text: /*****************************************************************************************
   *                                                                                       *
   * OpenSpace                                                                             *
   *                                                                                       *
   * Copyright (c) 2014-2018                                                               *
   *                                                                                       *
   * Permission is hereby granted, free of charge, to any person obtaining a copy of this  *
   * software and associated documentation files (the "Software"), to deal in the Software *
   * without restriction, including without limitation the rights to use, copy, modify,    *
   * merge, publish, distribute, sublicense, and/or sell copies of the Software, and to    *
   * permit persons to whom the Software is furnished to do so, subject to the following   *
   * conditions:                                                                           *
   *                                                                                       *
   * The above copyright notice and this permission notice shall be included in all copies *
   * or substantial portions of the Software.                                              *
   *                                                                                       *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,   *
   * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A         *
   * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT    *
   * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF  *
   * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE  *
   * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                                         *
   ****************************************************************************************/
  
  #ifndef __OPENSPACE_MODULE_ISWA___DATAPROCESSOR___H__
  #define __OPENSPACE_MODULE_ISWA___DATAPROCESSOR___H__
  
  #include <ghoul/glm.h>
  #include <glm/gtx/std_based_type.hpp>
  #include <memory>
  #include <set>
  #include <string>
  #include <vector>
  
  namespace openspace {
  
  namespace properties { class SelectionProperty; }
  
  class Histogram;
  
  class DataProcessor {
      //friend class IswaBaseGroup;
  
  public:
      DataProcessor() = default;
      virtual ~DataProcessor() = default;
  
      virtual std::vector<std::string> readMetadata(const std::string& data,
          glm::size3_t& dimensions) = 0;
  
      virtual void addDataValues(const std::string& data,
          properties::SelectionProperty& dataOptions) = 0;
  
      virtual std::vector<float*> processData(const std::string& data,
          properties::SelectionProperty& dataOptions, glm::size3_t& dimensions) = 0;
  
      void useLog(bool useLog);
      void useHistogram(bool useHistogram);
      void normValues(glm::vec2 normValues);
      glm::size3_t dimensions() const;
      glm::vec2 filterValues() const;
  
      void clear();
  
  protected:
      float processDataPoint(float value, int option);
  
      float normalizeWithStandardScore(float value, float mean, float sd,
          const glm::vec2& normalizationValues = glm::vec2(1.f, 1.f));
  
      float unnormalizeWithStandardScore(float value, float mean, float sd,
          const glm::vec2& normalizationValues = glm::vec2(1.f, 1.f));
  
      void initializeVectors(int numOptions);
      void calculateFilterValues(const std::vector<int>& selectedOptions);
      void add(const std::vector<std::vector<float>>& optionValues,
          const std::vector<float>& sum);
  
      glm::size3_t _dimensions;
      bool _useLog = false;
      bool _useHistogram = false;
      glm::vec2 _normValues = glm::vec2(1.f);
      glm::vec2 _filterValues = glm::vec2(0.f);
  
      std::vector<float> _min;
      std::vector<float> _max;
      std::vector<float> _sum;
      std::vector<float> _standardDeviation;
      std::vector<float> _numValues;
      std::vector<std::unique_ptr<Histogram>> _histograms;
      std::set<std::string> _coordinateVariables = { "x", "y", "z", "phi", "theta" };
  
      glm::vec2 _histNormValues = glm::vec2(10.f, 10.f);
  };
  
  } // namespace openspace
  
  #endif // __OPENSPACE_MODULE_ISWA___DATAPROCESSOR___H__
  