/// <inheritdoc />
/// <remarks>
/// Performs the post-processing after placing the rectangle <paramref name="rectJustPlaced"/>
/// This includes a "repair" of all the free rectangles that intersects with a <paramref name="rectJustPlaced"/> and removal of free rectangles that are fully included in other free rectangle
/// </remarks>
/// <exception cref="ArgumentNullException">Is thrown when the <paramref name="freeRectangles"/> is null</exception>
public void PostProcess(List <PPRect> freeRectangles, PPRect rectJustPlaced)
{
if (freeRectangles == null)
{
throw new ArgumentNullException($"The {nameof(freeRectangles)} cannot be null");
}
List <PPRect> rectsToAdd = new List <PPRect>();
PPRect[] resultingFreeRects = new PPRect[4];
for (int i = 0; i < freeRectangles.Count;)
{
if (freeRectangles[i].IntersectsWith(rectJustPlaced))
{
//This is very similar to splitting a free rectangle but it is not the same, because this code does not assume (unlike the IFreeRectangleSplitter) that a rectangles are placed into a bottom-left of the free rectangle
//Calculate FreeRect \ rectJustPlaced and split it into at most four free rects
//make it always four (save NEW's and just set 0 dimension to nonused, then filter these upon addition)
resultingFreeRects[0] = new PPRect(freeRectangles[i].Left, freeRectangles[i].Top, rectJustPlaced.Left, freeRectangles[i].Bottom); //LEFT
resultingFreeRects[1] = new PPRect(freeRectangles[i].Left, freeRectangles[i].Top, freeRectangles[i].Right, rectJustPlaced.Top); //TOP
resultingFreeRects[2] = new PPRect(rectJustPlaced.Right, freeRectangles[i].Top, freeRectangles[i].Right, freeRectangles[i].Bottom); //RIGHT
resultingFreeRects[3] = new PPRect(freeRectangles[i].Left, rectJustPlaced.Bottom, freeRectangles[i].Right, freeRectangles[i].Bottom); //BOTTOM
//(PPRect freeRect1, PPRect freeRect2) = splitter.SplitFreeRectangle(freeRectangles[i], rectJustPlaced);
freeRectangles.RemoveAt(i);
//rectsToAdd.Add(freeRect1);
//rectsToAdd.Add(freeRect2);
rectsToAdd.AddRange(resultingFreeRects.Where(x => x.Width > 0 && x.Height > 0));
}
else
{
i++;
}
}
freeRectangles.AddRange(rectsToAdd);
List <PPRect> rectsToRemove = new List <PPRect>();
for (int i = 0; i < freeRectangles.Count; i++)
{
for (int j = 0; j < freeRectangles.Count; j++)
{
if (i != j && freeRectangles[i].Contains(freeRectangles[j]))
{
rectsToRemove.Add(freeRectangles[j]);
}
}
}
foreach (var toRemove in rectsToRemove)
{
freeRectangles.Remove(toRemove);
}
}
