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The concept GetPlacement describes the requirements for the policy function object which gets the collapse placement of an edge, that is, the new position of the vertex that remains after a halfedge-collapse operation.
The placement returned is a boost::optional value (i.e., it can be absent). An absent result indicates that the remaining vertex must be kept in place, not moved to a new position.
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The type of the edge profile cache. Must be a model of the EdgeProfile concept.
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| The point type for the surface vertex. Must be a model of Point_3. | |
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| The type of the result (an optional point). |
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| Computes and returns the placement, that is, the position of the vertex which replaces the collapsing edge (represented by its profile). | ||