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.
To select all objects in Blender with the desired modifier appended using the Blender Python API, we need to loop through all the objects in the scene, check for the presence of the desired modifier and set the object selection flag to True.
Selecting all objects with the desired modifier in BlenderRead More »
We can apply modifiers to an object by sequentially looping through the modifiers list and calling the bpy.ops.object.modifier_apply() operator to apply each of them. However, we can use the fact that the depsgraph already has fully calculated mesh data with modifiers already applied and simply rebuild the object according to this data.
We can open an image/texture in Blender using the Python API by calling the bpy.opa.image.open(…) operator, or directly through the blend data collection by calling the bpy.data.images.load(…) method.
Checking if the desired image type is supported in BlenderRead More »
We can get access to an object’s UV layers using the Blender Python API through it’s “uv_layers” list By referring to any UV layer from the list, we can make it active for using and for rendering.
Setting the UV layer active with the Blender Python APIRead More »
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.
To quickly toggle geometry shading from flat mode to smooth and back, we need to change the value of the “smooth” property for each polygon of the mesh.
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.
Checking object visibility in the 3D Viewport areaRead More »
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.
With the Blender Python API we can manage not only scene objects, but also the view from the 3D viewport area, The viewport has a matrix with which the viewport can be moved to the desired position.
Controlling 3D Viewport with the Blender Python APIRead More »
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