Assign vertex color to multiple objects

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1

Hi, I often need to assign some vertex colors to many objects in the scene.
2.8 allows for multi editing but vertex painting doesn’t work that way.
I don’t need to paint I just need to assign single color to a set of objects so that I don’t have to do that individually or merge objects into one…

Thanks for any help

2

This sets vertex colors for all objects based on the active object. If you want to pick a manual color for whole selection, set color_from_active to False and set the color you want.

from bpy import context

def color_from_active():
    active = context.active_object
    selection = context.selected_objects
    objs = [o for o in selection if not o is active and o.type == 'MESH']
    
    if not objs or not 'OBJECT' in context.mode:
        print("No selection")
        return

    # set to True to use color from active (assumes any vertex is colored)
    color_from_active = True

    # or use a solid color (r,g,b,a)
    color = [0,0,1,1]

    if color_from_active:
        if active.data.vertex_colors:
            v_col = active.data.vertex_colors[0]
            color = list(v_col.data[0].color)
    else:
        objs.append(active)
            
    if objs:
        for o in objs:
            if not o.data.vertex_colors:
                v_col = o.data.vertex_colors.new()
                
            else:
                v_col = o.data.vertex_colors[0]
                
            for data in v_col.data:
                data.color = color
        
if __name__ == "__main__":
    color_from_active()
3

Oh boy, this just might be exactly what I’m looking for :slight_smile:

Thank You

5

Forget it: it does work straight out of the box!