Tracyxzh
diff --git a/‎ch06-绘图函数/random-circles2.jpg‎
9.05 KB b/‎ch06-绘图函数/random-circles2.jpg‎
9.05 KB
diff --git a/‎ch06-绘图函数/画圆圈.py‎
Lines changed: 37 additions & 8 deletions b/‎ch06-绘图函数/画圆圈.py‎
Lines changed: 37 additions & 8 deletions
diff --git a/‎ch07-把鼠标当画笔/putText.jpg‎
83.8 KB b/‎ch07-把鼠标当画笔/putText.jpg‎
83.8 KB
diff --git a/‎ch07-把鼠标当画笔/鼠标左右键回调函数.py‎
Lines changed: 37 additions & 0 deletions b/‎ch07-把鼠标当画笔/鼠标左右键回调函数.py‎
Lines changed: 37 additions & 0 deletions
@@ -7,17 +7,46 @@
 """
 画圆圈.py:随机覆盖，不同颜色，
 """
-
+from time import sleep
 import cv2
 import numpy as np
 
+
+def click_event(event, x, y, flags, param):
+    '''
+    用左键点击屏幕，打印坐标
+    :param event:
+    :param x:
+    :param y:
+    :param flags:
+    :param param:
+    :return:
+    '''
+    if event == cv2.EVENT_LBUTTONDOWN:
+        print(x, y, flags, param)
+
+
+cv2.namedWindow('Canvas', cv2.WINDOW_GUI_EXPANDED)
+cv2.setMouseCallback("Canvas", click_event)
+
 canvas = np.zeros((300, 300, 3), dtype="uint8")
+while True:
+    try:
+        for i in range(0, 25):
+            radius = np.random.randint(5, high=200)
+            color = np.random.randint(0, high=256, size=(3,)).tolist()
+            pt = np.random.randint(0, high=300, size=(2,))
+            cv2.circle(canvas, tuple(pt), radius, color, -1)
 
-for i in range(0, 25):
-    radius = np.random.randint(5, high=200)
-    color = np.random.randint(0, high=256, size=(3,)).tolist()
-    pt = np.random.randint(0, high=300, size=(2,))
-    cv2.circle(canvas, tuple(pt), radius, color, -1)
+        cv2.imshow("Canvas", canvas)
 
-cv2.imshow("Canvas", canvas)
-cv2.waitKey(0)
+        key = cv2.waitKey(5)
+        if key == ord('q'):
+            break
+        else:
+            sleep(1)
+            continue
+    except KeyboardInterrupt as e:
+        print('KeyboardInterrupt', e)
+    finally:
+        cv2.imwrite('random-circles2.jpg', canvas)
@@ -0,0 +1,37 @@
+# -*- coding: utf-8 -*-
+# @Time    : 2017/7/17 下午6:19
+# @Author  : play4fun
+# @File    : 鼠标左右键回调函数.py
+# @Software: PyCharm
+
+"""
+鼠标左右键回调函数.py:
+"""
+
+import cv2
+
+
+def click_event(event, x, y, flags, param):
+    if event == cv2.EVENT_LBUTTONDOWN:
+        print(x, y)
+
+    if event == cv2.EVENT_RBUTTONDOWN:
+        red = img[y, x, 2]
+        blue = img[y, x, 0]
+        green = img[y, x, 1]
+        print(red, green, blue)
+
+        strRGB = str(red) + "," + str(green) + "," + str(blue)
+        font = cv2.FONT_HERSHEY_SIMPLEX
+        cv2.putText(img, strRGB, (x, y), font, 1, (255, 255, 255), 2)
+        cv2.imshow('original', img)
+
+
+img = cv2.imread('../data/messi5.jpg')
+cv2.imshow('original', img)
+
+cv2.setMouseCallback("original", click_event)
+cv2.waitKey(0)
+cv2.imwrite('putText.jpg',img)
+
+cv2.destroyAllWindows()