text: /*****************************************************************************************
   *                                                                                       *
   * OpenSpace                                                                             *
   *                                                                                       *
   * Copyright (c) 2014-2022                                                               *
   *                                                                                       *
   * 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_SPACECRAFTINSTRUMENTS___RENDERABLESHADOWCYLINDER___H__
  #define __OPENSPACE_MODULE_SPACECRAFTINSTRUMENTS___RENDERABLESHADOWCYLINDER___H__
  
  #include <openspace/rendering/renderable.h>
  
  #include <openspace/properties/optionproperty.h>
  #include <openspace/properties/stringproperty.h>
  #include <openspace/properties/scalar/intproperty.h>
  #include <openspace/properties/scalar/floatproperty.h>
  #include <openspace/properties/vector/vec3property.h>
  #include <ghoul/opengl/ghoul_gl.h>
  #include <ghoul/opengl/uniformcache.h>
  
  namespace ghoul::opengl { class ProgramObject; }
  
  namespace openspace {
  
  namespace documentation { struct Documentation; }
  
  struct RenderData;
  struct UpdateData;
  
  class RenderableShadowCylinder : public Renderable {
  public:
      RenderableShadowCylinder(const ghoul::Dictionary& dictionary);
  
      void initializeGL() override;
      void deinitializeGL() override;
  
      bool isReady() const override;
      void render(const RenderData& data, RendererTasks& rendererTask) override;
      void update(const UpdateData& data) override;
  
      static documentation::Documentation Documentation();
  
  private:
      struct CylinderVBOLayout {
          float x = 0.f;
          float y = 0.f;
          float z = 0.f;
          float e = 0.f;
      };
  
      void createCylinder(double time);
  
      properties::IntProperty _numberOfPoints;
      properties::FloatProperty _shadowLength;
      properties::Vec3Property _shadowColor;
      properties::OptionProperty _terminatorType;
      properties::StringProperty _lightSource;
      properties::StringProperty _observer;
      properties::StringProperty _body;
      properties::StringProperty _bodyFrame;
      properties::OptionProperty _aberration;
  
      ghoul::opengl::ProgramObject* _shader = nullptr;
      UniformCache(modelViewProjectionTransform, shadowColor, opacity) _uniformCache;
  
      glm::dmat3 _stateMatrix = glm::dmat3(1.0);
  
      GLuint _vao = 0;
      GLuint _vbo = 0;
  
      std::vector<CylinderVBOLayout> _vertices;
  };
  
  } // namespace openspace
  
  #endif // __OPENSPACE_MODULE_SPACECRAFTINSTRUMENTS___RENDERABLESHADOWCYLINDER___H__
  