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(NULL);
 157      bbSetOutputPlaneY(NULL);
 158      bbSetOutputPlaneZ(NULL);
 159      bbSetOutputImageX(NULL);
 160      bbSetOutputImageY(NULL);
 161      bbSetOutputImageZ(NULL);
 162      bbSetInputIn(NULL);
 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      {
 246                 picker->UnRegister(NULL);
 247          }
 248
 249      mVtkCallback = VtkCallbackType::New();
 250      mVtkCallback->SetBlackBox(this);
 251      planeWidgetX->AddObserver(vtkCommand::InteractionEvent,mVtkCallback);
 252      planeWidgetY->AddObserver(vtkCommand::InteractionEvent,mVtkCallback);
 253      planeWidgetZ->AddObserver(vtkCommand::InteractionEvent,mVtkCallback);
 254
 255    }
 256
 257 //---------------------------------------------------------------------
 258   void ImagePlanes::bbUserFinalizeProcessing()
 259   {
 260
 261     if (bbGetOutputPlaneX())
 262       {
 263
 264         /*
 265           bbGetOutputPlaneX()->RemoveObserver(mVtkCallback);
 266           bbGetOutputPlaneY()->RemoveObserver(mVtkCallback);
 267           bbGetOutputPlaneZ()->RemoveObserver(mVtkCallback);
 268
 269         bbGetOutputPlaneX()->Delete();
 270         bbGetOutputPlaneY()->Delete();
 271         bbGetOutputPlaneZ()->Delete();
 272         mVtkCallback->Delete();
 273         */
 274         //bbGetOutputPlaneX()->SetInput(NULL);
 275         //bbGetOutputPlaneY()->SetInput(NULL);
 276         //bbGetOutputPlaneZ()->SetInput(NULL);
 277
 278       }
 279   }
 280
 281 //---------------------------------------------------------------------
 282   void ImagePlanes::Process()
 283   {
 284
 285         if (bbGetInputIn()!=0)
 286         {
 287                 int dim[3];
 288                 int ext[6];
 289                 bbGetOutputPlaneX()->GetResliceOutput()->GetWholeExtent(ext);
 290                 dim[0] = ext[1]-ext[0]+1;
 291                 dim[1] = ext[3]-ext[2]+1;
 292                 dim[2] = ext[5]-ext[4]+1;
 293                 _imageTransform->Identity();
 294                 _imageTransform->PostMultiply();
 295                 _imageTransform->Translate( (int)(-(dim[0]/2)) , (int)(-(dim[1]/2)) ,0);
 296                 _imageTransform->RotateZ(90);
 297
 298
 299                 if ( image != bbGetInputIn()){//bbGetInputStatus("In") != bbtk::UPTODATE ){
 300                         // Input image has changed : reinitialize planes
 301                         image = bbGetInputIn();
 302
 303                         // Initial values : center of the volume (in real world, not in pixels!)
