vv/vvSlicer.cxx

   1 /*=========================================================================
   2   Program:   vv                     http://www.creatis.insa-lyon.fr/rio/vv
   3
   4   Authors belong to:
   5   - University of LYON              http://www.universite-lyon.fr/
   6   - Léon Bérard cancer center       http://www.centreleonberard.fr
   7   - CREATIS CNRS laboratory         http://www.creatis.insa-lyon.fr
   8
   9   This software is distributed WITHOUT ANY WARRANTY; without even
  10   the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  11   PURPOSE.  See the copyright notices for more information.
  12
  13   It is distributed under dual licence
  14
  15   - BSD        See included LICENSE.txt file
  16   - CeCILL-B   http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html
  17   ===========================================================================**/
  18
  19 #include "vvSlicer.h"
  20 #include "vvImage.h"
  21 #include "vvSlicerManagerCommand.h"
  22 #include "vvGlyphSource.h"
  23 #include "vvGlyph2D.h"
  24 #include "vvImageMapToWLColors.h"
  25
  26 #include <vtkTextProperty.h>
  27 #include <vtkTextActor.h>
  28 #include <vtkTextSource.h>
  29 #include <vtkActor2D.h>
  30 #include <vtkCursor2D.h>
  31 #include <vtkPolyDataMapper2D.h>
  32 #include <vtkProperty2D.h>
  33 #include <vtkCornerAnnotation.h>
  34 #include <vtkImageMapToWindowLevelColors.h>
  35 #include <vtkImageData.h>
  36 #include <vtkImageActor.h>
  37 #include <vvBlendImageActor.h>
  38 #include <vtkToolkits.h>
  39 #include <vtkObjectFactory.h>
  40 #include <vtkPointData.h>
  41 #include <vtkDataArray.h>
  42 #include <vtkFloatArray.h>
  43 #include <vtkClipPolyData.h>
  44 #include <vtkGlyph3D.h>
  45 #include <vtkMath.h>
  46 #include <vtkCursor3D.h>
  47 #include <vtkProperty.h>
  48 #include <vtkLight.h>
  49 #include <vtkLightCollection.h>
  50 #include <vtkScalarBarActor.h>
  51 #include <vtkLookupTable.h>
  52
  53 #include <vtkRenderer.h>
  54 #include <vtkRendererCollection.h>
  55 #include <vtkRenderWindow.h>
  56 #include <vtkRenderWindowInteractor.h>
  57 #include <vtkCamera.h>
  58 #include <vtkCallbackCommand.h>
  59 #include <vtkCommand.h>
  60 #include <vtkPolyDataMapper.h>
  61 #include <vtkBox.h>
  62
  63 #include <vtkExtractVOI.h>
  64 #include <vtkSphereSource.h>
  65 #include <vtkCutter.h>
  66 #include <vtkAssignAttribute.h>
  67 #include <vtkImageAccumulate.h>
  68 #include <vtkImageReslice.h>
  69
  70 vtkCxxRevisionMacro(vvSlicer, "DummyRevision");
  71 vtkStandardNewMacro(vvSlicer);
  72 static void copyExtent(int* in, int* to){
  73  for(int i=0; i<6; ++i) to[i]=in[i];
  74 }
  75 //------------------------------------------------------------------------------
  76 vvSlicer::vvSlicer()
  77 {
  78   this->UnInstallPipeline();
  79   mImage = NULL;
  80   mReducedExtent = new int[6];
  81   mCurrentTSlice = 0;
  82   mUseReducedExtent = false;
  83
  84   mCurrent[0] = -VTK_DOUBLE_MAX;
  85   mCurrent[1] = -VTK_DOUBLE_MAX;
  86   mCurrent[2] = -VTK_DOUBLE_MAX;
  87
  88   mCursor[0] = -VTK_DOUBLE_MAX;
  89   mCursor[1] = -VTK_DOUBLE_MAX;
  90   mCursor[2] = -VTK_DOUBLE_MAX;
  91   mCursor[3] = -VTK_DOUBLE_MAX;
  92
  93   mSubSampling = 5;
  94   mScale = 1;
  95   mVFLog = 0;
  96   mVFWidth = 1;
  97   mVFColor[0] = 0;
  98   mVFColor[1] = 1;
  99   mVFColor[2] = 0;
 100
 101   std::string text = "F1 = sagital; F2 = coronal; F3 = axial\n";
 102   text += "F5 = horizontal flip; F6 = vertical flip\n\n";
 103   text += "0,1,2,3,4,5 : preset windowing\n";
 104   text += "6,7,8,9 : preset colormap\n";
 105   text += "z : local windowing\n";
 106   text += "r : reset view\n";
 107   text += "l : reload image\n";
