THREE-DIMENSIONAL PLOTTING METHOD, THREE-DIMENSIONAL PLOTTING SYSTEM, PROGRAM TO MAKE COMPUTER EXECUTE THREE-DIMENSIONAL PLOTTING METHOD AND COMPUTER READABLE RECORDING MEDIUM IN WHICH THE SAME PROGRAM IS RECORDED

摘要

PROBLEM TO BE SOLVED: To perform the plotting processing at high speed by omitting an unnecessary calculation processing in the case of plotting of a three-dimensional model.;SOLUTION: Regarding the respective objects Oi, the maximum number of plotting odts dxi, dyi, dzi to indicate how many dots x, y, z directions are expressed at maximum when the objects are plotted on a picture is calculated based on the maximum dimensions Xi, Yi, Zi of each of the x, y, z directions, display magnification and the viewpoint direction (a step 108). Size relation between the maximum number of the plotting dots dxi, dyi, dzi and prescribed reference values Lx, Ly, Lz corresponding to each of them is discriminated (a step 110) and whether the objects are plotted as the original three-dimensional shape, or plotted by simplifying them in the segment shapes or the plotting is omitted (or plotted as points) is decided (a step 112).;COPYRIGHT: (C)2002,JPO