Lines Matching defs:at
172 #define at(rx,ry,rz) ( rx * q[0] + ry * q[1] + rz * q[2] )
181 u = at(rx0, ry0, rz0);
183 v = at(rx1, ry0, rz0);
187 u = at(rx0, ry1, rz0);
189 v = at(rx1, ry1, rz0);
192 c = lerp(sy, a, b); /* interpolate in y at lo x */
195 u = at(rx0, ry0, rz1);
197 v = at(rx1, ry0, rz1);
201 u = at(rx0, ry1, rz1);
203 v = at(rx1, ry1, rz1);
206 d = lerp(sy, a, b); /* interpolate in y at hi x */