在具有特定标题的段上获取圆上的随机点

Question

我有一个圆，有特定的半径。在圆圈内，我有一个带有 X、Y 坐标的点。我也有一个标题，例如 210。如何在从该点到圆边缘绘制的线段上获得一个随机点 INSIDE THE CIRCLE？谢谢！

Answer 1

        double radiusCircle = 10;
        double y = -3;
        double x = -Math.Sqrt(3 * 9);
        double angleRad = Math.Atan2(y, x);
        double angleDeg = angleRad * 180 / Math.PI;   // 210 (-150) degrees

        double distancePointCenter = Math.Sqrt(x * x + y * y);
        double distancePointMargin = radiusCircle - distancePointCenter;

        Random rand = new Random(123);

        for (int i = 0 i < 10; i++)
        {   // Generate 10 random points
            double randomPointDistToCenter = distancePointCenter + distancePointMargin * rand.NextDouble();
            double xRandomPoint = randomPointDistToCenter * Math.Cos(angleRad);
            double yRandomPoint = randomPointDistToCenter * Math.Sin(angleRad);
        }

在具有特定标题的段上获取圆上的随机点

Get random point on circle on a segment that has a specific heading

c#

math

vector

geometry