 108   text += "f : fly to mouse position\n";
 109   text += "g : go to cross hair position\n\n";
 110   text += "Up,down : change slice\n";
 111   text += "Left,right : change tenporal slice\n\n";
 112   text += "Scrollbar (or w/x) : zoom in/out\n";
 113   text += "left button : synchronize all views\n";
 114   text += "middle button : grab image\n";
 115   text += "right button : change windowing\n";
 116
 117   crossCursor = vtkSmartPointer<vtkCursor2D>::New();
 118   crossCursor->AllOff();
 119   crossCursor->AxesOn();
 120   crossCursor->SetTranslationMode(1);
 121   crossCursor->SetRadius(2);
 122
 123   pdm = vtkSmartPointer<vtkPolyDataMapper2D>::New();
 124   pdm->SetInput(crossCursor->GetOutput());
 125
 126   pdmA = vtkSmartPointer<vtkActor2D>::New();
 127   pdmA->SetMapper(pdm);
 128   pdmA->GetProperty()->SetColor(255,10,212);
 129   pdmA->SetVisibility(0);
 130   pdmA->SetPickable(0);
 131
 132   ca = vtkSmartPointer<vtkCornerAnnotation>::New();
 133   ca->GetTextProperty()->SetColor(255,10,212);
 134   ca->SetVisibility(1);
 135   mFileName = "";
 136
 137   mVF = NULL;
 138   mOverlay = NULL;
 139   mFusion = NULL;
 140   mLandmarks = NULL;
 141
 142   legend = vtkSmartPointer<vtkScalarBarActor>::New();
 143   //legend->SetTitle("test!");
 144   legend->SetPosition(0.82,0.18);
 145   legend->SetWidth(0.1);
 146   legend->SetVisibility(0);
 147   legend->SetLabelFormat("%.1f");
 148   this->GetRenderer()->AddActor(legend);
 149
 150   this->WindowLevel->Delete();
 151   this->WindowLevel = vvImageMapToWLColors::New();
 152
 153   this->InstallPipeline();
 154 }
 155 //------------------------------------------------------------------------------
 156
 157
 158 //------------------------------------------------------------------------------
 159 vtkImageMapToWindowLevelColors* vvSlicer::GetOverlayMapper()
 160 {
 161   return mOverlayMapper.GetPointer();
 162 }
 163 //------------------------------------------------------------------------------
 164
 165
 166 //------------------------------------------------------------------------------
 167 vvBlendImageActor* vvSlicer::GetOverlayActor()
 168 {
 169   return mOverlayActor.GetPointer();
 170 }
 171 //------------------------------------------------------------------------------
 172
 173
 174 //------------------------------------------------------------------------------
 175 vtkImageMapToWindowLevelColors* vvSlicer::GetFusionMapper()
 176 {
 177   return mFusionMapper.GetPointer();
 178 }
 179 //------------------------------------------------------------------------------
 180
 181
 182 //------------------------------------------------------------------------------
 183 vtkImageActor* vvSlicer::GetFusionActor()
 184 {
 185   return mFusionActor.GetPointer();
 186 }
 187 //------------------------------------------------------------------------------
 188
 189
 190 //------------------------------------------------------------------------------
 191 vtkActor* vvSlicer::GetVFActor()
 192 {
 193   return mVFActor.GetPointer();
 194 }
 195 //------------------------------------------------------------------------------
 196
 197
 198 //------------------------------------------------------------------------------
 199 vtkCornerAnnotation* vvSlicer::GetAnnotation()
 200 {
 201   return ca.GetPointer();
 202 }
 203 //------------------------------------------------------------------------------
 204
 205
 206 //------------------------------------------------------------------------------
 207 void vvSlicer::EnableReducedExtent(bool b)
 208 {
 209   mUseReducedExtent = b;
 210 }
 211 //------------------------------------------------------------------------------
 212
 213
 214 //------------------------------------------------------------------------------
