1

I've been trying to make a small python script that among other things project unwraps UVs using a specific axis and projection type and it fails to project the UVs at the 3D View's manipulated camera angle.

Every time I have tried to use bpy.ops.view3d.view_axis to manipulate the 3D View's camera and get a UV unwrap at a specific angle all I get is the angle from where the camera was before the script executed, not the camera changes I made in the script

I have tried different ways to substitute contexts and other weird things to see if there's a bug but no dice.

Here's what I have so far, any thoughts would be greatly appreciated:


import bpy
context = bpy.context
object = context.active_object

prev_region = bpy.context.area.type
bpy.context.area.type = 'VIEW_3D'


prev_perspective = bpy.context.space_data.region_3d.view_perspective


if bpy.context.space_data.region_3d.view_perspective == 'PERSP':
    bpy.ops.view3d.view_persportho()


https://blender.stackexchange.com/questions/15118/how-do-i-override-context-for-bpy-ops-mesh-loopcut


win      = bpy.context.window
scr      = win.screen
areas3d  = [bpy.context.area]
region   = [region for region in areas3d[0].regions if region.type == 'WINDOW']


override = {'window':win,
            'screen':scr,
            'area'  :areas3d[0],
            'region':region[0],
            'scene' :bpy.context.scene,
            'space' :areas3d[0].spaces[0],
            }


bpy.ops.wm.toolbar(override)


print(override['window'])
print(override['area'].type)
print(override['region'].type)


bpy.ops.object.mode_set(override, mode='EDIT')
bpy.ops.mesh.select_all(override, action='SELECT')


bpy.ops.mesh.uv_texture_add(override)
object.data.uv_layers[0].name = 'Color Spread'
object.data.uv_layers[0].active_render = True
object.data.uv_layers[0].active = True


The Problem


#-----------------------------------


Changing the view_axis won't change the view when using


bpy.ops.uv.project_from_view() even though the 3D view


has been changed.


bpy.ops.view3d.view_selected(override)
bpy.ops.view3d.view_axis(override, type='TOP')


Failures so far


#-----------------------------------


Setting view axis multiple times


Setting projection and view axis multiple times


AGGRESSIVELY SETTING OVERRIDES FOR EVERYTHING


Using an Override with as many details as possible


Only having one 3D View Active


bpy.ops.uv.project_from_view(override, correct_aspect=True, 
    clip_to_bounds=True, scale_to_bounds=True)
```
Takanu
  • 197
  • 7

1 Answers1

4

Run region_3d.update() before project_from_view().

Made few changes to run script without changing window type to 3D View

import bpy

def getArea(type):
    for screen in bpy.context.workspace.screens:
        for area in screen.areas:
            if area.type == type:
                return area


override = {'area': getArea('VIEW_3D')}


import bpy
context = bpy.context
object = context.active_object


prev_region = bpy.context.area.type


for ns3d in getArea('VIEW_3D').spaces:
    if ns3d.type == "VIEW_3D":
        break


https://blender.stackexchange.com/questions/15118/how-do-i-override-context-for-bpy-ops-mesh-loopcut


win      = bpy.context.window
scr      = win.screen
areas3d  = [getArea('VIEW_3D')]
region   = [region for region in areas3d[0].regions if region.type == 'WINDOW']


override = {'window':win,
            'screen':scr,
            'area'  :getArea('VIEW_3D'),
            'region':region[0],
            'scene' :bpy.context.scene,
            'space' :getArea('VIEW_3D').spaces[0],
            }


prev_perspective = ns3d.region_3d.view_perspective


if ns3d.region_3d.view_perspective == 'PERSP':
    bpy.ops.view3d.view_persportho(override)


print(override['window'])
print(override['area'].type)
print(override['region'].type)


bpy.ops.object.mode_set(override, mode='EDIT')
bpy.ops.mesh.select_all(override, action='SELECT')


bpy.ops.mesh.uv_texture_add(override)
object.data.uv_layers[0].name = 'Color Spread'
object.data.uv_layers[0].active_render = True
object.data.uv_layers[0].active = True


The Problem


#-----------------------------------


Changing the view_axis won't change the view when using


bpy.ops.uv.project_from_view() even though the 3D view


has been changed.


bpy.ops.view3d.view_selected(override)
bpy.ops.view3d.view_axis(override, type='TOP')


Update region:


ns3d.region_3d.update()


Failures so far


#-----------------------------------


Setting view axis multiple times


Setting projection and view axis multiple times


AGGRESSIVELY SETTING OVERRIDES FOR EVERYTHING


Using an Override with as many details as possible


Only having one 3D View Active


bpy.ops.uv.project_from_view(override, correct_aspect=True, 
    clip_to_bounds=True, scale_to_bounds=True)
Crantisz
  • 35,244
  • 2
  • 37
  • 89