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The PlanarMapDcelHalfedge_2concept is a refinement of the TopologicalMapDcelHalfedge concept. The requirements of the latter are the requirements of the former. In addition the PlanarMapDcelHalfedge_2should contain the following geometric types and methods.
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a curve associated with the halfedge.
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| the curve. |
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| set the curve in h to . | ||