public static bool Equals(Size size1, Size size2)
{
if (size1.IsEmpty)
{
return size2.IsEmpty;
}
return (size1.Width.Equals(size2.Width) && size1.Height.Equals(size2.Height));
}
public Rect(Point location, Size size)
{
if (size.IsEmpty)
{
_x = 0;
_y = 0;
_width = 0;
_height = 0;
}
else
{
_x = location._x;
_y = location._y;
_width = size._width;
_height = size._height;
}
}
public static Rect Inflate(Rect rect, Size size)
{
rect.Inflate(size._width, size._height);
return rect;
}
public void Inflate(Size size)
{
Inflate(size._width, size._height);
}
public Rect(Size size)
{
if (size.IsEmpty)
{
_x = 0;
_y = 0;
_width = 0;
_height = 0;
}
else
{
_x = _y = 0.0;
_width = size.Width;
_height = size.Height;
}
}
public bool Equals(Size value)
{
return Equals(this, value);
}
static Size()
{
SEmpty = CreateEmptySize();
}
public static Point GetClippingPoint(Size size, Point s, Point t)
{
double[] sides = new double[4];
sides[0] = (s.X - size.Width / 2.0 - t.X) / (s.X - t.X);
sides[1] = (s.Y - size.Height / 2.0 - t.Y) / (s.Y - t.Y);
sides[2] = (s.X + size.Width / 2.0 - t.X) / (s.X - t.X);
sides[3] = (s.Y + size.Height / 2.0 - t.Y) / (s.Y - t.Y);
double fi = 0;
for (int i = 0; i < 4; i++)
{
if (sides[i] <= 1)
fi = Math.Max(fi, sides[i]);
}
if (fi == 0)
{
fi = double.PositiveInfinity;
for (int i = 0; i < 4; i++)
fi = Math.Min(fi, Math.Abs(sides[i]));
fi *= -1;
}
return t + fi * (s - t);
}
