# Constructs a Bitmap object by passing the image's width and height (in pixels)
	init with_size(width: Int, height: Int)
	do
		self.width = width
		self.height = height
		self.bits_per_pixel = 24
		self.data_offset = 54
		#set width and height

		self.set_value(dib_header, 4, width)
		self.set_value(dib_header, 8, height)
		#set file size
		var file_size = 3 * width * height + 54
		self.set_value(bitmap_header, 2, file_size)

		#init pixel data
		self.data = new Array[Array[Int]].with_capacity(height)
		for x in [0..height[ do
			var row = new Array[Int].with_capacity(width)
			for y in [0..width[ do
				row.add(0x00FFFFFF)
			end
			self.data[x] = row
		end
	end