3d:: sloppy range checking option

hypgraph.cpp

@@ -1670,7 +1670,7 @@ bool do_draw(cell *c, const transmatrix& T) {
       }
     else {
       ld dist = hdist0(tC0(T));
-      if(dist > sightranges[geometry] + corner_bonus) return false;
+      if(dist > sightranges[geometry] + (vid.sloppy_3d ? 0 : corner_bonus)) return false;
       if(dist <= extra_generation_distance) setdist(c, 7, c);
       }
     return true;