In Blender 2.80 and 2.81, the button for blocking mesh transformations (Manipulate center points) has been moved to the N-panel, the “Tool” tab (Options – Transform – Affect only – Locations) and changed to the checkbox.
In Blender 2.79 Python API we can add a new object to a scene with:
|
1 |
bpy.context.scene.objects.link(new_object) |
If we try to do this in Blender 2.80, it throws an error:
‘bpy_prop_collection’ object has no attribute ‘link’
In Blender 2.80 API new objects mast be linked not to the scene, but to the scene collections:
To link a new object to the active scene collection:
|
1 |
bpy.context.scene.collection.objects.link(new_object) |
To link a new object to the collection by its name:
|
1 |
bpy.data.collections['collection_name'].objects.link(new_object) |
2.79: selecting with the right mouse button
2.80: left-click selection
2.79: called by pressing the “t” key
2.80: it’s gone, functions moved to the main menu and to the context right-click menu
2.79: “a” – select all and deselect all
2.80: “a” – select all, “a – a” or “alt+a” – deselect all
15 changes that you need to know when migrating from Blender 2.79 to Blender 2.80Read More »
In Blender 2.8 API the requirements for the class and their identifiers naming are becoming tougher. The class name must match the following convention:
|
1 |
UPPER_CASE_{SEPARATOR}_mixed_case |
Where the {SEPARATOR} is two letters denoting the class belonging to a certain type (from which type the class is inherited):
The class identifier “bl_idname” mast match the class name.
Class naming conventions in Blender 2.8 Python APIRead More »
Add-on registration and removing were made with the “Window manager” (wm) in Blender 2.7 Python API:
|
1 2 3 4 5 |
bpy.ops.wm.addon_install(filepath='_path_to_addon', overwrite=True) bpy.ops.wm.addon_enable(module='addon_name') bpy.ops.wm.addon_remove(module='addon_name') |
In Blender 2.8 API add-on operators moved to the “preferences”:
|
1 2 3 4 5 |
bpy.ops.preferences.addon_install(filepath='_path_to_addon', overwrite=True) bpy.ops.preferences.addon_enable(module='addon_name') bpy.ops.preferences.addon_remove(module='addon_name') |
3D-cursor location property
|
1 |
context.scene.cursor_location |
in Blender 2.8 API moved to “cursor” object
|
1 |
context.scene.cursor.location |
When trying to get the cursor location through the “context.scene.cursor_location” Blender throws an error:
‘Scene’ object has no attribute ‘cursor_location’
In Blender 2.7 the “*” (star) operator is used in the matrix, vector, and quaternion multiplication. In Blender 2.8 it is replaced with the “@” (at) operator.
If the “*” operator is used in vector, matrix or quaternion multiplication in Blender 2.8 it throws an error:
Element-wise multiplication: not supported between ‘Matrix’ and ‘Matrix’ types
Proper use of the “@” operator:
|
1 |
bpy.context.region_data.view_rotation @ Vector((0.0, 0.0, 1.0)) |
The snapping elements property from Blender 2.7
|
1 |
bpy.context.scene.tool_settings.snap_element |
changed in Blender 2.8 API to
|
1 2 |
bpy.context.scene.tool_settings.snap_elements # {'EDGE'} |
The “pivot_point” property from Blender 2.7
|
1 2 |
bpy.context.area.spaces[0].pivot_point # 'BOUNDING_BOX_CENTER': |
in Blender 2.8 API moved to:
|
1 2 |
bpy.context.scene.tool_settings.transform_pivot_point # 'MEDIAN_POINT' |
The “use_drag_immediately” property from Blender 2.7
|
1 |
bpy.context.preferences.edit.use_drag_immediately |
in Blender 2.8 API moved to
|
1 2 |
bpy.context.preferences.inputs.use_drag_immediately # True |