packages/vtk/src/bbvtkImagePlanes.cxx

   1 /*=========================================================================
   2   Program:   bbtk
   3   Module:    $RCSfile: bbvtkImagePlanes.cxx,v $
   4   Language:  C++
   5   Date:      $Date: 2012/07/09 13:02:42 $
   6   Version:   $Revision: 1.37 $
   7 =========================================================================*/
   8
   9 /* ---------------------------------------------------------------------
  10
  11 * Copyright (c) CREATIS-LRMN (Centre de Recherche en Imagerie Medicale)
  12 * Authors : Eduardo Davila, Laurent Guigues, Jean-Pierre Roux
  13 *
  14 *  This software is governed by the CeCILL-B license under French law and
  15 *  abiding by the rules of distribution of free software. You can  use,
  16 *  modify and/ or redistribute the software under the terms of the CeCILL-B
  17 *  license as circulated by CEA, CNRS and INRIA at the following URL
  18 *  http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html
  19 *  or in the file LICENSE.txt.
  20 *
  21 *  As a counterpart to the access to the source code and  rights to copy,
  22 *  modify and redistribute granted by the license, users are provided only
  23 *  with a limited warranty  and the software's author,  the holder of the
  24 *  economic rights,  and the successive licensors  have only  limited
  25 *  liability.
  26 *
  27 *  The fact that you are presently reading this means that you have had
  28 *  knowledge of the CeCILL-B license and that you accept its terms.
  29 * ------------------------------------------------------------------------ */
  30
  31 /**
  32  *  \file
  33  *  \brief
  34  */
  35
  36 #ifdef _USE_VTK_
  37 #include "bbvtkImagePlanes.h"
  38 #include "bbvtkPackage.h"
  39 #include "vtkCellPicker.h"
  40 #include "vtkProperty.h"
  41 #include "vtkPolyData.h"
  42
  43
  44 #include "vtkMetaImageWriter.h"
  45 #include "vtkPNGWriter.h"
  46
  47 #include "bbstdCast.h"
  48 #include <vtkCommand.h>
  49
  50 #include "vtkImageData.h"
  51 //#include "vtkOutlineFilter.h"
  52 //#include "vtkPolyDataMapper.h"
  53 //#include "vtkActor.h"
  54 #include "vtkImagePlaneWidget.h"
  55 #include "vtkCellPicker.h"
  56 //#include "vtkProperty.h"
  57
  58 //#include "vtkRenderer.h"
  59 //#include "vtkCamera.h"
  60
  61 #include "vtkPlaneWidget.h"
  62
  63 #include <vtkImplicitPlaneWidget.h>
  64
  65 #include "bbstdRelay.h"
  66
  67 #include "vtkObjectFactory.h"
  68 #include "vtkImageFlip.h"
  69
  70 #include "vtkImageReslice.h"
  71 #include "vtkImageChangeInformation.h"
  72
  73 namespace bbstd
  74 {
  75
  76   //====================================================================
  77   BBTK_BLACK_BOX_TEMPLATE2_IMPLEMENTATION(Cast,
  78                                           bbtk::AtomicBlackBox);
  79   //====================================================================
  80   //====================================================================
  81 //  BBTK_BLACK_BOX_TEMPLATE_IMPLEMENTATION(Relay,
  82 //                                       bbtk::AtomicBlackBox);
  83   //====================================================================
  84
  85 }
  86 using namespace bbstd;
  87 /*
  88 namespace bbtk
  89 {
  90         typedef vtkImageData::Pointer vtkImageDataPointer;
  91   BBTK_DEFINE_HUMAN_READABLE_TYPE_NAME(vtkImageDataPointer,
  92                                        "vtkImageDataPointer");
  93 }
  94 */
  95 namespace bbvtk
  96 {
  97
  98   //====================================================================
  99   // Add the specialized adaptors to the package
