Function pixDisplayPtaaPattern

deps/leptonica/src/ptafunc1.c:2414–2453

! * \brief pixDisplayPtaaPattern() * * \param[in] pixd 32 bpp * \param[in] pixs 1, 2, 4, 8, 16 or 32 bpp; 32 bpp if in place * \param[in] ptaa giving locations at which the pattern is displayed * \param[in] pixp 1 bpp pattern to be placed such that its reference * point co-locates with each point in pta * \param[in] cx, cy reference point in pattern * \

 * </pre>
 */
PIX *
pixDisplayPtaaPattern(PIX      *pixd,
                      PIX      *pixs,
                      PTAA     *ptaa,
                      PIX      *pixp,
                      l_int32   cx,
                      l_int32   cy)
{
l_int32   i, n;
l_uint32  color;
PIXCMAP  *cmap;
PTA      *pta;

    PROCNAME("pixDisplayPtaaPattern");

    if (!pixs)
        return (PIX *)ERROR_PTR("pixs not defined", procName, pixd);
    if (!ptaa)
        return (PIX *)ERROR_PTR("ptaa not defined", procName, pixd);
    if (pixd && (pixd != pixs || pixGetDepth(pixd) != 32))
        return (PIX *)ERROR_PTR("invalid pixd", procName, pixd);
    if (!pixp)
        return (PIX *)ERROR_PTR("pixp not defined", procName, pixd);

    if (!pixd)
        pixd = pixConvertTo32(pixs);

        /* Use 256 random colors */
    cmap = pixcmapCreateRandom(8, 0, 0);
    n = ptaaGetCount(ptaa);
    for (i = 0; i < n; i++) {
        pixcmapGetColor32(cmap, i % 256, &color);
        pta = ptaaGetPta(ptaa, i, L_CLONE);
        pixDisplayPtaPattern(pixd, pixd, pta, pixp, cx, cy, color);
        ptaDestroy(&pta);
    }

    pixcmapDestroy(&cmap);
    return pixd;
}


/*!