AABB
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CostTable
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WanderBehavior

Twin函数

HalfEdge类中的twin()函数返回与当前HalfEdge共享面的另一个HalfEdge。

语法

twin()

返回值

返回类型为HalfEdge的另一个HalfEdge,如果当前HalfEdge没有共享面,则返回null。

示例

const edge1 = new HalfEdge();
const edge2 = new HalfEdge();

edge1.setTwin(edge2); // edge1和edge2共享面

console.log(edge1.twin()); // 输出edge2
console.log(edge2.twin()); // 输出edge1

注意事项

  • twin()函数只返回当前HalfEdge的对偶HalfEdge,不会改变HalfEdge之间的关系。
  • 如果当前HalfEdge没有对偶HalfEdge,则返回null。
  • 通过setTwin()函数可以设置当前HalfEdge的对偶HalfEdge。
  • HalfEdge的对偶HalfEdge也必须是HalfEdge类的实例。