123 lines
3.6 KiB
ReStructuredText
123 lines
3.6 KiB
ReStructuredText
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*********
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Precision
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*********
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.. reference::
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:Mode: Object and Edit Modes
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:Shortcut: :kbd:`Ctrl` and/or :kbd:`Shift`
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Holding :kbd:`Ctrl` during a transform operation (such as move, rotate or scale)
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will toggle :doc:`Transform Snapping </editors/3dview/controls/snapping>`.
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When using :ref:`Increment Snap <bpy.types.ToolSettings.snap_elements_base>`
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this allows the transformation to be performed in discrete amounts.
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Holding :kbd:`Shift` during a transform operation will transform
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the object at 1/10th the speed, allowing much finer control.
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The magnitude of the transformation can be viewed in the 3D Viewport header.
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Releasing :kbd:`Ctrl` or :kbd:`Shift` during the transformation will cause
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the movement to revert back to its normal mode of operation.
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.. note::
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The snapping behaviors described on this page **only** apply
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when :ref:`Increment Snap <bpy.types.ToolSettings.snap_elements_base>` is selected.
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.. tip::
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It is possible to enable both snapping and precision mode,
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simply hold :kbd:`Ctrl` and :kbd:`Shift`. This has the following effects:
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Move
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Changes in 0.1 unit increments, regardless of zoom level.
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Rotation
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Changes in 1 unit increments.
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Scale
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Changes in 0.01 unit increments.
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Usage
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=====
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With Hotkeys
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------------
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Press :kbd:`G`, :kbd:`R` or :kbd:`S` and then hold either :kbd:`Ctrl`,
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:kbd:`Shift` or :kbd:`Shift-Ctrl`.
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With the Transform Gizmo
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------------------------
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Select the gizmo handle then while moving the mouse hold :kbd:`Ctrl`, :kbd:`Shift` or :kbd:`Shift-Ctrl`
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to activate precision control or snapping.
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.. seealso::
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:doc:`Read more about the Transform Gizmo </editors/3dview/display/gizmo>`.
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.. tip:: Combining with Other Controls
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All of the precision controls detailed on the page can be combined with
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the :doc:`Axis Locking </scene_layout/object/editing/transform/control/axis_locking>` controls and
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used with the different :doc:`Pivot Points </editors/3dview/controls/pivot_point/index>`.
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Snapping
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========
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Move
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----
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.. figure:: /images/scene-layout_object_editing_transform_control_precision_units.png
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:align: right
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:width: 200px
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:figwidth: 200px
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One unit (default zoom level).
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Snapping while moving objects changes the object location in 1 unit increments.
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While in an :doc:`aligned view </editors/3dview/navigate/align>`,
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The increment amount is changed based on the :ref:`zoom level <bpy.ops.view3d.zoom>`.
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For example, at a base zoom level objects are moved in increments of 1 unit (i.e. between the two light gray lines).
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Zooming in enough to see the next set of gray lines will snap in increments of 1/10 of a unit.
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Zooming in further until will snap in increments of 1/100 of a unit and so on until the zoom limit is reached.
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Zooming out will have the opposite effect and
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cause movement to happen by increments of 10, 100 units, etc.
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.. container:: lead
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.. clear
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Rotation
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--------
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Holding :kbd:`Ctrl` will cause rotations of 5 degrees.
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Scale
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-----
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Holding :kbd:`Ctrl` will cause size changes in increments of 0.1 units.
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.. note:: Snapping Modes
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Note that when you are :ref:`Snapping To <bpy.types.ToolSettings.snap_elements_base>`
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something other than *Increment*,
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holding :kbd:`Ctrl` will cause the selection to snap to that nearest element.
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Read more about :doc:`snapping </editors/3dview/controls/snapping>`.
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Precision
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=========
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Holding :kbd:`Shift` during transformations allows for very fine control that does not
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rely on fixed increments. Rather, large movements of the mouse across
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the screen only result in small transformations of the selection.
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In rotation mode the selected element will be rotate in 0.01 degree increments.
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