Conceptual Framework for Interactive Graphics

}Graphics library/package is intermediary between application and display hardware (Graphics System)

}Application program maps application objects to views (images) of those objects by calling on graphics library.  Application model may contain lots of non-graphical data (e.g., non-geometric object properties)

}User interaction results in modification of model and/or image

}This hardware and software framework is more than 4 decades old but is still useful.