CGAL 6.1 - 2D Straight Skeleton and Polygon Offsetting

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StraightSkeleton_2 Concept Reference
Reference Manual » Concepts

## Definition

Refines
  `HalfedgeDS`

The concept `StraightSkeleton_2` describes the requirements for the data structure used to represent a straight skeleton. It refines the concept `HalfedgeDS` and adds additional requirements on the nested types `Vertex`, `Halfedge`, and `Face` of the halfedge data structure.

Has models
  `CGAL::Straight_skeleton_2`

Attention
  This concept explicitly protects all the modifying operations of the base `HalfedgeDS` concept. Only the algorithm classes, or clients explicitly bypassing the protection mechanism, can modify a straight skeleton.

## Types
typedef unspecified_type | Vertex
| A model of the `StraightSkeletonVertex_2` concept used to represent the vertices of the straight skeleton.
typedef unspecified_type | Halfedge
| A model of the `StraightSkeletonHalfedge_2` concept used to represent the halfedges of the straight skeleton.
typedef unspecified_type | Face
| Any model of the `StraightSkeletonFace_2` concept used to represent the faces of the straight skeleton.