packages/vtk/src/bbvtkImagePlanes.cxx

   1 /*
   2  # ---------------------------------------------------------------------
   3  #
   4  # Copyright (c) CREATIS (Centre de Recherche en Acquisition et Traitement de l'Image
   5  #                        pour la SantÈ)
   6  # Authors : Eduardo Davila, Frederic Cervenansky, Claire Mouton
   7  # Previous Authors : Laurent Guigues, Jean-Pierre Roux
   8  # CreaTools website : www.creatis.insa-lyon.fr/site/fr/creatools_accueil
   9  #
  10  #  This software is governed by the CeCILL-B license under French law and
  11  #  abiding by the rules of distribution of free software. You can  use,
  12  #  modify and/ or redistribute the software under the terms of the CeCILL-B
  13  #  license as circulated by CEA, CNRS and INRIA at the following URL
  14  #  http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html
  15  #  or in the file LICENSE.txt.
  16  #
  17  #  As a counterpart to the access to the source code and  rights to copy,
  18  #  modify and redistribute granted by the license, users are provided only
  19  #  with a limited warranty  and the software's author,  the holder of the
  20  #  economic rights,  and the successive licensors  have only  limited
  21  #  liability.
  22  #
  23  #  The fact that you are presently reading this means that you have had
  24  #  knowledge of the CeCILL-B license and that you accept its terms.
  25  # ------------------------------------------------------------------------ */
  26
  27
  28 /*=========================================================================
  29   Program:   bbtk
  30   Module:    $RCSfile: bbvtkImagePlanes.cxx,v $
  31   Language:  C++
  32   Date:      $Date: 2012/11/16 08:51:58 $
  33   Version:   $Revision: 1.38 $
  34 =========================================================================*/
  35
  36 /**
  37  *  \file
  38  *  \brief
  39  */
  40
  41 #ifdef _USE_VTK_
  42 #include "bbvtkImagePlanes.h"
  43 #include "bbvtkPackage.h"
  44 #include "vtkCellPicker.h"
  45 #include "vtkProperty.h"
  46 #include "vtkPolyData.h"
  47
  48
  49 #include "vtkMetaImageWriter.h"
  50 #include "vtkPNGWriter.h"
  51
  52 #include "bbstdCast.h"
  53 #include <vtkCommand.h>
  54
  55 #include "vtkImageData.h"
  56 //#include "vtkOutlineFilter.h"
  57 //#include "vtkPolyDataMapper.h"
  58 //#include "vtkActor.h"
  59 #include "vtkImagePlaneWidget.h"
  60 #include "vtkCellPicker.h"
  61 //#include "vtkProperty.h"
  62
  63 //#include "vtkRenderer.h"
  64 //#include "vtkCamera.h"
  65
  66 #include "vtkPlaneWidget.h"
  67
  68 #include <vtkImplicitPlaneWidget.h>
  69
  70 #include "bbstdRelay.h"
  71
  72 #include "vtkObjectFactory.h"
  73 #include "vtkImageFlip.h"
  74
  75 #include "vtkImageReslice.h"
  76 #include "vtkImageChangeInformation.h"
  77
  78 namespace bbstd
  79 {
  80
  81   //====================================================================
  82   BBTK_BLACK_BOX_TEMPLATE2_IMPLEMENTATION(Cast,
  83                                           bbtk::AtomicBlackBox);
  84   //====================================================================
  85   //====================================================================
  86 //  BBTK_BLACK_BOX_TEMPLATE_IMPLEMENTATION(Relay,
  87 //                                       bbtk::AtomicBlackBox);
  88   //====================================================================
  89
  90 }
  91 using namespace bbstd;
  92 /*
  93 namespace bbtk
  94 {
  95         typedef vtkImageData::Pointer vtkImageDataPointer;
  96   BBTK_DEFINE_HUMAN_READABLE_TYPE_NAME(vtkImageDataPointer,
  97                                        "vtkImageDataPointer");
  98 }
  99 */
 100 namespace bbvtk
 101 {
 102
