Switching the selection mode between vertices, edges, and polygons in mesh edit mode is mapped by default to pressing the 1, 2, and 3 keycodes on the keyboard. However, if it is more comfortable to use these hotkeys for other functions, we can change this mapping.
How to change the hotkey for switching selection mode between vertex-edge-faceRead More »
Since Blender 2.80 the deselect all function – complete deselection of all objects or geometry – has been switched from a single press of the “a” key to a double “a-a” or a combination of “alt+a” keycodes. To return the deselection function to a single “a” press, we can edit the settings of the selection operators. Or, since Blender 2.81, a special checkbox is provided for this in the keyboard shortcuts settings.
Now the selection of all objects/geometry and their total deselection will be performed by pressing the single “a” key.
When fine-tuning the finished render in “Compositing”, sometimes it is necessary to refer to the pixels coordinates of the processed image, for example, to apply effects distributed over the entire width or height of the image.
We can get the distribution factor of coordinates along with the height or width of the rendered image using texture nodes.
How to get the render pixels coordinates in compositingRead More »
To completely remove the object from the scene through the Blender Python API do the following:
Open the “Text Editor” window.
How to delete object from scene through the Blender Python APIRead More »
In scripts and add-ons for importing-exporting files with formats that are not supported in Blender by default, we must give the user an ability to select files using the “FileBrowser” interface.
To open the file browser window, and after the user selects the necessary file, to return the path to it, we need to use the “ImportHelper” and the “ExportHelper” classes.
Using the FileBrowser interface window to opening and saving filesRead More »
To add custom mesh to the scene through the Blender Python API we need to do the following:
Open the “Text Editor” window.
How to create mesh through the Blender Python APIRead More »
For objects rotation, we can use the “rotation_euler” property. This property is a list of three items, each of them corresponds to the rotation angle around the X, Y, and Z-axis. TheĀ otation_euler[0] contains the rotation angle around the X-axis, rotation_euler[1] – around the Y-axis, and rotation_euler[2] – around the Z-axis. To rotate an object we must set a rotation angle to the appropriate field of the property.
For example, to rotate an active object around the X-axis to the 90 degrees angle we must execute the following command:
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import math bpy.context.active_object.rotation_euler[0] = math.radians(90) |
math.radians is used to convert degrees to radians.
The flat/smooth shading mode is regulated through the “use_smooth” property of each polygon of the mesh.
To enable smooth shading we need to set the “use_smooth” property of each mesh polygon to “True”.
For active object:
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bpy.context.object.data.polygons.foreach_set('use_smooth', [True] * len(bpy.context.object.data.polygons)) |
To enable flat shading – set the “use_smooth” property of each polygon to “False”.
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bpy.context.object.data.polygons.foreach_set('use_smooth', [False] * len(bpy.context.object.data.polygons)) |
To make new shading mode visible – force update mesh data:
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bpy.context.object.data.update() |
To switch to the view from the active camera we can execute the following command:
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bpy.ops.view3d.view_camera() |
This operator works in the toggle mode, so the next executing of the same command returns the view to the previous state.
Switching to the view from camera throug the python APIRead More »
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