Function selection_do_randline

src/selvar.c:682–723

}

void
selection_do_randline(
    coordxy x1, coordxy y1,
    coordxy x2, coordxy y2,
    schar rough,
    schar rec,
    struct selectionvar *ov)
{
    int mx, my;
    int dx, dy;

    if (rec < 1 || (x2 == x1 && y2 == y1))
        return;

    if (rough > max(abs(x2 - x1), abs(y2 - y1)))
        rough = max(abs(x2 - x1), abs(y2 - y1));

    if (rough < 2) {
        mx = ((x1 + x2) / 2);
        my = ((y1 + y2) / 2);
    } else {
        do {
            dx = rn2(rough) - (rough / 2);
            dy = rn2(rough) - (rough / 2);
            mx = ((x1 + x2) / 2) + dx;
            my = ((y1 + y2) / 2) + dy;
        } while ((mx > COLNO - 1 || mx < 0 || my < 0 || my > ROWNO - 1));
    }

    if (!selection_getpoint(mx, my, ov)) {
        selection_setpoint(mx, my, ov, 1);
    }

    rough = (rough * 2) / 3;

    rec--;

    selection_do_randline(x1, y1, mx, my, rough, rec, ov);
    selection_do_randline(mx, my, x2, y2, rough, rec, ov);

    selection_setpoint(x2, y2, ov, 1);
}

void
selection_iterate(