view3d_idx_view2.py 文件源码

def generate_points(width, height):
    amp = 5  # radius fillet

    width += 2
    height += 4
    width = ((width/2) - amp) + 2
    height -= (2*amp)

    pos_list, final_list = [], []

    n_points = 12
    seg_angle = 2 * math.pi / n_points
    for i in range(n_points + 1):
        angle = i * seg_angle
        x = math.cos(angle) * amp
        y = math.sin(angle) * amp
        pos_list.append([x, -y])

    w_list, h_list = [1, -1, -1, 1], [-1, -1, 1, 1]
    slice_list = [[i, i+4] for i in range(0, n_points, 3)]

    for idx, (start, end) in enumerate(slice_list):
        point_array = pos_list[start:end]
        w = width * w_list[idx]
        h = height * h_list[idx]
        final_list += adjust_list(point_array, w, h)

    return final_list