ishihara.py 文件源码

def generate_circle(image_width, image_height, min_diameter, max_diameter):
    radius = random.triangular(min_diameter, max_diameter,
                               max_diameter * 0.8 + min_diameter * 0.2) / 2

    angle = random.uniform(0, math.pi * 2)
    distance_from_center = random.uniform(0, image_width * 0.48 - radius)
    x = image_width  * 0.5 + math.cos(angle) * distance_from_center
    y = image_height * 0.5 + math.sin(angle) * distance_from_center

    return x, y, radius