| 摘要 |
PURPOSE: To process an object at a high speed by using a simplified format for expressing object output line data which can be processed easily and quickly in an object base graphic system in which each object is explained by using a quadratic polymoninal. CONSTITUTION: The polynominal corresponding to a fragment is defined by 'START-PIXEL' location, 'ΔPIXEL' value, 'ΔΔPIXEL' value, 'START-LINE', and 'END-LINE' and the pixel location of a curve fragment of an arbitrary line (n) is given by a formula, PIXEL (linen+1 )=PIXEL (line)n +ΔPIXEL (linen ) and PIXEL (linen+1 )=ΔPIXEL (linen )+ΔΔPIXEL, where, PIXEL (linen START- LINE)=START-PIXEL andΔPIXEL (linen START- LINE)=ΔPIXEL. |
