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.
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.
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.
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.
Moving a material from one object material slot to another in BlenderRead More »
One of the most common problems in modeling is how to quickly switch to an object (select it) if the object is hidden behind another object. In most cases, this requires a number of actions, for example – switching to the wireframe display mode, selecting the hidden object, with accurately hitting the edge by the mouse, and, finally, returning to the solid display mode.
Using drivers, we can pass values to the Blender Geometry Nodes tree that cannot be obtained from nodes, for example, the total number of frames in a project animation. However, there are cases when a value needs to be passed from Geometry Nodes to some property of an object not related to GN. In this case, drivers can also help us.
Passing values from Blender Geometry Nodes to other scene objectsRead 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.
Selecting and deselecting in bmesh only by verticesRead More »
When modeling “by reference”, it is sometimes necessary for the 3D scene grid to be displayed on top of the reference image. This makes it easier to snapping and relate the model being built to the scene as a whole.
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.
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