326                   double wx = bicubic[abs(dx)][0];  in alpha_calc()  local
328                   if (wx != 0 && arg->inside_fn(arg, x+dx/16, y+dy/16))  in alpha_calc()
329                      alphay += wx;  in alpha_calc()
387    double wx = fabs(arg->x1-arg->x2)/2;  in square_check_line()  local
391    if (square_check(x, y, cx-wx-w, cy-wy-w, cx+wx+w, cy+wy+w))  in square_check_line()
396       wx -= w;  in square_check_line()
398       if (wx > 0 && wy > 0 && square_check(x, y, cx-wx, cy-wy, cx+wx, cy+wy))  in square_check_line()
496    double wx = fabs(arg->x1-arg->x2)/2;  in circle_check_line()  local
500    if (circle_check(x, y, cx-wx-w, cy-wy-w, cx+wx+w, cy+wy+w))  in circle_check_line()
505       wx -= w;  in circle_check_line()
507       if (wx > 0 && wy > 0 && circle_check(x, y, cx-wx, cy-wy, cx+wx, cy+wy))  in circle_check_line()