Three-dimensional image generating apparatus, storage medium storing a three-dimensional image generating program, and three-dimensional image generating method

摘要

A video game apparatus as a three-dimensional image generating apparatus includes a CPU. The CPU works together with a GPU to generate and display a game image. More specifically, some objects are arranged in a virtual three-dimensional space. The virtual three-dimensional space is converted into a viewpoint coordinate and then projected and converted. After the projection conversion, determination points are set corresponding to a specific object, and the degree of hiding of the specific object is calculated on basis of a Z value of the specific object and Z values of the determination points. According to the degree of hiding, the movement of a viewpoint is controlled or the brightness of the light source is changed.