 215 void vvSlicer::SetReducedExtent(int * ext)
 216 {
 217   copyExtent(ext, mReducedExtent);
 218 }
 219 //------------------------------------------------------------------------------
 220
 221
 222 //------------------------------------------------------------------------------
 223 void vvSlicer::AddContour(vvMesh::Pointer contour,bool propagate)
 224 {
 225
 226   mSurfaceCutActors.push_back(new vvMeshActor());
 227   if (propagate)
 228     mSurfaceCutActors.back()->Init(contour,mCurrentTSlice,mVF);
 229   else
 230     mSurfaceCutActors.back()->Init(contour,mCurrentTSlice);
 231   mSurfaceCutActors.back()->SetSlicingOrientation(SliceOrientation);
 232   this->GetRenderer()->AddActor(mSurfaceCutActors.back()->GetActor());
 233
 234   SetContourSlice();
 235 }
 236 //------------------------------------------------------------------------------
 237
 238
 239 //------------------------------------------------------------------------------
 240 void vvSlicer::ToggleContourSuperposition()
 241 {
 242   for (std::vector<vvMeshActor*>::iterator i=mSurfaceCutActors.begin();
 243        i!=mSurfaceCutActors.end(); i++)
 244     (*i)->ToggleSuperposition();
 245 }
 246 //------------------------------------------------------------------------------
 247
 248
 249 //------------------------------------------------------------------------------
 250 void vvSlicer::SetCursorColor(int r,int g, int b)
 251 {
 252   pdmA->GetProperty()->SetColor(r,g,b);
 253 }
 254 //------------------------------------------------------------------------------
 255
 256
 257 //------------------------------------------------------------------------------
 258 void vvSlicer::SetCursorVisibility(bool s)
 259 {
 260   pdmA->SetVisibility(s);
 261 }
 262 //------------------------------------------------------------------------------
 263
 264
 265 //------------------------------------------------------------------------------
 266 bool vvSlicer::GetCursorVisibility()
 267 {
 268   return pdmA->GetVisibility();
 269 }
 270 //------------------------------------------------------------------------------
 271
 272
 273 //------------------------------------------------------------------------------
 274 void vvSlicer::SetCornerAnnotationVisibility(bool s)
 275 {
 276   ca->SetVisibility(s);
 277 }
 278 //------------------------------------------------------------------------------
 279
 280
 281 //------------------------------------------------------------------------------
 282 bool vvSlicer::GetCornerAnnotationVisibility()
 283 {
 284   return ca->GetVisibility();
 285 }
 286 //------------------------------------------------------------------------------
 287
 288
 289 //------------------------------------------------------------------------------
 290 vvSlicer::~vvSlicer()
 291 {
 292   for (std::vector<vvMeshActor*>::iterator i=mSurfaceCutActors.begin();
 293        i!=mSurfaceCutActors.end(); i++)
 294     delete (*i);
 295   delete [] mReducedExtent;
 296 }
 297 //------------------------------------------------------------------------------
 298
 299
 300 //------------------------------------------------------------------------------
 301 void vvSlicer::SetCurrentPosition(double x, double y, double z, int t)
 302 {
 303   mCurrent[0] = x;
 304   mCurrent[1] = y;
 305   mCurrent[2] = z;
 306   mCurrentTSlice = t;
 307 }
 308 //------------------------------------------------------------------------------
 309
 310
 311 //------------------------------------------------------------------------------
 312 void vvSlicer::SetImage(vvImage::Pointer image)
 313 {
 314   if (image->GetVTKImages().size()) {
 315     mImage = image;
 316
