tile_map_view.h

Go to the documentation of this file.

// *****************************************************************************
//
// Copyright (c) 2015, Southwest Research Institute® (SwRI®)
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//     * Neither the name of Southwest Research Institute® (SwRI®) nor the
//       names of its contributors may be used to endorse or promote products
//       derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// *****************************************************************************

#ifndef TILE_MAP_TILE_MAP_VIEW_H_
#define TILE_MAP_TILE_MAP_VIEW_H_

#include <string>

#include <boost/shared_ptr.hpp>

#include <tile_map/tile_source.h>
#include <tile_map/texture_cache.h>

#include <swri_transform_util/transform.h>

namespace tile_map
{
  class TileSource;

  struct Tile
  {
  public:
    QString url;
    size_t url_hash;
    int32_t level;
    int32_t subdiv_count;
    double subwidth;
    
    TexturePtr texture;
    
    std::vector<tf::Vector3> points;
    std::vector<tf::Vector3> points_t;
  };

  class TileMapView
  {
  public:
    TileMapView();

    void ResetCache();

    void SetTileSource(const boost::shared_ptr<TileSource>& tile_source);

    void SetTransform(const swri_transform_util::Transform& transform);
    
    void SetView(
      double latitude, 
      double longitude, 
      double scale, 
      int32_t width,
      int32_t height);
      
    void Draw();
    
  private:
    boost::shared_ptr<TileSource> tile_source_;

    swri_transform_util::Transform transform_;
    
    int32_t level_;
    
    int64_t center_x_;
    int64_t center_y_;
    
    int64_t size_;
    
    int32_t width_;
    int32_t height_;
    
    std::vector<Tile> tiles_;
    std::vector<Tile> precache_;

    TextureCachePtr tile_cache_;
    
    void ToLatLon(int32_t level, double x, double y, double& latitude, double& longitude);
    
    void InitializeTile(int32_t level, int64_t x, int64_t y, Tile& tile);
  };
}

#endif  // TILE_MAP_TILE_MAP_VIEW_H_