Switching the selection mode between vertices, edges, and polygons in mesh edit mode is mapped by default to pressing the 1, 2, and 3 keycodes on the keyboard. However, if it is more comfortable to use these hotkeys for other functions, we can change this mapping.
How to change the hotkey for switching selection mode between vertex-edge-faceRead More »
Blender add-on “EEVEE Materials Override” updated to v. 1.3.1.
To apply all transformations to an object, all its vertices must be multiplied by its global matrix, the matrix itself must be made identity.
To apply all transformations to the active mesh, we need to execute the following:
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import bpy obj = bpy.context.object matrix = obj.matrix_world.copy() for vert in obj.data.vertices: vert.co = matrix @ vert.co obj.matrix_world.identity() |
To change the size of the gizmo displayed in the “3D Viewport” window:
To add a new slot to the material slots for an object:
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.
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.
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”.
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 »
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” updated to v. 1.1.1.
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”.
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
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.
Blender add-on Swords Constructor updated to v. 1.0.1.
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.
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:
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Finally feel the music…!
Blender add-on “M-Cleaner” updated to v. 1.3.3.
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:
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).
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.
Blender add-on “TimeMe” v.1.4.0 update.
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
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