Planar Symmetry Recognition Feature
This section describes how to construct and access the element tree for Planar Symmetry Recognition feature. It also shows how to create, redefine, and access the properties of this feature.
Introduction
The Planar Symmetry Recognition feature allows you to identify and modify geometry that is symmetric with respect to a plane. The modifications made to the geometry on one side are automatically propagated to the other side and the symmetry is kept.
The Planar Symmetry Recognition feature identifies symmetrical geometry in the following ways:
• You can collect two seed surfaces or surface regions that are symmetric. The feature computes the plane of symmetry, and finds all pairs of neighboring surfaces and surface regions which are symmetric with respect to the symmetry plane. The propagation ends when non-symmetric neighboring surfaces are found.
The two seed surfaces or regions must belong to:
◦ The solid geometry.
◦ A single quilt.
◦ Two quilts.
• You can collect a seed surface or surface region and a plane of symmetry. The feature finds the mirror image of the seed surface or surface region and, finds all the pairs of neighboring surfaces and surface regions which are symmetric with respect to the symmetry plane.
According to the correspondence between the geometry of the symmetrical members, the following variation of planar symmetry recognition are possible:
• Identical—There is exact correspondence between the surfaces of the symmetrical members as well as between the intersection edges defined by these members and the surrounding geometry.
• Similar—There is exact correspondence between the surfaces of the symmetrical members, but there is no exact correspondence between the intersection edges defined by these members and the surrounding geometry. The number of intersection loops must be the same, but the type of edges, number of edges in each intersection loop and the intersected model surfaces do not have to be the same.
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Note:
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The group header of the Planar Symmetry Recognition feature behaves as a standard feature. You can extract the header element tree in Creo TOOLKIT.
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