450    float circle[3][2];  in make_circle()  local
492    circle[0][0] = b->x1 + normals[0][0]*offset;  in make_circle()
493    circle[0][1] = b->y1 + normals[0][1]*offset;  in make_circle()
495    circle[1][0] = 0.5*(b->x1 + b->x4) + normals[1][0]*offset;  in make_circle()
496    circle[1][1] = 0.5*(b->y1 + b->y4) + normals[1][1]*offset;  in make_circle()
498    circle[2][0] = b->x4 + normals[2][0]*offset;  in make_circle()
499    circle[2][1] = b->y4 + normals[2][1]*offset;  in make_circle()
504       o->x1 = circle[i][0];  in make_circle()
505       o->y1 = circle[i][1];  in make_circle()
506       o->x2 = circle[i][0] - normals[i][1]*kappa;  in make_circle()
507       o->y2 = circle[i][1] + normals[i][0]*kappa;  in make_circle()
508       o->x3 = circle[i+1][0] + normals[i+1][1]*kappa;  in make_circle()
509       o->y3 = circle[i+1][1] - normals[i+1][0]*kappa;  in make_circle()
510       o->x4 = circle[i+1][0];  in make_circle()
511       o->y4 = circle[i+1][1];  in make_circle()