 304                         int xMin, xMax, yMin, yMax, zMin, zMax;
 305                         bbGetInputIn()->GetExtent(xMin, xMax, yMin, yMax, zMin, zMax);
 306                         double xSpacing, ySpacing, zSpacing;
 307                         bbGetInputIn()->GetSpacing(xSpacing, ySpacing, zSpacing);
 308
 309                         bbGetOutputPlaneX()->SetInput(bbGetInputIn());
 310                         bbGetOutputPlaneX()->SetPlaneOrientationToXAxes();
 311                         bbGetOutputPlaneX()->SetSlicePosition((xMax+xMin)/2.*xSpacing);
 312
 313                         //                 bbGetOutputPlaneX()->SetOrigin( 58*xSpacing , 80*ySpacing , 82*zSpacing );
 314                         //                 bbGetOutputPlaneX()->SetPoint1( 0*xSpacing, 146*ySpacing, 186*zSpacing);
 315                         //                 bbGetOutputPlaneX()->SetPoint2( 126*xSpacing, 146*ySpacing, 0*zSpacing);
 316
 317                         bbGetOutputPlaneY()->SetInput(bbGetInputIn());
 318                         bbGetOutputPlaneY()->SetPlaneOrientationToYAxes();
 319                         bbGetOutputPlaneY()->SetSlicePosition((yMax+yMin)/2.*ySpacing);
 320
 321                         bbGetOutputPlaneZ()->SetInput(bbGetInputIn());
 322                         bbGetOutputPlaneZ()->SetPlaneOrientationToZAxes();
 323                         bbGetOutputPlaneZ()->SetSlicePosition((zMax+zMin)/2.*zSpacing);
 324
 325                         if (bbGetInputWindowLevel()[0]!=0)
 326                         {
 327                                 bbGetOutputPlaneZ()->SetWindowLevel(bbGetInputWindowLevel()[0],
 328                                                                 bbGetInputWindowLevel()[1]);
 329                         } else {
 330                                 double *range = image->GetScalarRange();
 331                                 bbGetOutputPlaneZ()->SetWindowLevel(range[1]-range[0],
 332                                                                0.5*(range[1]+range[0]));
 333                         } // windowlevel
 334                         updateInteractor();
 335
 336                         dim[0] = xMax-xMin+1;
 337                         dim[1] = yMax-yMin+1;
 338                         dim[2] = zMax-zMin+1;
 339                         _imageTransform->Identity();
 340                         _imageTransform->PostMultiply();
 341                         _imageTransform->Translate( (int)(-(dim[0]/2)*(1/xSpacing)) , (int)(-(dim[2]/2)*(1/zSpacing)) ,0);
 342                         _imageTransform->RotateZ(90);
 343
 344            } // image
 345
 346                         // UPDATE DES SORTIES
 347                 bbGetOutputPlaneX()->SetResliceInterpolate( bbGetInputInterpolation() );
 348                 bbGetOutputPlaneY()->SetResliceInterpolate( bbGetInputInterpolation() );
 349                 bbGetOutputPlaneZ()->SetResliceInterpolate( bbGetInputInterpolation() );
 350
 351
 352                 bbGetOutputPlaneX()->GetResliceOutput()->Update();
 353                 bbGetOutputPlaneY()->GetResliceOutput()->Update();
 354                 bbGetOutputPlaneZ()->GetResliceOutput()->Update();
 355
 356                 std::vector<int> pointsx = bbGetInputPointsX();
 357                 std::vector<int> pointsy = bbGetInputPointsY();
 358                 std::vector<int> pointsz = bbGetInputPointsZ();
 359
 360                 //std::cout<<pointsx.size()<<pointsy.size()<<pointsz.size()<<std::endl;
 361
 362                 if (pointsx.size()==pointsy.size() && pointsx.size()==pointsz.size()&&pointsx.size()>=3)
 363                 {
 364
 365                         //Get the corresponding three points out of the vectors
 366                         double origin[3];
 367                         origin[0]                       = pointsx[0];
 368                         origin[1]                       = pointsy[0];
 369                         origin[2]                       = pointsz[0];
 370
 371                         double point1[3];
 372                         point1[0]                       = pointsx[1];
 373                         point1[1]                       = pointsy[1];
 374                         point1[2]                       = pointsz[1];
 375                         double point2[3];
 376                         point2[0]                       = pointsx[2];
