namespace DebuggingEssentials
{
	public class CullList
	{
		public SortedFastList<CullItem> cullItems;

		public int startIndex;

		public int endIndex;

		public int currentCalcCullItem;

		public GUIChangeBool show = new GUIChangeBool(value: true);

		public float tStamp;

		public DrawResult lastDrawResult;

		public int lastAddedIndex;

		public CullList(int capacity)
		{
			cullItems = new SortedFastList<CullItem>(capacity);
		}

		public bool Draw(CullList currentCullItems, ref double startHeight)
		{
			CullItem cullItem = cullItems.items[currentCalcCullItem++];
			DrawResult drawResult = cullItem.DoDraw();
			if (drawResult != DrawResult.DontDraw)
			{
				SortedFastList<CullItem> sortedFastList = currentCullItems.cullItems;
				cullItem.Draw(ref startHeight);
				sortedFastList.Add(cullItem);
				if (drawResult == DrawResult.DrawHeaderAndRemoveLastHeader)
				{
					double num = sortedFastList.items[lastAddedIndex].endHeight - sortedFastList.items[lastAddedIndex].startHeight;
					startHeight -= num;
					sortedFastList.RemoveAt(lastAddedIndex);
					for (int i = lastAddedIndex; i < sortedFastList.Count; i++)
					{
						sortedFastList.items[i].startHeight -= num;
						sortedFastList.items[i].endHeight -= num;
					}
				}
				if (drawResult == DrawResult.DrawHeader || drawResult == DrawResult.DrawHeaderAndRemoveLastHeader)
				{
					lastAddedIndex = sortedFastList.Count - 1;
				}
				currentCullItems.lastDrawResult = drawResult;
			}
			if (currentCalcCullItem >= cullItems.Count)
			{
				return false;
			}
			return true;
		}

		public void Cull(Double2 heights)
		{
			if (cullItems.Count != 0)
			{
				startIndex = Helper.BinarySearch(cullItems.items, cullItems.Count, heights.x);
				if (cullItems.items[startIndex].endHeight <= heights.x)
				{
					startIndex++;
				}
				if (startIndex >= cullItems.Count)
				{
					startIndex = cullItems.Count - 1;
				}
				endIndex = Helper.BinarySearch(cullItems.items, cullItems.Count, heights.y);
				if (endIndex + 1 < cullItems.Count && cullItems.items[endIndex + 1].startHeight < heights.y)
				{
					endIndex++;
				}
			}
		}
	}
}