of error

When setting the value of matrix_world on an object with a bone parent, the matrix of the bone parent is not taken into account. This leads to the object being positioned relative to the tail of its parent bone instead of the world.

Exact steps for others to reproduce the error

Open bone_parent_matrix.blend
Run the script

The object will change position, even though the script is only performing o.matrix_world = o.matrix_world.

**System Information** Win7 x64 **Blender Version** Broken: 2.66 (r55078) Worked: unknown **Short description of error** When setting the value of `matrix_world` on an object with a bone parent, the matrix of the bone parent is not taken into account. This leads to the object being positioned relative to the tail of its parent bone instead of the world. **Exact steps for others to reproduce the error** - Open [bone_parent_matrix.blend](https://archive.blender.org/developer/F60157/bone_parent_matrix.blend) - Run the script The object will change position, even though the script is only performing `o.matrix_world = o.matrix_world`.

Tom Edwards commented

2014-01-01 17:41:29 +01:00

Changed status to: 'Open'

Campbell Barton was assigned by Tom Edwards

2014-01-01 17:41:29 +01:00

Tom Edwards commented

2014-01-01 17:41:29 +01:00

Added subscriber: @artfunkel