 100   typedef vtkImagePlaneWidget* I;
 101   typedef vtkInteractorObserver* O;
 102
 103   BBTK_ADD_TEMPLATE2_BLACK_BOX_TO_PACKAGE(vtk,Cast,I,O);
 104
 105   BBTK_DEFINE_RELAY_BLACK_BOX(vtkImageDataPointer,vtk,vtkImageDataPointerRelay);
 106   BBTK_BLACK_BOX_IMPLEMENTATION(vtkImageDataPointerRelay,bbtk::AtomicBlackBox);
 107
 108   BBTK_ADD_BLACK_BOX_TO_PACKAGE(vtk,vtkImageDataPointerRelay);
 109  // BBTK_ADD_TEMPLATE_BLACK_BOX_TO_PACKAGE(vtk,Relay,vtkImageDataPointer);
 110   //Pointer);
 111
 112 }
 113
 114 namespace bbvtk
 115 {
 116
 117   //================================================================
 118  class ImagePlanes::VtkCallbackType : public vtkCommand
 119  {
 120  public:
 121    static VtkCallbackType *New()
 122    {
 123      return new VtkCallbackType;
 124    }
 125    //vtkTypeRevisionMacro(VtkCallbackType,vtkCommand);
 126
 127    virtual void Execute(vtkObject *caller, unsigned long, void*)
 128    {
 129        mBlackBox->Process();
 130        mBlackBox->bbSignalOutputModification();
 131    }
 132    void SetBlackBox(ImagePlanes *BB) { mBlackBox = BB;};
 133    //   void SetVtkPlaneWidget( vtkImagePlaneWidget *planeWidget );
 134    VtkCallbackType() {};
 135
 136  private:
 137    //   vtkPlaneWidget *planeWidget;
 138    ImagePlanes *mBlackBox;
 139  };
 140   //================================================================
 141
 142   //vtkCxxRevisionMacro(ImagePlanes::VtkCallbackType, "$Revision: 1.37 $");
 143
 144   //================================================================
 145
 146    BBTK_ADD_BLACK_BOX_TO_PACKAGE(vtk,ImagePlanes)
 147    BBTK_BLACK_BOX_IMPLEMENTATION(ImagePlanes,bbtk::AtomicBlackBox);
 148
 149    void ImagePlanes::bbUserSetDefaultValues()
 150    {
 151      bbSetOutputPlaneX(0);
 152      bbSetOutputPlaneY(0);
 153      bbSetOutputPlaneZ(0);
 154      bbSetOutputImageX(0);
 155      bbSetOutputImageY(0);
 156      bbSetOutputImageZ(0);
 157      bbSetInputIn(0);
 158      std::vector<double> vect;
 159      vect.push_back(0);
 160      vect.push_back(0);
 161      bbSetInputWindowLevel (vect);
 162      mVtkCallback = 0;
 163
 164      std::vector<int> vectpoints;
 165
 166      bbSetOutputPlane3Pts(0);
 167      bbSetOutputImage3Pts(0);
 168      bbSetInputPointsX(vectpoints);
 169      bbSetInputPointsY(vectpoints);
 170      bbSetInputPointsZ(vectpoints);
 171
 172      _imageReslicer = NULL;
 173      image          = NULL;
 174      _transform     = NULL;
 175      _matrix        = NULL;
 176
 177            bbSetInputInterpolation(1);
 178    }
 179
 180
 181    void ImagePlanes::bbUserInitializeProcessing()
 182    {
 183      /// CREATION DES WIDGETS
 184      if (bbGetOutputPlaneX() != 0) return;
 185
 186      // The shared picker enables us to use 3 planes at one time
 187      // and gets the picking order right
 188      vtkCellPicker* picker = vtkCellPicker::New();
 189      picker->SetTolerance(0.005);
 190
 191      // The 3 image plane widgets
 192      vtkImagePlaneWidget* planeWidgetX = GetPlaneWidget('x', 1, 0, 0, picker);
 193      vtkImagePlaneWidget* planeWidgetY = GetPlaneWidget('y', 1, 1, 0, picker);
 194      planeWidgetY->SetLookupTable(planeWidgetX->GetLookupTable());
 195
 196      vtkImagePlaneWidget* planeWidgetZ = GetPlaneWidget('z', 0, 0, 1, picker);
 197      planeWidgetZ->SetLookupTable(planeWidgetX->GetLookupTable());
 198
 199      vtkImagePlaneWidget* planeWidget3Pts = GetPlaneWidget('3', 0, 1, 1, picker);
 200      planeWidget3Pts->SetLookupTable(planeWidgetX->GetLookupTable());
 201
 202            // EED MPR view orientation correction..
