fixed creation of color chains

molecularnodes/__init__.py

@@ -16,7 +16,7 @@
     "author"      : "Brady Johnston",
     "description" : "Toolbox for molecular animations in Blender & Geometry Nodes.",
     "blender"     : (4, 0, 0),
-    "version"     : (4, 0, 1),
+    "version"     : (4, 0, 2),
     "location"    : "Scene Properties -> Molecular Nodes",
     "warning"     : "",
     "doc_url"     : "https://bradyajohnston.github.io/MolecularNodes/",

molecularnodes/blender/nodes.py

@@ -651,7 +651,7 @@ def chain_color(name, input_list, label_prefix = "Chain ", field = "chain_id", s
     the chain_id named attribute to manually set the colours for each of the chains.
     """
 
-    group = new_group(name)
+    group = new_group(name, geometry=False)
     link = group.links.new
 
     # create a named attribute node that gets the chain_number attribute

molecularnodes/ui/ops.py

@@ -73,7 +73,7 @@ class MN_OT_Color_Custom(bpy.types.Operator):
     description: bpy.props.StringProperty(name = "description", default = "")
 
     node_name: bpy.props.StringProperty(name = "node_name", default = "")
-    node_property: bpy.props.StringProperty(name = "node_property", default = "")
+    node_property: bpy.props.StringProperty(name = "node_property", default = "chain_id_unique")
     field: bpy.props.StringProperty(name = "field", default = "chain_id")
     prefix: bpy.props.StringProperty(name = "prefix", default = "Chain")
     starting_value: bpy.props.IntProperty(name = "starting_value", default = 0)
@@ -86,7 +86,7 @@ def execute(self, context):
         obj = context.active_object
         # try:
         node_color = nodes.chain_color(
-            node_name = f"MN_color_{self.node_name}_{obj.name}", 
+            name = f"MN_color_{self.node_name}_{obj.name}", 
             input_list = obj[self.node_property], 
             field = self.field, 
             label_prefix= self.prefix, 

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "molecularnodes"
-version = "4.0.1"
+version = "4.0.2"
 description = "Toolbox for molecular animations with Blender and Geometry Nodes."
 authors = ["Brady Johnston <[email protected]>"]
 license = "MIT"

tests/test_nodes.py

@@ -6,7 +6,7 @@
 import tempfile
 
 from . import utils
-from .constants import codes
+from .constants import codes, test_data_directory
 random.seed(6)
 
 
@@ -65,3 +65,13 @@ def test_custom_resid_selection():
         if item.in_out == "INPUT":
             assert item.default_value == numbers[counter]
             counter += 1
+
+def test_op_custom_color():
+    mol = mn.io.local.load(test_data_directory / '1cd3.cif')
+    mol.select_set(True)
+    group = mn.blender.nodes.chain_color(f'MN_color_chain_{mol.name}', input_list=mol['chain_id_unique'])
+
+    assert group
+    assert group.interface.items_tree['Chain G'].name == 'Chain G'
+    assert group.interface.items_tree[-1].name == 'Chain G'
+    assert group.interface.items_tree[0].name == 'Color'