/// <summary>
/// Returns the bounding box containing this box and the given box.
/// </summary>
public void Enlarge(Box2f 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);
}
public static Box2f CalculateBoundsXZ(Box2f box, Matrix4x4f localToWorld)
{
Box2f bounds = new Box2f(float.PositiveInfinity, float.NegativeInfinity);
Vector3f corners0 = localToWorld * new Vector3f(box.Min.x, 0, box.Min.y);
Vector3f corners1 = localToWorld * new Vector3f(box.Min.x, 0, box.Max.y);
Vector3f corners2 = localToWorld * new Vector3f(box.Max.x, 0, box.Max.y);
Vector3f corners3 = localToWorld * new Vector3f(box.Max.x, 0, box.Min.y);
float x = corners0.x;
float 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);
}
public static Box2i CalculateBoundsXZ(Box2f box, Matrix4x4f localToWorld)
{
Box2i bounds = new Box2i(int.MaxValue, int.MinValue);
Vector3f corners0 = localToWorld * new Vector3f(box.Min.x, 0, box.Min.y);
Vector3f corners1 = localToWorld * new Vector3f(box.Min.x, 0, box.Max.y);
Vector3f corners2 = localToWorld * new Vector3f(box.Max.x, 0, box.Max.y);
Vector3f corners3 = localToWorld * new Vector3f(box.Max.x, 0, box.Min.y);
int x = (int)Math.Round(corners0.x);
int y = (int)Math.Round(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 = (int)Math.Round(corners1.x);
y = (int)Math.Round(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 = (int)Math.Round(corners2.x);
y = (int)Math.Round(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 = (int)Math.Round(corners3.x);
y = (int)Math.Round(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);
}
