Use blender change material color with python

Question

I have a model about blender,there is a object （name's car_AudiA8） with multi-material，I want to copy a new object from the object ("car_AudiA8"),then change new object's color and old object's color is not affected,my method is :

obj = bpy.data.objects["car_AudiA8"]
mesh = obj.data
new_obj = bpy.data.objects.new("car_AudiA8", mesh)
bpy.context.scene.objects.link(new_obj)
bpy.ops.object.make_single_user(object = True, obdata = True, material = True,texture = True )
for slot in bpy.data.objects[new_obj.name].material_slots:
    if (slot.name.startswith("carpaint.Black")):
        bpy.data.materials[slot.name].diffuse_color = (1,0,0)

note: material("carpaint.Black") can control car's color .

This might be a better question for blender.stackexchange.com seeing as it concerns the blender api rather than a general programming problem — Peter Gibson
– Peter Gibson, Commented Jul 3, 2017 at 5:28

Peter Gibson · Accepted Answer · 2017-07-03 05:42:50Z

2

It looks like you're modifying the existing "carpaint.Black" material, which would affect all objects using that material. Instead, try assigning a new material to that slot

for slot in bpy.data.objects[new_obj.name].material_slots:
    if (slot.name.startswith("carpaint.Black")):
        new_mat = bpy.data.materials.new(name="carpaint.NewRed")
        new_mat.diffuse_color = (1,0,0)
        slot.material = new_mat

I'm not sure if this will work as is, but you get the idea. You might be better off copying the black material instead of just creating a new material from scratch.

answered Jul 3, 2017 at 5:42

Peter Gibson

19.6k7 gold badges63 silver badges65 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

user824624 Over a year ago

thank you for the answer, I use " bpy.ops.object.make_single_user(object = True, obdata = True, material = True,texture = True )",it can separate new object's material and old object's material ,and new material's name is different from old material's name. and I don't need create new material ,please help me.

Ângelo Polotto Over a year ago

diffuse_color should have 4 elements in the tuple, RGB colors and Alpha intensity: (1, 0, 0, 1)

Collectives™ on Stack Overflow

Use blender change material color with python

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related