.. py:module:: geom

The function window_viewport_transform
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.. py:function:: window_viewport_transform(window, width, height)


   Returns a tuple (sx, sy, tx, ty) that represents the geometric transform needed to transform points of the window into pixels of a viewport of the given width and geight.

   :param Box window: window
   :param int width:  width of the viewport
   :param int height: height of the viewport
   :return: the tuple (sx, sy, tx, ty)


You can download the module :download:`geom.py <geom.py>`.