Method and apparatus for entering graphics.

摘要

A graphic form or figure drawn on a drawing and larger than the read-out area TRA of a tablet is divided into graphic patterns which are successively read by displacing the drawing. The extent to which the drawing is displaced is recognized, and graphic data read before and after the drawing is displaced is converted into data on one coordinate system and entered as inputs. For entering the graphic data, two points Ps,, PS2 are specified on the drawing, and the coordinates of the specified points prior (A) and subsequent (B) to displacement of the drawing are read and stored in first through fourth registers. The stored coordinates and the coordinates of points on the figure are entered into a coordinate transformation unit which effects arithmetic operations of coordinate transformation.