blender uses column-major matrices

Author: beverlylytle

CHANGELOG.md

@@ -19,6 +19,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Added ability of `RobotModel.add_link` to accept primitives in addition to meshes.
 * Fixed bug regarding the computation of `Joint.current_origin`.
 * Fixed bug regarding a repeated call to `RobotModel.add_joint`.
+* Fixed bug in :class:`compas_blender.RobotModelArtist.update`.
 
 ### Removed
 

src/compas_blender/artists/robotmodelartist.py

@@ -22,7 +22,7 @@ def __init__(self, model):
         super(RobotModelArtist, self).__init__(model)
 
     def transform(self, native_mesh, transformation):
-        native_mesh.matrix_world @= mathutils.Matrix(transformation.matrix)
+        native_mesh.matrix_world = mathutils.Matrix(transformation.matrix) @ native_mesh.matrix_world
 
     def create_geoemetry(self, geometry, name=None, color=None):
         # Imported colors take priority over a the parameter color