This code has the click event.
#Webcam IR mouse control 1.6
#K.B. Carte Sept. 9, 2009
#Works only with an IR filter on the webcam.
#To do this simply cut out the black part of a film
#negitave, and place two or three layers over the lens
#of the webcam.
######################################################
#----------imports and global variabl assignment------
######################################################
from VideoCapture import Device
import Image, sys, pygame
from ctypes import *
import ImageOps
from PIL import ImageEnhance
from pygame.locals import *
cam = Device()
user = windll.user32
res = (1440,900) #set to the resolution of the screen
pygame.init()
screen = pygame.display.set_mode((640,480))
pygame.display.set_caption('IR Mouse Control')
font = pygame.font.SysFont("Curier",26)
#---------------functions-----------------------
################################################
#Returns the xy cordinets of the ir dot.
#Doesn't return exact dot, only the first TRUE pixel value
def xy(im):
imxy = im.getprojection()
imx = imxy[0]
imy = imxy[1]
x = imx.index(1)
y = imy.index(1)
return (x,y)
#Returns size in pixels of the ir dot
#Was going to be used for click event
#No longer needed, but I think its a cool feature =]
def irint(im):
xyi = 0
irxy = im.getprojection()
irx = irxy[0]
iry = irxy[1]
for i in irx:
if i == 1:
xyi +=1
for i in iry:
if i == 1:
xyi += 1
return xyi
################################################################################
#Used for "click" event
################################################################################
#from ctypes import *
user32 = windll.user32
import time
PUL = POINTER(c_ulong)
class KeyBdInput(Structure):
_fields_ = [("wVk", c_ushort),
("wScan", c_ushort),
("dwFlags", c_ulong),
("time", c_ulong),
("dwExtraInfo", PUL)]
class HardwareInput(Structure):
_fields_ = [("uMsg", c_ulong),
("wParamL", c_short),
("wParamH", c_ushort)]
class MouseInput(Structure):
_fields_ = [("dx", c_long),
("dy", c_long),
("mouseData", c_ulong),
("dwFlags", c_ulong),
("time",c_ulong),
("dwExtraInfo", PUL)]
class Input_I(Union):
_fields_ = [("ki", KeyBdInput),
("mi", MouseInput),
("hi", HardwareInput)]
class Input(Structure):
_fields_ = [("type", c_ulong),
("ii", Input_I)]
class POINT(Structure):
_fields_ = [("x", c_ulong),
("y", c_ulong)]
# END SENDINPUT TYPE DECLARATIONS
FInputs = Input * 2
extra = c_ulong(0)
click = Input_I()
click.mi = MouseInput(0, 0, 0, 2, 0, pointer(extra))
release = Input_I()
release.mi = MouseInput(0, 0, 0, 4, 0, pointer(extra))
#x = FInputs( (0, click), (0, release) )
#user32.SendInput(2, pointer(x), sizeof(x[0]))
###################################################################
#Work cited: Case Nelson #
#http://mail.python.org/pipermail/python-list/2005-May/320761.html#
###################################################################
def clk():
x = FInputs((0, click))
user32.SendInput(2, pointer(x), sizeof(x[0]))
def rel():
a = FInputs((0, release))
user32.SendInput(2, pointer(a), sizeof(a[0]))
#-----------Main loop--------------------
#########################################
while 1:
for event in pygame.event.get():
if event.type == pygame.QUIT: sys.exit()
try:
rel()
imt = cam.getImage()
im = imt.resize(res)
im = ImageOps.mirror(im)
im1 = ImageEnhance.Contrast(imt).enhance(1.0)
im1 = ImageEnhance.Brightness(imt).enhance(1.5)
x,y = xy(im)
xyi = irint(im1)
user.SetCursorPos(x,y)
irpix = font.render("IR intensity in pixels:" + str(xyi), True, (250,250,250))
name = font.render('By K.B. Carte', True, (250,250,250))
web = font.render('Webcam IR mouse control : 1.0.1', True, (250,250,250))
fil = font.render('Works only with an IR filter on the webcam lens', True, (250,250,250))
im1 = pygame.image.frombuffer(im1.tostring(), (640,480), "RGB")
screen.blit(im1, (0,0))
screen.blit(name,(0,26))
screen.blit(web,(0,0))
screen.blit(fil,(0,52))
screen.blit(irpix,(0,78))
pygame.display.flip()
except ValueError: #A value error is raised when it can't see the IRLED.
clk() #I use it to register a click.
pass #Not practical, thinking just hack a mouse to mount on head
#and click with an momentary swtich or something.
Unsolved 
