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      查找圆边上的坐标

      Finding the coordinates on the edge of a circle(查找圆边上的坐标)

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              • 本文介绍了查找圆边上的坐标的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                问题描述

                使用 C#:

                如果我有圆心坐标和半径,我如何获得任意给定度数的圆边缘的 (x, y) 坐标?

                How do I get the (x, y) coordinates on the edge of a circle for any given degree, if I have the center coordinates and the radius?

                可能涉及到 SIN、TAN、COSIN 和其他十年级数学... :)

                There is probably SIN, TAN, COSIN and other grade ten math involved... :)

                推荐答案

                以下是适用于任何语言的数学解决方案:

                Here's the mathematical solution which can be applied in any language:

                x = x0 + r * cos(theta)
                y = y0 + r * sin(theta)
                

                x0y0 是圆心坐标,r 是半径,theta 在弧度.角度是从 x 轴逆时针方向测量的.

                x0 and y0 are the coordinates of the centre, r is the radius, and theta is in radians. The angle is measured anticlockwise from the x-axis.

                这是 C# 的代码,特别是如果您的角度以度为单位:

                This is the code for C# specifically if your angle is in degrees:

                double x = x0 + r * Math.Cos(theta * Math.PI / 180);
                double y = y0 + r * Math.Sin(theta * Math.PI / 180);
                

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