Method multiTable2DFromConfig

source/game/StarStoredFunctions.cpp:250–312

}

MultiTable2D FunctionDatabase::multiTable2DFromConfig(Json descriptor) {
  try {
    String interpolationModeString = descriptor.getString(0);
    String boundModeString = descriptor.getString(1);

    List<double> xaxis;
    List<double> yaxis;
    MultiArray2D points;

    auto grid = descriptor.getArray(2);

    for (size_t y = 0; y < grid.size(); ++y) {
      auto row = grid[y].toArray();
      if (y == 0) {
        for (size_t x = 0; x < row.size(); ++x) {
          if (x > 0)
            xaxis.append(row[x].toFloat());
        }
        points.resize({row.size() - 1, grid.size() - 1});
      } else {
        yaxis.append(row[0].toFloat());
        auto cells = row[1].toArray();
        if (cells.size() != xaxis.size())
          throw StarException("Number of sample points doesn't match axis size.");
        for (size_t x = 0; x < cells.size(); x++)
          points.set({x, y - 1}, cells[x].toFloat());
      }
    }

    InterpolationMode interpolationMode;
    if (interpolationModeString.equalsIgnoreCase("HalfStep")) {
      interpolationMode = InterpolationMode::HalfStep;
    } else if (interpolationModeString.equalsIgnoreCase("Linear")) {
      interpolationMode = InterpolationMode::Linear;
    } else if (interpolationModeString.equalsIgnoreCase("Cubic")) {
      interpolationMode = InterpolationMode::Cubic;
    } else {
      throw StoredFunctionException(strf("Unrecognized InterpolationMode '{}'", interpolationModeString));
    }

    BoundMode boundMode;
    if (boundModeString.equalsIgnoreCase("Clamp")) {
      boundMode = BoundMode::Clamp;
    } else if (boundModeString.equalsIgnoreCase("Extrapolate")) {
      boundMode = BoundMode::Extrapolate;
    } else if (boundModeString.equalsIgnoreCase("Wrap")) {
      boundMode = BoundMode::Wrap;
    } else {
      throw StoredFunctionException(strf("Unrecognized BoundMode '{}'", boundModeString));
    }

    MultiTable2D table;
    table.setRange(0, std::vector<double>(xaxis.begin(), xaxis.end()));
    table.setRange(1, std::vector<double>(yaxis.begin(), yaxis.end()));
    table.setInterpolationMode(interpolationMode);
    table.setBoundMode(boundMode);
    table.array() = points;