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分别用两条线段的两个端点与另外一条线段[叉积]计算三角形的面积， 若计算的两次面积的乘积都不大于零则相交。In Reply To:线段相交判断有什么好方法吗? Posted by:fxlbest at 2005-10-25 16:52:13 Followed by: Post your reply here: |
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