 203      vtkImageFlip  *flipYFilter = vtkImageFlip::New();
 204      flipYFilter->SetFilteredAxis(1); // flip y axis
 205      flipYFilter->SetInput( planeWidgetX->GetResliceOutput() );
 206      flipYFilter->Update();
 207
 208            vtkImageChangeInformation *image = vtkImageChangeInformation::New();
 209            image->SetInput(  planeWidgetY->GetResliceOutput()  );
 210            image->SetOutputSpacing( 1,1,1 );
 211            image->CenterImageOn();
 212            image->Update();
 213            _imageTransform = vtkTransform::New();
 214            vtkImageReslice *slicer =vtkImageReslice::New();
 215            slicer->SetInput( image->GetOutput() );
 216            slicer->SetInformationInput( image->GetOutput() );
 217            slicer->SetResliceTransform( _imageTransform );
 218            slicer->SetOutputOrigin(0 , 0 , 0 );
 219            slicer->SetInterpolationModeToNearestNeighbor();
 220            slicer->Update();
 221            vtkImageChangeInformation *imageResult = vtkImageChangeInformation::New();
 222            imageResult->SetInput( slicer->GetOutput() );
 223            double spc[3];
 224             planeWidgetY->GetResliceOutput()->GetSpacing(spc);
 225            imageResult->SetOutputSpacing( spc[1], spc[0], spc[2] );
 226            imageResult->SetOutputOrigin( 0,0,0 );
 227
 228
 229      bbSetOutputPlaneX(planeWidgetX);
 230      bbSetOutputPlaneY(planeWidgetY);
 231      bbSetOutputPlaneZ(planeWidgetZ);
 232      bbSetOutputPlane3Pts(planeWidget3Pts);
 233      bbSetOutputImageX( flipYFilter->GetOutput() );             // EED MPR view orientation correction..
 234      bbSetOutputImageY( imageResult->GetOutput() );                     // EED MPR view orientation correction..
 235      bbSetOutputImageZ(planeWidgetZ->GetResliceOutput());
 236      bbSetInputInteractor(0);
 237      //bbSetOutputImage3Pts(planeWidget3Pts->GetResliceOutput());
 238
 239          if(picker != 0)
 240                 picker->UnRegister(NULL);
 241
 242      mVtkCallback = VtkCallbackType::New();
 243      mVtkCallback->SetBlackBox(this);
 244      planeWidgetX->AddObserver(vtkCommand::InteractionEvent,mVtkCallback);
 245      planeWidgetY->AddObserver(vtkCommand::InteractionEvent,mVtkCallback);
 246      planeWidgetZ->AddObserver(vtkCommand::InteractionEvent,mVtkCallback);
 247
 248    }
 249
 250 //---------------------------------------------------------------------
 251   void ImagePlanes::bbUserFinalizeProcessing()
 252   {
 253
 254     if (bbGetOutputPlaneX())
 255       {
 256
 257         /*
 258           bbGetOutputPlaneX()->RemoveObserver(mVtkCallback);
 259           bbGetOutputPlaneY()->RemoveObserver(mVtkCallback);
 260           bbGetOutputPlaneZ()->RemoveObserver(mVtkCallback);
 261
 262         bbGetOutputPlaneX()->Delete();
 263         bbGetOutputPlaneY()->Delete();
 264         bbGetOutputPlaneZ()->Delete();
 265         mVtkCallback->Delete();
 266         */
 267         //bbGetOutputPlaneX()->SetInput(NULL);
 268         //bbGetOutputPlaneY()->SetInput(NULL);
 269         //bbGetOutputPlaneZ()->SetInput(NULL);
 270
 271       }
 272   }
 273
 274 //---------------------------------------------------------------------
 275   void ImagePlanes::Process()
 276   {
 277
 278         if (bbGetInputIn()!=0)
 279         {
 280                 int dim[3];
 281                 int ext[6];
 282                 bbGetOutputPlaneX()->GetResliceOutput()->GetWholeExtent(ext);
 283                 dim[0] = ext[1]-ext[0]+1;
 284                 dim[1] = ext[3]-ext[2]+1;
 285                 dim[2] = ext[5]-ext[4]+1;
 286                 _imageTransform->Identity();
 287                 _imageTransform->PostMultiply();
 288                 _imageTransform->Translate( (int)(-(dim[0]/2)) , (int)(-(dim[1]/2)) ,0);
 289                 _imageTransform->RotateZ(90);
 290
 291
 292                 if ( image != bbGetInputIn()){//bbGetInputStatus("In") != bbtk::UPTODATE ){
 293                         // Input image has changed : reinitialize planes
 294                         image = bbGetInputIn();
 295
 296                         // Initial values : center of the volume (in real world, not in pixels!)
