365     dir = (3+3*(pt[mod(i+1,n)].x-pt[i].x)+(pt[mod(i+1,n)].y-pt[i].y))/2;  in calc_lon()
440     pivk[i] = mod(k1+j,n);  in calc_lon()
457   for (i=n-1; cyclic(mod(i+1,n),j,pp->lon[i]); i--) {  in calc_lon()
553     c = mod(pp->lon[mod(i-1,n)]-1,n);  in bestpolygon()
555       c = mod(i+1,n);  in bestpolygon()
674     j = po[mod(i+1,m)];  in adjust_vertices()
675     j = mod(j-po[i],n)+po[i];  in adjust_vertices()
721     j = mod(i-1,m);  in adjust_vertices()
867     j = mod(i+1, m);  in smooth()
868     k = mod(i+2, m);  in smooth()
937   i1 = mod(i+1, m);  in opti_penalty()
938   k1 = mod(k+1, m);  in opti_penalty()
945     k1 = mod(k+1, m);  in opti_penalty()
946     k2 = mod(k+2, m);  in opti_penalty()
959   p0 = pp->curve.c[mod(i,m)][2];  in opti_penalty()
960   p1 = pp->curve.vertex[mod(i+1,m)];  in opti_penalty()
961   p2 = pp->curve.vertex[mod(j,m)];  in opti_penalty()
962   p3 = pp->curve.c[mod(j,m)][2];  in opti_penalty()
1009   for (k=mod(i+1,m); k!=j; k=k1) {  in opti_penalty()
1010     k1 = mod(k+1,m);  in opti_penalty()
1032     k1 = mod(k+1,m);  in opti_penalty()
1092 …convc[i] = sign(dpara(pp->curve.vertex[mod(i-1,m)], pp->curve.vertex[i], pp->curve.vertex[mod(i+1,…  in opticurve()
1103     i1 = mod(i+1, m);  in opticurve()
1126       r = opti_penalty(pp, i, mod(j,m), &o, opttolerance, convc, areac);  in opticurve()
1149       pp->ocurve.tag[i]     = pp->curve.tag[mod(j,m)];  in opticurve()
1150       pp->ocurve.c[i][0]    = pp->curve.c[mod(j,m)][0];  in opticurve()
1151       pp->ocurve.c[i][1]    = pp->curve.c[mod(j,m)][1];  in opticurve()
1152       pp->ocurve.c[i][2]    = pp->curve.c[mod(j,m)][2];  in opticurve()
1153       pp->ocurve.vertex[i]  = pp->curve.vertex[mod(j,m)];  in opticurve()
1154       pp->ocurve.alpha[i]   = pp->curve.alpha[mod(j,m)];  in opticurve()
1155       pp->ocurve.alpha0[i]  = pp->curve.alpha0[mod(j,m)];  in opticurve()
1156       pp->ocurve.beta[i]    = pp->curve.beta[mod(j,m)];  in opticurve()
1162       pp->ocurve.c[i][2] = pp->curve.c[mod(j,m)][2];  in opticurve()
1163 …   pp->ocurve.vertex[i] = interval(opt[j].s, pp->curve.c[mod(j,m)][2], pp->curve.vertex[mod(j,m)]);  in opticurve()
1174     i1 = mod(i+1,om);  in opticurve()