 103   //====================================================================
 104   // Add the specialized adaptors to the package
 105   typedef vtkImagePlaneWidget* I;
 106   typedef vtkInteractorObserver* O;
 107
 108   BBTK_ADD_TEMPLATE2_BLACK_BOX_TO_PACKAGE(vtk,Cast,I,O);
 109
 110   BBTK_DEFINE_RELAY_BLACK_BOX(vtkImageDataPointer,vtk,vtkImageDataPointerRelay);
 111   BBTK_BLACK_BOX_IMPLEMENTATION(vtkImageDataPointerRelay,bbtk::AtomicBlackBox);
 112
 113   BBTK_ADD_BLACK_BOX_TO_PACKAGE(vtk,vtkImageDataPointerRelay);
 114  // BBTK_ADD_TEMPLATE_BLACK_BOX_TO_PACKAGE(vtk,Relay,vtkImageDataPointer);
 115   //Pointer);
 116
 117 }
 118
 119 namespace bbvtk
 120 {
 121
 122   //================================================================
 123  class ImagePlanes::VtkCallbackType : public vtkCommand
 124  {
 125  public:
 126    static VtkCallbackType *New()
 127    {
 128      return new VtkCallbackType;
 129    }
 130    //vtkTypeRevisionMacro(VtkCallbackType,vtkCommand);
 131
 132    virtual void Execute(vtkObject *caller, unsigned long, void*)
 133    {
 134        mBlackBox->Process();
 135        mBlackBox->bbSignalOutputModification();
 136    }
 137    void SetBlackBox(ImagePlanes *BB) { mBlackBox = BB;};
 138    //   void SetVtkPlaneWidget( vtkImagePlaneWidget *planeWidget );
 139    VtkCallbackType() {};
 140
 141  private:
 142    //   vtkPlaneWidget *planeWidget;
 143    ImagePlanes *mBlackBox;
 144  };
 145   //================================================================
 146
 147   //vtkCxxRevisionMacro(ImagePlanes::VtkCallbackType, "$Revision: 1.38 $");
 148
 149   //================================================================
 150
 151    BBTK_ADD_BLACK_BOX_TO_PACKAGE(vtk,ImagePlanes)
 152    BBTK_BLACK_BOX_IMPLEMENTATION(ImagePlanes,bbtk::AtomicBlackBox);
 153
 154    void ImagePlanes::bbUserSetDefaultValues()
 155    {
 156      bbSetOutputPlaneX(0);
 157      bbSetOutputPlaneY(0);
 158      bbSetOutputPlaneZ(0);
 159      bbSetOutputImageX(0);
 160      bbSetOutputImageY(0);
 161      bbSetOutputImageZ(0);
 162      bbSetInputIn(0);
 163      std::vector<double> vect;
 164      vect.push_back(0);
 165      vect.push_back(0);
 166      bbSetInputWindowLevel (vect);
 167      mVtkCallback = 0;
 168
 169      std::vector<int> vectpoints;
 170
 171      bbSetOutputPlane3Pts(0);
 172      bbSetOutputImage3Pts(0);
 173      bbSetInputPointsX(vectpoints);
 174      bbSetInputPointsY(vectpoints);
 175      bbSetInputPointsZ(vectpoints);
 176
 177      _imageReslicer = NULL;
 178      image          = NULL;
 179      _transform     = NULL;
 180      _matrix        = NULL;
 181
 182            bbSetInputInterpolation(1);
 183    }
 184
 185
 186    void ImagePlanes::bbUserInitializeProcessing()
 187    {
 188      /// CREATION DES WIDGETS
 189      if (bbGetOutputPlaneX() != 0) return;
 190
 191      // The shared picker enables us to use 3 planes at one time
 192      // and gets the picking order right
 193      vtkCellPicker* picker = vtkCellPicker::New();
 194      picker->SetTolerance(0.005);
 195
 196      // The 3 image plane widgets
 197      vtkImagePlaneWidget* planeWidgetX = GetPlaneWidget('x', 1, 0, 0, picker);
 198      vtkImagePlaneWidget* planeWidgetY = GetPlaneWidget('y', 1, 1, 0, picker);
 199      planeWidgetY->SetLookupTable(planeWidgetX->GetLookupTable());
 200
 201      vtkImagePlaneWidget* planeWidgetZ = GetPlaneWidget('z', 0, 0, 1, picker);
 202      planeWidgetZ->SetLookupTable(planeWidgetX->GetLookupTable());
 203
 204      vtkImagePlaneWidget* planeWidget3Pts = GetPlaneWidget('3', 0, 1, 1, picker);
 205      planeWidget3Pts->SetLookupTable(planeWidgetX->GetLookupTable());
 206
 207            // EED MPR view orientation correction..
