To add custom mesh to the scene through the Blender Python API we need to do the following:
Open the “Text Editor” window.
Continue reading “How to create mesh through the Blender Python API”
Tag: 2.83
How to install required packages to the Blender Python with pip
For add-ons developing, sometimes it is necessary to use packages that are not included in the core set of the Blender Python interpreter. Most often, the dependencies you need are included in the Python Package Index (PyPI) and can be installed to Blender through the Pip package management system.
The Pip Package Manager is already installed in Blender. However, Blender does not allow us to install the desired packages in a common way with the “pip install package_name” command.
Continue reading “How to install required packages to the Blender Python with pip”
Blender add-on “Neoner” v. 1.1.1.
Blender add-on “Neoner” updated to v. 1.1.1.
- Added automatic converting curves type to “3D”
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Buy on Gumroad |
Blender 2.83.4 official release
The Blender 2.83.4 release is enabled for downloading on the official Blender site.
19 bugs fixed in this version.
Blender add-on “B-Presets” v. 1.1.3.
fake-bpy-modules for Blender 2.83
Blender Python API autocomplete modules by Nutti update – added branch for Blender 2.83.
Last release: 2020.07.24.
Author GitHub: https://github.com/nutti/fake-bpy-module
Only files (without pip installation) https://github.com/Korchy/blender_autocomplete
Blender add-on “NodeTree Source” v. 1.0.1.
Blender add-on “NodeTree Source” updated to v. 1.0.1.
- Fixed bug with groups in compositor
- Fixed bug with tabulation in Mapping nodes sources
- Add “hide” node property to processing
- Fixed “ColorRamp” node
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Gumroad |
Blender add-on: Watermark Plus
Blender Icons
Blender icons are built into the executable file and are not included in its distribution separately. However, icons in the .svg format can be found in the Blender developer repository on developer.blender.org.
Using the NodeTree Source add-on for making your own add-ons
An example of using the NodeTree Source addon for creating a separate addon that builds complex node trees itself.
Blender 2.83.2 official release
The Blender 2.83.2 release is enabled for downloading on the official Blender site.
15 bugs fixed in this version.
Mantaflow – fixing common problems
The “Mantaflow” liquid and smoke simulator tutorial. Describes the fixing of the most common problems of using this simulator.
By Blender Made Easy
Blender add-on: NodeTree Source
Blender 3D add-on for converting material nodes into python source code and storing it in the library.
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Gumroad |
How to rotate objects through the Blender Python API
For objects rotation, we can use the “rotation_euler” property. This property is a list of three items, each of them corresponds to the rotation angle around the X, Y, and Z-axis. The otation_euler[0] contains the rotation angle around the X-axis, rotation_euler[1] – around the Y-axis, and rotation_euler[2] – around the Z-axis. To rotate an object we must set a rotation angle to the appropriate field of the property.
For example, to rotate an active object around the X-axis to the 90 degrees angle we must execute the following command:
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import math bpy.context.active_object.rotation_euler[0] = math.radians(90) |
math.radians is used to convert degrees to radians.
How to switch between flat and smooth shading through the Blender Python API
The flat/smooth shading mode is regulated through the “use_smooth” property of each polygon of the mesh.
To enable smooth shading we need to set the “use_smooth” property of each mesh polygon to “True”.
For active object:
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bpy.context.object.data.polygons.foreach_set('use_smooth', [True] * len(bpy.context.object.data.polygons)) |
To enable flat shading – set the “use_smooth” property of each polygon to “False”.
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bpy.context.object.data.polygons.foreach_set('use_smooth', [False] * len(bpy.context.object.data.polygons)) |
To make new shading mode visible – force update mesh data:
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bpy.context.object.data.update() |
Blender add-on “EEVEE Materials Override” v. 1.2.0.
Blender add-on “EEVEE Materials Override” updated to v. 1.2.0.
- Added an ability to exclude materials from override
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Gumroad |
Collection Manager
An introduction to the “Collection Manager” add-on, greatly improving the collections abilities in Blender. This addon is included in the base add-ons in Blender 2.83.
By Paul Kotelevets (1D_Inc)
Blender 2.83.1 official release
The Blender 2.83.1 release is enabled for downloading on the official Blender site.
33 bugs fixed in this version.
Blender add-on: QR Signature
Shed light on color spaces
Tutorial about color spaces used in Blender.
Summary:
- 0:00 – About the vision
- 1:18 – What is sRGB?
- 2:02 – Difference between Linear and sRGB
- 2:30 – Why does Blender use Linear instead of sRGB?
- 3:03 – Normal and Non-color data
Switching between coordinate systems
To switch from a global coordinate system to a local coordinate system of an object, we need to multiply the global coordinates by the inverted matrix of an object:
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import copy object_matrix_inverted = copy.copy(bpy.context.object.matrix_world) object_matrix_inverted.invert() cursor_location_local = object_matrix_inverted @ bpy.context.scene.cursor.location |
To switch from the local coordinate system of the object to the global coordinate system, we need to multiply the local coordinates by the matrix of an object:
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import copy object_matrix = copy.copy(bpy.context.object.matrix_world) vertex_0 = bpy.context.object.data.vertices[0].co vertex_0_global = object_matrix @ vertex_0 |
How to scroll animation in the Viewport window
To scroll the animation in Blender without leaving the “Viewport” window – hold the Alt key and turn the mouse wheel.
This type of animation scroll works even if there is no “TimeLine” window open.
How to make node connections in Blender 2.8 not straight, but curving as before
In Blender 2.8 node connectors in the “Shader Editor” window are straight by default, unlike earlier versions, where they bent curving. To return the usual connections bend, change the following settings:
- Open the “Preferences” window
- Switch to “Themes”
- Expand the “Node Editor” tree branch
- In the “Node Curving” field, set the value greater than 0. 0 means straight lines, the larger – the greater bend. A value of 4 corresponds to the bend that was in Blender 2.7x versions.
Edit Source
For those who want to know “how Blender works” to write their own scripts and add-ons, the developers have provided a very convenient option – the ability to view any element source code in a single click.
To see the source code of any element: open the “Text Editor” window; then simply click on the desired element with the right mouse button and select “Edit Source”.
Blender 2.83 official release
The Blender 2.83 release is enabled for downloading on the official Blender site.
This is the first “LTS” version of Blender, designed for long-term support.
The official showcase of new features: