| 摘要 |
PROBLEM TO BE SOLVED: To provide a three-dimensional graphics system by which arithmetic processing time is reduced and color display is realized. SOLUTION: A color converting part 2A respectively extracts high-order (k) (k<n) bits from (n) bits for R, G and B in RGB original color data C1 of geometrically arithmetically processed three-dimensional data D1, converts the RGB original color C1 to reduced color data C2 so as to assign the bits (k) by (k) for R, G and B and provides color data for there-dimensional data D2 for plotting operation processing. A plotting operation processing part 3A executes plotting operation processing, which includes color operation processing based on the reduced color data C2, to the plotting data D2 for D3 graphic provided by the color data converting part 2A and outputs the plotting data for there-dimensional graphic to a plotting until 4. The plotting until 4 displays there-dimensional graphic on the display screen of a display until in colors. |