 208      vtkImageFlip  *flipYFilter = vtkImageFlip::New();
 209      flipYFilter->SetFilteredAxis(1); // flip y axis
 210      flipYFilter->SetInput( planeWidgetX->GetResliceOutput() );
 211      flipYFilter->Update();
 212
 213            vtkImageChangeInformation *image = vtkImageChangeInformation::New();
 214            image->SetInput(  planeWidgetY->GetResliceOutput()  );
 215            image->SetOutputSpacing( 1,1,1 );
 216            image->CenterImageOn();
 217            image->Update();
 218            _imageTransform = vtkTransform::New();
 219            vtkImageReslice *slicer =vtkImageReslice::New();
 220            slicer->SetInput( image->GetOutput() );
 221            slicer->SetInformationInput( image->GetOutput() );
 222            slicer->SetResliceTransform( _imageTransform );
 223            slicer->SetOutputOrigin(0 , 0 , 0 );
 224            slicer->SetInterpolationModeToNearestNeighbor();
 225            slicer->Update();
 226            vtkImageChangeInformation *imageResult = vtkImageChangeInformation::New();
 227            imageResult->SetInput( slicer->GetOutput() );
 228            double spc[3];
 229             planeWidgetY->GetResliceOutput()->GetSpacing(spc);
 230            imageResult->SetOutputSpacing( spc[1], spc[0], spc[2] );
 231            imageResult->SetOutputOrigin( 0,0,0 );
 232
 233
 234      bbSetOutputPlaneX(planeWidgetX);
 235      bbSetOutputPlaneY(planeWidgetY);
 236      bbSetOutputPlaneZ(planeWidgetZ);
 237      bbSetOutputPlane3Pts(planeWidget3Pts);
 238      bbSetOutputImageX( flipYFilter->GetOutput() );             // EED MPR view orientation correction..
 239      bbSetOutputImageY( imageResult->GetOutput() );                     // EED MPR view orientation correction..
 240      bbSetOutputImageZ(planeWidgetZ->GetResliceOutput());
 241      bbSetInputInteractor(0);
 242      //bbSetOutputImage3Pts(planeWidget3Pts->GetResliceOutput());
 243
 244          if(picker != 0)
 245                 picker->UnRegister(NULL);
 246
 247      mVtkCallback = VtkCallbackType::New();
 248      mVtkCallback->SetBlackBox(this);
 249      planeWidgetX->AddObserver(vtkCommand::InteractionEvent,mVtkCallback);
 250      planeWidgetY->AddObserver(vtkCommand::InteractionEvent,mVtkCallback);
 251      planeWidgetZ->AddObserver(vtkCommand::InteractionEvent,mVtkCallback);
 252
 253    }
 254
 255 //---------------------------------------------------------------------
 256   void ImagePlanes::bbUserFinalizeProcessing()
 257   {
 258
 259     if (bbGetOutputPlaneX())
 260       {
 261
 262         /*
 263           bbGetOutputPlaneX()->RemoveObserver(mVtkCallback);
 264           bbGetOutputPlaneY()->RemoveObserver(mVtkCallback);
 265           bbGetOutputPlaneZ()->RemoveObserver(mVtkCallback);
 266
 267         bbGetOutputPlaneX()->Delete();
 268         bbGetOutputPlaneY()->Delete();
 269         bbGetOutputPlaneZ()->Delete();
 270         mVtkCallback->Delete();
 271         */
 272         //bbGetOutputPlaneX()->SetInput(NULL);
 273         //bbGetOutputPlaneY()->SetInput(NULL);
 274         //bbGetOutputPlaneZ()->SetInput(NULL);
 275
 276       }
 277   }
 278
 279 //---------------------------------------------------------------------
 280   void ImagePlanes::Process()
 281   {
 282
 283         if (bbGetInputIn()!=0)
 284         {
 285                 int dim[3];
 286                 int ext[6];
 287                 bbGetOutputPlaneX()->GetResliceOutput()->GetWholeExtent(ext);
 288                 dim[0] = ext[1]-ext[0]+1;
 289                 dim[1] = ext[3]-ext[2]+1;
 290                 dim[2] = ext[5]-ext[4]+1;
 291                 _imageTransform->Identity();
 292                 _imageTransform->PostMultiply();
 293                 _imageTransform->Translate( (int)(-(dim[0]/2)) , (int)(-(dim[1]/2)) ,0);
 294                 _imageTransform->RotateZ(90);
 295
 296
 297                 if ( image != bbGetInputIn()){//bbGetInputStatus("In") != bbtk::UPTODATE ){
 298                         // Input image has changed : reinitialize planes
 299                         image = bbGetInputIn();
 300
 301                         // Initial values : center of the volume (in real world, not in pixels!)
