Fix bug of vertexcolor

CHANGELOG.md

@@ -10,7 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 ### Changed
-
+* Fixed bug [#212](https://github.com/compas-dev/compas_view2/issues/212).
 ### Removed
 
 

docs/conf.py

@@ -137,6 +137,7 @@ def setup(app):
         "image_dark": "_static/compas_icon_white.png",  # relative to parent of conf.py
         "text": project,
     },
+    "announcement": "This is the achieve documentation for the COMPAS_View2 for compas<=1.17.9. The next generation of the viewer for compas>2 is available <a href='https://compas.dev/compas_viewer/latest/'>here</a>.",
 }
 
 html_context = {

src/compas_view2/objects/meshobject.py

@@ -180,9 +180,9 @@ def _frontfaces_data(self):
                     positions.append(b)
                     positions.append(c)
                     if self.use_vertex_color:
-                        colors.append(vertex_color[a])
-                        colors.append(vertex_color[b])
-                        colors.append(vertex_color[c])
+                        colors.append(vertex_color[vertices[0]])
+                        colors.append(vertex_color[vertices[1]])
+                        colors.append(vertex_color[vertices[2]])
                     else:
                         colors.append(color)
                         colors.append(color)
@@ -254,9 +254,9 @@ def _backfaces_data(self):
                     positions.append(b)
                     positions.append(c)
                     if self.use_vertex_color:
-                        colors.append(vertex_color[a])
-                        colors.append(vertex_color[b])
-                        colors.append(vertex_color[c])
+                        colors.append(vertex_color[vertices[0]])
+                        colors.append(vertex_color[vertices[1]])
+                        colors.append(vertex_color[vertices[2]])
                     else:
                         colors.append(color)
                         colors.append(color)