| 摘要 |
PROBLEM TO BE SOLVED: To provide a three-dimensional(3D) image generator with which hidden line/hidden face erasing processing can be performed at high speed in the storage area of small scale. SOLUTION: This 3D image generator has a rendering parameter input means 101 for inputting a rendering parameter containing information specifying a view point position and a glance direction at least, 3D model input means 102 for inputting a 3D model defining a 3D object as the cluster of polygons inside the 3D space, hidden line/hidden face erasing processing means 104 for clustering the polygons consisting of the 3D model into plural parts of groups included in boundary cubes not to be mutually overlapped on the 3D space and for discriminating the order of state of overlapping the respective parts watched from a view point and the order of state of overlapping respective faces inside the parts watched from the view point, and face data output means 107 for projecting the respective constitutive faces onto a 2D plane according to the discriminated order and outputting it as a 2D image. |
