JavaScript中直线和圆之间的碰撞检测

问题描述

我正在寻找一个明确的答案，也许是一个函数，因为我很慢，它将确定线段和圆是否发生碰撞，在 javascript 中(使用画布)

I'm looking for a definitive answer, maybe a function cos I'm slow, that will determine if a line segment and circle have collided, in javascript (working with canvas)

像下面这样的函数，如果发生碰撞，则返回 true，否则返回 false.我什至可以给你捐一个婴儿.

A function like the one below that simply returns true if collided or false if not would be awesome. I might even donate a baby to you.

function isCollided(lineP1x, lineP1y, lineP2x, lineP2y, circlex, circley, radius) {

    ...
}

我找到了很多公式，像这个，但它们超出了我的范围头.

I've found plenty of formulas, like this one, but they are over my head.

推荐答案

这里你需要一些数学:

如果您一般不知道如何求解方程，这是基本概念.我会把剩下的想法留给你.;) 弄清楚 CD 的长度并不难.

This is the basic concept if you don't know how to solve equations in general. I will leave the rest of the thinking to you. ;) Figuring out CD's length isn't that hard.

如果您要问如何，那就是如何:在 JavaScript 中查找冲突有点复杂.

If you are asking how, that's how: Finding collisions in JavaScript is kind of complicated.

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