main/src/georegression/geometry/UtilPlane3D_F64.java
public static PlaneGeneral3D_F64 convert( PlaneNormal3D_F64 input , PlaneGeneral3D_F64 output ) {
		if( output == null )
			output = new PlaneGeneral3D_F64();

		Vector3D_F64 n = input.n;
		Point3D_F64 p = input.p;

		output.A = n.x;
		output.B = n.y;
		output.C = n.z;
		output.D = n.x*p.x + n.y*p.y + n.z*p.z;

		return output;
	}
public static PlaneGeneral3D_F64 convert( PlaneNormal3D_F64 input , PlaneGeneral3D_F64 output ) {
		if( output == null )
			output = new PlaneGeneral3D_F64();

		Vector3D_F64 n = input.n;
		Point3D_F64 p = input.p;

		output.A = n.x;
		output.B = n.y;
		output.C = n.z;
		output.D = n.x*p.x + n.y*p.y + n.z*p.z;

		return output;
	}
Converts a plane in normal form into a general equation

@param input Plane in normal form.
@param output (Optional) Storage for output plane in general form. If null a new instance will be declared.
@return The convert plane in general form.