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Maniphest T56981

python .scene_raycast returned object is not selectable
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Description

System Information
Linux Mint 19 Nvidia 1070

Blender Version
Broken: 2.8
Worked: 2.79

Short description of error
python .scene_raycast returned object is not selectable

Exact steps for others to reproduce the error
Perform a scene ray cast and then use a .select_set(action='SELECT') on returned object.
RuntimeError: Error: Object 'Cube' not in View Layer 'RenderLayer'!

Load startup file, then run this into blender's console.

context = C
orig = Vector((10,10,10))
vec = -orig

res, pos, normal, face_index, obj, matrix_world = context.scene.ray_cast(
            view_layer=context.view_layer,
            origin=orig,
            direction=vec)

obj.select_set(action='SELECT')

Revisions and Commits

rB Blender
rB3cd98d9ef7e6 Fix T56981: python .scene_raycast returned object is not selectable.

Event Timeline

stephen leger (stephen_leger) created this task.Sep 30 2018, 1:58 PM
Bastien Montagne (mont29) changed the task status from Unknown Status to Archived.Sep 30 2018, 9:48 PM
Bastien Montagne (mont29) claimed this task.
Bastien Montagne (mont29) added a subscriber: Bastien Montagne (mont29).

No bug here, error message is self-explanatory really. Just how new 2.8 system works.

stephen leger (stephen_leger) added a comment.EditedSep 30 2018, 11:07 PM

Checked again with factory startup file.

throws RuntimeError: Error: Object 'Cube' not in View Layer 'View Layer'!

but Cube is on 'View Layer' !

>>> C.view_layer.objects[:]
[bpy.data.objects['Cube'], bpy.data.objects['Lamp'], bpy.data.objects['Camera']]
>>> C.view_layer.name
'View Layer'

So i feel there is realy something going wrong here.

Bastien Montagne (mont29) changed the task status from Archived to Unknown Status.Sep 30 2018, 11:52 PM
Bastien Montagne (mont29) lowered the priority of this task from 90 to 50.

Eeek, yes indeed, actually it returns evaluated version of the object (COW, you know…), not the 'real' data from bpy.data… will fix.

Bastien Montagne (mont29) changed the task status from Unknown Status to Resolved by committing rB3cd98d9ef7e6: Fix T56981: python .scene_raycast returned object is not selectable..Sep 30 2018, 11:55 PM
Bastien Montagne (mont29) added a commit: rB3cd98d9ef7e6: Fix T56981: python .scene_raycast returned object is not selectable..