To change the rotation center (pivot point) in Blender, you can modify the pivot point setting. Here's how:
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Select your object(s) in the 3D Viewport.
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Locate the Pivot Point menu: This is usually in the center of the 3D Viewport's header, at the top of the screen. It might display an icon representing the current pivot point setting.
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Click the Pivot Point menu: A dropdown menu will appear with different pivot point options.
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Choose a Pivot Point Option:
- Bounding Box Center: Rotates around the center of the object's bounding box.
- Median Point: Rotates around the average location of all selected object origins.
- Individual Origins: Rotates each selected object around its own origin. This is useful when rotating multiple objects independently.
- Active Element: Rotates around the origin of the last selected object (the "active" object).
- 3D Cursor: Rotates around the location of the 3D Cursor.
Using the 3D Cursor as a Pivot Point:
The 3D Cursor option is particularly useful when you want to rotate around a specific point in space. Here's how to use it:
- Position the 3D Cursor: Shift + Right Click in the 3D Viewport to place the 3D Cursor where you want the rotation center to be.
- Select your object(s).
- Set the Pivot Point to 3D Cursor: Choose "3D Cursor" from the Pivot Point menu.
- Rotate: Now when you rotate the object (R key), it will rotate around the 3D Cursor.
Changing the Origin of an Object:
Sometimes, you might want to permanently change the object's origin point, rather than just temporarily using a different pivot point for rotation. This can be done using the following steps:
- Enter Edit Mode: Select the object and press Tab to enter Edit Mode.
- Select Geometry: Select the vertex, edge, or face that you want to use as the new origin location.
- Snap Cursor to Selected: Press Shift+S and select "Cursor to Selected". This will move the 3D Cursor to the selected geometry.
- Exit Edit Mode: Press Tab to return to Object Mode.
- Set Origin to 3D Cursor: In Object Mode, go to Object > Set Origin > Origin to 3D Cursor.
Now, the object's origin point has been permanently changed to the location of the 3D Cursor, and rotations will be centered around this new origin.