 317     if (!mImageReslice) {
 318       mImageReslice = vtkSmartPointer<vtkImageReslice>::New();
 319       mImageReslice->SetInterpolationModeToLinear();
 320       mImageReslice->AutoCropOutputOn();
 321       mImageReslice->SetBackgroundColor(-1000,-1000,-1000,1);
 322     }
 323     mImageReslice->SetResliceTransform(mImage->GetTransform());
 324     mImageReslice->SetInput(0, mImage->GetFirstVTKImageData());
 325     mImageReslice->UpdateInformation();
 326
 327     this->Superclass::SetInput(mImageReslice->GetOutput());
 328
 329     int extent[6];
 330     this->GetInput()->GetWholeExtent(extent);
 331
 332     // Prevent crash when reload -> change slice if outside extent
 333     if (Slice < extent[SliceOrientation*2] || Slice>=extent[SliceOrientation*2+1]) {
 334       Slice = (extent[SliceOrientation*2+1]+extent[SliceOrientation*2])/2.0;
 335     }
 336
 337     // Make sure that the required part image has been computed
 338     extent[SliceOrientation*2] = Slice;
 339     extent[SliceOrientation*2+1] = Slice;
 340     mImageReslice->GetOutput()->SetUpdateExtent(extent);
 341     mImageReslice->GetOutput()->Update();
 342
 343     this->UpdateDisplayExtent();
 344
 345     mCurrentTSlice = 0;
 346     ca->SetText(0,mFileName.c_str());
 347   }
 348 }
 349 //------------------------------------------------------------------------------
 350
 351
 352 //------------------------------------------------------------------------------
 353 void vvSlicer::SetOverlay(vvImage::Pointer overlay)
 354 {
 355   if (overlay->GetVTKImages().size()) {
 356     mOverlay = overlay;
 357
 358     if (!mOverlayReslice) {
 359       mOverlayReslice = vtkSmartPointer<vtkImageReslice>::New();
 360       mOverlayReslice->SetInterpolationModeToLinear();
 361       mOverlayReslice->AutoCropOutputOn();
 362       mOverlayReslice->SetBackgroundColor(-1000,-1000,-1000,1);
 363     }
 364     mOverlayReslice->SetResliceTransform(mOverlay->GetTransform());
 365     mOverlayReslice->SetInput(0, mOverlay->GetFirstVTKImageData());
 366
 367     if (!mOverlayMapper)
 368       mOverlayMapper = vtkSmartPointer<vtkImageMapToWindowLevelColors>::New();
 369     mOverlayMapper->SetInput(mOverlayReslice->GetOutput());
 370
 371     if (!mOverlayActor) {
 372       mOverlayActor = vtkSmartPointer<vvBlendImageActor>::New();
 373       mOverlayActor->SetInput(mOverlayMapper->GetOutput());
 374       mOverlayActor->SetPickable(0);
 375       mOverlayActor->SetVisibility(true);
 376       mOverlayActor->SetOpacity(0.5);
 377     }
 378
 379     //stupid but necessary : the Overlay need to be rendered before fusion
 380     if (mFusionActor) {
 381       this->GetRenderer()->RemoveActor(mFusionActor);
 382       this->GetRenderer()->AddActor(mOverlayActor);
 383       this->GetRenderer()->AddActor(mFusionActor);
 384     } else
 385       this->GetRenderer()->AddActor(mOverlayActor);
 386
 387     //Synchronize orientation and slice
 388     this->SetSliceOrientation(this->SliceOrientation);
 389     this->SetTSlice(mCurrentTSlice);
 390   }
 391 }
 392 //------------------------------------------------------------------------------
 393
 394
 395 //------------------------------------------------------------------------------
 396 void vvSlicer::SetFusion(vvImage::Pointer fusion)
 397 {
 398   if (fusion->GetVTKImages().size()) {
 399     mFusion = fusion;
 400
 401     if (!mFusionReslice) {
 402       mFusionReslice = vtkSmartPointer<vtkImageReslice>::New();
 403       mFusionReslice->SetInterpolationModeToLinear();
 404       mFusionReslice->AutoCropOutputOn();
 405       mFusionReslice->SetBackgroundColor(-1000,-1000,-1000,1);
 406     }
 407     mFusionReslice->SetResliceTransform(mFusion->GetTransform());
