3.4 • B3D - Interplanety

Creating a link to a new socket of the Group Output node in Blender Geometry Nodes

Leave a Comment / Blender 3D / Nikita / 28.06.2023

By default, the Group Output node from Blender Geometry Nodes node tree, has two inputs. The first one, with index 0, is the base input for the geometry. The second input, with index 1, is virtual, used to create new inputs – when we connect a link to it, a new input of a certain type is automatically created on its place.

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Checking if system operator was overridden with custom

Leave a Comment / Blender 3D / Nikita / 20.03.2023

To resolve conflicts between add-ons in Blender, it may be necessary to know if Blender base system operator has been overridden with a custom operator in some third-party add-on.

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Context overriding in Blender 3.2 and later

5 Comments / Blender 3D / Nikita / 23.01.2023

In the Blender Python API, some operators can only be called in the area they are intended for. If we call such an operator in another area, it will not be executed or Blender will throw an error. To call a context-related operator from an area not intended for it, we need to redefine the context.

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Getting vertex weights by vertex groups

Leave a Comment / Blender 3D / Nikita / 19.12.2022

To get the mesh vertex weights as they are distributed among its vertex groups with the Blender Python API, we need to correlate the vertex group indices with the group indices of the current vertex.

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Text countdown

Leave a Comment / Blender 3D / Nikita / 30.11.2022

Blender Geometry Nodes has a number of nodes for working with text strings. There are nodes that allow us to convert numbers into text, and replace substrings in a text string. As an example, let’s implement a “countdown” from ten to zero words.

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Filling a curve with random size objects on Blender Geometry Nodes

3 Comments / Blender 3D / Nikita / 23.11.2022

With Blender Geometry Nodes, we can fill the curve with the required number of objects. We can also make the fill a little more interesting by changing the size of the fill objects randomly.

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Checking object visibility in the 3D Viewport area

2 Comments / Blender 3D / Nikita / 21.11.2022

In some cases, it may be necessary to determine whether a certain object is currently visible in the 3D viewport area in Blender or not. We can determine the visibility of an object in a viewport with the Blender Python API using the location_3d_to_region_2d function of the view3d_utils module.

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Tracking switching between View Layers

Leave a Comment / Blender 3D / Nikita / 16.11.2022

The Blender Python API does not provide a special handlers for tracking View Layers switching. However, if it needs to perform some action when switching them, we can track their switching using the message bus.

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Filling a curve with the number of objects with Blender Geometry Nodes

Leave a Comment / Blender 3D / Nikita / 14.11.2022

Let’s fill the curve with the required number of objects so that they occupy the entire length of the curve without gaps, adjusting their scale if necessary.

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Using Texture Maps to Deform Geometry in Blender Geometry Nodes

2 Comments / Blender 3D / Nikita / 09.11.2022

Deforming a mesh with texture maps in Blender Geometry Nodes, we can achieve very interesting results. For example, with the Voronoi texture, it is very easy to add a bit of “organic” to any object.

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