Change color on 3D geometry

[Anonymous]

Hi

I need change color on 3D geometry. I read this file by BStreamFileToolkit and i have inicialize TKE_Color_RGB handler, then in class TKColorRGBHandler i change color by SetRGB() method and i run write method. But write method return TK_Status = TK_Error. I thing, that i can not use write method directly in TKColorRGBHandler, but i need inicialize W3DStreamWriter but i don't know how. Please do you have some example for change of 3D geometry properties? 

Thank you very much Milan

Here is my piece of code:

class TKColorRGBHandler : public TK_Color_RGB {
public:
 TKColorRGBHandler() : TK_Color_RGB() {;}
 virtual ~TKColorRGBHandler() {;}
 
 TK_Status Execute( BStreamFileToolkit& rW3DParser ) {
  TK_Status eStatus = TK_Color_RGB::Execute( rW3DParser );
  if (eStatus == TK_Normal) {
   if(this->GetGeometry() == TKO_Geo_Face) {
    this->SetRGB(0.85f, 0.0f, 0.0f);
    eStatus = this->Write(rW3DParser);  //return TK_Error
   }
  }
  return eStatus;
 }
};

void change GeometryColor(DFWSection* pSection) {
  pSection->readDescriptor();
  // get the graphics stream
  DWFToolkit::DWFResourceContainer::ResourceIterator* piResources = pSection->findResourcesByRole( DWFXML::kzRole_Graphics3d );
  if ((piResources == NULL) || (piResources->valid() == false)) {
    if (piResources) {
      DWFCORE_FREE_OBJECT( piResources );
    }
    printf("Illegal EModel section - no graphics");
  }
  DWFToolkit::DWFGraphicResource* pW3D = dynamic_cast<DWFGraphicResource*>(piResources->get());
  DWFCORE_FREE_OBJECT( piResources );

  // get the data stream
  DWFCore::DWFInputStream* pW3DStream = pW3D->getInputStream(); 

  BStreamFileToolkit oW3DStreamParser;
  oW3DStreamParser.SetOpcodeHandler( TKE_Color_RGB, new TKColorRGBHandler );
  
  oW3DStreamParser.OpenStream( *pW3DStream );
  size_t  nBytesRead = 0;
  char    aBuffer[16384] = {0};

  while (pW3DStream->available() > 0) {
    nBytesRead = pW3DStream->read( aBuffer, 16384 );
    // use the parser to process the buffer
    if (oW3DStreamParser.ParseBuffer(aBuffer, nBytesRead, TK_Normal) == TK_Error) {
      printf("Error occured parsing buffer");
      break;
    }
  }
  oW3DStreamParser.CloseStream();
  DWFCORE_FREE_OBJECT( pW3DStream );
}