rhino implementation for clear and redraw

Author: tomvanmele

src/compas_rhino/artists/__init__.py

@@ -102,6 +102,7 @@
 from compas.datastructures import VolMesh
 
 from compas.robots import RobotModel
+import compas_rhino
 
 from .artist import RhinoArtist
 from .circleartist import CircleArtist
@@ -151,6 +152,16 @@ def verify_rhino_context():
         return False
 
 
+@plugin(category='drawing-utils', pluggable_name='clear', requires=['Rhino', verify_rhino_context])
+def clear_rhino():
+    compas_rhino.clear()
+
+
+@plugin(category='drawing-utils', pluggable_name='redraw', requires=['Rhino', verify_rhino_context])
+def redraw_rhino():
+    compas_rhino.redraw()
+
+
 @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