import cv2
import numpy as np

def draw_polygon(points, resolution=50):
    
    # create a blank black canvas
    img = np.zeros((resolution, resolution, 3), dtype=np.uint8)
    pts = np.array(points, np.int32)
    pts = pts.reshape((-1, 1, 2))
    
    # draw a filled polygon in blue
    cv2.fillPoly(img, [pts], (0, 0, 255))
    
    # draw an outline in red
    cv2.polylines(img, [pts], True, (255, 0, 0), 1)
    
    # show the image
    cv2.imshow("Polygon", img)
    cv2.waitKey(0)
    cv2.destroyAllWindows()

    
    
# why is the infill outside the line?
if __name__ == "__main__":

    # 4 vertices of the quad (clockwise)
    quad = np.array([[[44, 27],
                      [7, 37],
                      [7, 19],
                      [38, 19]]])
    
    draw_polygon(quad)