Function boxCreate

deps/leptonica/src/boxbasic.c:164–195

---------------------------------------------------------------------* * Box creation, destruction and copy * *---------------------------------------------------------------------*/ ! * \brief boxCreate() * * \param[in] x, y, w, h * \return box, or NULL on error * * * Notes: * (1) This clips the box to the +quad. If no part of the *

 * </pre>
 */
BOX *
boxCreate(l_int32  x,
          l_int32  y,
          l_int32  w,
          l_int32  h)
{
BOX  *box;

    PROCNAME("boxCreate");

    if (w < 0 || h < 0)
        return (BOX *)ERROR_PTR("w and h not both >= 0", procName, NULL);
    if (x < 0) {  /* take part in +quad */
        w = w + x;
        x = 0;
        if (w <= 0)
            return (BOX *)ERROR_PTR("x < 0 and box off +quad", procName, NULL);
    }
    if (y < 0) {  /* take part in +quad */
        h = h + y;
        y = 0;
        if (h <= 0)
            return (BOX *)ERROR_PTR("y < 0 and box off +quad", procName, NULL);
    }

    if ((box = (BOX *)LEPT_CALLOC(1, sizeof(BOX))) == NULL)
        return (BOX *)ERROR_PTR("box not made", procName, NULL);
    boxSetGeometry(box, x, y, w, h);
    box->refcount = 1;

    return box;
}


/*!