 408     mFusionReslice->SetInput(0, mFusion->GetFirstVTKImageData());
 409
 410     if (!mFusionMapper)
 411       mFusionMapper = vtkSmartPointer<vtkImageMapToWindowLevelColors>::New();
 412     mFusionMapper->SetInput(mFusionReslice->GetOutput());
 413
 414     if (!mFusionActor) {
 415       mFusionActor = vtkSmartPointer<vtkImageActor>::New();
 416       mFusionActor->SetInput(mFusionMapper->GetOutput());
 417       mFusionActor->SetPickable(0);
 418       mFusionActor->SetVisibility(true);
 419       mFusionActor->SetOpacity(0.7);
 420       this->GetRenderer()->AddActor(mFusionActor);
 421     }
 422
 423     //Synchronize orientation and slice
 424     this->SetSliceOrientation(this->SliceOrientation);
 425     this->SetTSlice(mCurrentTSlice);
 426   }
 427 }
 428 //------------------------------------------------------------------------------
 429
 430
 431 //------------------------------------------------------------------------------
 432 bool vvSlicer::GetActorVisibility(const std::string& actor_type, int overlay_index)
 433 {
 434   bool vis = false;
 435   if (actor_type == "image") {
 436     vis = this->ImageActor->GetVisibility();
 437   }
 438   else if (actor_type == "vector") {
 439     vis = this->mVFActor->GetVisibility();
 440   }
 441   else if (actor_type == "overlay") {
 442     vis = this->mOverlayActor->GetVisibility();
 443   }
 444   else if (actor_type == "fusion") {
 445     vis = this->mFusionActor->GetVisibility();
 446   }
 447   else if (actor_type == "contour")
 448     vis = this->mSurfaceCutActors[overlay_index]->GetActor()->GetVisibility();
 449
 450   return vis;
 451 }
 452 //------------------------------------------------------------------------------
 453
 454 //------------------------------------------------------------------------------
 455 void vvSlicer::SetActorVisibility(const std::string& actor_type, int overlay_index ,bool vis)
 456 {
 457   if (actor_type == "image") {
 458     this->ImageActor->SetVisibility(vis);
 459   }
 460   else if (actor_type == "vector") {
 461     this->mVFActor->SetVisibility(vis);
 462   }
 463   else if (actor_type == "overlay") {
 464     this->mOverlayActor->SetVisibility(vis);
 465   }
 466   else if (actor_type == "fusion") {
 467     this->mFusionActor->SetVisibility(vis);
 468   }
 469   else if (actor_type == "contour")
 470     this->mSurfaceCutActors[overlay_index]->GetActor()->SetVisibility(vis);
 471   UpdateDisplayExtent();
 472 }
 473 //------------------------------------------------------------------------------
 474
 475 //------------------------------------------------------------------------------
 476 void vvSlicer::SetVF(vvImage::Pointer vf)
 477 {
 478   if (vf->GetVTKImages().size()) {
 479     mVF = vf;
 480
 481     if (!mAAFilter) {
 482       mAAFilter= vtkSmartPointer<vtkAssignAttribute>::New();
 483       mVOIFilter = vtkSmartPointer<vtkExtractVOI>::New();
 484       mVOIFilter->SetSampleRate(mSubSampling,mSubSampling,mSubSampling);
 485     }
 486     mVOIFilter->SetInput(vf->GetFirstVTKImageData());
 487     mAAFilter->SetInput(mVOIFilter->GetOutput());
 488     ///This tells VTK to use the scalar (pixel) data of the image to draw the little arrows
 489     mAAFilter->Assign(vtkDataSetAttributes::SCALARS, vtkDataSetAttributes::VECTORS, vtkAssignAttribute::POINT_DATA);
 490
 491     if (!mArrow)
 492       mArrow = vtkSmartPointer<vvGlyphSource>::New();
 493     mArrow->SetGlyphTypeToSpecificArrow();
 494     mArrow->SetScale(mScale);
 495     mArrow->FilledOff();
 496
 497     // Glyph the gradient vector (with arrows)
 498     if (!mGlyphFilter)
 499       mGlyphFilter = vtkSmartPointer<vvGlyph2D>::New();
 500     mGlyphFilter->SetInput(mAAFilter->GetOutput());
