class Vips::Region

“‘
pixels = region.fetch(10, 10, 100, 100)
region = Vips::Region.new(image)
“`ruby
For example:
of pixels.
A region on an image. Create one, then use `fetch` to quickly get a region

def fetch(left, top, width, height)

Fetch a region filled with pixel data. 
def fetch(left, top, width, height)
  len = Vips::SizeStruct.new
  ptr = Vips.vips_region_fetch self, left, top, width, height, len
  raise Vips::Error if ptr.null?
  # wrap up as an autopointer
  ptr = FFI::AutoPointer.new(ptr, GLib::G_FREE)
  ptr.get_bytes 0, len[:value]
end

def height 

def height
  Vips.vips_region_height self
end

def initialize(name) 

def initialize(name)
  pointer = Vips.vips_region_new name
  raise Vips::Error if pointer.null?
  super(pointer)
end

def width 

def width
  Vips.vips_region_width self
end