| 摘要 |
Figure data processing apparatus and method in which data are sorted in a depth direction by executing hidden surface removing processing on all figure data to which a priority drawing number is not given, writing, in a display memory unit, portions or whole picture elements of figure data obtained after the hidden surface removing processing, again generating picture elements of each drawing figure, detecting entirely visible figures in which the picture element data written in the display memory unit are identical with the picture element data generated at the second time, and giving a drawing priority number to each of the entirely visible figures thus detected. The apparatus is adapted such that drawing figures are successively overwritten in the display memory unit based on the drawing priority numbers, as necessary.
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