Blender 3D: tutorials, articles, tips, notes
BIS (Blender Interplanety Storage) updated to v.1.7.0.
But BIS still accenting on procedural materials.
When we create a field on the add-on interface panel, the value of which changes something in the node tree, each time the user changes the field value the node tree recompiles. If the user changes the value in that field by holding and moving the mouse, too frequent node tree recompilation will cause Blender to hangs.
This problem can be solved using decorators for deferred updating of the node tree.
Code by Skarn.
Class for quick node creation by their type.
Code by Skarn.
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 |
class NodeTreeBuilder: def __init__( self , node_tree : bpy.types.NodeTree , x : float = -200 , y : float = -200 , delimeter : float = 300 ): self._x = x self._y = y self.tree = node_tree self.delimeter = delimeter self.purge_tree() def purge_tree(self): for node in self.tree.nodes: self.tree.nodes.remove(node) def add_node( self , node_type : str , node_name : str , column : int , row : int , node_descr : str = "" ): node = self.tree.nodes.new(node_type) node.name = node_name node.label = node_descr if node_descr else node_name node.location = (self.delimeter * column + self._x, -self.delimeter * row + self._y) return node |
This add-on for Blender 2.8 creates a grouping workflow using Blender 2.7 group style. Add-on doesn’t “brokes” the scene, so you can properly work with groups made with this add-on having no add-on installation.
By Michael Soluyanov.
Video with an add-on demonstration:
You can get this add-on at:
Blender Market: https://blendermarket.com/products/quick-instance
Gumroad: https://gumroad.com/l/qinstance
With the Blender popularity growing, the number of add-ons created for it by third-party developers is growing too. A lot of high-quality professional add-ons are written for Blender now. Over time, the number of add-ons is becoming more and more. And on this wave aggregators appeared – programs and services independently searching for add-ons and allowing Blender users to install add-ons quickly, many at once, and bypassing add-on distribution channels selected by their authors. What caused a negative reaction of add-on developers.
Continue reading “How to protect your add-on from downloading through aggregators”
The BIS (Blender Interplanety Storage) library already has over 400 open public materials available for users.
BIS (Blender Interplanety Storage) updated to v.1.6.5.
BIS (Blender Interplanety Storage) updated to v.1.6.4.
Nutti, the author of the “fake-bpy-modules” project, has made the installation of the Blender Python API autocomplete modules through the pip platform. Pip installation is faster and easier, but sometimes we just need to copy the autocomplete modules to our project but now they are not included in the Nutti’s GitHub.
Copies of the autocomplete modules for Blender versions 2.79 and 2.80 can be downloaded directly from here: https://github.com/Korchy/blender_autocomplete
To get the vertex coordinates in the scene global coordinate system when the object’s scale was not applied, we need to multiply the local vertex coordinates by the object world transformation matrix:
|
1 2 3 |
object = bpy.data.objects['_MY_OBJECT_'] v_local = object.data.vertices[_VERT_NUMBER_].co # local vertex coordinate v_global = object.matrix_world @ v_local # global vertex coordinates |
When developing add-ons it is often necessary to give an ability to set a number of parameters that affect the whole add-on work to the user. For example, the user can specify a directory for saving/loading files, set some default variables or switch between add-on modes. Of course, the interface for setting such parameters can be placed in the add-on panel, but it is better to place it in a separate add-on preferences panel, which is located in the “Preferences” window under the add-on installation panel.
The main advantage of the add-on preferences is that they don’t reset when Blender restarts. The user does not need to configure the add-on preferences each time, it’s enough to set the necessary parameters once, personalizing the add-on for convenient work.
Let’s create an add-on and define a parameter, placing it in the add-on preferences panel.
BIS (Blender Interplanety Storage) updated to v.1.6.3.
On the BlS (Blender Interplanety Storage) site all the open library now is available for viewing without creating account and registration. You can view all shared BIS content through the direct link.
The Advanced Transform add-on is ported for Blender 2.8.
No critical changes to the source code, only adopting for Blender 2.8.
Add-on on the GitHub:
https://github.com/Korchy/advanced_transform
file to download and use – advanced_transform_2_8.py
BIS (Blender Interplanety Storage) updated to v.1.6.2.
To find what Python interpreter version is used in current Blender version type the following commands in Python Console window in Blender:
|
1 2 3 4 |
import sys print(sys.version_info) # sys.version_info(major=3, minor=7, micro=0, releaselevel='final', serial=0) |
It means that the version of Python used in Blender is 3.7.0.
To make it more readable type the following command:
|
1 2 |
print('.'.join(map(str, sys.version_info[:3]))) # 3.7.0 |
or with full info:
|
1 2 |
print(sys.version) # 3.7.0 (default, Aug 26 2018, 16:05:01) [MSC v.1900 64 bit (AMD64)] |
In the latest version 2.8 of Blender developers have made many changes in API, so all the scripts and add-ons written for earlier Blender versions (2.7 and below) have stopped working. To run your add-ons in the new Blender 2.8, you need to port them – correct their code to work properly with the new Blender API.
To enable your add-on in Blender 2.80 you have to make the following changes in code:
Continue reading “Porting add-on from Blender 2.7 to Blender 2.8”
BIS (Blender Interplanety Storage) add-on is ported to Blender 2.8
The add-on branch for Blender 2.7 is fixed on the number 1.5. The master release for Blender 2.8 has the version number 1.6 and higher in future development.
For both add-on versions the same library is used, so all BIS materials are available for all add-on versions, however, please note, materials made for Blender 2.8 may not look correct in Blender 2.7 and backward.
Now the download consists of two archives to install the add-on:
To make an integer input/output in the node group:
BIS (Blender Interplanety Storage) updated to v.1.5.2.
With this new tool, you can, for example, add inputs/outputs of the Integer type to node groups.
The BIS library is free and fully accessible for all users. Any content (materials or meshes) from the open part of the library can be downloaded by any user without any restrictions. So why do you need a pro- account?
At first, this is a way to support the project. Like any other free project, BIS needs for users support. However, the BIS pro- account is not only a status attachment. The pro- status does not provide any additional content, but it allows you to make your pipeline with BIS more convenient.
Pro- account users have the following advantages:
Now the BIS materials library for Blender has its own Patreon page.
If you want to support the project, you can do it there.
Texturing/shading materials in the Christmas scene with the BIS library having pro- account.
The main advantage of the BIS pro- account: you don’t need to switch to the BIS website to get active materials, all materials can be download directly from Blender.
