Explication de routine-03-circle_drawingDessiner un cercle

Cette routine est 03-Drawing-circle_drawing.py

# 绘制圆形
#
# 这个例子展示了如何使用OpenMV内置的画圆形功能。
import sensor
import time
from random import randint

sensor.reset()
sensor.set_pixformat(sensor.RGB565)  # or GRAYSCALE...
sensor.set_framesize(sensor.QVGA)  # or QQVGA...
sensor.skip_frames(time=2000)
clock = time.clock()

while True:
    clock.tick()

    img = sensor.snapshot()

    for i in range(10):
        x = randint(0, 2 * img.width()) - img.width() // 2
        y = randint(0, 2 * img.height()) - img.height() // 2
        radius = randint(0, max(img.height(), img.width()) // 2)

        r = randint(0, 127) + 128
        g = randint(0, 127) + 128
        b = randint(0, 127) + 128

        # # If the first argument is a scaler then this method expects 
        # to see x, y, and radius. Otherwise, it expects a (x,y,radius) tuple.
        # 如果第一个参数是scaler，那么此方法应传递x y和半径。否则，它需要一个(x,y,半径)元组
        img.draw_circle(x, y, radius, color=(r, g, b), thickness=2, fill=False)

    print(clock.fps())

Exécution des rendus du programme :

Explication officielle de la fonction du document chinois OpenMV de Singtown Technology :