METHOD FOR EXPRESSING IMAGE AND PROGRAM USED FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To enhance a sense of reality in expressing a phenomenon of which a generation state changes depending on a specific direction decided by a component of an environment set in a virtual three dimensional space. SOLUTION: A plurality of representative points 4 are set on a surface of an object 2 in the virtual three dimensional space 1. On the basis of a relation between a direction of a normal N of the object 2 on each of the representative points 4 and a specific direction decided by the environment of the virtual three dimensional space 1, necessity of mapping in each of the representative points 4 of a texture 8 which expresses the phenomena of which the generation state changes in relation to the specific direction is determined. The texture 8 is mapped in an area 7 corresponded to the representative point 4 of the texture which is determined that mapping is necessary.