| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a three-dimensional graphic arithmetic program capable of performing a high precision graphic computation while suppressing the increase of data quantity in the graphic computation for creating a composite picture of each three-dimensional graphic based on the correlation of a plurality of three-dimensional graphics, a dynamic link library, and a device for examining landscape by executing the three-dimensional graphic arithmetic program. <P>SOLUTION: A three-dimensional graphic arithmetic program makes a computer perform: a first step of expressing each three-dimensional graphic in a polyhedron; a second step of analyzing the correlations of all planes constituting another three-dimensional graphic relative to all planes constituting one three-dimensional graphic expressed in a polyhedron; a third step of removing portions in the planes constituting the one three-dimensional graphic overlapping with the other three-dimensional graphic and becoming a reverse side thereof, based on the analysis result of the correlation; and a fourth step of compositing three-dimensional graphics consisting of the planes having unremoved portions with each other and displaying a composite picture. <P>COPYRIGHT: (C)2013,JPO&INPIT |