 377                         point2[1]                       = pointsy[2];
 378                         point2[2]                       = pointsz[2];
 379
 380                         //With the three points we create the corresponding X, Y and Z vectors all orthogonal to each other
 381                         double* vect1           = getNormal(makeVector(origin, point1));
 382                         double* vect2           = getNormal(makeVector(origin, point2));
 383                         double* crossp          = getCrossProduct(vect1, vect2);
 384
 385                         double *newx            = getCrossProduct(vect2, crossp);
 386
 387                         int ext[6],factor       =       0;
 388                         bbGetInputIn()->GetExtent(ext);
 389
 390                         factor = ext[0]<ext[3]? ext[3] : ext[0];
 391                         factor = factor<ext[5]? ext[5] : factor;
 392
 393         //for the plane widgets
 394                         vtkImagePlaneWidget* plane3pts = (vtkImagePlaneWidget*)bbGetOutputPlane3Pts();
 395                         plane3pts->SetInput(bbGetInputIn());
 396                         double xSpacing, ySpacing, zSpacing;
 397                         bbGetInputIn()->GetSpacing(xSpacing, ySpacing, zSpacing);
 398                         plane3pts->SetOrigin(pointsx[0]*xSpacing,pointsy[0]*ySpacing,pointsz[0]*zSpacing);
 399                         plane3pts->SetPoint1((origin[0]+newx[0]*factor)*xSpacing,
 400                                                                         (origin[1]+newx[1]*factor)*ySpacing,
 401                                                                         (origin[2]+newx[2]*factor)*zSpacing);
 402                         plane3pts->SetPoint2((origin[0]+vect2[0]*factor)*xSpacing,
 403                                                                         (origin[1]+vect2[1]*factor)*ySpacing,
 404                                                                         (origin[2]+vect2[2]*factor)*zSpacing);
 405                         plane3pts->GetResliceOutput()->Update();
 406 //To get the slice of image out of the selected volume
 407                         if (_imageReslicer==NULL)
 408                         {
 409                                 _imageReslicer = vtkImageReslice::New();
 410                                 _imageReslicer->SetOutputDimensionality(2);
 411                                 _transform = vtkTransform::New();
 412                                 _matrix = vtkMatrix4x4::New();
 413                         } // if
 414                         _imageReslicer->SetInterpolationMode( bbGetInputInterpolation() );
 415                         _imageReslicer->SetInput( bbGetInputIn() );
 416                         _imageReslicer->SetInformationInput(bbGetInputIn());
 417                         //fill out the information with the created vectors and using the spacing of the image
 418                         _imageReslicer->SetResliceAxesDirectionCosines(newx[0]*xSpacing,newx[1]*xSpacing,newx[2]*xSpacing,
 419                                                                         vect2[0]*ySpacing,vect2[1]*ySpacing,vect2[2]*ySpacing,
 420                                                                         crossp[0]*zSpacing,crossp[1]*zSpacing,crossp[2]*zSpacing);
 421                         _imageReslicer->SetResliceAxesOrigin(origin[0]*xSpacing,origin[1]*ySpacing,origin[2]*zSpacing);
 422                         _imageReslicer->GetOutput()->Update();
 423                         _imageReslicer->GetOutput()->UpdateInformation();
 424
 425                         bbSetOutputImage3Pts(_imageReslicer->GetOutput());
 426
 427                         _matrix->Identity();
 428
 429                         _matrix->SetElement(0,0,newx[0]*xSpacing);
 430                         _matrix->SetElement(1,0,newx[1]*xSpacing);
 431                         _matrix->SetElement(2,0,newx[2]*xSpacing);
 432                         _matrix->SetElement(0,1,vect2[0]*ySpacing);
 433                         _matrix->SetElement(1,1,vect2[1]*ySpacing);
 434                         _matrix->SetElement(2,1,vect2[2]*ySpacing);
 435                         _matrix->SetElement(0,2,crossp[0]*zSpacing);
 436                         _matrix->SetElement(1,2,crossp[1]*zSpacing);
 437                         _matrix->SetElement(2,2,crossp[2]*zSpacing);
