122 lines
3.5 KiB
Python
Executable File
122 lines
3.5 KiB
Python
Executable File
#!/bin/env python
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import serial
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import pygame
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def compute_value(line, minimum, maximum):
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if len(line) < 3:
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return False
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value = [0, 0, 0]
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for i in range(3):
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if maximum[i]-minimum[i] != 0:
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value[i] = int(255*(line[i]-minimum[i])/(maximum[i]-minimum[i]))
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else:
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value[i] = 0
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if value[i] > 255:
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value[i] = 255
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elif value[i] < 0:
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value[i] = 0
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return value
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ser = serial.Serial("/dev/ttyACM0", 115200)
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pygame.init()
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# Keep old value to determine a mean value
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value = [[0, 0, 0], [0, 0, 0]]
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font = pygame.font.Font(None, 36)
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size = width, height = 640, 480
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screen = pygame.display.set_mode(size)
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pygame.display.set_caption("Touchless 3D tracking")
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screen.fill((0, 0, 0))
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try:
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ser.open()
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except Exception as e:
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print("Error while opening serial port : "+str(e))
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if ser.isOpen():
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try:
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ser.flushInput()
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ser.flushOutput()
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maximum = [-1, -1, -1]
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minimum = [-1, -1, -1]
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print("Calibration :")
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print("Press any key to launch the program when calibration is " +
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"finished.")
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# Display info in window
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label = font.render("Calibration...", 1, (255, 255, 255))
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label_pos = label.get_rect()
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label_pos.centerx = screen.get_rect().centerx
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label_pos.centery = 20
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screen.blit(label, label_pos)
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pygame.display.flip()
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running = True
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while running:
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for event in pygame.event.get():
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if event.type == pygame.KEYDOWN:
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running = False
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continue
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line = ser.readline()
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line = line.decode().strip("\r\n")
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line = line.split(" ")
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line = [int(j or 0) for j in line]
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for i in range(3):
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if line[i] < minimum[i] or minimum[i] < 0:
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minimum[i] = line[i]
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if line[i] > maximum[i]:
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maximum[i] = line[i]
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print(line)
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print("Running...")
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running = True
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while running:
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# Quit if window is closed
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for event in pygame.event.get():
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if event.type == pygame.QUIT or event.type == pygame.KEYDOWN:
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pygame.quit()
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running = False
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continue
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# Read line from serial
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line = ser.readline()
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line = line.decode().strip("\r\n")
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line = line.split(" ")
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line = [int(j or 0) for j in line]
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# Compute the value for red
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value[1] = value[0]
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value[0] = compute_value(line, minimum, maximum)
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value_bg = [(value[0][i] + value[1][i])/2 for i in range(3)]
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value_text = [255 - i for i in compute_value(line, minimum,
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maximum)]
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if value is not False:
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screen.fill((value_bg[0], value_bg[1], value_bg[2]))
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# Display info in window
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label = font.render("Running...", 1, (value_text[0],
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value_text[1], value_text[2]))
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label_pos = label.get_rect()
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label_pos.centerx = screen.get_rect().centerx
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label_pos.centery = 20
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screen.blit(label, label_pos)
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pygame.display.flip()
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ser.close()
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except Exception as e:
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print("Error while fetching data from serial : "+str(e))
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