 501     mGlyphFilter->SetSource(mArrow->GetOutput());
 502     mGlyphFilter->ScalingOn();
 503     mGlyphFilter->SetScaleModeToScaleByVector();
 504     mGlyphFilter->OrientOn();
 505     mGlyphFilter->SetVectorModeToUseVector();
 506     mGlyphFilter->SetColorModeToColorByVector();
 507
 508     if (!mVFColorLUT)
 509       mVFColorLUT = vtkSmartPointer<vtkLookupTable>::New();
 510
 511     double mVFColorHSV[3];
 512     vtkMath::RGBToHSV(mVFColor, mVFColorHSV);
 513     mVFColorLUT->SetHueRange(mVFColorHSV[0], mVFColorHSV[0]);
 514     mVFColorLUT->SetSaturationRange(mVFColorHSV[1],mVFColorHSV[1]);
 515     mVFColorLUT->SetValueRange(mVFColorHSV[2], mVFColorHSV[2]);
 516
 517     if (!mVFMapper)
 518       mVFMapper = vtkSmartPointer<vtkPolyDataMapper>::New();
 519     mVFMapper->SetInput(mGlyphFilter->GetOutput());
 520     mVFMapper->ImmediateModeRenderingOn();
 521     mVFMapper->SetLookupTable(mVFColorLUT);
 522
 523     if (!mVFActor)
 524       mVFActor = vtkSmartPointer<vtkActor>::New();
 525     mVFActor->SetMapper(mVFMapper);
 526     mVFActor->SetPickable(0);
 527     mVFActor->GetProperty()->SetLineWidth(mVFWidth);
 528     this->UpdateDisplayExtent();
 529     this->GetRenderer()->AddActor(mVFActor);
 530
 531     //Synchronize slice
 532     SetTSlice(mCurrentTSlice);
 533   }
 534 }
 535 //------------------------------------------------------------------------------
 536
 537
 538 //------------------------------------------------------------------------------
 539 void vvSlicer::SetLandmarks(vvLandmarks* landmarks)
 540 {
 541   mLandmarks = landmarks;
 542   if (landmarks) {
 543
 544     if (!mCross)
 545       mCross = vtkSmartPointer<vtkCursor3D>::New();
 546     mCross->SetFocalPoint(0.0,0.0,0.0);
 547     mCross->SetModelBounds(-10,10,-10,10,-10,10);
 548     mCross->AllOff();
 549     mCross->AxesOn();
 550
 551     if (!mLandGlyph)
 552       mLandGlyph = vtkSmartPointer<vtkGlyph3D>::New();
 553     mLandGlyph->SetSource(mCross->GetOutput());
 554     mLandGlyph->SetInput(landmarks->GetOutput());
 555     //mLandGlyph->SetIndexModeToScalar();
 556     mLandGlyph->SetRange(0,1);
 557     mLandGlyph->ScalingOff();
 558
 559     mLandGlyph->SetColorModeToColorByScalar();
 560
 561     if (!mClipBox)
 562       mClipBox = vtkSmartPointer<vtkBox>::New();
 563     if (!mLandClipper)
 564       mLandClipper = vtkSmartPointer<vtkClipPolyData>::New();
 565     mLandClipper->InsideOutOn();
 566     mLandClipper->SetInput(mLandGlyph->GetOutput());
 567     mLandClipper->SetClipFunction(mClipBox);
 568
 569     if (!mLandMapper)
 570       mLandMapper = vtkSmartPointer<vtkPolyDataMapper>::New();
 571     mLandMapper->SetInputConnection(mLandClipper->GetOutputPort());
 572     //mLandMapper->ScalarVisibilityOff();
 573
 574     if (!mLandActor)
 575       mLandActor = vtkSmartPointer<vtkActor>::New();
 576     mLandActor->SetMapper(mLandMapper);
 577     mLandActor->GetProperty()->SetColor(255,10,212);
 578     mLandActor->SetPickable(0);
 579     mLandActor->SetVisibility(true);
 580     this->UpdateDisplayExtent();
 581     this->GetRenderer()->AddActor(mLandActor);
 582   }
 583 }
 584 //------------------------------------------------------------------------------
 585
 586 //------------------------------------------------------------------------------
 587 //FIXME: this function leaks memory, we should fix it someday :)
 588 void vvSlicer::RemoveActor(const std::string& actor_type, int overlay_index)
 589 {
 590   if (actor_type == "vector") {
 591     Renderer->RemoveActor(mVFActor);
 592     mGlyphFilter=NULL;
 593     mVF = NULL;
 594     mArrow = NULL;
 595     mAAFilter=NULL;
 596     mVOIFilter = NULL;
 597     mVFMapper = NULL;
