[vtk-developers] Overlay many vtkpolydata on dicom image

[bamb]

Hi ! 
I am a begginner user of VTK librairies.
I am making a application which need to display 
many contours, which overlay on DICOM slice.

I tried to use vtkContourWidget , but I can display one contour at a time (
EDITMODE comment)
If somebody knows how or has an example which could help me out.
It would be very nice. 


My problem is after ViewMode comment 

Here is my code ( for one contour a time) : 

bool found=false;
		
		//Make precedent actor invisible
		Activity::GetActivity().MakeActorNotVisible(this->mSliceCurrentIndex);

		Activity::GetActivity().MakeActorVisible(position);
		
		//keeps new actor index
		this->mSliceCurrentIndex = position;

	if(
EDITMODE==this->mode){/************************************EDITMODE*******************/
			//Find out associated contour

			int indexContour = this->GetContourMatchingImage(position);

		
			//If contour was found, then initialize Contour Widget with it	
			if( indexContour >= 0)
			{					
				//Set Representation
			
this->GetContourWidget(0)->SetRepresentation(this->mAllContoursRepresentations.at(this->idContourSetViewActivated)
					.at(indexContour).second.GetRepresentation());
				
				//1 for "define" state , 2 for "manipulate" state	
				this->GetContourWidget(0)->SetWidgetState(2);
				//And put interactor on.
				this->GetContourWidget(0)->On();		
			}
			/*Otherwise instanciate a new Representation of the contour , initialize
Contour Widget
			and save this representation in a vector ( member)*/
			else 
			{
				//Instanciate a new representation
				Contour contour(1,0,1);
				//save it in the vector
			
this->mAllContoursRepresentations.at(this->idContourSetViewActivated).push_back(std::pair<unsigned
int , Contour> (position,contour));	

				/*Prepare ContourWidget By setting representation 
				and Poutine  ^^ interactor on*/
			
this->GetContourWidget(0)->SetRepresentation(contour.GetRepresentation());
				this->GetContourWidget(0)->On();
				this->GetContourWidget(0)->Initialize();	
			}	
	}
	else
if(VIEWMODE==this->mode){/************************************VIEWMODE*****************************************/
						
		std::vector<int> contourPosition;
		for(int i =0; i < CONTOUR_SET_MAX; i++){
			this->SetActivatedViewContourSetId(i);
			contourPosition.push_back(this->GetContourMatchingImage(position));			
		}		
		
		for(int i =0; i < contourPosition.size(); i++){
			//If contour was found, then initialize Contour Widget with it	
			if( contourPosition.at(i) >= 0)
			{
				//Set this
			
this->GetContourWidget(i)->SetRepresentation(this->mAllContoursRepresentations.at(i)
					.at(contourPosition.at(i)).second.GetRepresentation());
				this->GetContourWidget(i)->SetWidgetState(2);
				//And put interactor on.
				this->GetContourWidget(i)->On();		
			}
		}
	}	
		
	/**********************Render*******************************/	
	this->Render();



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