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二维计算几何基础 - OI Wiki
什么的。 我们记录其横纵坐标值即可。用 pair 或开结构体记录均可。. 在极坐标系下,用极坐标表示即可。记录其极径与极角。 向量¶. 由于向量的坐标表示与点相同,所以只需要像点一样存向量即可(当然点不是向量)。

计算几何算法5. 直线、线段和平面相交(2D和3D) – 陈童的博客
如图所示: 应该首先测试相交点的最普遍的情况,也就是说n 1 ·(n 2 ×n 3)¹0,它可以排除其它的情况。当相交点是一个特定点时,它由以下公式给出: 可以通过P 0 是否满足p 1 ,p 2 和p 3 的参数方程来验证。. 然而,当分母n 1 ·(n 2 ×n 3)非常小时,在计算性能上存在问题。在这种情况下,最好的办法是 ...

(PDF) Programming-challenges | Jeffrey Young - Academia.edu
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