register artists only once

Author: tomvanmele

src/compas_ghpython/artists/__init__.py

@@ -111,19 +111,25 @@ def verify_gh_context():
         return False
 
 
+artists_registered = False
+
+
 @plugin(category='factories', pluggable_name='new_artist', requires=['ghpythonlib', verify_gh_context])
 def new_artist_gh(cls, *args, **kwargs):
     # "lazy registration" seems necessary to avoid item-artist pairs to be overwritten unintentionally
-
-    GHArtist.register(Circle, CircleArtist)
-    GHArtist.register(Frame, FrameArtist)
-    GHArtist.register(Line, LineArtist)
-    GHArtist.register(Point, PointArtist)
-    GHArtist.register(Polyline, PolylineArtist)
-    GHArtist.register(Mesh, MeshArtist)
-    GHArtist.register(Network, NetworkArtist)
-    GHArtist.register(VolMesh, VolMeshArtist)
-    GHArtist.register(RobotModel, RobotModelArtist)
+    global artists_registered
+
+    if not artists_registered:
+        GHArtist.register(Circle, CircleArtist)
+        GHArtist.register(Frame, FrameArtist)
+        GHArtist.register(Line, LineArtist)
+        GHArtist.register(Point, PointArtist)
+        GHArtist.register(Polyline, PolylineArtist)
+        GHArtist.register(Mesh, MeshArtist)
+        GHArtist.register(Network, NetworkArtist)
+        GHArtist.register(VolMesh, VolMeshArtist)
+        GHArtist.register(RobotModel, RobotModelArtist)
+        artists_registered = True
 
     data = args[0]
 

src/compas_plotters/artists/__init__.py

@@ -71,19 +71,34 @@
 from .networkartist import NetworkArtist
 
 
-@plugin(category='factories', pluggable_name='new_artist', trylast=True, requires=['matplotlib'])
+def verify_not_blender():
+    try:
+        import bpy  # noqa: F401
+    except ImportError:
+        return True
+    else:
+        return False
+
+
+artists_registered = False
+
+
+@plugin(category='factories', pluggable_name='new_artist', trylast=True, requires=['matplotlib', verify_not_blender])
 def new_artist_plotter(cls, *args, **kwargs):
     # "lazy registration" seems necessary to avoid item-artist pairs to be overwritten unintentionally
-
-    PlotterArtist.register(Point, PointArtist)
-    PlotterArtist.register(Vector, VectorArtist)
-    PlotterArtist.register(Line, LineArtist)
-    PlotterArtist.register(Polyline, PolylineArtist)
-    PlotterArtist.register(Polygon, PolygonArtist)
-    PlotterArtist.register(Circle, CircleArtist)
-    PlotterArtist.register(Ellipse, EllipseArtist)
-    PlotterArtist.register(Mesh, MeshArtist)
-    PlotterArtist.register(Network, NetworkArtist)
+    global artists_registered
+
+    if not artists_registered:
+        PlotterArtist.register(Point, PointArtist)
+        PlotterArtist.register(Vector, VectorArtist)
+        PlotterArtist.register(Line, LineArtist)
+        PlotterArtist.register(Polyline, PolylineArtist)
+        PlotterArtist.register(Polygon, PolygonArtist)
+        PlotterArtist.register(Circle, CircleArtist)
+        PlotterArtist.register(Ellipse, EllipseArtist)
+        PlotterArtist.register(Mesh, MeshArtist)
+        PlotterArtist.register(Network, NetworkArtist)
+        artists_registered = True
 
     data = args[0]
 

src/compas_rhino/artists/__init__.py

@@ -152,6 +152,9 @@ def verify_rhino_context():
         return False
 
 
+artists_registered = False
+
+
 @plugin(category='drawing-utils', pluggable_name='clear', requires=['Rhino', verify_rhino_context])
 def clear_rhino():
     compas_rhino.clear()
@@ -165,26 +168,29 @@ def redraw_rhino():
 @plugin(category='factories', pluggable_name='new_artist', requires=['Rhino', verify_rhino_context])
 def new_artist_rhino(cls, *args, **kwargs):
     # "lazy registration" seems necessary to avoid item-artist pairs to be overwritten unintentionally
-
-    RhinoArtist.register(Circle, CircleArtist)
-    RhinoArtist.register(Frame, FrameArtist)
-    RhinoArtist.register(Line, LineArtist)
-    RhinoArtist.register(Plane, PlaneArtist)
-    RhinoArtist.register(Point, PointArtist)
-    RhinoArtist.register(Polygon, PolygonArtist)
-    RhinoArtist.register(Polyline, PolylineArtist)
-    RhinoArtist.register(Vector, VectorArtist)
-    RhinoArtist.register(Box, BoxArtist)
-    RhinoArtist.register(Capsule, CapsuleArtist)
-    RhinoArtist.register(Cone, ConeArtist)
-    RhinoArtist.register(Cylinder, CylinderArtist)
-    RhinoArtist.register(Polyhedron, PolyhedronArtist)
-    RhinoArtist.register(Sphere, SphereArtist)
-    RhinoArtist.register(Torus, TorusArtist)
-    RhinoArtist.register(Mesh, MeshArtist)
-    RhinoArtist.register(Network, NetworkArtist)
-    RhinoArtist.register(VolMesh, VolMeshArtist)
-    RhinoArtist.register(RobotModel, RobotModelArtist)
+    global artists_registered
+
+    if not artists_registered:
+        RhinoArtist.register(Circle, CircleArtist)
+        RhinoArtist.register(Frame, FrameArtist)
+        RhinoArtist.register(Line, LineArtist)
+        RhinoArtist.register(Plane, PlaneArtist)
+        RhinoArtist.register(Point, PointArtist)
+        RhinoArtist.register(Polygon, PolygonArtist)
+        RhinoArtist.register(Polyline, PolylineArtist)
+        RhinoArtist.register(Vector, VectorArtist)
+        RhinoArtist.register(Box, BoxArtist)
+        RhinoArtist.register(Capsule, CapsuleArtist)
+        RhinoArtist.register(Cone, ConeArtist)
+        RhinoArtist.register(Cylinder, CylinderArtist)
+        RhinoArtist.register(Polyhedron, PolyhedronArtist)
+        RhinoArtist.register(Sphere, SphereArtist)
+        RhinoArtist.register(Torus, TorusArtist)
+        RhinoArtist.register(Mesh, MeshArtist)
+        RhinoArtist.register(Network, NetworkArtist)
+        RhinoArtist.register(VolMesh, VolMeshArtist)
+        RhinoArtist.register(RobotModel, RobotModelArtist)
+        artists_registered = True
 
     data = args[0]