PROSAGA码农传奇-乐高机器人-使用WPF进行方向盘转换

使用WPF进行方向盘转换

作者: 苞米地里的蒙面妖
发布时间: 2025-01-11 02:11:07 (26天前)
转自：

<div class =“post-text”itemprop =“text”>
  <P>
    我做了类似的事情
  </p>
  <P>
    您需要2个参考点来计算方向盘中心的旋转和鼠标的位置，如下所示
  </p>
   <pre>
    <code>
      private void Steering_MouseMove(object sender, MouseEventArgs e)
{
    if (e.LeftButton == MouseButtonState.Pressed)
    {
        var control = sender as Ellipse;
        var point = e.GetPosition(control);
        var centre = new Point(control.Width / 2, control.Height / 2);
        var vector = point  - centre
        Steering.Angle = (Math.Atan2(vector.X,vector.Y) * 180 / Math.PI);
        //note default behaviour of Atan2 is Angle 0 = East and Anti Clockwise is a positive angle, 
        //by swapping X and Y north is now 0 angle and clockwise is positive
    }
}

</code>
  </pre>
  <P>
    那么你只需要绑定旋转
  </p>
   <pre>
    <code>
      <Ellipse 
    MouseMove="Steering_MouseMove" >
    <Ellipse.RenderTransform>
        <RotateTransform Angle="{Binding Steering.Angle}" CenterX="0.5" CenterY="0.5"/>
    </Ellipse.RenderTransform>
</Ellipse>

</code>
  </pre>
</DIV>