 598     mVFActor = NULL;
 599   }
 600   if (actor_type == "overlay") {
 601     Renderer->RemoveActor(mOverlayActor);
 602     mOverlay = NULL;
 603     mOverlayActor = NULL;
 604     mOverlayMapper = NULL;
 605   }
 606   if (actor_type == "fusion") {
 607     Renderer->RemoveActor(mFusionActor);
 608     mFusion = NULL;
 609     mFusionActor = NULL;
 610     mFusionMapper = NULL;
 611   }
 612   if (actor_type == "contour") {
 613     Renderer->RemoveActor(this->mSurfaceCutActors[overlay_index]->GetActor());
 614     mSurfaceCutActors.erase(mSurfaceCutActors.begin()+overlay_index);
 615   }
 616 }
 617 //------------------------------------------------------------------------------
 618
 619
 620 //------------------------------------------------------------------------------
 621 void vvSlicer::SetVFSubSampling(int sub)
 622 {
 623   if (mVOIFilter) {
 624     mVOIFilter->SetSampleRate(mSubSampling,mSubSampling,mSubSampling);
 625     mSubSampling = sub;
 626   }
 627   UpdateDisplayExtent();
 628   Render();
 629 }
 630 //------------------------------------------------------------------------------
 631
 632
 633 //------------------------------------------------------------------------------
 634 void vvSlicer::SetVFScale(int scale)
 635 {
 636   mScale = scale;
 637   if (mArrow)
 638     mArrow->SetScale(mScale);
 639   UpdateDisplayExtent();
 640   Render();
 641 }
 642 //------------------------------------------------------------------------------
 643
 644 //------------------------------------------------------------------------------
 645 void vvSlicer::SetVFWidth(int width)
 646 {
 647   mVFWidth = width;
 648   if (mVFActor)
 649     mVFActor->GetProperty()->SetLineWidth(mVFWidth);
 650   UpdateDisplayExtent();
 651   Render();
 652 }
 653 //------------------------------------------------------------------------------
 654
 655
 656 //------------------------------------------------------------------------------
 657 void vvSlicer::SetVFLog(int log)
 658 {
 659   mVFLog = log;
 660   if (mGlyphFilter) {
 661     mGlyphFilter->SetUseLog(mVFLog);
 662     mGlyphFilter->Modified();
 663   }
 664   UpdateDisplayExtent();
 665   Render();
 666 }
 667 //------------------------------------------------------------------------------
 668
 669
 670 //------------------------------------------------------------------------------
 671 void vvSlicer::SetTSlice(int t)
 672 {
 673   if (t < 0)
 674     t = 0;
 675   else if ((unsigned int)t >= mImage->GetVTKImages().size())
 676     t = mImage->GetVTKImages().size() -1;
 677
 678   if (mCurrentTSlice == t) return;
 679
 680   mCurrentTSlice = t;
 681   mImageReslice->SetInput( mImage->GetVTKImages()[mCurrentTSlice] );
 682   if (mVF && mVFActor->GetVisibility()) {
 683     if (mVF->GetVTKImages().size() > (unsigned int)mCurrentTSlice)
 684       mVOIFilter->SetInput(mVF->GetVTKImages()[mCurrentTSlice]);
 685   }
 686   if (mOverlay && mOverlayActor->GetVisibility()) {
 687     if (mOverlay->GetVTKImages().size() > (unsigned int)mCurrentTSlice)
 688       mOverlayReslice->SetInput( mOverlay->GetVTKImages()[mCurrentTSlice] );
 689   }
 690   if (mFusion && mFusionActor->GetVisibility()) {
 691     if (mFusion->GetVTKImages().size() > (unsigned int)mCurrentTSlice)
 692       mFusionReslice->SetInput( mFusion->GetVTKImages()[mCurrentTSlice]);
 693   }
 694   if (mSurfaceCutActors.size() > 0)
 695     for (std::vector<vvMeshActor*>::iterator i=mSurfaceCutActors.begin();
 696          i!=mSurfaceCutActors.end(); i++)
 697       (*i)->SetTimeSlice(mCurrentTSlice);
 698   UpdateDisplayExtent();
 699 }
 700 //------------------------------------------------------------------------------
 701
 702
