| 摘要 |
PURPOSE:To speedily and highly accurately execute the line plotting processing of a three-dimensional plotting device. CONSTITUTION:A reciprocal data generating means 11 reads out data from an reciprocal data storing memory 12 storing the reciprocal data of the major axis direction length of a line to be plotted, X, Y and Z gradient calculating means 13 to 15 calculate the gradients of respective components by means of the reciprocal data and an increment normal generating means 16 plots a line in a frame buffer/Z buffer 17 by using the gradients. |
