Data structure of outline font data and data storage manner null of outline font

摘要

PURPOSE: To make it possible to drastically decrease the data quantity of outline font data by storing the coordinate increment value of the coordinate axis of the smaller absolute value of the coordinate increment value and the value attaching codes to the absolute value of the respective absolute values of both large and small coordinate increment values. ;CONSTITUTION: The following contour line regulating points are defined for each of the plural contour line regulating points of an X-Y coordinate system in accordance with the respective coordinate increment values dx, dy of the respective X and Y coordinates. In such a case, identification flags for respectively identifying a first case of |dx|≤|dy| and dx.dy0, a second case of |dx||dy| and dx.dy0 and others, third and fourth cases, in place of the coordinate increment values of (dx, dy), the coordinate increment value for the coordinate axis of the smaller absolute value of dx and dy, the value attached with the code of the larger of the absolute value of dx and dy to the value of ||dx1-dy|| in the case of the first and second cases and the value attached with the code of the smaller absolute value in the case of the third and fourth cases are stored.;COPYRIGHT: (C)1996,JPO