74 lines
2.6 KiB
ReStructuredText
74 lines
2.6 KiB
ReStructuredText
.. _bpy.ops.transform.shear:
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.. _tool-transform-shear:
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*****
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Shear
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*****
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.. reference::
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:Mode: Object and Edit Mode
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:Tool: :menuselection:`Toolbar --> Shear`
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:Menu: :menuselection:`Object/Mesh/Curve/Surface --> Transform --> Shear`
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:Shortcut: :kbd:`Shift-Ctrl-Alt-S`
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Shearing is a form of movement where parallel surfaces move past one another. During this transform,
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movement of the selected elements will occur along the horizontal axis of the current view.
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The axis location will be defined by
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the :doc:`Pivot Point </editors/3dview/controls/pivot_point/index>`.
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Everything that is "above" this axis will move (shear)
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in the same direction as your mouse pointer (but always parallel to the horizontal axis).
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Everything that is "below" the horizontal axis will move in the opposite direction.
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.. figure:: /images/modeling_meshes_editing_mesh_transform_shear_operator-panel.png
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Shear Offset Factor.
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Tool Settings
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=============
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Offset
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How far items are shifted from their original location.
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Axis
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Defines one axis of the imaginary shearing plane.
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Axis Orthographic
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Defines the other axis of the imaginary shearing plane.
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Orientation
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See :doc:`Transform Orientations </editors/3dview/controls/orientation>`.
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Proportional Editing
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See :doc:`Proportional Editing </editors/3dview/controls/proportional_editing>`.
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.. warning::
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The *Axis* and *Axis Orthographic* cannot be the same axis,
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else the imaginary plane is dimensionless and the objects will disappear into a point.
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Usage
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=====
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See below for the result of using *Shear* on a number of different elements.
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.. figure:: /images/modeling_meshes_editing_mesh_transform_shear_mesh.png
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The effects of a Shear transform with different Pivot Points.
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The three frames of the image above show the effects of shearing
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on the selected vertices when the pivot point is altered.
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In middle frame, the :doc:`Pivot Point </editors/3dview/controls/pivot_point/index>`
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is set to *Median Point* and the mouse was moved to the left during the transform.
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In right frame, the *Pivot Point* is set to the 3D cursor which is located above the mesh.
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When the mouse is moved to the left during a *Shear* transform,
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the selected vertices are moved to the right as they are below the horizontal axis.
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.. tip:: Shear Transform Magnitude
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The magnitude of the *Shear* transform applied to the selected elements is
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directly proportional to the distance from the horizontal axis.
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i.e. the further it is away from the axis, the greater the movement.
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.. figure:: /images/modeling_meshes_editing_mesh_transform_shear_objects.png
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The effects of a Shear transform on objects with different Pivot Points.
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