Lines Matching defs:du
134 GLfloat uu = (u - map->u1) * map->du;
154 GLfloat uu = (u - map->u1) * map->du;
181 GLfloat uu = (u - map->u1) * map->du;
204 GLfloat uu = (u - map->u1) * map->du;
212 GLfloat du[4], dv[4];
214 _math_de_casteljau_surf(map->Points, vertex, du, dv, uu, vv,
219 du[0] = du[0]*vertex[3] - du[3]*vertex[0];
220 du[1] = du[1]*vertex[3] - du[3]*vertex[1];
221 du[2] = du[2]*vertex[3] - du[3]*vertex[2];
229 CROSS3(&normal[0].f, du, dv);