/// <summary>
/// Gets the plane edge set and z axis value equals no zero.
/// </summary>
/// <param name="box"></param>
/// <returns></returns>
public static List <Line> GetPlaneEdges(this BoundingBoxXYZ box)
{
var vectors = box.GetPlaneVectors();
var p1 = vectors[0];
var p2 = vectors[1];
var p3 = vectors[2];
var p4 = vectors[3];
var p12 = Line.CreateBound(p1, p2);
var p23 = Line.CreateBound(p2, p3);
var p34 = Line.CreateBound(p3, p4);
var p41 = Line.CreateBound(p4, p1);
return(new List <Line> {
p12, p23, p34, p41
});
}