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Creating the same UI panels in different Blender areas with no code duplication

To create several identical UI panels with the same set of fields and buttons in different areas in Blender, the easiest way is to copy the panel code and replace the parameters that determine in which area the panel will be shown.

The main disadvantage of this method is code duplication, which can make difficulties in the future – when editing panels, changes must be made to each copy of the code, instead of changing it at once for all panels.

Autocomplete for developing Blender add-ons in the Eclipse IDE

The Eclipse IDE, like PyCharm, and Visual Studio Code, is one of the most popular IDEs for development, including Blender add-ons development. To improve the convenience of developing Blender add-ons in the Eclipse IDE, we can add an autocomplete to it – the code completion for the Blender Python API.

By the Pavel Geraskin tips.

How to apply transformations to a mesh with the Blender Python API

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:

Message Bus

In Blender API there is a module that we can use to track the changes of any object’s properties available through the Python API. This module names “Message Bus”.

Let’s look at how we can make an event handler function to track changes to a property. For example – the location of the 3D cursor.