/// <summary>
/// Allows for merging two boxes together (combining).
/// </summary>
/// <param name="box">Source box.</param>
public void Merge(AxisAlignedBox box)
{
if (box.IsNull)
{
// nothing to merge with in this case, just return
return;
}
else if (box.IsInfinite)
{
this.IsInfinite = true;
}
else if (this.IsNull)
{
SetExtents(box.Minimum, box.Maximum);
}
else if (!this.IsInfinite)
{
minVector.Floor(box.Minimum);
maxVector.Ceil(box.Maximum);
UpdateCorners();
}
}
public AxisAlignedBox(AxisAlignedBox box)
{
SetExtents(box.Minimum, box.Maximum);
isNull = box.IsNull;
isInfinite = box.IsInfinite;
}
/// <summary>
/// Calculate the area of intersection of this box and another
/// </summary>
public AxisAlignedBox Intersection(AxisAlignedBox b2)
{
if (!Intersects(b2))
{
return(new AxisAlignedBox());
}
Vector3 intMin = Vector3.Zero;
Vector3 intMax = Vector3.Zero;
Vector3 b2max = b2.maxVector;
Vector3 b2min = b2.minVector;
if (b2max.x > maxVector.x && maxVector.x > b2min.x)
{
intMax.x = maxVector.x;
}
else
{
intMax.x = b2max.x;
}
if (b2max.y > maxVector.y && maxVector.y > b2min.y)
{
intMax.y = maxVector.y;
}
else
{
intMax.y = b2max.y;
}
if (b2max.z > maxVector.z && maxVector.z > b2min.z)
{
intMax.z = maxVector.z;
}
else
{
intMax.z = b2max.z;
}
if (b2min.x < minVector.x && minVector.x < b2max.x)
{
intMin.x = minVector.x;
}
else
{
intMin.x = b2min.x;
}
if (b2min.y < minVector.y && minVector.y < b2max.y)
{
intMin.y = minVector.y;
}
else
{
intMin.y = b2min.y;
}
if (b2min.z < minVector.z && minVector.z < b2max.z)
{
intMin.z = minVector.z;
}
else
{
intMin.z = b2min.z;
}
return(new AxisAlignedBox(intMin, intMax));
}