/// <summary>
/// Returns the bounding box containing this box and the given box.
/// </summary>
public void Enlarge(Box2d box)
{
Min.x = Math.Min(Min.x, box.Min.x);
Min.y = Math.Min(Min.y, box.Min.y);
Max.x = Math.Max(Max.x, box.Max.x);
Max.y = Math.Max(Max.y, box.Max.y);
}
/// <summary>
/// Returns true if this bounding box contains the given bounding box.
/// </summary>
public bool Intersects(Box2d a)
{
if (Max.x < a.Min.x || Min.x > a.Max.x)
{
return(false);
}
if (Max.y < a.Min.y || Min.y > a.Max.y)
{
return(false);
}
return(true);
}
/// <summary>
/// Returns the bounding box containing this box and the given box.
/// </summary>
public Box2d Enlarge(Box2d r)
{
return(new Box2d(Math.Min(Min.x, r.Min.x), Math.Max(Max.x, r.Max.x), Math.Min(Min.y, r.Min.y), Math.Max(Max.y, r.Max.y)));
}
public static Box2d CalculateBoundsXZ(Box2d box, Matrix4x4d localToWorld)
{
Box2d bounds = new Box2d(float.PositiveInfinity, float.NegativeInfinity);
Vector3d corners0 = localToWorld * new Vector3d(box.Min.x, 0, box.Min.y);
Vector3d corners1 = localToWorld * new Vector3d(box.Min.x, 0, box.Max.y);
Vector3d corners2 = localToWorld * new Vector3d(box.Max.x, 0, box.Max.y);
Vector3d corners3 = localToWorld * new Vector3d(box.Max.x, 0, box.Min.y);
double x = corners0.x;
double y = corners0.z;
if (x < bounds.Min.x)
{
bounds.Min.x = x;
}
if (y < bounds.Min.y)
{
bounds.Min.y = y;
}
if (x > bounds.Max.x)
{
bounds.Max.x = x;
}
if (y > bounds.Max.y)
{
bounds.Max.y = y;
}
x = corners1.x;
y = corners1.z;
if (x < bounds.Min.x)
{
bounds.Min.x = x;
}
if (y < bounds.Min.y)
{
bounds.Min.y = y;
}
if (x > bounds.Max.x)
{
bounds.Max.x = x;
}
if (y > bounds.Max.y)
{
bounds.Max.y = y;
}
x = corners2.x;
y = corners2.z;
if (x < bounds.Min.x)
{
bounds.Min.x = x;
}
if (y < bounds.Min.y)
{
bounds.Min.y = y;
}
if (x > bounds.Max.x)
{
bounds.Max.x = x;
}
if (y > bounds.Max.y)
{
bounds.Max.y = y;
}
x = corners3.x;
y = corners3.z;
if (x < bounds.Min.x)
{
bounds.Min.x = x;
}
if (y < bounds.Min.y)
{
bounds.Min.y = y;
}
if (x > bounds.Max.x)
{
bounds.Max.x = x;
}
if (y > bounds.Max.y)
{
bounds.Max.y = y;
}
return(bounds);
}
