#include "vtkJoiner.h"

vtkJoiner::vtkJoiner(){
}

vtkJoiner::~vtkJoiner(){
}


vtkImageData* vtkJoiner::join(vtkImageData *a, vtkImageData *b){
	
	int extent[6];
	vtkImageData *c = vtkImageData::New();
	c->DeepCopy(a);
	
	unsigned char *ptrA = NULL;
	unsigned char *ptrB = NULL;
	unsigned char *ptrC = NULL;

	a->GetExtent(extent);
	int i, j, k;
	for(i=extent[0];i<=extent[1];i++){
		for(j=extent[2];j<=extent[3];j++){
			for(k=extent[4];k<=extent[5];k++){
				ptrA = (unsigned char *) a->GetScalarPointer(i,j,k);
				ptrB = (unsigned char *) b->GetScalarPointer(i,j,k);
				ptrC = (unsigned char *) c->GetScalarPointer(i,j,k);
				if ((*ptrA != 0) || (*ptrB != 0)){
					*ptrC=255;
				}
				else{
					*ptrC = 0;
				}
			}
		}
	}

	return c;
}