Wyvill, Brian2008-02-272008-02-271982-07-01http://hdl.handle.net/1880/46216The idea that recursion is a powerful tool for use by graphic artists and designers has not previously been exploited to any great extent. Although any recursive process may be expressed iteratively, a certain class of pictures is more easily visualised recursively and more concisely defined. This paper describes GROPER, an interactive graphics language designed to test the hypothesis that recursion can fill a need for the designer and offer new possibilities to the computer artist. The language enables recursion to be used to describe pictures which are difficult or impossible to define in other graphics systems without considerable programming effort.EngComputer Scienceunknown1982-99-1810.11575/PRISM/31240