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myPaint.py
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import cv2
import numpy as np
def nothing():
pass
'''
class _drawLine:
def __init__(self):
self.ix = 0; self.iy = 0; self.oldx = 0; self.oldy = 0; self.draw = False
def draw(self, event, x, y, flags, param):
if event == cv2.EVENT_LBUTTONDOWN:
self.ix = x
self.iy = y
self.oldx = x
self.oldy = y
self.draw = True
elif event == cv2.EVENT_MOUSEMOVE:
if self.draw:
cv2.rectangle(img, (self.ix, self.iy), (self.oldx, self.oldy), (255, 255, 255))
cv2.rectangle(img, (self.ix, self.iy), (self.x, self.y), (b, g, r))
self.oldx = x, self.oldy = y
elif event == cv2.EVENT_LBUTTONUP:
self.draw = False
cv2.rectangle(img, (self.ix, self.iy), (self.oldx, self.oldy), (255, 255, 255))
cv2.rectangle(img, (self.ix, self.iy), (self.x, self.y), (b, g, r))
self.oldx = x, self.oldy = y
def myPaint2():
cv2.namedWindow("myPaint")
img = np.zeros((300, 1000, 3), np.uint8)
img[:] = 255
line = drawLine()
#line.draw
cv2.createTrackbar("Line(0:No, 1:Yes)", "myPaint", 0, 1, nothing)
cv2.createTrackbar("Rectangle(0:No, 1:Yes)", "myPaint", 0, 1, nothing)
cv2.createTrackbar("Polygon(0:No, 1:Yes)", "myPaint", 0, 1, nothing)
cv2.createTrackbar("Circle(0:No, 1:Yes)", "myPaint", 0, 1, nothing)
cv2.createTrackbar("Eraser(0:No, 1:Yes)", "myPaint", 0, 1, nothing)
cv2.createTrackbar("R", "myPaint", 0, 255, nothing)
cv2.createTrackbar("G", "myPaint", 0, 255, nothing)
cv2.createTrackbar("B", "myPaint", 0, 255, nothing)
while(1):
#print(val)
cv2.imshow("myPaint", img)
r = cv2.getTrackbarPos("R", "myPaint")
g = cv2.getTrackbarPos("G", "myPaint")
b = cv2.getTrackbarPos("B", "myPaint")
if cv2.getTrackbarPos("Line(0:No, 1:Yes)", "myPaint"):
cv2.setMouseCallback("myPaint", line.draw)
if cv2.waitKey(10) == 27:
break
#global img, r, g, b
#def __init__(self):
'''
def drawLine(event, x, y, flags, param):
#print(b, g, r)
global img
if event == cv2.EVENT_LBUTTONDOWN:
drawLine.ix = x
drawLine.iy = y
elif event == cv2.EVENT_LBUTTONUP:
cv2.line(img, (drawLine.ix, drawLine.iy), (x, y), (b, g, r), thickness)
drawLine.ix = 0; drawLine.iy = 0;
def offTrackbars(trackbarNames, windowName):
for i in trackbarNames:
cv2.setTrackbarPos(i, windowName, 0)
def drawRect(event, x, y, flags, param):
global img
if event == cv2.EVENT_LBUTTONDOWN:
drawRect.ix = x
drawRect.iy = y
elif event == cv2.EVENT_LBUTTONUP:
cv2.rectangle(img, (drawRect.ix, drawRect.iy), (x, y), (b, g, r), thickness)
def drawCircle(event, x, y, flags, param):
global img
if event == cv2.EVENT_LBUTTONDOWN:
drawCircle.ix = x
drawCircle.iy = y
elif event == cv2.EVENT_LBUTTONUP:
cv2.circle(img, (drawCircle.ix, drawCircle.iy), int(np.sqrt(np.sum([np.square(drawCircle.ix - x), np.square(drawCircle.iy - y)]))), (b, g, r), thickness)
def erase(event, x, y, flags, param):
