public BrgAttachpoint(BrgAttachpoint prev)
{
Index = prev.Index;
NameId = prev.NameId;
XVector = prev.XVector;
YVector = prev.YVector;
ZVector = prev.ZVector;
Position = prev.Position;
BoundingBoxMin = prev.BoundingBoxMin;
BoundingBoxMax = prev.BoundingBoxMax;
}