DtOsgDecalRibbon.h

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/******************************************************************************
** Copyright (c) 2008 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/
/******************************************************************************
** $RCSfile: DtOsgDecalRibbon.h,v $ $Revision: 1.13 $ $State: Exp $
******************************************************************************/


#pragma once

#include <vrvOsg/DtOsgRibbon.h>

namespace osg 
{ 
   class DrawElementsUInt; 
   class Texture;
}

namespace makVrv
{
   class DT_DLL_VRVOSG DtOsgDecalRibbon
      : public DtOsgRibbon
   {
   public:
      DtOsgDecalRibbon(DtDe& de, float segmentSpacing,
         const osg::Vec4& color, osg::Texture* tex, float maxLength = 2000);

      virtual void setTextureRepeat(float textureRepeat);

   protected:
      virtual ~DtOsgDecalRibbon();

      virtual void addParticle(const osg::Vec3d & left, const osg::Vec3d & right,
         double simTime);

      virtual float currentSegmentLength();

      virtual void extendCurrentSegment(osg::Vec3d const& left, 
         osg::Vec3d const& right, double simTime);

      virtual osg::Drawable* getDrawable();

      virtual int particleIndexAtOffset(int offset);

      virtual void rotateDrawableIndices(int amount);

      virtual osg::Vec2 getTextureCoordinateFor(int pointIndex, float vScale);

      virtual osg::Geode* createGeode();

   private:
      osg::ref_ptr<osg::Vec3Array> myPoints;
      osg::ref_ptr<osg::Vec2Array> myTextureCoordinates;
      osg::ref_ptr<osg::DrawElementsUInt> myRibbon;
      osg::ref_ptr<osg::Geometry> myGeometry;
      osg::ref_ptr<osg::Texture> myTexture;

      bool myWrappingVertices;
      std::string myTextureFilename;
      int myParticleIndex;
      float myTextureRepeat;
   };
}