From the math course, we know that only one circle can be drawn through any three points in space. So, if we have three points in a Blender scene, defined by the coordinates V0 (x0, y0, z0), V1 (x1, y1, z1), and V2 (x2, y2, z2), let’s see how we can construct a circle that passes through these three points.
Aligning one plane to another is a common task in 3D modeling. The easiest way to align planes is by using their normal vectors – we need to rotate the original plane so that its normal vector coincides with the normal vector of the plane for which the alignment is performed. Therefore, the task of rotating one plane to another can be reduced to the problem of rotating the normal vector of the first place to the normal vector of the second plane.
Calculating a rotation matrix from one vector to anotherRead More »
For ease of display, all input and output sockets on nodes, both shader and geometry, can be hidden from the user. Hiding unused node inputs and outputs may be necessary to simplify the visual perception of the node tree, which can be very large and complex and does not need to be overloaded with unnecessary information.
Hiding all inputs and outputs on nodes in Blender using Python APIRead More »
One of the methods for mesh analytics is exploring its triangulated geometry. For example, such exploration is used when searching for polygons that overlaps in the mesh itself or in its UV. In order to return the result obtained after analyzing the triangulated mesh back to the original mesh, we need to know the exact correspondence between the original polygon and the triangles created from it.
Polygons and triangles correspondence after triangulating a mesh in BlenderRead More »
Starting with Blender 4.2, the Capture Attribute node has changed in functionality. If earlier this node always had only one “Value” input and only one “Attribute” output, intended for recording attributes, in addition to the standard geometry socket, then starting with version 4.2, the number of inputs/outputs for recording attributes has been made dynamic.
Working with inputs and outputs for the Capture Attribute Node in Blender Geometry NodesRead More »
It is often necessary to select all the boundary edges of a mesh – edges that are on the outer perimeter of the mesh, or located around areas of the mesh that are not filled by polygons. This operation can be performed by the user from the 3D Viewport menu: Select – Select Loops – Select Boundary Loop.
Selecting edges on the boundaries of a mesh in BlenderRead More »
We can bind not only common system operators to buttons on the toolbar (T-Panel), but also custom ones created by us. The principle of connection in Blender Python API is the same for both system and custom operators.
The Blender Python API provides add-on developers with quite a wide range of options for designing a user interface. However, sometimes the built-in capabilities of the Blender API may not be enough. We can create a window with a UI that is completely independent of the built-in API by connecting and using the PySide module.
Creating a custom UI window in Blender using PySideRead More »
PySide is a Python module that extends the capabilities of graphical user interface (UI) development. The license allows its use in both open and closed and commercial projects. The PySide module is not included in the basic Blender distribution, but it is not difficult to install it manually.
To get the current active object in a Blender scene, we usually use the context and its context.object (or context.active_object) property. Similarly, when working with the interface, we can access the context to get the currently active property – the value of the field in the Blender UI over which we hover the cursor or on which we clicked with the mouse. The context.property value is used for this.
Getting the active property value in Blender using contextRead More »
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