API

Assigning and removing modifiers in Blender is done separately for each object. However, if we need to, for example, remove a modifier from many objects in a complex scene, removing them from each object individually will be long and inefficient. Using the Blender Python API, we can write a simple script that will remove modifiers from all selected objects in the scene.

.blend file on Patreon

Removing a modifier from all selected objects using Blender Python APIRead More »

Unfortunately, the developers have not yet provided access to the Quick Favorites menu via the Python API in Blender. However, it is possible to transfer the entire menu to the user panel. We can simply draw the Quick Favorites content on the user panel layout.

.blend file on Patreon

Moving buttons from the Quick Favorites menu to the user panelRead More »

To work with geometry in Blender using the Python API, it is often necessary to find the center point of a polygon. This may be necessary for organizing various bindings, aligning objects along a polygon, positioning, and in many other cases.

.blend file on Patreon

Finding the center of a polygonRead More »

We may need to get the rotation matrix from one vector to another in 2D space, for example, when working with UV maps. This is often necessary to adjust one UV island to another.

.blend file on Patreon

The rotation matrix from one vector to another in 2D spaceRead More »

To sort the list of materials in the object’s material slots in Blender in the desired way, for example, alphabetically, we can use the function we created earlier to switch materials in material slots.

.blend file on Patreon

Sorting materials in material slots alphabeticallyRead More »

To move a material from one material slot to another, we can click the up or down arrow button in the object’s material panel. In this case, the material in the currently selected slot will move up (or down) by one position. This method of moving and sorting materials is very slow and not very convenient.

.blend file on Patreon

Moving a material from one object material slot to another in BlenderRead More »

In order to completely select or deselect the entire mesh, it is not enough to change the selection only for its vertices, we also need to change the selection for the edges and polygons of the mesh.

.blend file on Patreon

Selecting and deselecting in bmesh only by verticesRead More »

When rotating or moving an object using transformation matrices, in some cases we need to be able to extract a part of it from the entire rotation/movement. For example, when rotating an object by 180 degrees, we need to rotate it not at once, but in several steps, each time rotating it by 30 degrees. Linear interpolation of matrices can help us with this.

.blend file on Patreon

How to get a partial transform matrix from an existing oneRead More »

In order to compare two vectors – to determine whether both vectors point to the same place, we need to compare the coordinates of both vectors and if they are equal, then the vectors are also equal. However, the coordinates of the vectors are specified by float values, the comparison of which for equality, due to the peculiarities of storing this type in computer memory, is never accurate.

.blend file on Patreon

Comparing vectorsRead More »