METHOD AND DEVICE FOR GENERATING PATTERN SIMULATIVELY REPRESENTING WRINKLE, AND PRINTED MATTER HAVING THE SAME PATTERN

摘要

PROBLEM TO BE SOLVED: To generate the pattern which simulatively represents wrinkles by using a computer. SOLUTION: Various parameters which are needed for a process are inputted (S41) and a group of regular triangles filling a plane is generated on the XY plane (S42). Coordinate values of a UV coordinate system in which a texture image is taken are assigned to the respective vertexes An of the regular triangle group (S43). The respective vertexes An are displaced in three dimensions at random with random numbers and a wrinkled plane is formed of the deformed triangles (S44 and S45). For the wrinkled plane, luminance calculation is performed in consideration of a given assumed light source to find luminance at each part (S46). The texture image is inputted to the UV coordinate system (S47) and texture mapping considering the luminance is performed (S48) by using the texture coordinate values (u, v) of the respective vertexes An on the wrinkled plane as a clue. The wrinkled plane after the texture is mapped is projected on the XY plane to obtain and print two-dimensional image data (S49).