/*
* 获取控件所在的区域算法
*/
PressPointLocation GetPointLocation(Point point)
{
PressPointLocation location = PressPointLocation.None;
double tempwidth = ActualWidth / 3;
if (point.X < tempwidth)
{
location |= PressPointLocation.Left;
}
else if (point.X > tempwidth * 2)
{
location |= PressPointLocation.Right;
}
else
{
location |= PressPointLocation.XCenter;
}
double tempheight = ActualHeight / 3;
if (point.Y < tempheight)
{
location |= PressPointLocation.Top;
}
else if (point.Y > tempheight * 2)
{
location |= PressPointLocation.Bottom;
}
else
{
location |= PressPointLocation.YCenter;
}
Debug.WriteLine(location.ToString());
return(location);
}
/*
* 按下时的事件处理，两个步骤
* 1、首先判断当前按下去的位置在控件的那个区域（控件共分为9个区域，详见PressPointLocation定义）
* 2、根据按下去的位置，对控件做不同的效果
*/
protected override void OnPointerPressed(Windows.UI.Xaml.Input.PointerRoutedEventArgs e)
{
// 获得当前区域位置
PressPointLocation location = GetPointLocation(e.GetCurrentPoint(this).Position);
// 开始对控件做效果处理
if (location == (PressPointLocation.Left | PressPointLocation.YCenter))
{// 左中
projection.RotationY = angle;
projection.CenterOfRotationX = 1;
}
else if (location == (PressPointLocation.Left | PressPointLocation.Top))
{// 左上
projection.RotationX = -angle;
projection.RotationY = angle;
projection.CenterOfRotationX = 1;
projection.CenterOfRotationY = 1;
}
else if (location == (PressPointLocation.Top | PressPointLocation.XCenter))
{// 上中
projection.RotationX = -angle * 2;
projection.CenterOfRotationY = 1;
}
else if (location == (PressPointLocation.Right | PressPointLocation.Top))
{// 右上
projection.RotationY = projection.RotationX = -angle;
projection.CenterOfRotationX = 0;
projection.CenterOfRotationY = 1;
}
else if (location == (PressPointLocation.Right | PressPointLocation.YCenter))
{// 右中
projection.RotationY = -angle;
projection.CenterOfRotationX = 0;
}
else if (location == (PressPointLocation.Right | PressPointLocation.Bottom))
{// 右下
projection.RotationX = angle;
projection.RotationY = -angle;
projection.CenterOfRotationX = 0;
projection.CenterOfRotationY = 0;
}
else if (location == (PressPointLocation.Bottom | PressPointLocation.XCenter))
{// 下中
projection.RotationX = angle * 2;
projection.CenterOfRotationY = 0;
}
else if (location == (PressPointLocation.Left | PressPointLocation.Bottom))
{// 左下
projection.RotationY = projection.RotationX = angle;
projection.CenterOfRotationX = 1;
projection.CenterOfRotationY = 1;
}
else if (location == (PressPointLocation.XCenter | PressPointLocation.YCenter))
{// 正中
CompositeTransform transform = RenderTransform as CompositeTransform;
transform.CenterX = ActualWidth / 2;
transform.CenterY = ActualHeight / 2;
transform.ScaleX = 0.9;
transform.ScaleY = 0.9;
}
}
