用c#编写一个程序，能够实现测角交会定点计算，包括前方交会、后方交会、侧方交会、距离交会

好的，根据您的要求，我为您提供以下代码实现：

首先，我们需要定义一个测角交会的类，包括前方交会、后方交会、侧方交会、距离交会的方法：

class Caculation
{
    //前方交会
    public static PointF ForwardIntersection(PointF point1, float angle1, PointF point2, float angle2)
    {
        float k1 = (float)Math.Tan((90 - angle1) * Math.PI / 180);
        float b1 = point1.Y - k1 * point1.X;

        float k2 = (float)Math.Tan((90 - angle2) * Math.PI / 180);
        float b2 = point2.Y - k2 * point2.X;

        float x = (b2 - b1) / (k1 - k2);
        float y = k1 * x + b1;

        return new PointF(x, y);
    }

    //后方交会
    public static PointF BackwardIntersection(PointF point1, float angle1, float distance1, PointF point2, float angle2, float distance2)
    {
        float k1 = (float)Math.Tan((90 - angle1) * Math.PI / 180);
        float b1 = point1.Y - k1 * point1.X;

        float k2 = (float)Math.Tan((90 - angle2) * Math.PI / 180);
        float b2 = point2.Y - k2 * point2.X;

        float x = (b2 - b1) / (k1 - k2);
        float y = k1 * x + b1;

        float distance3 = (float)Math.Sqrt(Math.Pow(point1.X - x, 2) + Math.Pow(point1.Y - y, 2));
        float angle3 = (float)(Math.Atan2(y - point2.Y, x - point2.X) * 180 / Math.PI);

        if (angle3 < 0)
            angle3 += 360;

        return new PointF(x, y);
    }

    //侧方交会
    public static PointF SideIntersection(PointF point1, float angle1, float distance1, PointF point2, float angle2, float distance2)
    {
        float angle3 = (float)(Math.Atan2(point1.Y - point2.Y, point1.X - point2.X) * 180 / Math.PI);

        if (angle3 < 0)
            angle3 += 360;

        float angle4 = (angle3 + angle2) % 360;

        float x = point2.X + distance2 * (float)Math.Cos(angle4 * Math.PI / 180);
        float y = point2.Y + distance2 * (float)Math.Sin(angle4 * Math.PI / 180);

        return new PointF(x, y);
    }

    //距离交会
    public static PointF DistanceIntersection(PointF point1, float angle1, float distance1, PointF point2, float angle2, float distance2)
    {
        float angle3 = (float)(Math.Atan2(point1.Y - point2.Y, point1.X - point2.X) * 180 / Math.PI);

        if (angle3 < 0)
            angle3 += 360;

        float angle4 = (angle3 + angle2) % 360;

        float x1 = point1.X + distance1 * (float)Math.Cos(angle1 * Math.PI / 180);
        float y1 = point1.Y + distance1 * (float)Math.Sin(angle1 * Math.PI / 180);

        float x2 = point2.X + distance2 * (float)Math.Cos(angle4 * Math.PI / 180);
        float y2 = point2.Y + distance2 * (float)Math.Sin(angle4 * Math.PI / 180);

        float x = (x1 + x2) / 2;
        float y = (y1 + y2) / 2;

        return new PointF(x, y);
    }
}

接下来，我们可以在控制台应用程序中使用这些方法：

class Program
{
    static void Main(string[] args)
    {
        PointF point1 = new PointF(100, 100);
        float angle1 = 30;
        float distance1 = 50;

        PointF point2 = new PointF(200, 200);
        float angle2 = 40;
        float distance2 = 70;

        //前方交会
        PointF forwardIntersection = Caculation.ForwardIntersection(point1, angle1, point2, angle2);
        Console.WriteLine("前方交会：({0},{1})", forwardIntersection.X, forwardIntersection.Y);

        //后方交会
        PointF backwardIntersection = Caculation.BackwardIntersection(point1, angle1, distance1, point2, angle2, distance2);
        Console.WriteLine("后方交会：({0},{1})", backwardIntersection.X, backwardIntersection.Y);

        //侧方交会
        PointF sideIntersection = Caculation.SideIntersection(point1, angle1, distance1, point2, angle2, distance2);
        Console.WriteLine("侧方交会：({0},{1})", sideIntersection.X, sideIntersection.Y);

        //距离交会
        PointF distanceIntersection = Caculation.DistanceIntersection(point1, angle1, distance1, point2, angle2, distance2);
        Console.WriteLine("距离交会：({0},{1})", distanceIntersection.X, distanceIntersection.Y);

        Console.ReadKey();
    }
}

这样就可以实现测角交会定点计算了。