BrepTrim Method (Plane, Double)

Trims a Brep with an oriented cutter. The parts of Brep that lie inside (opposite the normal) of the cutter are retained while the parts to the outside ( in the direction of the normal ) are discarded. A connected component of Brep that does not intersect the cutter is kept if and only if it is contained in the inside of Cutter. That is the region bounded by cutter opposite from the normal of cutter, or in the case of a Plane cutter the half space opposite from the plane normal.

public Brep[] Trim(
	Plane cutter,
	double intersectionTolerance
)

Public Function Trim ( 
	cutter As Plane,
	intersectionTolerance As Double
) As Brep()