RasterLevel.h

#pragma once
 
#include <vector>
 
#include "../GeodeticExtent.h"
#include "../Extent.h"
 
namespace Cogs
{
  class RasterSource;
  struct RasterTileRegion;
  struct RasterTileIdentifier;
 
  class COGSTERRAIN_API RasterLevel
  {
  public:
    RasterLevel(RasterSource * source,
                int level,
                GeodeticExtent extent,
                float noData,
                int longitudePosts,
                int latitudePosts,
                int longitudePostsPerTile,
                int latitudePostsPerTile,
                double postDeltaLongitude,
                double postDeltaLatitude);
 
    RasterLevel(const RasterLevel & rasterLevel) = default;
 
    RasterSource * getSource(void) const { return source; }
    int getLevel(void) const { return level; }
 
    const GeodeticExtent & getGeoExtent(void) const { return extent;}
 
    float getNoData() const { return noData; }
 
    int getLongitudePosts(void) const { return longitudePosts; }
    int getLatitudePosts(void) const { return latitudePosts; }
    int getLongitudePostsPerTile(void) const { return longitudePostsPerTile; }
    int getLatitudePostsPerTile(void) const { return latitudePostsPerTile; }
 
    double getPostDeltaLongitude(void) const { return postDeltaLongitude; }
    double getPostDeltaLatitude(void) const { return postDeltaLatitude; }
 
    double longitudeToIndex(double longitude) const;
    double latitudeToIndex(double latitude) const;
    double indexToLongitude(int longitudeIndex) const;
    double indexToLatitude(int latitudeIndex) const;
 
    void getTilesInExtent(const Extent & extent, std::vector<RasterTileIdentifier> & ids, std::vector<Extent> & extents) const;
    void getTilesInExtent(const Extent & extent, std::vector<RasterTileRegion> & results) const;
 
    bool isTileIndexValid(int x, int y) const
    {
      bool xValid = x >= 0 && x < (longitudePosts / longitudePostsPerTile);
      bool yValid = y >= 0 && y < (latitudePosts / latitudePostsPerTile);
 
      return xValid && yValid;
    }
 
    const Extent & getIndexExtent() const { return indexExtent; }
 
  private:
    RasterSource * source;
    int level;
    GeodeticExtent extent;
    Extent indexExtent;
    float noData;
 
    int longitudePosts;
    int latitudePosts;
 
    int longitudePostsPerTile;
    int latitudePostsPerTile;
 
    double postDeltaLongitude;
    double postDeltaLatitude;
  };
}