| 摘要 |
PROBLEM TO BE SOLVED: To provide a quick picture painting-out processing which especially facilitates generation of sides. SOLUTION: With respect to a processing where each side of a polygon is calculated by using digital differential analyzer(DDA) system of Bresenham and spaces between sides obtained by this calculation are painted out, 'perpendicular information' is added to DDA processing data; and if sides constituting the polygon includes a perpendicular, information is read out from 'perpendicular information', and the perpendicular is used as it is without DDA processing calculation. |
