The Options panel of the Grid And Snap Settings dialog lets you set options related to snapping.
The effect of rotating and scaling with snaps depends on whether Auto Key is on or off:
To set snap options:
This opens the Grid And Snap Settings dialog.
Example: To use Snap Preview:
The Snap Preview Radius setting lets you preview a snap before it actually happens. The Snap Radius setting determines when actual snapping occurs, providing the same functionality as Snap Strength in previous versions.
This procedure also demonstrates how to cycle through available snap/preview points with the keyboard shortcut.
To maximize the Perspective viewport, make sure it's active (highlighted border), and then press Alt+W.
Snap and Snap Preview measure in pixels, so if the grid points are relatively far apart, it's easy to see the difference between Snap Preview and Snap.
The default Snaps setting is Grid Points only; if this is not the case, make it so. A grid point is the intersection of two grid lines.
In the General group, Snap Preview Radius is set to 30 pixels and Snap Radius is set to 20 pixels. You can leave this dialog open while you use snaps.
You're now in line-creation mode.
As you do so, a rubber-band line connects the mouse cursor to the start point.
This shows the snap preview; you'll see its purpose in the next step.
The second line vertex is created not where you clicked but at the grid point indicated by the snap preview. Snap preview lets you see where a snap will occur before it actually happens.
At the Snap Preview Radius distance (30 pixels), the snap cursor appears at the grid point.
After you move it 10 pixels closer (the difference between Snap Preview Radius and Snap Radius), the line endpoint jumps from the mouse cursor to the grid point. This is the legacy snap functionality.
Provides settings that affect the visual display of the snap points.
Snap functionality includes several features that enhance ease of use. When using Snap, if the cursor comes within distance of a potential snap point that's less than the Snap Preview Radius distance but greater than the Snap Radius distance, the snap cursor jumps to that point as a preview of where the snap will occur, but no actual snapping occurs.
To use the preview point as the snap point, click or release the mouse button, depending on the context. If, instead, you then continue to move the cursor toward the potential snap point so that it comes within a distance equal to or less than the Snap Radius value, the snap takes place.
When a snap-to preview point is highlighted, release or click the mouse button (depending on the context) to snap the current selection to that location. Alternatively, before using the displayed snap point, you can cycle though any other available preview and snap points by pressing and holding Alt+Shift and then press S repeatedly.
Sets the size of the area around the cursor, in pixels, within which snapping occurs automatically. Default=20.
Sets the increment at which objects are rotated about a given axis (degrees) when Angle Snap is active. Angle snap also affects the following:
For more information, see Angle Snap.
Sets the percentage increment for scale transforms when Percent Snap is active.
For more information, see Percent Snap.
When on, snapping to frozen objects is enabled. Default=off. This option is also available from the Snaps shortcut menu, accessed when you hold Shift and right-click in any viewport, as well as from the Snaps toolbar.
When on and you move an object using an axis constraint via the Move gizmo or the Axis Constraints toolbar, constrains the selected object to move only along the specified axis or plane. When off, the constraints are ignored, and snapped objects can be translated in any dimension (assuming 3D snapping is used).
Also when Enable Axis Constraints is on, a circle appears at the intersection of the Move gizmo axes (that is, the pivot point). If, instead of dragging the gizmo, you drag this circle, Snap turns off Enable Axis Constraints temporarily, constraints are ignored, and the object moves in Screen space. As a visual indicator, all axis and plane elements of the gizmo turn yellow while this mode is active. As soon as you release the mouse button, Enable Axis Constraints becomes active again.
Dragging the circle icon on the Move gizmo temporarily turns off Enable Axis Constraints, permitting free movement.
Buttons on the Axis Constraints toolbar update interactively, depending on which portion of the gizmo or geometry you use to move the object.
This option is also available from the Snaps shortcut menu, accessed when you hold Shift and right-click in any viewport, as well as from the Snaps toolbar.
When on and you move an selection, a rubber-band line appears between the original location and the mouse position. Use this visual aid for greater accuracy when fine-tuning your model. Default=on.