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change color in Python

1. B by bernd on 11 Apr 2024, edited 12 Apr 2024 #

   I would like to change the color of the object in the scene by python ...

   All the following works very well ...

   from blenderbim.bim.ifc import IfcStore
   
   obj = IfcStore.get_element("some_guid")
   
   obj.type
   
   obj.name
   
   obj.hide_set(True)  # hide
   
   obj.hide_set(False)  # show
   
   obj.visible_get()  # get visibility
   
   obj.select_set(True)  # select
   
   obj.select_set(False)  # unselect

   but with this nothing happens to the object ...

   obj.color = [1.0, 1.0, 0.0, 1]

   Am I missing something ?

2. B by bruno_perdigao on 11 Apr 2024 # +2 votes

   Maybe it's working, but you are not seeing, check if Viewport Shading color is set to "Object". You can also inspect in Object Properties > Viewport Display:

   

3. B by bernd on 11 Apr 2024 #

   I knew how to do this by gui. I would like to change the color of an object in the scene view by python.

4. B by bernd on 11 Apr 2024 #

   Ahh got you point ... open the Viewport Shading Dialog and switch from Material to Object and be happy with the changed color

   works great :-)

5. B by bernd on 11 Apr 2024, edited 11 Apr 2024 #

   Which results in the next question. How can this Viewport shading color be switched to object by Python?

6. B by bruno_perdigao on 11 Apr 2024 # +2 votes

   The short answer would be:

   
   for area in bpy.context.screen.areas: # iterate through areas in current screen
   
       if area.type == 'VIEW_3D':
   
           for space in area.spaces:
   
               if space.type == 'VIEW_3D':
   
                   space.shading.color_type  = 'OBJECT'
   

   It gets trickier if you have more than one viewport and would like to change just a specific one

7. B by bernd on 12 Apr 2024 #

   works great here ... :-)

   @bruno_perdigao said:

   It gets trickier if you have more than one viewport and would like to change just a specific one

   Thus ... If I switch from BIM to scripting copy the code it changes the viewport above Python widget, but not the main viewport if switch back to BIM. I am fine with this ATM :-)

8. G by Gorgious on 12 Apr 2024, edited 12 Apr 2024 # +2 votes

   You can query viewports in all the workspaces at once :

   
   import bpy
   
   
   for ws in bpy.data.workspaces:
   
       for screen in ws.screens:
   
           for area in screen.areas:
   
               if area.type == 'VIEW_3D':
   
                   for space in area.spaces:
   
                       if space.type == 'VIEW_3D':
   
                           space.shading.color_type  = 'OBJECT'
   
   
   # Or if you want only the BIM workspace
   
   ws = bpy.data.workspaces.get("BIM")
   
   if ws:
   
       for screen in ws.screens:
   
           for area in screen.areas:
   
               if area.type == 'VIEW_3D':
   
                   for space in area.spaces:
   
                       if space.type == 'VIEW_3D':
   
                           space.shading.color_type  = 'OBJECT'
   

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