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# Target base directory for pictures and films
# Recommended to use absolute path. (Default: current working directory)
target_dir /home/....../pics/
# Output pictures with only the pixels moving object (ghost images) (default: off)
output_motion on
# %K and %L = X and Y coordinates of motion center
jpeg_filename motionCaps%H%M%S_%q__%K_%L

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import pygame
from glob import glob
from os import system 

picturePath="./pics/motionCap*.jpg"

def drawMyCircle(window,center):
    """draws a white circle on 'window' at position 'center' with size 3""" 
    pygame.draw.circle(window, (255, 255, 255),center,3)
    pygame.display.flip()
    
def calcCenterList(filelist):
    """receives positions of movement by parsing all filenames in 'filelist'
    returns a list of positions
    ATTENTION: removes all files in 'filelist' from disc!!!"""    
    centers=[]
    if (filelist!=[]):
        for i in filelist:
            newx=int(i.split("_")[3])
            newy=int(i.split("_")[4].split("m")[0])
            centers.append((newx,newy))
            system("rm "+i+" &")
    return centers

if __name__=="__main__":
    pygame.init() 
    window = pygame.display.set_mode((640, 480)) 
 
    while True: 
        filelist=glob(picturePath)
        centers=calcCenterList(filelist)
        for i in centers:
            drawMyCircle(window,i)

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import pygame
import os
from glob import glob

picturePath = "/dev/shm/pics/motionCap*.jpg"
motionConfigFilename = "/.../motion.conf"

def drawMyCircle(window, center):
    """draws a white circle on 'window' at position 'center' with size 3""" 
    pygame.draw.circle(window, (255, 255, 255), center, 3)
    pygame.display.flip()
    
def parsePositionsFromFilenames(filenames):
    """receives positions of movement by parsing all filenames in 'fileNames'
    returns a list of positions"""    
    centers = []
    for name in filenames:
        splitName = name.split("_")
        newx = int(splitName[3])
        newy = int(splitName[4].split("m")[0])
        centers.append((newx, newy))
    return centers

def deleteFiles(filenames):
    """deletes all files in 'fileNames' from disc
    use with care!!!"""
    for filename in filenames:
        os.remove(filename)
    return

def main(window,path):
    """reads constantly all files from wildcarded string 'path'
    draws a circle on 'window' and reads some events"""
    quit = False
    while not quit: 
        filenames = glob(path)
        centres = parsePositionsFromFilenames(filenames)
        for coordinates in centres:
            drawMyCircle(window, coordinates)
        deleteFiles(filenames)
        for event in pygame.event.get():
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_n:
                    window.fill((0, 0, 0))
                    pygame.display.flip()
                if event.key == pygame.K_q:
                    quit = True

if __name__ == "__main__":
    pygame.init() 
    window = pygame.display.set_mode((640, 480)) 
    pid = os.fork()
    if not pid:
        os.execvp("/usr/bin/motion",["motion", "-c", motionConfigFilename])
    main(window,picturePath)
    os.execvp("killall", ["killall", "motion"])