public IBoundingBox GetBoundingBox()
{
if (_boundingSphereComputed)
{
return(_boundingBox);
}
_boundingBox = _initialBoundingBox;
_boundingBox.ExpandBy(null != ComputeBoundingBoxCallback
? ComputeBoundingBoxCallback(this)
: ComputeBoundingBox());
if (_boundingBox.Valid())
{
_boundingSphere.Set(_boundingBox.Center, _boundingBox.Radius);
}
else
{
_boundingSphere.Init();
}
_boundingSphereComputed = true;
return(_boundingBox);
}
/// <summary>
/// Expand the bounding box to include the given bounding box.
/// </summary>
/// <param name="bb"></param>
public void ExpandBy(IBoundingBox bb)
{
if (!bb.Valid())
{
return;
}
if (bb.XMin < _min.X)
{
_min.X = bb.XMin;
}
if (bb.XMax > _max.X)
{
_max.X = bb.XMax;
}
if (bb.YMin < _min.Y)
{
_min.Y = bb.YMin;
}
if (bb.YMax > _max.Y)
{
_max.Y = bb.YMax;
}
if (bb.ZMin < _min.Z)
{
_min.Z = bb.ZMin;
}
if (bb.ZMax > _max.Z)
{
_max.Z = bb.ZMax;
}
}