 297                         int xMin, xMax, yMin, yMax, zMin, zMax;
 298                         bbGetInputIn()->GetExtent(xMin, xMax, yMin, yMax, zMin, zMax);
 299                         double xSpacing, ySpacing, zSpacing;
 300                         bbGetInputIn()->GetSpacing(xSpacing, ySpacing, zSpacing);
 301
 302                         bbGetOutputPlaneX()->SetInput(bbGetInputIn());
 303                         bbGetOutputPlaneX()->SetPlaneOrientationToXAxes();
 304                         bbGetOutputPlaneX()->SetSlicePosition((xMax+xMin)/2.*xSpacing);
 305
 306                         //                 bbGetOutputPlaneX()->SetOrigin( 58*xSpacing , 80*ySpacing , 82*zSpacing );
 307                         //                 bbGetOutputPlaneX()->SetPoint1( 0*xSpacing, 146*ySpacing, 186*zSpacing);
 308                         //                 bbGetOutputPlaneX()->SetPoint2( 126*xSpacing, 146*ySpacing, 0*zSpacing);
 309
 310                         bbGetOutputPlaneY()->SetInput(bbGetInputIn());
 311                         bbGetOutputPlaneY()->SetPlaneOrientationToYAxes();
 312                         bbGetOutputPlaneY()->SetSlicePosition((yMax+yMin)/2.*ySpacing);
 313
 314                         bbGetOutputPlaneZ()->SetInput(bbGetInputIn());
 315                         bbGetOutputPlaneZ()->SetPlaneOrientationToZAxes();
 316                         bbGetOutputPlaneZ()->SetSlicePosition((zMax+zMin)/2.*zSpacing);
 317
 318                         if (bbGetInputWindowLevel()[0]!=0)
 319                         {
 320                                 bbGetOutputPlaneZ()->SetWindowLevel(bbGetInputWindowLevel()[0],
 321                                                                 bbGetInputWindowLevel()[1]);
 322                         } else {
 323                                 double *range = image->GetScalarRange();
 324                                 bbGetOutputPlaneZ()->SetWindowLevel(range[1]-range[0],
 325                                                                0.5*(range[1]+range[0]));
 326                         } // windowlevel
 327                         updateInteractor();
 328
 329                         dim[0] = xMax-xMin+1;
 330                         dim[1] = yMax-yMin+1;
 331                         dim[2] = zMax-zMin+1;
 332                         _imageTransform->Identity();
 333                         _imageTransform->PostMultiply();
 334                         _imageTransform->Translate( (int)(-(dim[0]/2)*(1/xSpacing)) , (int)(-(dim[2]/2)*(1/zSpacing)) ,0);
 335                         _imageTransform->RotateZ(90);
 336
 337            } // image
 338
 339                         // UPDATE DES SORTIES
 340                 bbGetOutputPlaneX()->SetResliceInterpolate( bbGetInputInterpolation() );
 341                 bbGetOutputPlaneY()->SetResliceInterpolate( bbGetInputInterpolation() );
 342                 bbGetOutputPlaneZ()->SetResliceInterpolate( bbGetInputInterpolation() );
 343
 344
 345                 bbGetOutputPlaneX()->GetResliceOutput()->Update();
 346                 bbGetOutputPlaneY()->GetResliceOutput()->Update();
 347                 bbGetOutputPlaneZ()->GetResliceOutput()->Update();
 348
 349                 std::vector<int> pointsx = bbGetInputPointsX();
 350                 std::vector<int> pointsy = bbGetInputPointsY();
 351                 std::vector<int> pointsz = bbGetInputPointsZ();
 352
 353                 //std::cout<<pointsx.size()<<pointsy.size()<<pointsz.size()<<std::endl;
 354
 355                 if (pointsx.size()==pointsy.size() && pointsx.size()==pointsz.size()&&pointsx.size()>=3)
 356                 {
 357
 358                         //Get the corresponding three points out of the vectors
 359                         double origin[3];
 360                         origin[0] = pointsx[0];
 361                         origin[1] = pointsy[0];
 362                         origin[2] = pointsz[0];
 363
 364                         double point1[3];
 365                         point1[0] = pointsx[1];
 366                         point1[1] = pointsy[1];
 367                         point1[2] = pointsz[1];
 368                         double point2[3];
 369                         point2[0]= pointsx[2];
