AddCanvasTransform();
}
RandarPointer rpointer = new RandarPointer();
public void AddCanvasTransform()
{

AddDevice();
//设置一个50毫秒启动一次的定时器
time = new Timer(CheckIsContent, rpointer, 0, 50);

}
private void AddDevice()
{
#region 添加闪动的设备
LayoutRoot.Children.Clear();
//添加雷达指针
LayoutRoot.Children.Add(rpointer);
for (int i = 0; i < 15; i++)
{
Device dev = new Device();
//设置X、Y坐标和Z层次
dev.SetValue(Canvas.TopProperty, dev.Y);
dev.SetValue(Canvas.LeftProperty, dev.X);

//设置 dev.Tag为控件的左上角的点坐标和右下角的点坐标
double DevRight = dev.X + 16;
double DevButtom = dev.Y + 16;
dev.SetValue(Canvas.ZIndexProperty, 600);
dev.Tag = dev.X + "|" + dev.Y + "|" + DevRight + "|" + DevButtom;
LayoutRoot.Children.Add(dev);
}
#endregion
}
//添加一个Timer定时器检测当前的指针的位置。
Timer time;
public void CheckIsContent(object state)
{
this.rpointer.Dispatcher.BeginInvoke(new labelDelegete(UpdateLab));

}
public delegate void labelDelegete();
public void UpdateLab()
{
Rectangle rectangle = rpointer.FindName("rectangle") as Rectangle;
//获取到当前雷达指针的左上角点的位置和右下角点的位置，赋值给Tag
double top = -Math.Sin(rpointer.rTransform.Angle) * 253 + 300;
double left = -Math.Cos(rpointer.rTransform.Angle) * 253 + 300;
double right = 300;
double buttom = 300;
rpointer.Tag = left + "|" + top + "|" + right + "|" + buttom;

//循环获取所有的Device控件的位置和当前时间雷达指针是否碰撞
foreach (UIElement ui in LayoutRoot.Children)
{
Device device = ui as Device;
if (device != null)
{
Rectangle rectangleblue = device.Rectangleblue;
//检测雷达指针是否碰撞到设备，
if (CheckCollision(device, rectangleblue, rpointer, rectangle))
{
//检测设备CPU占用值是否大于60%，如果大于则报警
if (device.Value > 60)
{
//让其显示为红色
device.IsOutStrip = true;
}
}
}
}
}
/// <summary>
/// 检查控件的位置是否碰撞在一起
/// </summary>
/// <param name="control1">第一用户控件</param>
/// <param name="controlElem1">第一用户控件内部需要检测是否碰撞的控件</param>
/// <param name="control2">第二用户控件</param>
/// <param name="controlElem2">第二用户控件内部需要检测是否碰撞的控件</param>
/// <returns></returns>
private bool CheckCollision(FrameworkElement control1, FrameworkElement controlElem1, FrameworkElement control2, FrameworkElement controlElem2)
{
// 创建两个Rect结构
Rect rect1 = UserControlBounds(control1);
Rect rect2 = UserControlBounds(control2);

//检测这两个Rect结构是否重合
rect1.Intersect(rect2);
if (rect1 == Rect.Empty)
{
// no collision - GET OUT!
return false;
}
else
{
bool bCollision = false;
Point ptCheck = new Point();

// 更精准的像素级别的碰撞对比
for (int x = Convert.ToInt32(rect1.X); x < Convert.ToInt32(rect1.X + rect1.Width); x++)
{
for (int y = Convert.ToInt32(rect1.Y); y < Convert.ToInt32(rect1.Y + rect1.Height); y++)
{
ptCheck.X = x;
ptCheck.Y = y;

List<UIElement> hits = System.Windows.Media.VisualTreeHelper.FindElementsInHostCoordinates(ptCheck, control1) as List<UIElement>;
if (hits.Contains(controlElem1))
{
// we have a hit on the first control elem, now see if the second elem has a similar hit
List<UIElement> hits2 = System.Windows.Media.VisualTreeHelper.FindElementsInHostCoordinates(ptCheck, control2) as List<UIElement>;
if (hits2.Contains(controlElem2))
{
bCollision = true;
break;
}
}
}
if (bCollision) break;
}
return bCollision;
}
}
/// <summary>
/// 根据需要检测的控件的坐标位置，绘制出需要检测控件的副本Rect控件
/// </summary>
/// <param name="control"></param>
/// <returns></returns>
public Rect UserControlBounds(FrameworkElement control)
{
//重新创建一个Rect结构。
string[] PointDirect = control.Tag.ToString().Split('|');
Point ptTopLeft = new Point(Convert.ToDouble(PointDirect[0]), Convert.ToDouble(PointDirect[1]));
Point ptBottomRight = new Point(Convert.ToDouble(PointDirect[2]), Convert.ToDouble(PointDirect[3]));

return new Rect(ptTopLeft, ptBottomRight);
}