Title :
Simple rotation procedure for a graphical display system
Author :
Gosling, J.B. ; Ingham, R.M.
Author_Institution :
University of Manchester, Department of Computer Science, Manchester, UK
Abstract :
Rotation of graphical objects consisting of nested subpictures by multiples of 90° can be achieved by adding or subtracting the rotational parameters. This is much simpler than the matrix multiplication usually assumed. The technique is particularly useful in integrated-circuit design, since `objects¿ are only rotated by multiples of 90°.
Keywords :
computer graphics; graphical display system; nested subpictures; rotation procedure;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19760396
