How to add a new material slot
To add a new slot to the material slots for an object:
- We can use the operator object.material_slot_add
2.92
Snapping a mesh to the desired armature bone
To manipulate an object with an armature, if we only need to ensure that a bone has a full influence on it, we can snap the object not to the whole armature, but directly to the desired bone.
How to find which collection contains the desired object
If the object you need is located in a hidden collection, it can be difficult to find it in large scenes.
To find out in which collection the desired object is located by its type, we need to execute the following. For example for cameras:
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[(obj.name, obj.users_collection) for obj in bpy.data.objects if obj.type=='CAMERA'] # [('Camera', (bpy.data.collections['camera'],))] |
This code will return a list of cameras and collections in which they are located.
Context override
Some Blender operators can only be called from the workspace for which they are intended.
If you call from the Python console, for example, an operator intended only for working in the 3D Viewport area, the operator will not be executed:
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bpy.ops.wm.toolbar() # {'CANCELLED'} |
or it will fail with an error message about the incorrect context:
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bpy.ops.view3d.background_image_add() # RuntimeError: Operator bpy.ops.view3d.background_image_add.poll() failed, context is incorrect |
However, we can still execute operators from a non-native working area. To do this, we can pass the first implicit parameter to any operator – a pointer to the context of the area in which this operator should be executed. This parameter commonly named the “overridden context”.
How to change current tool through the Blender Python API
To switch the active tool from the T-panel in the 3D viewport window, we need to call the appropriate operator and pass the “idname” of the required tool in its “name” parameter.
For example, to enable the “Select Circle” selection toll, we need to call:
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import bpy bpy.ops.wm.tool_set_by_id(name='builtin.select_circle') |
How to change current tool through the Blender Python APIRead More »
How to link a mesh to an armature bone with maintaining its current position
To link a mesh to an armature bone that the mesh retains its current position through the Blender Python API, we need to execute the following code:
How to link a mesh to an armature bone with maintaining its current positionRead More »
Blender add-on “Accurate Region Border” v. 1.1.1.
Blender add-on “Accurate Region Border” updated to v. 1.1.1.
- Changed sliders names for more convenience
- Added confirmation for pressing “To All Scenes” button
 |
Gumroad |
How to align an armature bone to a bone from another armature
To accurately align the bone of one armature with the bone of another armature, we need to correlate the global armature matrices and the local pose-bone matrices.
To do this, we need to execute the following:
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import bpy armature_to = bpy.data.objects['Armature'] armature_from = bpy.data.objects['Armature.001'] armature_from.matrix_world = armature_to.matrix_world armature_from.pose.bones[0].matrix = armature_to.pose.bones[0].matrix |
After executing this code, the first bone of the “Armature.001” will be moved to the position of the first bone of the “Armature”.
Matrix inverting features
An attempt to invert the transformation matrix with the inverted() method can be failed if, for example, some constraint affects the object for which the initial matrix is calculated.
In this case, Blender will generate an error:
ValueError: Matrix.invert(ed): matrix does not have an inverse
Blender add-on: Freeze Transform
Freeze Transform – the Blender 3D add-on that allows you to save the current object transformations, next, move, rotate or scale the object, and then easily return it back to the saved position any time.
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Blender add-on: Swords Constructor v. 1.0.1.
Blender add-on Swords Constructor updated to v. 1.0.1.
- Skeletons added to the cursor location
- Added button to the “SKELETON” section of the constructor to quickly changing armatures viewport display
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Blender add-on: Select Circle Radius KeyMap
Select Circle Radius KeyMap – the Blender 3D add-on that allows changing the radius of the Select Circle tool with the PageUp and PageDown keyboard keys.
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Buy on Gumroad |
BMusic Player
Are you crazy about music? Music can change the mood and talk to you. Listening to music is a favorite hobby and entertainment for most people.
Here is an addon that does the job for you. ‘BMusic Player’ is an addon that takes all the music to one place inside Blender. Plays almost any format like mp3, wav, FLAC, M4A, aac etc. In addition to it, there will be detailed documentation about the addon and you can check it here.
BMusic Player v1.0.1 (Initial Release)
Key Features:
- Custom icon set.
- Popup music player.
- Custom shortcut key.
- Supports almost any formats like mp3, mp4, wav, M4A, aac, FLAC etc.
BMusic Player v1.0.2
Planned Features:
- Sleep timer.
- Personal playlist option.
- Change the playback speed.
- Multiple key mapping.
- Default music folder.
pre-order before 25th evening to get 25% discount use coupon code birthday
Finally feel the music…!
Blender add-on “M-Cleaner” v. 1.3.3.
Blender add-on “M-Cleaner” updated to v. 1.3.3.
- Fixed bug with *, [, ], etc, in material names in the “merge by name” function
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How to get the number of triangles in a mesh
To get the number of vertices, edges, and polygons in a mesh, we can simply take their amount from the desired data block: “vertices”, “edges”, and “polygons”. However, there is no special data block for triangles in the mesh structure.
To get the number of triangles in the mesh, we need to execute the following code:
Vertical and horizontal camera FOV angles
Cameras in Blender are always defined by two FOV angles – vertical and horizontal.
One of these angles is always set by the user through the camera parameter – Feild of View (or a combination of the Focal Length and Sensor Width parameters).
Blender add-on: Swords Constructor
Swords Constructor – the Blender 3D graphical editor add-on for easily creating different variations of swords and sword-like objects from a set of library elements and quickly manage their configuration.
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Blender add-on «TimeMe» v. 1.4.0.
Blender add-on “TimeMe” v.1.4.0 update.
- Added custom directory for TimeMe autosaves to fix permissions problems
Blender 2.92 autocomplete
Blender Python API autocomplete modules: fake-bpy-modules by Nutti update – added branch for Blender 2.92.
Last release: 2021.03.04.
Author GitHub: https://github.com/nutti/fake-bpy-module
Only files (without pip installation) https://github.com/Korchy/blender_autocomplete
Blender add-on “Save Selected” v. 1.0.2.
Blender add-on “Save Selected” updated to v. 1.0.2.
- Add-on checked with Blender versions 2.83, 2.90, 2.92
- The minimum required version downgraded to 2.83
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Splash screen for Blender 2.92
Blender Cloud has published a *.blend file with the splash screen for Blender 2.92. The file is available for free download.
The splash screen author is Joanna Kobierska.
The file is distributed under the CC-BY-SA license.
Blender 2.92 official release
The Blender 2.92 release is enabled for downloading on the official Blender site.
Using the Molecular add-on in Blender
Working with the Molecular add-on version 1.1.2. in Blender 2.92 tutorial.
Author: Pavel Blend