<!DOCTYPE html> <html lang="zh"> <head> <meta charset="utf-8" /> <base href="../../../../" /> <script src="page.js"></script> <link type="text/css" rel="stylesheet" href="page.css" /> </head> <body> <h1>[name]</h1> <p class="desc"> The basis for a half-edge data structure, also known as doubly connected edge list (DCEL).<br /> </p> <h2>Constructor</h2> <h3>[name]( [param:VertexNode vertex], [param:Face face] )</h3> <p> [page:VertexNode vertex] - [page:VertexNode] A reference to its destination vertex.<br /> [page:Face face] - [page:Face] A reference to its face.<br /><br /> Creates a new instance of [name]. </p> <h2>Properties</h2> <h3>[property:VertexNode vertex]</h3> <p> Reference to the destination vertex. The origin vertex can be obtained by querying the destination of its twin, or of the previous half-edge. Default is undefined. </p> <h3>[property:HalfEdge prev]</h3> <p> Reference to the previous half-edge of the same face. Default is null. </p> <h3>[property:HalfEdge next]</h3> <p> Reference to the next half-edge of the same face. Default is null. </p> <h3>[property:HalfEdge twin]</h3> <p> Reference to the twin half-edge to reach the opposite face. Default is null. </p> <h3>[property:Face face]</h3> <p> Each half-edge bounds a single face and thus has a reference to that face. Default is undefined. </p> <h2>Methods</h2> <h3>[method:VertexNode head]()</h3> <p>Returns the destination vertex.</p> <h3>[method:VertexNode tail]()</h3> <p>Returns the origin vertex.</p> <h3>[method:Float length]()</h3> <p>Returns the [link:https://en.wikipedia.org/wiki/Euclidean_distance Euclidean length] (straight-line length) of the edge.</p> <h3>[method:Float lengthSquared]()</h3> <p>Returns the square of the [link:https://en.wikipedia.org/wiki/Euclidean_distance Euclidean length] (straight-line length) of the edge.</p> <h3>[method:this setTwin]( [param:HalfEdge edge] )</h3> <p> [page:HalfEdge edge] - Any half-edge.<br /><br /> Sets the twin edge of this half-edge. It also ensures that the twin reference of the given half-edge is correctly set. </p> <h2>Source</h2> <p> [link:https://github.com/mrdoob/three.js/blob/master/examples/jsm/math/ConvexHull.js examples/jsm/math/ConvexHull.js] </p> </body> </html>