replaced 'archimedean' with 'arcm::in()'

rug.cpp

@@ -608,7 +608,7 @@ EX void buildRug() {
     cell *c = p.first;
     rugpoint *v = p.second;
     
-    if(archimedean || (euclid && quotient)) {
+    if(arcm::in() || (euclid && quotient)) {
       rugpoint *p[MAX_EDGE+1];
       for(int j=0; j<c->type; j++) p[j] = findOrAddRugpoint(ggmatrix(c) * get_corner_position(c, j), v->dist);
       for(int j=0; j<c->type; j++) addTriangle(v, p[j], p[(j+1) % c->type]);