1
$\begingroup$

I want to UV Unwrap with Smart UV Project but don't want to use bpy.ops.uv.smart_project().

In Blender 3.6 LTS, I tried with context.temp_override() but got this error:

import bpy
from bpy import context


override = context.copy()
override['mode'] = 'EDIT_MESH'
override['selected_objects'] = [bpy.data.objects['Cube'], bpy.data.objects['Suzanne']] # will replace with another list of objects

with context.temp_override(**override):
    bpy.ops.uv.smart_project(angle_limit=1.15192, margin_method='SCALED', island_margin=0, area_weight=0, correct_aspect=True, scale_to_bounds=False)

RuntimeError: Operator bpy.ops.uv.smart_project.poll() failed, context is incorrect

Improve this question
$\endgroup$
7
  • $\begingroup$ It's strange. The script worked fine for me with the same version of Blender. You are in Edit Mode? $\endgroup$ Commented Jul 28, 2023 at 6:07
  • $\begingroup$ blender.stackexchange.com/questions/296981/… $\endgroup$ Commented Jul 28, 2023 at 6:27
  • $\begingroup$ btw usage of override=context.copy() i think is deprecated. blender.stackexchange.com/questions/6101/… $\endgroup$ Commented Jul 28, 2023 at 6:35
  • $\begingroup$ @tetii Yes it works in Edit mode, but I want it in Object mode. I also tried using override['mode'] = 'EDIT_MESH' $\endgroup$ Commented Jul 28, 2023 at 7:30
  • $\begingroup$ don't use override = context.copy() that is deprecated. use override = {}. that will work in edit mode. bmesh doesnt have a direct uv unwrap method. I don't think you can avoid going into Edit mode. $\endgroup$ Commented Jul 28, 2023 at 11:31

1 Answer 1

Reset to default
0
$\begingroup$

You are in the wrong context. Your context is in Object Mode but you need to be in Edit Mode. Here is the working script:

import bpy

bpy.ops.object.select_all(action='DESELECT')

selected_objects = [bpy.data.objects['Cube'], bpy.data.objects['Suzanne']]

for obj in selected_objects:
    obj.select_set(True)

area_type = 'VIEW_3D'
areas  = [area for area in bpy.context.window.screen.areas if area.type == area_type]

if len(areas) <= 0:
    raise Exception(f"Make sure an Area of type {area_type} is open or visible in your screen!")

with bpy.context.temp_override(
    window=bpy.context.window,
    area=areas[0],
    regions=[region for region in areas[0].regions if region.type == 'WINDOW'][0],
    screen=bpy.context.window.screen
):
    bpy.ops.object.mode_set(mode='EDIT')
    bpy.ops.mesh.select_all(action='SELECT')
    bpy.ops.uv.smart_project(angle_limit=1.15192, margin_method='SCALED', island_margin=0, area_weight=0, correct_aspect=True, scale_to_bounds=False)

EDIT: Oh we don't even need to do any context overrides still works:

import bpy

bpy.ops.object.select_all(action='DESELECT')

selected_objects = [bpy.data.objects['Cube'], bpy.data.objects['Suzanne']]

for obj in selected_objects:
    obj.select_set(True)

bpy.ops.object.mode_set(mode='EDIT')
bpy.ops.mesh.select_all(action='SELECT')
bpy.ops.uv.smart_project(angle_limit=1.15192, margin_method='SCALED', island_margin=0, area_weight=0, correct_aspect=True, scale_to_bounds=False)
Improve this answer
$\endgroup$
2
  • $\begingroup$ I don't want to use bpy.ops, any better Python way? I also tried using override['mode'] = 'EDIT_MESH' $\endgroup$ Commented Jul 28, 2023 at 7:24
  • $\begingroup$ Is it possible to do with bmesh? $\endgroup$ Commented Jul 28, 2023 at 7:37

You must log in to answer this question.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.