 370                         point2[1]= pointsy[2];
 371                         point2[2]= pointsz[2];
 372
 373                         //With the three points we create the corresponding X, Y and Z vectors all orthogonal to each other
 374                         double* vect1= getNormal(makeVector(origin, point1));
 375                         double* vect2= getNormal(makeVector(origin, point2));
 376                         double* crossp = getCrossProduct(vect1, vect2);
 377
 378                         double *newx = getCrossProduct(vect2, crossp);
 379
 380                         int ext[6],factor=0;
 381                         bbGetInputIn()->GetExtent(ext);
 382
 383                         factor = ext[0]<ext[3]? ext[3] : ext[0];
 384                         factor = factor<ext[5]? ext[5] : factor;
 385
 386         //for the plane widgets
 387                         vtkImagePlaneWidget* plane3pts = (vtkImagePlaneWidget*)bbGetOutputPlane3Pts();
 388                         plane3pts->SetInput(bbGetInputIn());
 389                         double xSpacing, ySpacing, zSpacing;
 390                         bbGetInputIn()->GetSpacing(xSpacing, ySpacing, zSpacing);
 391                         plane3pts->SetOrigin(pointsx[0]*xSpacing,pointsy[0]*ySpacing,pointsz[0]*zSpacing);
 392                         plane3pts->SetPoint1((origin[0]+newx[0]*factor)*xSpacing,
 393                                                                         (origin[1]+newx[1]*factor)*ySpacing,
 394                                                                         (origin[2]+newx[2]*factor)*zSpacing);
 395                         plane3pts->SetPoint2((origin[0]+vect2[0]*factor)*xSpacing,
 396                                                                         (origin[1]+vect2[1]*factor)*ySpacing,
 397                                                                         (origin[2]+vect2[2]*factor)*zSpacing);
 398                         plane3pts->GetResliceOutput()->Update();
 399 //To get the slice of image out of the selected volume
 400                         if (_imageReslicer==NULL){
 401                                 _imageReslicer = vtkImageReslice::New();
 402                                 _imageReslicer->SetOutputDimensionality(2);
 403                                 _transform = vtkTransform::New();
 404                                 _matrix = vtkMatrix4x4::New();
 405                         }
 406                         _imageReslicer->SetInterpolationMode( bbGetInputInterpolation() );
 407                         _imageReslicer->SetInput( bbGetInputIn() );
 408                         _imageReslicer->SetInformationInput(bbGetInputIn());
 409                         //fill out the information with the created vectors and using the spacing of the image
 410                         _imageReslicer->SetResliceAxesDirectionCosines(newx[0]*xSpacing,newx[1]*xSpacing,newx[2]*xSpacing,
 411                                                                         vect2[0]*ySpacing,vect2[1]*ySpacing,vect2[2]*ySpacing,
 412                                                                         crossp[0]*zSpacing,crossp[1]*zSpacing,crossp[2]*zSpacing);
 413                         _imageReslicer->SetResliceAxesOrigin(origin[0]*xSpacing,origin[1]*ySpacing,origin[2]*zSpacing);
 414                         _imageReslicer->GetOutput()->Update();
 415                         _imageReslicer->GetOutput()->UpdateInformation();
 416
 417                         bbSetOutputImage3Pts(_imageReslicer->GetOutput());
 418
 419                         _matrix->Identity();
 420
 421                         _matrix->SetElement(0,0,newx[0]*xSpacing);
 422                         _matrix->SetElement(1,0,newx[1]*xSpacing);
 423                         _matrix->SetElement(2,0,newx[2]*xSpacing);
 424                         _matrix->SetElement(0,1,vect2[0]*ySpacing);
 425                         _matrix->SetElement(1,1,vect2[1]*ySpacing);
 426                         _matrix->SetElement(2,1,vect2[2]*ySpacing);
 427                         _matrix->SetElement(0,2,crossp[0]*zSpacing);
 428                         _matrix->SetElement(1,2,crossp[1]*zSpacing);
 429                         _matrix->SetElement(2,2,crossp[2]*zSpacing);
