#ascan ([manip_x,manip_y],machine_cur, [-950,900], [-960,910], [5.0,5.0], latency=1.0,zigzag=True, save=False)

RANGE_V = [-500, 500]
RANGE_H = [-500, 500]
STEP_V = 100.0
STEP_H = 100.0
SETTLING_TIME = 1.0


class LeemRoiIntensity (ImageMeasurement):
    def __init__(self, x,y,w,h):
        ImageMeasurement.__init__(self, image2,  "roi"+ str([x,y,w,h]))
        self.x, self.y, self.w, self.h, =  x,y,w,h
    def calc(self, data):
        return data.getRoi(Rectangle(self.x, self.y, self.w, self.h)).integrate(False)
       

microscope.move_timeout=240000

#We start at 0,0 absolute position
tilt_vertical.initialize()
tilt_horizontal.initialize()

roi_intensity = LeemRoiIntensity(550,420, 150, 150)
set_device_alias(image2.intensity, "CameraIntensity")    
set_device_alias(roi_intensity, "ROI_Intensity")    
sensors = [machine_cur, image2.intensity, roi_intensity]

def before_read(pos,scan):
    image2.update()
    
try:
    ascan ( [tilt_horizontal, tilt_vertical], sensors, \
            [RANGE_H[0], RANGE_V[0]], [RANGE_H[1], RANGE_V[1]], [float(STEP_H), float(STEP_V)], \
            latency=SETTLING_TIME,zigzag=True, save=True, before_read=before_read)

finally:
    tilt_vertical.write(0)
    tilt_horizontal.write(0)