RTShaderSystem.hh

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/*
 * Copyright (C) 2012 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 _GAZEBO_RTSHADERSYSTEM_HH_
#define _GAZEBO_RTSHADERSYSTEM_HH_

#include <list>
#include <string>

#include "gazebo/rendering/ogre_gazebo.h"
#include "gazebo/gazebo_config.h"

#include "gazebo/rendering/Camera.hh"
#include "gazebo/common/SingletonT.hh"
#include "gazebo/util/system.hh"

namespace gazebo
{
  namespace rendering
  {
    class RTShaderSystemPrivate;


    class GZ_RENDERING_VISIBLE RTShaderSystem :
      public SingletonT<RTShaderSystem>
    {
      public: enum LightingModel
              {
                SSLM_PerVertexLighting,
                SSLM_PerPixelLighting,
                SSLM_NormalMapLightingTangentSpace,
                SSLM_NormalMapLightingObjectSpace
              };

      private: RTShaderSystem();

      private: virtual ~RTShaderSystem();

      public: void Init();

      public: void Fini();

      public: void AddScene(ScenePtr _scene);

      public: void RemoveScene(ScenePtr _scene);

      public: void RemoveScene(const std::string &_scene);

      public: void UpdateShaders();

      public: static void AttachViewport(Ogre::Viewport *_viewport,
                                         ScenePtr _scene);

      public: static void DetachViewport(Ogre::Viewport *_viewport,
                                         ScenePtr _scene);

      public: void SetPerPixelLighting(bool _set);

      public: void GenerateShaders(const VisualPtr &_vis);

      public: void ApplyShadows(ScenePtr _scene);

      public: void RemoveShadows(ScenePtr _scene);

      public: Ogre::PSSMShadowCameraSetup *GetPSSMShadowCameraSetup() const;

      public: void Update();

      public: bool SetShadowTextureSize(const unsigned int _size);

      public: unsigned int ShadowTextureSize() const;

      public: void SetShadowClipDist(const double _near, const double _far);

      public: double ShadowNearClip() const;

      public: double ShadowFarClip() const;

      public: void SetShadowSplitLambda(const double _lambda);

      public: double ShadowSplitLambda() const;

      public: void SetShadowSplitPadding(const double _padding);

      public: double ShadowSplitPadding() const;

      private: bool GetPaths(std::string &_coreLibsPath,
                             std::string &_cachePath);

      private: void UpdateShaders(VisualPtr _vis);

      private: void ReapplyShadows();

      private: friend class SingletonT<RTShaderSystem>;

      private: RTShaderSystemPrivate *dataPtr;
    };
  }
}
#endif