 430                         _matrix->SetElement(0,3,origin[0]*xSpacing);
 431                         _matrix->SetElement(1,3,origin[1]*ySpacing);
 432                         _matrix->SetElement(2,3,origin[2]*zSpacing);
 433
 434                         _transform->SetMatrix(_matrix);
 435
 436                         //set the transformation out to be used by other bbBoxes
 437                         bbSetOutputTransform3Pts((vtkLinearTransform*)_transform);
 438                 }       // pointsx pointsy  pointsz
 439         } // bbGetInputIn
 440   }
 441
 442   void ImagePlanes::updateInteractor(){
 443
 444         vtkRenderWindowInteractor* interactor = bbGetInputInteractor();
 445
 446         if(interactor){
 447                 bbGetOutputPlaneX()->SetInteractor(interactor);
 448                 bbGetOutputPlaneX()->EnabledOn();
 449                 bbGetOutputPlaneY()->SetInteractor(interactor);
 450                 bbGetOutputPlaneY()->EnabledOn();
 451                 bbGetOutputPlaneZ()->SetInteractor(interactor);
 452                 bbGetOutputPlaneZ()->EnabledOn();
 453                 bbGetOutputPlane3Pts()->SetInteractor(interactor);
 454                 bbGetOutputPlane3Pts()->EnabledOn();
 455         }
 456   }
 457         //-----------------------------------------------------------------
 458   void vtkImageDataPointerRelay::bbUserSetDefaultValues()
 459         {
 460
 461         }
 462
 463         //-----------------------------------------------------------------
 464   void vtkImageDataPointerRelay::bbUserInitializeProcessing()
 465         {
 466         }
 467
 468         //-----------------------------------------------------------------
 469   void vtkImageDataPointerRelay::bbUserFinalizeProcessing()
 470         {
 471         }
 472
 473   vtkImagePlaneWidget* ImagePlanes::GetPlaneWidget(unsigned char activationkey, double r, double g, double b, vtkCellPicker* picker)
 474   {
 475                 vtkProperty* prop1 = 0;
 476                 vtkImagePlaneWidget* planeWidget = 0;
 477
 478                 planeWidget = vtkImagePlaneWidget::New();
 479                 planeWidget->DisplayTextOn();
 480                 planeWidget->SetPicker(picker);
 481                 planeWidget->SetKeyPressActivationValue(activationkey);
 482                 prop1 = planeWidget->GetPlaneProperty();
 483                 prop1->SetColor(r, g, b);
 484
 485                 return planeWidget;
 486   }
 487
 488   double* ImagePlanes::getCrossProduct(double* vect0,double* vect1){
 489         double* vectCross;
 490         vectCross = new double[3];
 491         vectCross[0] = vect0[1]*vect1[2]-(vect0[2]*vect1[1]);
 492         vectCross[1] = -(vect0[0]*vect1[2]-(vect0[2]*vect1[0]));
 493         vectCross[2] = vect0[0]*vect1[1]-(vect0[1]*vect1[0]);
 494
 495         return vectCross;
 496   }
 497 /**
 498 **      Returns the magnitud of the given vector
 499 **/
 500   double ImagePlanes::getMagnitud(double* vect){
 501
 502         double mag;
 503         mag = sqrt(pow(vect[0],2) + pow(vect[1],2) + pow(vect[2],2));
 504         //std::cout<<"mag "<<mag <<std::endl;
 505         return mag;
 506   }
 507 /**
 508 **      returns the unitary vector of the given vector
 509 **      u = 1/|vect| . vect
 510 **/
 511   double* ImagePlanes::getNormal(double* vect){
 512
 513         double* vectnorm;
 514         double mag = getMagnitud(vect);
 515
 516         vectnorm = new double[3];
 517
 518         if(mag!=0){
 519                 vectnorm[0] = vect[0]/mag;
 520                 vectnorm[1] = vect[1]/mag;
 521                 vectnorm[2] = vect[2]/mag;
 522         }else{
 523                 vectnorm[0] = 0;
 524                 vectnorm[1] = 0;
 525                 vectnorm[2] = 0;
 526         }
 527
 528         return vectnorm;
 529   }
 530
 531   double* ImagePlanes::makeVector(double podouble0[3], double podouble1[3]){
 532         double *vect;
 533         vect = new double[3];
 534
 535         vect[0]= podouble1[0]-podouble0[0];
 536         vect[1]= podouble1[1]-podouble0[1];
 537         vect[2]= podouble1[2]-podouble0[2];
 538
 539         return vect;
 540   }
 541
 542 }//namespace bbtk
 543
 544 #endif // _USE_VTK_