Computer-readable recording medium which stores fabric model generation program, fabric model generation apparatus and fabric model generation method

A fabric model generation apparatus for generating a fabric model which is a three-dimensional model of a napped fabric that has a base texture part configured by a weaving texture or a knitting texture and napped parts rising from the base texture part, the fabric model generation apparatus comprising:

• a base texture model acquisition portion for acquiring a base texture model, which is a three-dimensional model of the base texture part created beforehand in a three-dimensional space;
• an information acquisition portion for acquiring a degree of defiberation representing a degree of a characteristic of yarn fibers attempting to open toward a leading end part of each of yarns used in the napped parts, with the yarn fibers serving to configure the yarns, a yarn stiffness coefficient representing a degree of a characteristic of the yarns attempting not to flex, and a repulsion coefficient representing a degree of a characteristic of the yarns attempting to repel each other;
• a placement portion for calculating, on the basis of the degree of defiberation, an initial shape of napped models, which are three-dimensional models of the napped part, and placing the napped models having the calculated initial shape in predetermined positions of the base texture model;
• and
• a napped model generation portion for calculating a flexure energy representing a degree of flexing of the napped models on the basis of the yarn stiffness coefficient, calculating a repulsion energy representing an energy between the napped models repelling each other on the basis of the repulsion coefficient, and correcting the shape of the napped models so that the both energies become minimum.

A fabric model generation method for generating a fabric model which is a three-dimensional model of a napped fabric that has a base texture part configured by a weaving texture or a knitting texture and napped parts rising from the base texture part, the fabric model generation method comprising:

• a step in which a computer acquires a base texture model, which is a three-dimensional model of the base texture part created beforehand in a three-dimensional space;
• a step in which the computer acquires a degree of defiberation representing a degree of a characteristic of yarn fibers attempting to open toward a leading end part of each of yarns used in the napped parts, with the yarn fibers serving to configure the yarns, a yarn stiffness coefficient representing a degree of a characteristic of the yarns attempting not to flex, and a repulsion coefficient representing a degree of a characteristic of the yarns attempting to repel each other;
• a step in which the computer calculates, on the basis of the degree of defiberation, an initial shape of napped models, which are three-dimensional models of the napped part, and places the napped models having the calculated initial shape in predetermined positions of the base texture model;
• and
• a step in which the computer calculates a flexure energy representing a degree of flexing of the napped models on the basis of the yarn stiffness coefficient, calculates a repulsion energy representing an energy between the napped models repelling each other on the basis of the repulsion coefficient, and corrects the shape of the napped models so that the both energies become minimum.