global img
if event == cv2.EVENT_LBUTTONDOWN:
erase.ix = x
erase.iy = y
erase.draw = True
if event == cv2.EVENT_MOUSEMOVE:
if erase.draw:
cv2.circle(img, (x, y), thickness, (255, 255, 255), -1)
elif event == cv2.EVENT_LBUTTONUP:
erase.draw = False
cv2.circle(img, (x, y), thickness, (255, 255, 255), -1)
drawRect.ix = 0; drawRect.iy = 0
b = 0; r = 0; g = 0
img = 0; thickness = 0; # type: int # type: int
def myPaint():
print(cv2.__version__)
cv2.namedWindow("myPaint")
global img, b, r, g, thickness
img = np.zeros((300, 1000, 3), np.uint8)
img[:] = 255
trackbarNames = {"L" : "Line(0:No, Others: Thickness)", 'R' : "Rectangle(0:No, Others: Thickness)", "C" : "Circle(0:No, Others: Thickness)", "E" : "Eraser(0:No, Others: Thickness)"}
#line = drawLine()
#line.draw
cv2.createTrackbar("Line(0:No, Others: Thickness)", "myPaint", 0, 20, nothing)
cv2.createTrackbar("Rectangle(0:No, Others: Thickness)", "myPaint", 0, 20, nothing)
cv2.createTrackbar("Circle(0:No, Others: Thickness)", "myPaint", 0, 20, nothing)
cv2.createTrackbar("Eraser(0:No, Others: Thickness)", "myPaint", 0, 20, nothing)
cv2.createTrackbar("R", "myPaint", 0, 255, nothing)
cv2.createTrackbar("G", "myPaint", 0, 255, nothing)
cv2.createTrackbar("B", "myPaint", 0, 255, nothing)
prevL = False
prevR = False
prevC = False
prevE = False
while(1):
cv2.imshow("myPaint", img)
#print(val)
#cv2.line(img, (0, 0), (100, 100), (0, 0, 0))
r = cv2.getTrackbarPos("R", "myPaint")
g = cv2.getTrackbarPos("G", "myPaint")
b = cv2.getTrackbarPos("B", "myPaint")
#cv2.setTrackbarPos(trackbarNames['L'], "myPaint", 1)
lis = list(trackbarNames.values())
#print(trackbarNames['L'])
if cv2.getTrackbarPos(trackbarNames['L'], "myPaint"):
#print(1)
thickness = cv2.getTrackbarPos(trackbarNames['L'], "myPaint")
#cv2.line(img, (100, 100), (200, 200), (0, 0, 0))
cv2.setMouseCallback("myPaint", drawLine)
if not prevL:
prevL = True
lis.remove(trackbarNames["L"])
offTrackbars(lis, "myPaint")
else:
prevL = False
if cv2.getTrackbarPos(trackbarNames['R'], "myPaint"):
thickness = cv2.getTrackbarPos(trackbarNames['R'], "myPaint")
cv2.setMouseCallback("myPaint", drawRect)
if not prevR:
prevR = True
lis.remove(trackbarNames["R"])
offTrackbars(lis, "myPaint")
else:
prevR = False
if cv2.getTrackbarPos(trackbarNames['C'], "myPaint"):
thickness = cv2.getTrackbarPos(trackbarNames['C'], "myPaint")
cv2.setMouseCallback("myPaint", drawCircle)
if not prevC:
prevC = True
lis.remove(trackbarNames["C"])
offTrackbars(lis, "myPaint")
else:
prevC = False
if cv2.getTrackbarPos(trackbarNames['E'], "myPaint"):
thickness = cv2.getTrackbarPos(trackbarNames['E'], "myPaint")
cv2.setMouseCallback("myPaint", erase)
if not prevE:
prevE = True
lis.remove(trackbarNames["E"])
offTrackbars(lis, "myPaint")
else:
prevE = False
if cv2.waitKey(1) == 27:
break
if __name__ == '__main__':
myPaint()