In Blender when assigning custom properties to vertices using the bmesh layer system, this data can then be accessed directly from the object, through its attributes.
.blend file on Patreon
As an example, let’s assign a custom property of the integer type to the vertices of the currently active object.
Load the active mesh data into bmesh. And use bmesh to create an int-type layer for the vertices. Set each vertex on this layer to a random value of 0 or 1 and dump the data back to the object.
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obj_data = bpy.context.object.data bm = bmesh.from_edit_mesh(obj_data) vert_layer = bm.verts.layers.int.new('vert_layer') for v in bm.verts: v[vert_layer] = randint(0, 1) bmesh.update_edit_mesh(obj_data) |
If we look at the object’s attribute list, we will see a new attribute named “vert_layer”. This is exactly the name we used when creating the bmesh layer.
We can get custom vertices values set through the bmesh layer using this attribute.
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[attr.value for attr in bpy.context.object.data.attributes['vert_layer'].data] # [0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, ... 1, 0] |
Let’s select vertices for which our custom property is set to 1.
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values = [attr.value for attr in bpy.context.object.data.attributes['vert_layer'].data] bpy.context.object.data.vertices.foreach_set('select', values) |
We will get the following result:
