如何用贝塞尔曲线最佳逼近几何弧？ [英] How to best approximate a geometrical arc with a Bezier curve?

问题描述

使用贝塞尔曲线近似法绘制二维弧时，如果您有一个圆的中心点，起点和终点角以及半径，那么如何计算两个控制点？

When drawing an Arc in 2D, using a Bezier Curve approximation, how does one calculate the two control points given that you have a center point of a circle, a start and end angle and a radius?

推荐答案

在StackOverflow文章中不容易解释这一点，特别是因为证明它会涉及许多详细的步骤。但是，您所描述的是一个常见问题，并且有许多详尽的解释。请参阅 此处 和 这里 ;我非常喜欢＃2，并已使用它。

This isn't easily explained in a StackOverflow post, particularly since proving it to you will involve a number of detailed steps. However, what you're describing is a common question and there's a number of thorough explanations. See here and here; I like #2 very much and have used it before.

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