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 |  
from lxml import etree
from io import BytesIO
from picamera import PiCamera
from PIL import Image
 
 
class optique(object):
 
    def __init__(self, nom="", fichierPerif="perifs.xml", dossierData="data"):
        self._nom = nom
        self._type = "cam"
        self._fichierPerif = fichierPerif
        self._dossierData = dossierData
        self._camera = PiCamera()
        self._scanneDoc = "scans"
        self._fichierFormat = "jpg"
        self._scanneNom = ""
        # position par raport au referanciel du bloque de liason
        self._x = 0
        self._y = 0
        self._z = 0
        self._rx = 0
        self._ry = 0
        self._rz = 0
 
        self._angleFocalLarge = 0
        self._angleFocalHaut = 0
        self._resolutionl = 0
        self._resolutionh = 0
        self._dimPixl = 0
 
        self._lien = ""
 
        self._testInit = True
 
        self._tblPosScan = list()
 
    def intiBase(self):
        perifs = etree.parse(self._dossierData + "/" + self._fichierPerif)
        for perif in perifs.xpath("/perifs/perif"):
            if perif.find('type').text == self._type:
                if perif.find('nom').text == self._nom:
                    self._x = float(perif.find('x').text)
                    self._y = float(perif.find('y').text)
                    self._z = float(perif.find('z').text)
                    self._Rx = float(perif.find('Rx').text)
                    self._Ry = float(perif.find('Ry').text)
                    self._Rz = float(perif.find('Rz').text)
 
                    self._angleFocalLarge = float(perif.find('angleFocalLarge').text)
                    self._angleFocalHaut = float(perif.find('angleFocalHaut').text)
                    self._resolutionl = float(perif.find('resolutionl').text)
                    self._resolutionh = float(perif.find('resolutionh').text)
                    self._dimPixl = float(perif.find('dimPixl').text)
 
                    self._lien = str(perif.find('lien').text)
 
                    self._camera.hflip = bool(perif.find('hflip').text)
                    self._camera.vfli = bool(perif.find('vflip').text)
                    self._camera.sharpness = int(perif.find('sharpness').text)
                    self._camera.contrast = int(perif.find('contrast').text)
                    self._camera.brightness = int(perif.find('brightness').text)
                    self._camera.saturation = int(perif.find('saturation').text)
                    self._camera.ISO = int(perif.find('ISO').text)
                    self._camera.video_stabilization = bool(perif.find('vnomeo_stabilization').text)
                    self._camera.exposure_compensation = int(perif.find('exposure_compensation').text)
                    self._camera.exposure_mode = str(perif.find('exposure_mode').text)
                    self._camera.meter_mode = str(perif.find('meter_mode').text)
                    self._camera.awb_mode = str(perif.find('awb_mode').text)
                    self._camera.image_effect = str(perif.find('image_effect').text)
                    self._camera.color_effects = str(perif.find('color_effects').text)
                    self._camera.rotation = int(perif.find('rotation').text)
                    self._camera.crop = (
                    float(perif.find('cropA').text), float(perif.find('cropB').text), float(perif.find('cropC').text),
                    float(perif.find('cropD').text))
                    self._camera.resolution = (self._resolutionl, self._resolutionh)
 
        self._testInit = False
 
    def nomage(self):
        if self._scanneNom == "": self._scanneNom = "test"
        self._DossierDuScan = self._scanneNom
        self._DossierDesScan = self._scanneDoc
 
        self._nomDeLaPhoto = self._scanneNom + "_"
        self._nomDeLaPhoto += self._tblPosScan[0] + "_"
        self._nomDeLaPhoto += self._tblPosScan[1] + "_"
        self._nomDeLaPhoto += self._tblPosScan[2] + "_"
        self._nomDeLaPhoto += self._tblPosScan[3] + "_"
        self._nomDeLaPhoto += self._tblPosScan[4] + "_"
        self._nomDeLaPhoto += self._tblPosScan[5]
        self._nomDeLaPhoto += "." + self._fichierFormat
 
        self._NomCompletEnregistrement = self._DossierDesScan + "/"
        self._NomCompletEnregistrement += self._DossierDuScan + "/"
        self._NomCompletEnregistrement += self._nomDeLaPhoto
        return self._NomCompletEnregistrement
 
    def photo(self, sauve=False):
        if sauve:
            img = self.photoFichier()
        else:
            img = self.photoStream()
        return img
 
    def photoStream(self):
        if self._testInit: self.intiBase()
        stream = BytesIO()
        self._camera.capture(stream, format='jpeg')
        img = Image.open(stream)
        stream.close()
        return img
 
    def photoFichier(self):
        if self._testInit: self.intiBase()
        nom = self.nomage(self)
        self._camera.capture(nom)
        img = Image.open(nom)
        return img
 
    @property
    def angleFocalLarge(self):
        return self._angleFocalLarge
 
    @angleFocalLarge.setter
    def angleFocalLarge(self, v):
        self._angleFocalLarge = v
 
    @property
    def angleFocalHaut(self):
        return self._angleFocalHaut
 
    @angleFocalHaut.setter
    def angleFocalHaut(self, v):
        self._angleFocalHaut = v
 
    @property
    def resolutionl(self):
        return self._resolutionl
 
    @resolutionl.setter
    def resolutionl(self, v):
        self._resolutionl = v
 
    @property
    def resolutionh(self):
        return self._resolutionh
 
    @resolutionh.setter
    def resolutionh(self, v):
        self._resolutionh = v
 
    @property
    def dimPixl(self):
        return self._dimPixl
 
    @dimPixl.setter
    def dimPixl(self, v):
        self._dimPixl = v
 
    @property
    def lien(self):
        return self._lien
 
    @lien.setter
    def lien(self, v):
        self._lien = v
 
    @property
    def position(self):
        return self._x, self._y, self._z, self._rx, self._ry, self._rz
 
    @position.setter
    def position(self, x, y, z, rx, ry, rz):
        self._x = x
        self._y = y
        self._z = z
        self._rx = rx
        self._ry = ry
        self._rz = rz
        _position = ([x, y, z, rx, ry, rz])
 
    @property
    def tblPosScan(self):
        return self._tblPosScan
 
    @tblPosScan.setter
    def tblPosScan(self, tbl):
        self._tblPosScan = tbl
 
    @property
    def fichierFormat(self):
        return self._fichierFormat
 
    @fichierFormat.setter
    def fichierFormat(self, v):
        self._fichierFormat = v
 
    @property
    def scanneDoc(self):
        return self._scanneDoc
 
    @scanneDoc.setter
    def scanneDoc(self, v):
        self._scanneDoc = v
 
    @property
    def scanneNom(self):
        return self._scanneNom
 
    @scanneNom.setter
    def scanneNom(self, v):
        self._scanneNom = v | 
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