main/src/georegression/geometry/UtilPlane3D_F64.java
public static void hessianNormalForm( PlaneGeneral3D_F64 plane ) {
		double n = Math.sqrt(plane.A*plane.A + plane.B*plane.B + plane.C*plane.C);
		plane.A /= n;
		plane.B /= n;
		plane.C /= n;
		plane.D /= n;
	}
public static void hessianNormalForm( PlaneGeneral3D_F64 plane ) {
		double n = Math.sqrt(plane.A*plane.A + plane.B*plane.B + plane.C*plane.C);
		plane.A /= n;
		plane.B /= n;
		plane.C /= n;
		plane.D /= n;
	}
public static void hessianNormalForm ( PlaneGeneral3D_F64 plane ) { double n = Math . sqrt ( plane . A * plane . A + plane . B * plane . B + plane . C * plane . C ) ; plane . A /= n ; plane . B /= n ; plane . C /= n ; plane . D /= n ; }
Converts the plane into Hessian normal form.   This is done by dividing each coefficient by the
Euclidean norm of (A,B,C).

@param plane The input plane.  Modified.
Converts the plane into Hessian normal form . This is done by dividing each coefficient by the Euclidean norm of ( A B C ) .