public new void Update()
{
//并行计算，调高运算速度
Parallel.ForEach <List <VisualElement> >(VisualElementLists, VisualElementList => {
Parallel.ForEach <VisualElement>(VisualElementList, VisualElement => {
VisualElement.Update();
});
//移除消失在屏幕左边的对象
if (VisualElementList.Count > 0)
{
while (VisualElementList.First().X <= -VisualElementList.First().Width)
{
VisualElementList.RemoveAt(0);
}
}
});
//右边对象消失完毕后在右边追加新的对象
if (Mountains.Count > 0)
{
while (Mountains.Last().X + Mountains.Last().Width < in_WorldSize.Width)
{
CreateNewMountain(Mountains.Last().X + Mountains.Last().Width);
}
}
if (Trees.Count > 0)
{
while (Trees.Last().X + Trees.Last().Width < in_WorldSize.Width)
{
CreateNewTree(Trees.Last().X + Trees.Last().Width);
}
}
if (Buildings.Count > 0)
{
while (Buildings.Last().X + Buildings.Last().Width < in_WorldSize.Width)
{
CreateNewBuilding(Buildings.Last().X + Buildings.Last().Width);
}
}
if (Grounds.Count > 0)
{
while (Grounds.Last().X + Grounds.Last().Width < in_WorldSize.Width)
{
CreateNewGround(Grounds.Last().X + Grounds.Last().Width);
}
}
}
/// <summary>
/// Get the element at the specified point. Usually this methods simply return the current element, but an element can return inner elements drawed inside the main elements.
/// Returns a list of elements, where the last element is the upper element and the first element is the background element.
/// </summary>
/// <param name="measure"></param>
/// <param name="area"></param>
/// <param name="point"></param>
/// <returns></returns>
public virtual VisualElementList GetElementsAtPoint(MeasureHelper measure, System.Drawing.RectangleF area, PointF point)
{
VisualElementList list = new VisualElementList();
if (GetDrawingArea(measure, area).Contains(point))
list.Add(this);
return list;
}
