public static void Intersect(ref Rectanglef rect1, ref Rectanglef rect2, out Rectanglef result)
{
if (rect1.Contains(rect2))
result = new Rectanglef(rect2);
else if (rect2.Contains(rect1))
result = new Rectanglef(rect1);
else if (!rect1.Intersects(rect2))
result = new Rectanglef();
else
{
result = new Rectanglef(
Math.Max(rect1.X, rect2.X),
Math.Max(rect1.Y, rect2.Y),
Math.Min(rect1.Right, rect2.Right) - Math.Max(rect1.Left, rect2.Left),
Math.Min(rect1.Bottom, rect2.Bottom) - Math.Max(rect1.Top, rect2.Top));
}
}
public static Rectanglef Intersect(Rectanglef rect1, Rectanglef rect2)
{
Rectanglef result;
if (rect1.Contains(rect2))
result = new Rectanglef(rect2);
else if (rect2.Contains(rect1))
result = new Rectanglef(rect1);
else if (!rect1.Intersects(rect2))
result = new Rectanglef();
else
{
result = new Rectanglef(
Math.Max(rect1.X, rect2.X),
Math.Max(rect1.Y, rect2.Y),
Math.Min(rect1.Right, rect2.Right) - Math.Max(rect1.Left, rect2.Left),
Math.Min(rect1.Bottom, rect2.Bottom) - Math.Max(rect1.Top, rect2.Top));
}
return result;
}
/// <summary>
/// Resolve inter penetration between two moveable objects
/// </summary>
/// <param name="overlap">Area of interpenetration</param>
/// <param name="playerRectangle">Rectangle of the player</param>
public void ResolveInterPenetrationWall(Rectanglef overlap, Rectanglef playerRectangle)
{
// If this happens, we've gotten stuck
if (overlap.Contains(playerRectangle))
{
int i = 0;
}
// If same width, collision is vertical
else if (Math.Abs(overlap.Width - playerRectangle.Width) < 0.5)
{
if (Math.Abs(overlap.Y - playerRectangle.Y) < 0.5)
{
position.Y += (overlap.Height + 1);
}
else
{
position.Y -= (overlap.Height + 1);
}
}
// If same height, collision is horizontal
else if (Math.Abs(overlap.Height - playerRectangle.Height) < 0.5)
{
if (Math.Abs(overlap.X - playerRectangle.X) < 0.5)
{
position.X += (overlap.Width + 1);
}
else
{
position.X -= (overlap.Width + 1);
}
}
else if (overlap.Width < overlap.Height)
{
if (Math.Abs(overlap.X - playerRectangle.X) < 0.0001)
{
position.X += (overlap.Width + 1);
}
else
{
position.X -= (overlap.Width + 1);
}
}
else
{
if (Math.Abs(overlap.Y - playerRectangle.Y) < 0.0001)
{
position.Y += (overlap.Height + 1);
}
else
{
position.Y -= (overlap.Height + 1);
}
}
}
