What does face color denote in viewport in edit mode?

Support Modeling
1

Basically the question is: why do I have some of the faces with different color in portview when I switch to edit mode?

oBNu41H.png760×788 76.9 KB

The object was actually separated from the bigger object.

2

Maybe double geometry and inverted normals.

3

I’ve flipped all the normals outwards, but it definitely can be double geometry.

Thanks!

4

Not sure what it was actually, but I’ve fixed it :smiley:
I was doing manipulation on mesh with a script with a bmesh module, namely selecting part of the object and separating it from the object. For some reason calling from_mesh after the object was separated in my bmesh object wasn’t enough, and apparently I was selecting faces from bmesh for separation, which were already removed from object itself, so it kinda caused some mad invalid faces duplication into multiple objects :smiley:

So I actually replaced the code with a deletion of my bmesh, creating new bmesh and calling from_mesh again. Not sure how relevant python code for this forum, but I’ll still post a solution.

Old code, that caused this issue was:


        bpy.ops.object.mode_set(mode = 'EDIT')
        bpy.ops.mesh.separate(type='SELECTED')
        mesh.from_mesh(obj)

I’ve changed to:


        bpy.ops.object.mode_set(mode = 'EDIT')
        bpy.ops.mesh.separate(type='SELECTED')

        del mesh
        mesh = bmesh.new()
        mesh.from_mesh(obj)

In any case, thaks, JA12, your comment about duplicate geometry has set me on the right course :smiley: