def get_normal(tri): """in: 3 verts, out normal (nx, ny,nz) with length 1 """ (v0, v1, v2) = tri p0 = Point.from_list(v0.get()) p1 = Point.from_list(v1.get()) p2 = Point.from_list(v2.get()) a = Vector.from_points(p1, p0) b = Vector.from_points(p1, p2) #print p0,p1, p2 #print a,b c = a.cross(b) #print c m = float(c.magnitude()) normal = [c.x / m, c.y / m, c.z / m] return normal
def dist(v1, v2): ''' distance between 2 vertices''' p1 = Point.from_list(v1.get()) p2 = Point.from_list(v2.get()) v = Vector.from_points(p1, p2) return v.magnitude()