private static Rectangle[] GetLShapeInformation(Rectangle first, Rectangle second, RectangleSide side, RectangleSide extendDirection)
{
Rectangle smaller;
Rectangle bigger;
if (side.IsVertical() && first.width < second.width ||
side.IsHorizontal() && first.height < second.height)
{
smaller = first;
bigger = second;
}
else
{
smaller = second;
bigger = first;
side = side.OppositeDirection();
}
if (side.IsVertical())
{
int movedXPos = extendDirection == RectangleSide.Right ? smaller.width : 0;
int movedYPos = side == RectangleSide.Bottom ? bigger.height : 0;
Rectangle newSmaller = new Rectangle(smaller.width, smaller.height + bigger.height, smaller.x, smaller.y - movedYPos);
Rectangle newBigger = new Rectangle(bigger.width - smaller.width, bigger.height, bigger.x + movedXPos, bigger.y);
return(new Rectangle[] { newSmaller, newBigger });
}
else
{
int movedXPos = side == RectangleSide.Left ? bigger.width : 0;
int movedYPos = extendDirection == RectangleSide.Top ? smaller.height : 0;
Rectangle newSmaller = new Rectangle(smaller.width + bigger.width, smaller.height, smaller.x - movedXPos, smaller.y);
Rectangle newBigger = new Rectangle(bigger.width, bigger.height - smaller.height, bigger.x, bigger.y + movedYPos);
return(new Rectangle[] { newSmaller, newBigger });
}
}
private static bool IsLSplitWorthIt(Rectangle first, Rectangle second, RectangleSide side)
{
int horizontalSegment;
int verticalSegment;
bool isAlreadyOptimallySplit;
//Check if splitting even improves the rectangles
if (side.IsVertical())
{
if (first.width < second.width)
{
horizontalSegment = first.width;
verticalSegment = second.height;
}
else
{
horizontalSegment = second.width;
verticalSegment = first.height;
}
isAlreadyOptimallySplit = Rectangle.ShouldSplitAtHorizontalLineSegment(verticalSegment, horizontalSegment);
}
else if (side.IsHorizontal())
{
if (first.height < second.height)
{
horizontalSegment = second.width;
verticalSegment = first.height;
}
else
{
horizontalSegment = first.width;
verticalSegment = second.height;
}
isAlreadyOptimallySplit = !Rectangle.ShouldSplitAtHorizontalLineSegment(verticalSegment, horizontalSegment);
}
else
{
throw new InternalRuntimeException("Logic error.");
}
bool doesSplitMatter = verticalSegment != horizontalSegment;
return(doesSplitMatter && !isAlreadyOptimallySplit);
}