get blade angle w.r.t. substrate

get_blade_angle.py

def calc_angle():
    #Get line coordinates
    x1 = cs.points[0][0];y1 = cs.points[0][1]
    x2 = cs.points[1][0];y2 = cs.points[1][1]
    x3 = cs.points[2][0];y3 = cs.points[2][1]
    x4 = cs.points[3][0];y4 = cs.points[3][1]

    #Use coordinates to get components of vectors
    vx1 = (x1-x2);vy1 = (y1-y2)
    vx2 = (x4-x3);vy2 = (y4-y3)

    #Vectors
    v1 = [vx1,vy1];v2 = [vx2,vy2]

    #Vector magnitudes
    mag1 = np.linalg.norm(v1);mag2 = np.linalg.norm(v2)

    #Calculate angle between vectors
    dot = np.dot(v1,v2)
    magP = (mag1*mag2)
    quot = dot/magP
    angle = round(math.degrees(np.arccos(quot)),1)
    print(angle)
    return angle