DtPlanarReflectionCamera.h

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/******************************************************************************
** Copyright (c) 2023 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/


#pragma once

#include <vrvTriton/DtTritonConfig.h>

#include <vrvUtil/DtSignalConnectionManager.h>

#include <osg/Camera>
#include <osg/ClipNode>
#include <osg/Texture2D>

namespace makVrv
{
   class DtDe;
   class DtOsgCullVisitor;

   class DtPlanarReflectionCamera : public osg::Camera
   {
   public:
      DtPlanarReflectionCamera(osg::Camera* mainCamera, DtDe& de);

   protected:
      virtual ~DtPlanarReflectionCamera();

   public:
      virtual osg::Texture* reflectionTexture();

      virtual const osg::Texture* reflectionTexture() const;

      virtual osg::RefMatrix * textureProjectionMatrix();

      virtual const osg::RefMatrix* textureProjectionMatrix() const;

      virtual void accept(osg::NodeVisitor& nv);

      virtual void enable(bool enabled);

      virtual void releaseGLObjects(osg::State* state = 0) const;

      virtual void setClipPlane(const osg::Vec4d& v);

      virtual bool isRenderToTextureValid();

      virtual void setMirrorMatrix(const osg::Matrix& mirror);

      virtual void updateFogColor(bool skyEnabled, const osg::Vec4f& envFogColor);

      virtual const osg::observer_ptr<osg::Camera>& sceneCameraObserver(void) const;

   protected:

      virtual void lodScaleChanged(float lodScale);

      virtual osg::Matrixd modifyProjectionMatrix(const osg::Matrix& sceneProjection, const osg::Vec4d& clipPlane) const;

      virtual void setupColorBufferTexture(int format, int sourceFormat, int sourceType);

      virtual osg::Texture* allocateRenderTexture(int width, int height);

      virtual void updateReflectionTexture();

   protected:

      DtDe& myDe;
      DtSignalConnectionManager myConnections;

      osg::ref_ptr< osg::Texture > myTexture;
      osg::ref_ptr< osg::Texture > myDepthTexture;
      osg::ref_ptr< osg::RefMatrix > myTextureProjectionMatrix;
      osg::observer_ptr< osg::Camera > mySceneCameraObserver;

      osg::Matrix myMirrorMatrix;

      int myTexFormat;
      int mySourceFormat;
      int mySourceType;

      int myWidth;
      int myHeight;

      osg::Vec4d myClipPlane;

      const unsigned int myNodeMask;
   };
}