/** * Gets the face area * * @return face area */ public double getArea() { //area = (a * c * sen(B))/2 Point3d p1 = v1.getPosition(); Point3d p2 = v2.getPosition(); Point3d p3 = v3.getPosition(); Vector3d xy = new Vector3d(p2.X - p1.X, p2.Y - p1.Y, p2.Z - p1.Z); Vector3d xz = new Vector3d(p3.X - p1.X, p3.Y - p1.Y, p3.Z - p1.Z); double a = Vector3d.Distance(p1, p2); double c = Vector3d.Distance(p1, p3); double B = xy.Angle(xz); return((a * c * Math.Sin(B)) / 2d); }