| 摘要 |
PROBLEM TO BE SOLVED: To perform plotting processing by converting plot information, by which the effect of complicated color such as gradation or other effect including a clip is expressed, to a plotting command. SOLUTION: It is judged whether the plot information can be compressed or not (S4 and S10) and the plot information judged as compressible is stored and managed (S7). When plot information is already managed, that plot information is compared with the plot information judged as compressible and in the case of polygon plotting, in which both the plot information are composed of the same apex stream, a difference from the plotting command generated for polygon plotting composed of the same apex stream is found. According to that difference, the information is generated as a plotting command to the plot information judged as compressible (S9 and S15). |
