System for and method of implementing refraction mapping

Details System for and method of implementing refraction mapping System for and method of implementing refraction mapping

G - Physics

06

T

G06T 15/50 (2006.01) A63F 13/10 (2006.01) G06T 15/10 (2006.01) G06T 15/20 (2006.01)

Patent

CA 2363175

A system for implementing a refraction mapping is arranged that a refracted texture address is determined, as a normal vector at an intersection point of a boundary surface of at least two different media and a visual line vector is defined to be n, and as a visual line unit vector is defined to be v, a variable k is determined so that the sum (n + kv) of the normal vector n and a value kv of which the visual line unit vector v is multiplied by a variable k becomes parallel to the texture plane. At least two different media are an air, water or a glass. In such system, an object has a portion projecting from the water surface, and a portion sinking under the water, and for at least a portion of the texture associated with the portion sinking under the water, a refracted texture address that is to be displaced according to a refraction phenomena can be determined.

La présente invention concerne un système de mise en oeuvre d'un mappage de réfraction par lequel on détermine une adresse de texture réfractée prenant la forme d'un vecteur normal coupant en un point la surface de séparation entre au moins deux milieux. On définit un vecteur ligne de vision "n" et un vecteur de ligne de vision "v". On calcule ensuite une variable "k" telle que la somme n + kv définisse une parallèle au plan de texture. Deux des milieux considérés sont l'air, l'eau et le verre. Un tel système permet de placer un objet à la surface de séparation, une partie immergée, et une partie émergée. Et pour au moins une partie de la texture associée à la partie immergée, il est possible de calculer une adresse de texture réfractée que l'on doit déplacer en fonction d'un phénomène de réfraction.

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