Method read

plugins/icebridge/io/IcebridgeReader.cpp:115–189

point_count_t IcebridgeReader::read(PointViewPtr view, point_count_t count)
{
    //All data we read for icebridge is currently 4 bytes wide, so
    //  just allocate once and forget it.
    //This could be a huge allocation.  Perhaps we should do something
    //  in the icebridge handler?

    PointId startId = view->size();
    point_count_t remaining = m_hdf5Handler.getNumPoints() - m_index;
    count = (std::min)(count, remaining);

    std::vector<uint8_t> rawData(count * sizeof(float));

    //Not loving the position-linked data, but fine for now.
    Dimension::IdList dims = dimensions();
    auto di = dims.begin();
    for (auto ci = hdf5Columns.begin(); ci != hdf5Columns.end(); ++ci, ++di)
    {
        PointId nextId = startId;
        PointId idx = m_index;
        const hdf5::Hdf5ColumnData& column = *ci;

        try
        {
            m_hdf5Handler.getColumnEntries(rawData.data(), column.name, count,
                m_index);
            void *p = (void *)rawData.data();

            // This is ugly but avoids a test in a tight loop.
            if (column.predType == H5::PredType::NATIVE_FLOAT)
            {
                // Offset time is in ms but icebridge stores in seconds.
                if (*di == Dimension::Id::OffsetTime)
                {
                    float *fval = (float *)p;
                    for (PointId i = 0; i < count; ++i)
                    {
                        view->setField(*di, nextId++, *fval * 1000);
                        fval++;
                    }
                }
                else if (*di == Dimension::Id::X)
                {
                    float *fval = (float *)p;
                    for (PointId i = 0; i < count; ++i)
                    {
                        double dval = (double)(*fval);
                        // Longitude is 0-360. Convert
                        dval = Utils::normalizeLongitude(dval);
                        view->setField(*di, nextId++, dval);
                        fval++;
                    }

                }
                else
                {
                    float *fval = (float *)p;
                    for (PointId i = 0; i < count; ++i)