pointsData[(polygons[1]*3)+2]*pointsData[(polygons[2]*3)+1]*pointsData[(polygons[3]*3)+0] -
pointsData[(polygons[1]*3)+1]*pointsData[(polygons[2]*3)+0]*pointsData[(polygons[3]*3)+2] -
pointsData[(polygons[1]*3)+0]*pointsData[(polygons[2]*3)+2]*pointsData[(polygons[3]*3)+1]) < 0)
pointsData[(polygons[1]*3)+2]*pointsData[(polygons[2]*3)+1]*pointsData[(polygons[3]*3)+0] -
pointsData[(polygons[1]*3)+1]*pointsData[(polygons[2]*3)+0]*pointsData[(polygons[3]*3)+2] -
pointsData[(polygons[1]*3)+0]*pointsData[(polygons[2]*3)+2]*pointsData[(polygons[3]*3)+1]) < 0)