 302                         int xMin, xMax, yMin, yMax, zMin, zMax;
 303                         bbGetInputIn()->GetExtent(xMin, xMax, yMin, yMax, zMin, zMax);
 304                         double xSpacing, ySpacing, zSpacing;
 305                         bbGetInputIn()->GetSpacing(xSpacing, ySpacing, zSpacing);
 306
 307                         bbGetOutputPlaneX()->SetInput(bbGetInputIn());
 308                         bbGetOutputPlaneX()->SetPlaneOrientationToXAxes();
 309                         bbGetOutputPlaneX()->SetSlicePosition((xMax+xMin)/2.*xSpacing);
 310
 311                         //                 bbGetOutputPlaneX()->SetOrigin( 58*xSpacing , 80*ySpacing , 82*zSpacing );
 312                         //                 bbGetOutputPlaneX()->SetPoint1( 0*xSpacing, 146*ySpacing, 186*zSpacing);
 313                         //                 bbGetOutputPlaneX()->SetPoint2( 126*xSpacing, 146*ySpacing, 0*zSpacing);
 314
 315                         bbGetOutputPlaneY()->SetInput(bbGetInputIn());
 316                         bbGetOutputPlaneY()->SetPlaneOrientationToYAxes();
 317                         bbGetOutputPlaneY()->SetSlicePosition((yMax+yMin)/2.*ySpacing);
 318
 319                         bbGetOutputPlaneZ()->SetInput(bbGetInputIn());
 320                         bbGetOutputPlaneZ()->SetPlaneOrientationToZAxes();
 321                         bbGetOutputPlaneZ()->SetSlicePosition((zMax+zMin)/2.*zSpacing);
 322
 323                         if (bbGetInputWindowLevel()[0]!=0)
 324                         {
 325                                 bbGetOutputPlaneZ()->SetWindowLevel(bbGetInputWindowLevel()[0],
 326                                                                 bbGetInputWindowLevel()[1]);
 327                         } else {
 328                                 double *range = image->GetScalarRange();
 329                                 bbGetOutputPlaneZ()->SetWindowLevel(range[1]-range[0],
 330                                                                0.5*(range[1]+range[0]));
 331                         } // windowlevel
 332                         updateInteractor();
 333
 334                         dim[0] = xMax-xMin+1;
 335                         dim[1] = yMax-yMin+1;
 336                         dim[2] = zMax-zMin+1;
 337                         _imageTransform->Identity();
 338                         _imageTransform->PostMultiply();
 339                         _imageTransform->Translate( (int)(-(dim[0]/2)*(1/xSpacing)) , (int)(-(dim[2]/2)*(1/zSpacing)) ,0);
 340                         _imageTransform->RotateZ(90);
 341
 342            } // image
 343
 344                         // UPDATE DES SORTIES
 345                 bbGetOutputPlaneX()->SetResliceInterpolate( bbGetInputInterpolation() );
 346                 bbGetOutputPlaneY()->SetResliceInterpolate( bbGetInputInterpolation() );
 347                 bbGetOutputPlaneZ()->SetResliceInterpolate( bbGetInputInterpolation() );
 348
 349
 350                 bbGetOutputPlaneX()->GetResliceOutput()->Update();
 351                 bbGetOutputPlaneY()->GetResliceOutput()->Update();
 352                 bbGetOutputPlaneZ()->GetResliceOutput()->Update();
 353
 354                 std::vector<int> pointsx = bbGetInputPointsX();
 355                 std::vector<int> pointsy = bbGetInputPointsY();
 356                 std::vector<int> pointsz = bbGetInputPointsZ();
 357
 358                 //std::cout<<pointsx.size()<<pointsy.size()<<pointsz.size()<<std::endl;
 359
 360                 if (pointsx.size()==pointsy.size() && pointsx.size()==pointsz.size()&&pointsx.size()>=3)
 361                 {
 362
 363                         //Get the corresponding three points out of the vectors
 364                         double origin[3];
 365                         origin[0] = pointsx[0];
 366                         origin[1] = pointsy[0];
 367                         origin[2] = pointsz[0];
 368
 369                         double point1[3];
 370                         point1[0] = pointsx[1];
 371                         point1[1] = pointsy[1];
 372                         point1[2] = pointsz[1];
 373                         double point2[3];
 374                         point2[0]= pointsx[2];
