添加代码：opencv鼠标绘图

faceai/opencv/mouse.py

@@ -0,0 +1,49 @@
+#coding=utf-8
+#鼠标绘图
+
+import cv2
+import numpy as np
+
+
+def draw_circle(event, x, y, flags, param):
+    # print(event)
+    # print("cv2.EVENT_FLAG_ALTKEY:" + str(cv2.EVENT_FLAG_ALTKEY))
+    if event == cv2.EVENT_MBUTTONDOWN:
+        cv2.circle(img, (x, y), 20, (255, 0, 0), -1)
+
+
+img = np.zeros((512, 512, 3), np.uint8)
+cv2.namedWindow('image')
+cv2.setMouseCallback('image', draw_circle)
+
+while (1):
+    cv2.imshow('image', img)
+    if cv2.waitKey(1) & 0xFF == ord('q'):
+        break
+
+# for i in dir(cv2):
+#     if 'EVENT' in i:
+#         print(i)
+'''
+EVENT_FLAG_ALTKEY  #按住alt键
+EVENT_FLAG_CTRLKEY #按住ctrl键
+EVENT_FLAG_LBUTTON #按住鼠标左键
+EVENT_FLAG_MBUTTON #按住右键点击左键
+EVENT_FLAG_RBUTTON #按住鼠标右键
+EVENT_FLAG_SHIFTKEY #按住shift键
+EVENT_LBUTTONDBLCLK #左键双击
+EVENT_LBUTTONDOWN #左键按下
+EVENT_LBUTTONUP #左键抬起
+EVENT_MBUTTONDBLCLK #滚轮双击
+EVENT_MBUTTONDOWN #滚轮按下
+EVENT_MBUTTONUP #滚轮抬起
+EVENT_MOUSEMOVE #鼠标移动
+EVENT_MOUSEWHEEL #鼠标滚轮滚动
+EVENT_RBUTTONDBLCLK #右键双击  
+EVENT_RBUTTONDOWN #右键按下
+EVENT_RBUTTONUP #右键抬起
+'''
+
+# cv2.waitKey(0)
+
+cv2.destroyAllWindows()