String Descriptions of Data for Display
نویسنده
چکیده
A Picture Description Language (PDL) and a Picture Calculus have been developed for the formal description and manipulation of pictures. A display program which utilizes PDL string descriptions as the principal data structure has been developed. This display program permits the generation of drawings on a computer-controlled cathode ray tube and allows transformations according to the rules of the picture calculus. A description of the complete data structure for this display program is presented, and the type of transformations and manipulations possible are shown.
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