我如何才能知道一个点附近一定行？ [英] How can I tell if a point is nearby a certain line?

问题描述

您好，的

Hi there,

我问：<一href="http://stackoverflow.com/questions/907390/how-can-i-tell-if-a-point-belongs-to-a-certain-line">How我可以告诉大家，如果一个点属于某一行？之前，我找到了一个合适的答案，所以我非常感谢你。

I asked "How can I tell if a point belongs to a certain line?" before and I found a suitable answer so thank you very much.

现在，我想知道如何判断某个点的代码的到我行。

Now, I would like to know how to tell if a certain point is close to my line.

推荐答案

您需要计算直角距离到该行。然后，你必须定义什么是亲密是和测试，如果它是距离之内。

You need to calculate the right angle distance to the line. Then you have to define what "close" is and test if it is within that distance.

你想要的公式是：

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