class GrayBar:
'''
This class represents a GrayBar on the Stage, and includes functionality to get
a gradient involving gray-scale values on the GrayBar.
'''
def __init__(self, point):
''' Constructor
Sets the logging level, and represents the GrayBar in terms
of a small Rectangle relative the point param.
Keyword Arguments:
point -- A point in the GrayBar
'''
#TODO: push this to settings
self.boxSize = Point(CalibratorConstants.BoxSize,CalibratorConstants.BoxSize)
# LeftBox - a nxn box on the left side of the ColorBar
self.box = Rectangle([int(x) for x in point - self.boxSize] + [int(x) for x in point + self.boxSize])
def __str__(self):
''' Returns a Human-Readable representation of the class
'''
return 'GrayBar: [ ' + self.box.__str__() + ' ]'
def sample(self, image):
''' Samples the GrayBar
Keyword Arguments:
image -- a PIL.Image object
Returns:
The RGB value of the GrayBar
'''
color = Stat(image.crop(self.box.coordinates)).mean
return color
def draw(self, drawing, color):
'''
'''
self.box.draw(drawing, color)
