def vec_and_step(tang, W):
(begin, end) = utils.get_line_ends(0, 0, W, tang)
(x_vec, y_vec) = (end[0] - begin[0], end[1] - begin[1])
length = math.hypot(x_vec, y_vec)
(x_norm, y_norm) = (x_vec / length, y_vec / length)
step = length / W
return (x_norm, y_norm, step)
def vec_and_step(tang, W):
(begin, end) = utils.get_line_ends(0, 0, W, tang)
(x_vec, y_vec) = (end[0] - begin[0], end[1] - begin[1])
length = math.hypot(x_vec, y_vec)
(x_norm, y_norm) = (x_vec / length, y_vec / length)
step = length / W
return (x_norm, y_norm, step)
def ortho_vec_and_step(tang, W):
ortho_tang = -1.0 / tang
(ortho_begin, ortho_end) = utils.get_line_ends(0, 0, W, ortho_tang)
(x_vec, y_vec) = (ortho_end[0] - ortho_begin[0], ortho_end[1] - ortho_begin[1])
length = math.hypot(x_vec, y_vec)
(x_norm, y_norm) = (x_vec / length, y_vec / length)
step = length / W
print (x_norm, y_norm, step)
return (x_norm, y_norm, step)