public OverlayInfo Invert(Size srcSize, Size overSize)
{
var rect = GetRectangle(overSize);
var info = Clone();
var invertedRect = new RectangleD(
-rect.X,
-rect.Y,
srcSize.Width,
srcSize.Height
);
info.Angle = -Angle;
info.X = (int)Math.Ceiling(invertedRect.X);
info.Y = (int)Math.Ceiling(invertedRect.Y);
info.Width = (int)Math.Floor(invertedRect.Right) - info.X;
info.Height = (int)Math.Floor(invertedRect.Bottom) - info.Y;
info.SetCrop(RectangleD.FromLTRB(
info.X - invertedRect.X,
info.Y - invertedRect.Y,
invertedRect.Right - info.Width - info.X,
invertedRect.Bottom - info.Height - info.Y
));
return(info.Resize(srcSize, invertedRect.Size, rect.Size, overSize));
}
public OverlayInfo Shrink(Size srcSize, Size overSize)
{
var info = Clone();
var excess = Rectangle.FromLTRB(
Math.Max(0, -info.X),
Math.Max(0, -info.Y),
Math.Max(0, info.Width + info.X - srcSize.Width),
Math.Max(0, info.Height + info.Y - srcSize.Height));
var widthCoef = (double)overSize.Width / info.Width;
var heightCoef = (double)overSize.Height / info.Height;
info.Width -= excess.Left + excess.Right;
info.Height -= excess.Top + excess.Bottom;
info.X = Math.Max(0, info.X);
info.Y = Math.Max(0, info.Y);
var crop = info.GetCrop();
info.SetCrop(RectangleD.FromLTRB(
crop.Left + excess.Left * widthCoef,
crop.Top + excess.Top * heightCoef,
crop.Right + excess.Right * widthCoef,
crop.Bottom + excess.Bottom * heightCoef));
return(info);
}