Method PriorityToDepth

libs/drape_frontend/apply_feature_functors.cpp:493–532

}

double BaseApplyFeature::PriorityToDepth(int priority, drule::TypeT ruleType, double areaDepth) const
{
  double depth = priority;

  if (ruleType == drule::area || ruleType == drule::line)
  {
    if (depth < drule::kBasePriorityBgTop)
    {
      ASSERT(ruleType == drule::area, (m_f.DebugString()));
      ASSERT_GREATER_OR_EQUAL(depth, drule::kBasePriorityBgBySize, (m_f.DebugString()));
      // Prioritize BG-by-size areas by their bbox sizes instead of style-set priorities.
      ASSERT_GREATER_OR_EQUAL(areaDepth, drule::kBaseDepthBgBySize, (m_f.DebugString()));
      depth = areaDepth;
    }
    else if (depth < drule::kBasePriorityFg)
    {
      // Adjust BG-top features depth range so that it sits just above the BG-by-size range.
      depth = drule::kBaseDepthBgTop + (depth - drule::kBasePriorityBgTop) * drule::kBgTopRangeFraction;
    }

    // Shift the depth according to layer=* value.
    int8_t const layer = m_f.GetLayer();
    if (layer != feature::LAYER_EMPTY)
      depth += layer * drule::kLayerPriorityRange;
  }
  else
  {
    // Note we don't adjust priorities of "point-styles" according to layer=*,
    // because their priorities are used for displacement logic only.
    /// @todo(pastk) we might want to hide e.g. a trash bin under man_made=bridge or a bench on underground railway
    /// station?

    // Check overlays priorities range.
    ASSERT(-drule::kOverlaysMaxPriority <= depth && depth < drule::kOverlaysMaxPriority, (depth, m_f.DebugString()));
  }

  // Check no features are clipped by the depth range constraints.
  ASSERT(dp::kMinDepth <= depth && depth <= dp::kMaxDepth, (depth, m_f.DebugString()));
  return depth;
}

ApplyPointFeature::ApplyPointFeature(TileKey const & tileKey, TInsertShapeFn const & insertShape, FeatureType & f,
                                     CaptionDescription const & captions)