Function cvNextNArraySlice

deps/opencv/modules/core/src/array.cpp:497–519

returns zero value if iteration is finished, non-zero otherwise

// returns zero value if iteration is finished, non-zero otherwise
CV_IMPL int cvNextNArraySlice( CvNArrayIterator* iterator )
{
    assert( iterator != 0 );
    int i, dims, size = 0;

    for( dims = iterator->dims; dims > 0; dims-- )
    {
        for( i = 0; i < iterator->count; i++ )
            iterator->ptr[i] += iterator->hdr[i]->dim[dims-1].step;

        if( --iterator->stack[dims-1] > 0 )
            break;

        size = iterator->hdr[0]->dim[dims-1].size;

        for( i = 0; i < iterator->count; i++ )
            iterator->ptr[i] -= (size_t)size*iterator->hdr[i]->dim[dims-1].step;

        iterator->stack[dims-1] = size;
    }

    return dims > 0;
}


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