Blender

Context override

Nikita

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:

or it will fail with an error message about the incorrect context:

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”.

This method is suitable for Blender version 3.1 and earlier. For Blender 3.2 and later, we must use the temp_override() method.

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How to run Blender 2.93 on Windows 7

Nikita

Since version 2.93, Blender developers moved its API to Python 3.9. This means that Blender will no longer run on computers with Windows 7 operating system because it has no compatibility with this version of Python. In order to continue using the latest versions of Blender, users will have to update their operating system.

However, thanks to the fan-made work of Alexandru Naiman, Blender 2.93 can still be run on Windows 7.

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How to change current tool through the Blender Python API

Nikita

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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Ortho lighting

Nikita

When the scene is lighted with “Spot” or “Point” light sources, the rays from such lamps do not propagate in parallel. This makes noticeable distortion, for example when lighting with textures.

The parallel ray’s propagation (orthogonally to its plane) we can get from the “Sun” lamp, but such light source does not support lightning with textures.

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