The IOctTreeInsertable type exposes the following members.
Gets the 3-dimensional extent of an object
Tests whether an object is touched by the provided cube
Tests whether an object is inside or touched by the provided area
|HitTest(Projection, BoundingRect, Boolean)|
Tests whether an object is inside or touched by the rectangle when projected with the provided projection
Returns the smallest parameter value (l) where the provided line hits the object so that the point fromHere + l * direction is on or close to the object. The result may be negative. Return double.MaxValue if there is no such point.