创建Wind Dirction控件 - .Net Framework 2.0 [英] Create Wind Dirction Control - .Net Framework 2.0

问题描述

您好，

我有什么方法可以绘制并创建风向控制 - 箭头围绕圆圈旋转，如参考图像

请帮助我如何开始和创建相同的参考  image

解决方案

您好，

您使用哪种技术来实现此目的？

这个论坛正在谈论Windows Forms，所以我用WinForm做了一个简单的演示，请参考下面的内容：

 public partial class Form1：Form 
 {
 public Form1（）
 {
 InitializeComponent（）; 
} 
 
 private void Form1_Paint（object sender，PaintEventArgs e）
 {
 DrawCircle（）; 
} 
 
 private void button1_Click（object sender，EventArgs e）
 {
 using（Graphics g1 = this.CreateGraphics（））
 {
 g1.Clear（this.BackColor）; 
} 
 DrawCircle（）; 
 
 Graphics g = this.CreateGraphics（）; 
 double angle = Convert.ToDouble（textBox1.Text）; 
倍X，Y; 
 int x，y; 
 int i =计算（角度，出X，出Y）; 
 x = Convert.ToInt32（Math.Round（X））; 
 y = Convert.ToInt32（Math.Round（Y））; 
 Point point1 = new Point（0,0）; 
 point1.X = x + 55; 
 point1.Y = y + 55; 
 g.FillEllipse（Brushes.Black，point1.X，point1.Y，10,10）; 
} 
 
 public void DrawCircle（）
 {
 Graphics g = this.CreateGraphics（）; 
 Pen p = new Pen（Color.Blue，2）; 
 g.DrawEllipse（p，10,10,100,100）; 
} 
 
 public int计算（双角，双X，双Y）
 {
 X = 50 * Math.Cos（ConvertDegreesToRadians（angle）） ; 
 Y = 50 * Math.Sin（ConvertDegreesToRadians（angle））; 
返回0; 
} 
 
 //将度数转换为弧度
 public static double ConvertDegreesToRadians（double degrees）
 {
 double radians =（Math.PI / 180） *度; 
 return（弧度）; 
} 
} 

希望这会有所帮助！

最好的问候，

Stanly

Hello,

Is there any way I can draw and create Wind Directional control - Arrow rotating around circle based on value like the reference image

Please help how can I start and create the same as per the reference  image

解决方案

Hi,

So which technology do you use to achieve this purpose?

This forum is talking about Windows Forms, so I make a simple demo with WinForm, please refer to it as below:

    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Paint(object sender, PaintEventArgs e)
        {
            DrawCircle();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            using (Graphics g1 = this.CreateGraphics())
            {
                g1.Clear(this.BackColor);
            }
            DrawCircle();

            Graphics g = this.CreateGraphics();            
            double angle = Convert.ToDouble(textBox1.Text);
            double X, Y;
            int x, y;
            int i = Calculate(angle, out X, out Y);
            x = Convert.ToInt32(Math.Round(X));
            y = Convert.ToInt32(Math.Round(Y));
            Point point1 = new Point(0, 0);
            point1.X = x + 55;
            point1.Y = y + 55;
            g.FillEllipse(Brushes.Black, point1.X, point1.Y, 10, 10);
        }

        public void DrawCircle()
        {
            Graphics g = this.CreateGraphics();
            Pen p = new Pen(Color.Blue, 2);
            g.DrawEllipse(p, 10, 10, 100, 100);
        }
                
        public int Calculate(double angle, out double X, out double Y)
        {
            X = 50 * Math.Cos(ConvertDegreesToRadians(angle));
            Y = 50 * Math.Sin(ConvertDegreesToRadians(angle));
            return 0;
        }

        //Convert Degrees To Radians
        public static double ConvertDegreesToRadians(double degrees)
        {
            double radians = (Math.PI / 180) * degrees;
            return (radians);
        }
    }

Hope this helps!

Best Regards,

Stanly

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