OgreMaterialSwitcher.hh

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/*
 * Copyright (C) 2018 Open Source Robotics Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
*/

#ifndef IGNITION_RENDERING_OGRE_OGREMATERIALSWITCHER_HH_
#define IGNITION_RENDERING_OGRE_OGREMATERIALSWITCHER_HH_

#include <map>
#include <string>

#include <ignition/math/Color.hh>
#include "ignition/rendering/config.hh"
#include "ignition/rendering/ogre/Export.hh"
#include "ignition/rendering/ogre/OgreIncludes.hh"
#include "ignition/rendering/ogre/OgreRenderTypes.hh"

namespace ignition
{
  namespace rendering
  {
    inline namespace IGNITION_RENDERING_VERSION_NAMESPACE {
    //
    // forward declarations
    class OgreSelectionBuffer;

    class IGNITION_RENDERING_OGRE_VISIBLE OgreMaterialSwitcher :
      public Ogre::MaterialManager::Listener, Ogre::RenderTargetListener
    {
      public: OgreMaterialSwitcher();

      public: ~OgreMaterialSwitcher();

      public: std::string EntityName(
              const ignition::math::Color &_color) const;

      public: void Reset();

      public: virtual Ogre::Technique *handleSchemeNotFound(
                  uint16_t _schemeIndex, const Ogre::String &_schemeName,
                  Ogre::Material *_originalMaterial, uint16_t _lodIndex,
                  const Ogre::Renderable *_rend);

      public: virtual void preRenderTargetUpdate(
                  const Ogre::RenderTargetEvent &_evt);

      public: virtual void postRenderTargetUpdate(
                  const Ogre::RenderTargetEvent &_evt);

      private: ignition::math::Color currentColor;

      private: std::string lastEntity;

      private: Ogre::Technique *lastTechnique = nullptr;

      private: std::map<unsigned int, std::string> colorDict;

      private: void NextColor();

      public: friend class OgreSelectionBuffer;

      private: Ogre::Technique *plainTechnique = nullptr;

      private: Ogre::Technique *overlayTechnique = nullptr;
    };
    }
  }
}
#endif