protected override Tuple <bool, double> allocateY(Size size)
{
var barrier = DanmakuLib.getPosition(pool.FindAll((i) =>
{
var x = ((TranslateTransform)i.RenderTransform).X;
return(x - DanmakuConfig.HORIZONTAL_PADDING < 0);
}));
return(DanmakuLib.getSlotFromTop(size, offset, canvas.Height, barrier));
}
protected override Tuple <bool, double> allocateY(Size size)
{
// 获取出可能阻挡新弹幕的旧弹幕
var barrier = DanmakuLib.getPosition(pool.FindAll((i) =>
{
var x = ((TranslateTransform)i.RenderTransform).X;
if (x <= 0)
{
x = canvas.Width;
}
return(i.ActualWidth + x + DanmakuConfig.HORIZONTAL_PADDING > canvas.Width);
}));
return(DanmakuLib.getSlotFromTop(size, offset, canvas.Height, barrier));
}
protected override Tuple <bool, double> allocateY(Size size)
{
var barrier = DanmakuLib.getPosition(pool);
return(DanmakuLib.getSlotFromBottom(size, offset, canvas.Height, barrier));
}