 438                         _matrix->SetElement(0,3,origin[0]*xSpacing);
 439                         _matrix->SetElement(1,3,origin[1]*ySpacing);
 440                         _matrix->SetElement(2,3,origin[2]*zSpacing);
 441
 442                         _transform->SetMatrix(_matrix);
 443
 444                         //set the transformation out to be used by other bbBoxes
 445                         bbSetOutputTransform3Pts((vtkLinearTransform*)_transform);
 446                 }       // pointsx pointsy  pointsz
 447         } // bbGetInputIn
 448   }
 449
 450         void ImagePlanes::updateInteractor()
 451         {
 452                 vtkRenderWindowInteractor* interactor = bbGetInputInteractor();
 453                 if(interactor)
 454                 {
 455                         bbGetOutputPlaneX()->SetInteractor(interactor);
 456                         bbGetOutputPlaneX()->EnabledOn();
 457                         bbGetOutputPlaneY()->SetInteractor(interactor);
 458                         bbGetOutputPlaneY()->EnabledOn();
 459                         bbGetOutputPlaneZ()->SetInteractor(interactor);
 460                         bbGetOutputPlaneZ()->EnabledOn();
 461                         bbGetOutputPlane3Pts()->SetInteractor(interactor);
 462                         bbGetOutputPlane3Pts()->EnabledOn();
 463                 } // if
 464         }
 465
 466         //-----------------------------------------------------------------
 467         void vtkImageDataPointerRelay::bbUserSetDefaultValues()
 468         {
 469
 470         }
 471
 472         //-----------------------------------------------------------------
 473   void vtkImageDataPointerRelay::bbUserInitializeProcessing()
 474         {
 475         }
 476
 477         //-----------------------------------------------------------------
 478   void vtkImageDataPointerRelay::bbUserFinalizeProcessing()
 479         {
 480         }
 481
 482   vtkImagePlaneWidget* ImagePlanes::GetPlaneWidget(unsigned char activationkey, double r, double g, double b, vtkCellPicker* picker)
 483   {
 484                 vtkProperty* prop1 = 0;
 485                 vtkImagePlaneWidget* planeWidget = 0;
 486
 487                 planeWidget = vtkImagePlaneWidget::New();
 488                 planeWidget->DisplayTextOn();
 489                 planeWidget->SetPicker(picker);
 490                 planeWidget->SetKeyPressActivationValue(activationkey);
 491                 prop1 = planeWidget->GetPlaneProperty();
 492                 prop1->SetColor(r, g, b);
 493
 494                 return planeWidget;
 495   }
 496
 497   double* ImagePlanes::getCrossProduct(double* vect0,double* vect1){
 498         double* vectCross;
 499         vectCross = new double[3];
 500         vectCross[0] = vect0[1]*vect1[2]-(vect0[2]*vect1[1]);
 501         vectCross[1] = -(vect0[0]*vect1[2]-(vect0[2]*vect1[0]));
 502         vectCross[2] = vect0[0]*vect1[1]-(vect0[1]*vect1[0]);
 503
 504         return vectCross;
 505   }
 506 /**
 507 **      Returns the magnitud of the given vector
 508 **/
 509   double ImagePlanes::getMagnitud(double* vect){
 510
 511         double mag;
 512         mag = sqrt(pow(vect[0],2) + pow(vect[1],2) + pow(vect[2],2));
 513         //std::cout<<"mag "<<mag <<std::endl;
 514         return mag;
 515   }
 516 /**
 517 **      returns the unitary vector of the given vector
 518 **      u = 1/|vect| . vect
 519 **/
 520   double* ImagePlanes::getNormal(double* vect){
 521
 522         double* vectnorm;
 523         double mag = getMagnitud(vect);
 524
 525         vectnorm = new double[3];
 526
 527         if(mag!=0){
 528                 vectnorm[0] = vect[0]/mag;
 529                 vectnorm[1] = vect[1]/mag;
 530                 vectnorm[2] = vect[2]/mag;
 531         }else{
 532                 vectnorm[0] = 0;
 533                 vectnorm[1] = 0;
 534                 vectnorm[2] = 0;
 535         }
 536
 537         return vectnorm;
 538   }
 539
 540   double* ImagePlanes::makeVector(double podouble0[3], double podouble1[3]){
 541         double *vect;
 542         vect = new double[3];
 543
 544         vect[0]= podouble1[0]-podouble0[0];
 545         vect[1]= podouble1[1]-podouble0[1];
 546         vect[2]= podouble1[2]-podouble0[2];
 547
 548         return vect;
 549   }
 550
 551 }//namespace bbtk
 552
 553 #endif // _USE_VTK_