 375                         point2[1]= pointsy[2];
 376                         point2[2]= pointsz[2];
 377
 378                         //With the three points we create the corresponding X, Y and Z vectors all orthogonal to each other
 379                         double* vect1= getNormal(makeVector(origin, point1));
 380                         double* vect2= getNormal(makeVector(origin, point2));
 381                         double* crossp = getCrossProduct(vect1, vect2);
 382
 383                         double *newx = getCrossProduct(vect2, crossp);
 384
 385                         int ext[6],factor=0;
 386                         bbGetInputIn()->GetExtent(ext);
 387
 388                         factor = ext[0]<ext[3]? ext[3] : ext[0];
 389                         factor = factor<ext[5]? ext[5] : factor;
 390
 391         //for the plane widgets
 392                         vtkImagePlaneWidget* plane3pts = (vtkImagePlaneWidget*)bbGetOutputPlane3Pts();
 393                         plane3pts->SetInput(bbGetInputIn());
 394                         double xSpacing, ySpacing, zSpacing;
 395                         bbGetInputIn()->GetSpacing(xSpacing, ySpacing, zSpacing);
 396                         plane3pts->SetOrigin(pointsx[0]*xSpacing,pointsy[0]*ySpacing,pointsz[0]*zSpacing);
 397                         plane3pts->SetPoint1((origin[0]+newx[0]*factor)*xSpacing,
 398                                                                         (origin[1]+newx[1]*factor)*ySpacing,
 399                                                                         (origin[2]+newx[2]*factor)*zSpacing);
 400                         plane3pts->SetPoint2((origin[0]+vect2[0]*factor)*xSpacing,
 401                                                                         (origin[1]+vect2[1]*factor)*ySpacing,
 402                                                                         (origin[2]+vect2[2]*factor)*zSpacing);
 403                         plane3pts->GetResliceOutput()->Update();
 404 //To get the slice of image out of the selected volume
 405                         if (_imageReslicer==NULL){
 406                                 _imageReslicer = vtkImageReslice::New();
 407                                 _imageReslicer->SetOutputDimensionality(2);
 408                                 _transform = vtkTransform::New();
 409                                 _matrix = vtkMatrix4x4::New();
 410                         }
 411                         _imageReslicer->SetInterpolationMode( bbGetInputInterpolation() );
 412                         _imageReslicer->SetInput( bbGetInputIn() );
 413                         _imageReslicer->SetInformationInput(bbGetInputIn());
 414                         //fill out the information with the created vectors and using the spacing of the image
 415                         _imageReslicer->SetResliceAxesDirectionCosines(newx[0]*xSpacing,newx[1]*xSpacing,newx[2]*xSpacing,
 416                                                                         vect2[0]*ySpacing,vect2[1]*ySpacing,vect2[2]*ySpacing,
 417                                                                         crossp[0]*zSpacing,crossp[1]*zSpacing,crossp[2]*zSpacing);
 418                         _imageReslicer->SetResliceAxesOrigin(origin[0]*xSpacing,origin[1]*ySpacing,origin[2]*zSpacing);
 419                         _imageReslicer->GetOutput()->Update();
 420                         _imageReslicer->GetOutput()->UpdateInformation();
 421
 422                         bbSetOutputImage3Pts(_imageReslicer->GetOutput());
 423
 424                         _matrix->Identity();
 425
 426                         _matrix->SetElement(0,0,newx[0]*xSpacing);
 427                         _matrix->SetElement(1,0,newx[1]*xSpacing);
 428                         _matrix->SetElement(2,0,newx[2]*xSpacing);
 429                         _matrix->SetElement(0,1,vect2[0]*ySpacing);
 430                         _matrix->SetElement(1,1,vect2[1]*ySpacing);
 431                         _matrix->SetElement(2,1,vect2[2]*ySpacing);
 432                         _matrix->SetElement(0,2,crossp[0]*zSpacing);
 433                         _matrix->SetElement(1,2,crossp[1]*zSpacing);
 434                         _matrix->SetElement(2,2,crossp[2]*zSpacing);
