Manipulating Components Symmetrically
Manipulating Components Symmetrically
Symmetrical manipulation lets you manipulate points and other components and maintain the symmetry of an object. Any manipulation performed on components on one side are mirrored to the corresponding components on the other side. Components that lie directly on the plane of symmetry are “locked down”; they can be translated or moved only along the plane of symmetry itself.
There are two basic ways of manipulating symmetrically:
• In “live” mode, Softimage finds the symmetric components on-the-fly. This requires that the object’s current shape is symmetric.
• With a symmetry map, there is a permanent correspondence between symmetric points. This means that corresponding components can still be moved automatically even if the object is no longer symmetrical, for example, if an envelope, a twist, or any other deformer has been applied.
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Symmetry mode does not work with hair.
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Activating Symmetrical Manipulation
To toggle symmetry mode on or off, click Sym on the Transform panel.

• If there is a symmetry map on the object, it will be used.
• If there is no symmetry map, the settings in your Symmetry preferences are used instead. You can right-click on Sym to quickly choose a plane of symmetry or choose Symmetry Properties to set more options.
Tools that Work with Sym Mode
Component manipulation in Sym mode works with the following tools:
• Scale tool on points, edges, and polygons (x key)
• Rotate tool on points, edges, and polygons (c key)
• Translate tool on points, edges, and polygons (v key)
• Tweak Component tool on points, edges, and polygons (m key)
• Move Point tool
• View Plane Pivot Transform tool on points, edges, and polygons
• Paint Push and other brush-based tools
• Nudging
Appologies for my inadequate explanation before. Hope this better explains it.
Note; if you are trying to manipulate 2 seperate objects symmetrically, you will need to Right click the "sym" button in the transform toolbar click 'properties" and set it to "origin". Of course the 2 objects will stradle whatever axis you set them to.