METHOD FOR REALIZING REAL-TIME IMAGES OF THREE-DIMENSIONAL MODELS OF JEWELERY PIECES

摘要

A method for rendering real-time images of three-dimensional models of jewelery pieces comprising at least one transparent or translucent stone (S) comprising facets, comprising the steps of determining a reference point (Pr) in the stone ( S), calculate the components of the normals (N) to the facets of the stone (S) in a discrete set of directions around the reference point (Pr), and store these components in a map of normals (texNormal), simulate reflections of the light inside the stone (S) by calculating an approximation of the intersection point (Isph) of a radius (Rr, R1, R2, R3) and the stone (S) using a geometric shape simplified (Sph) of the stone, and using, to calculate the direction of the reflected ray (R1, R2, R3), a normal (N) extracted from the normal map (texNormal), corresponding to the point (Is) of the stone surface (S) located in the direction of the point (Isph) by r contribution to the reference point (Pr).