 435                         _matrix->SetElement(0,3,origin[0]*xSpacing);
 436                         _matrix->SetElement(1,3,origin[1]*ySpacing);
 437                         _matrix->SetElement(2,3,origin[2]*zSpacing);
 438
 439                         _transform->SetMatrix(_matrix);
 440
 441                         //set the transformation out to be used by other bbBoxes
 442                         bbSetOutputTransform3Pts((vtkLinearTransform*)_transform);
 443                 }       // pointsx pointsy  pointsz
 444         } // bbGetInputIn
 445   }
 446
 447   void ImagePlanes::updateInteractor(){
 448
 449         vtkRenderWindowInteractor* interactor = bbGetInputInteractor();
 450
 451         if(interactor){
 452                 bbGetOutputPlaneX()->SetInteractor(interactor);
 453                 bbGetOutputPlaneX()->EnabledOn();
 454                 bbGetOutputPlaneY()->SetInteractor(interactor);
 455                 bbGetOutputPlaneY()->EnabledOn();
 456                 bbGetOutputPlaneZ()->SetInteractor(interactor);
 457                 bbGetOutputPlaneZ()->EnabledOn();
 458                 bbGetOutputPlane3Pts()->SetInteractor(interactor);
 459                 bbGetOutputPlane3Pts()->EnabledOn();
 460         }
 461   }
 462         //-----------------------------------------------------------------
 463   void vtkImageDataPointerRelay::bbUserSetDefaultValues()
 464         {
 465
 466         }
 467
 468         //-----------------------------------------------------------------
 469   void vtkImageDataPointerRelay::bbUserInitializeProcessing()
 470         {
 471         }
 472
 473         //-----------------------------------------------------------------
 474   void vtkImageDataPointerRelay::bbUserFinalizeProcessing()
 475         {
 476         }
 477
 478   vtkImagePlaneWidget* ImagePlanes::GetPlaneWidget(unsigned char activationkey, double r, double g, double b, vtkCellPicker* picker)
 479   {
 480                 vtkProperty* prop1 = 0;
 481                 vtkImagePlaneWidget* planeWidget = 0;
 482
 483                 planeWidget = vtkImagePlaneWidget::New();
 484                 planeWidget->DisplayTextOn();
 485                 planeWidget->SetPicker(picker);
 486                 planeWidget->SetKeyPressActivationValue(activationkey);
 487                 prop1 = planeWidget->GetPlaneProperty();
 488                 prop1->SetColor(r, g, b);
 489
 490                 return planeWidget;
 491   }
 492
 493   double* ImagePlanes::getCrossProduct(double* vect0,double* vect1){
 494         double* vectCross;
 495         vectCross = new double[3];
 496         vectCross[0] = vect0[1]*vect1[2]-(vect0[2]*vect1[1]);
 497         vectCross[1] = -(vect0[0]*vect1[2]-(vect0[2]*vect1[0]));
 498         vectCross[2] = vect0[0]*vect1[1]-(vect0[1]*vect1[0]);
 499
 500         return vectCross;
 501   }
 502 /**
 503 **      Returns the magnitud of the given vector
 504 **/
 505   double ImagePlanes::getMagnitud(double* vect){
 506
 507         double mag;
 508         mag = sqrt(pow(vect[0],2) + pow(vect[1],2) + pow(vect[2],2));
 509         //std::cout<<"mag "<<mag <<std::endl;
 510         return mag;
 511   }
 512 /**
 513 **      returns the unitary vector of the given vector
 514 **      u = 1/|vect| . vect
 515 **/
 516   double* ImagePlanes::getNormal(double* vect){
 517
 518         double* vectnorm;
 519         double mag = getMagnitud(vect);
 520
 521         vectnorm = new double[3];
 522
 523         if(mag!=0){
 524                 vectnorm[0] = vect[0]/mag;
 525                 vectnorm[1] = vect[1]/mag;
 526                 vectnorm[2] = vect[2]/mag;
 527         }else{
 528                 vectnorm[0] = 0;
 529                 vectnorm[1] = 0;
 530                 vectnorm[2] = 0;
 531         }
 532
 533         return vectnorm;
 534   }
 535
 536   double* ImagePlanes::makeVector(double podouble0[3], double podouble1[3]){
 537         double *vect;
 538         vect = new double[3];
 539
 540         vect[0]= podouble1[0]-podouble0[0];
 541         vect[1]= podouble1[1]-podouble0[1];
 542         vect[2]= podouble1[2]-podouble0[2];
 543
 544         return vect;
 545   }
 546
 547 }//namespace bbtk
 548
 549 #endif // _USE_VTK_