Lines Matching refs:dv
182 GLfloat vv = (v - map->v1) * map->dv;
205 GLfloat vv = (v - map->v1) * map->dv;
212 GLfloat du[4], dv[4];
214 _math_de_casteljau_surf(map->Points, vertex, du, dv, uu, vv,
223 dv[0] = dv[0]*vertex[3] - dv[3]*vertex[0];
224 dv[1] = dv[1]*vertex[3] - dv[3]*vertex[1];
225 dv[2] = dv[2]*vertex[3] - dv[3]*vertex[2];
229 CROSS3(&normal[0].f, du, dv);