/// <summary>
/// Rectangle style constructor
/// </summary>
/// <param name="x">Left most X value</param>
/// <param name="y">Top most Y value</param>
/// <param name="width">Width of the box</param>
/// <param name="height">Height of the box</param>
public BoundingRectangle(float x, float y, float width, float height)
{
center = new Vector2(x + width / 2, y + height / 2);
boundingRectangle = new RectangleFloat(x, y, width, height);
dimensionsFromCenter = new Vector2(width / 2, height / 2);
image = SpriteDatabase.Blank;
}
/// <summary>
/// Bounding sphere style constructor
/// </summary>
/// <param name="center">Center of the box</param>
/// <param name="radius">Radius from center</param>
public BoundingRectangle(Vector2 center, float radius)
{
dimensionsFromCenter = new Vector2(radius, radius);
this.center = center;
boundingRectangle = new RectangleFloat(center.X - radius, center.Y - radius, 2 * radius, 2 * radius);
image = SpriteDatabase.Blank;
}
/// <summary>
/// Bounding sphere style constructor 2
/// </summary>
/// <param name="center">Center of the box</param>
/// <param name="x">X radius from center</param>
/// <param name="y">Y radius from center</param>
public BoundingRectangle(Vector2 center, float x, float y)
{
dimensionsFromCenter = new Vector2(x, y);
this.center = center;
boundingRectangle = new RectangleFloat(center.X - x, center.Y - y, 2 * x, 2 * y);
image = SpriteDatabase.Blank;
}
/// <summary>
/// Copy constructor
/// </summary>
/// <param name="rect">Other rectangle</param>
public RectangleFloat(RectangleFloat rect)
{
X = rect.X;
Y = rect.Y;
Width = rect.Width;
Height = rect.Height;
}
/// <summary>
/// Checks for collision with a rectangle
/// </summary>
/// <param name="rectangle">Rectangle to check collision with</param>
/// <returns>True if there is a collision</returns>
public bool Collides(RectangleFloat rectangle)
{
return boundingRectangle.Intersects(rectangle);
}
/// <summary>
/// Checks for intersection between two rectangles
/// </summary>
/// <param name="rect">Other rectangle</param>
/// <returns>Whether or not the two rectangles intersect</returns>
public bool Intersects(RectangleFloat rect)
{
if (rect.Right < Left || rect.Left > Right || rect.Bottom < Top || rect.Top > Bottom)
{
return false;
}
return true;
}
/// <summary>
/// If rectangle contains another rectangle
/// </summary>
/// <param name="rectangle">Other rectangle</param>
/// <param name="result">If rectangle contains another rectangle</result>
public void Contains(ref RectangleFloat rectangle, out bool result)
{
result = rectangle.Left >= Left && rectangle.Right <= Right && rectangle.Top >= Top && rectangle.Bottom <= Bottom;
}
/// <summary>
/// If rectangle contains another rectangle
/// </summary>
/// <param name="rectangle">Other rectangle</param>
/// <returns>If rectangle contains another rectangle</returns>
public bool Contains(RectangleFloat rectangle)
{
return (rectangle.Left >= Left && rectangle.Right <= Right && rectangle.Top >= Top && rectangle.Bottom <= Bottom);
}
/// <summary>
/// Checks rectangles for intersection
/// </summary>
/// <param name="rect1">First rectangle</param>
/// <param name="rect2">Second rectangle</param>
/// <param name="result">Area of intersection</param>
public static void Intersect(ref RectangleFloat rect1, ref RectangleFloat rect2, out RectangleFloat result)
{
if (rect1.Contains(rect2))
{
result = new RectangleFloat(rect2);
}
else if (rect2.Contains(rect1))
{
result = new RectangleFloat(rect1);
}
else if (!rect1.Intersects(rect2))
{
result = new RectangleFloat();
}
else
{
result = new RectangleFloat(
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));
}
}
/// <summary>
/// Checks rectangles for intersection
/// </summary>
/// <param name="rect1">First rectangle</param>
/// <param name="rect2">Second rectangle</param>
/// <returns>Area of intersection</returns>
public static RectangleFloat Intersect(RectangleFloat rect1, RectangleFloat rect2)
{
RectangleFloat result;
if (rect1.Contains(rect2))
{
result = new RectangleFloat(rect2);
}
else if (rect2.Contains(rect1))
{
result = new RectangleFloat(rect1);
}
else if (!rect1.Intersects(rect2))
{
result = new RectangleFloat();
}
else
{
result = new RectangleFloat(
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;
}
