Creating an operator in the Blender Python API, its description is usually specified in its “bl_description” parameter. However, quite often the same operator performs different actions in different cases, and a constant description does not describe all its capabilities. In this case, a dynamic description can be given to an operator.
One of the common tasks when making a scene in Blender is to control the overlapping of meshes. We can check whether two meshes intersect with each other using the technology of Bounding Volumes.
There is no single selection list for collections. We can open the Outliner in two different Blender areas, and select a different set of collections in each of them. Since the list of selected collections is different for each Outliner area, it can only be obtained through the context of this area.
Blender macros differs from Blender operators – they don’t require a predefined “execute” function with constant actions. In macros actions are added after its registration using the “define” method.
With the Python API we can customize Blender interface as we need. For example, we can place the most frequently used operators to the header (top menu) of any workspace area. This way we can assemble our own ribbon with “quick favorite” buttons.
When rendering animations in Blender, it’s often necessary to save one single frame for later use as a preview. Of course, we can do this manually, after finishing the animation rendering, switch to the desired frame and separately render it. However, with the Blender Python API, we can organize the automatic saving of the desired frame during the animation render.
Render a single frame for preview when rendering animationRead More »
To add a new strip to the Sequence Editor programmatically, we need to know the channel number to place it. We can get the number of an empty channel in the Sequence Editor throug the Blender Python API by walking through the list of sequences already added to the Sequence Editor.
Getting the next empty channel number in Sequence Editor with the Blender Python APIRead More »
Viewport Purge Button – Blender 3D add-on that adds the “Purge” button to 3D Viewport area header for clearing the scene from unused objects (meshes, materials, etc).
It doesn’t need to assemble a large and complex shader node tree to make a parallax shader in Blender. The simplest parallax effect can be achieved by connecting just 3 nodes.
Most video formats don’t have a built-in transparency channel, so the black and white mask – a separate video file that determines how one video will be blended on another, can be used for blending such videos.
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