Method open

LASlib/src/lasreaderbuffered.cpp:142–363

}

BOOL LASreaderBuffered::open()
{
  if (!lasreadopener.active())
  {
    laserror("no input name");
    return FALSE;
  }

  // open the main file

  lasreader = lasreadopener.open();
  if (lasreader == 0)
  {
    laserror("opening '%s'", lasreadopener.get_file_name());
    return FALSE;
  }

  // populate the merged header
  header = lasreader->header;

  // unlink pointers in other header so their data does not get deallocated twice
  lasreader->header.unlink();

  // special check for attributes in extra bytes
  if (header.number_attributes)
  {
    header.number_attributes = 0;
    header.init_attributes(lasreader->header.number_attributes, lasreader->header.attributes);
  }

  // initialize the point with the header info

  if (header.laszip)
  {
    if (!point.init(&header, header.laszip->num_items, header.laszip->items, &header)) return FALSE;
  }
  else
  {
    if (!point.init(&header, header.point_data_format, header.point_data_record_length, &header)) return FALSE;
  }

  // maybe we have to look for neighbors from which we load buffer points

  if (lasreadopener_neighbors.active())
  {
    F64 xyz;

    lasreadopener_neighbors.set_inside_rectangle(header.min_x - buffer_size, header.min_y - buffer_size, header.max_x + buffer_size, header.max_y + buffer_size);

    // store current counts and bounding box in LASoriginal VLR

    header.set_lasoriginal();

    // force identical scale on the neighbors

    lasreadopener_neighbors.set_scale_factor(&header.x_scale_factor);

    // force identical offset on the neighbors