 703 //------------------------------------------------------------------------------
 704 int vvSlicer::GetTSlice()
 705 {
 706   return mCurrentTSlice;
 707 }
 708 //------------------------------------------------------------------------------
 709
 710 //------------------------------------------------------------------------------
 711 void vvSlicer::SetSliceOrientation(int orientation)
 712 {
 713   //if 2D image, force to watch in Axial View
 714   int extent[6];
 715   this->GetInput()->GetWholeExtent(extent);
 716   if (extent[5]-extent[4] <= 2)
 717     orientation = vtkImageViewer2::SLICE_ORIENTATION_XY;
 718
 719   if (orientation < vtkImageViewer2::SLICE_ORIENTATION_YZ ||
 720       orientation > vtkImageViewer2::SLICE_ORIENTATION_XY) {
 721     vtkErrorMacro("Error - invalid slice orientation " << orientation);
 722     return;
 723   }
 724
 725   this->SliceOrientation = orientation;
 726
 727   if(mFusion)
 728     AdjustResliceToSliceOrientation(mFusionReslice);
 729
 730   if(mOverlay)
 731     AdjustResliceToSliceOrientation(mOverlayReslice);
 732
 733   // Update the viewer
 734   int *range = this->GetSliceRange();
 735   if (range)
 736     this->Slice = static_cast<int>((range[0] + range[1]) * 0.5);
 737
 738   // Go to current cursor position
 739   // double* cursorPos = GetCursorPosition();
 740   // DDV(cursorPos, 3);
 741   // SetCurrentPosition(cursorPos[0],cursorPos[1],cursorPos[2],cursorPos[3]);
 742
 743   this->UpdateOrientation();
 744   this->UpdateDisplayExtent();
 745
 746   if (this->Renderer && this->GetInput()) {
 747     double scale = this->Renderer->GetActiveCamera()->GetParallelScale();
 748     this->Renderer->ResetCamera();
 749     this->Renderer->GetActiveCamera()->SetParallelScale(scale);
 750   }
 751
 752   SetContourSlice();
 753 }
 754 //----------------------------------------------------------------------------
 755
 756 //------------------------------------------------------------------------------
 757 // This function ensures that we sample the slices of a vtkImageReslice filter
 758 // in the direction of the slicer (SliceOrientation) similarly as mImageReslice.
 759 // In other words, we change the grid of the reslice in the same way as the grid
 760 // of the displayed image in the slicing direction.
 761 void vvSlicer::AdjustResliceToSliceOrientation(vtkImageReslice *reslice)
 762 {
 763   // Reset autocrop
 764   double origin[3] = {VTK_DOUBLE_MAX, VTK_DOUBLE_MAX, VTK_DOUBLE_MAX};
 765   double spacing[3] = {VTK_DOUBLE_MAX, VTK_DOUBLE_MAX, VTK_DOUBLE_MAX};
 766   reslice->SetOutputOrigin(origin);
 767   reslice->SetOutputSpacing(spacing);
 768   reslice->GetOutput()->UpdateInformation();
 769   reslice->GetOutput()->GetOrigin(origin);
 770   reslice->GetOutput()->GetSpacing(spacing);
 771
 772   // Use similar spacing as the image in the direction SliceOrientation
 773   spacing[this->SliceOrientation] = mImageReslice->GetOutput()->GetSpacing()[this->SliceOrientation];
 774
 775   // Modify origin to be on the image grid in the direction SliceOrientation in 3 steps
 776   // Step 1: from world coordinates to image coordinates
 777   origin[this->SliceOrientation] -= mImageReslice->GetOutput()->GetOrigin()[this->SliceOrientation];
 778   origin[this->SliceOrientation] /= mImageReslice->GetOutput()->GetSpacing()[this->SliceOrientation];
 779   // Step 2: round to superior grid positionInc
 780   origin[this->SliceOrientation] = itk::Math::Ceil<double>(origin[this->SliceOrientation]);
 781   // Step 3: back to world coordinates
 782   origin[this->SliceOrientation] *= mImageReslice->GetOutput()->GetSpacing()[this->SliceOrientation];
 783   origin[this->SliceOrientation] += mImageReslice->GetOutput()->GetOrigin()[this->SliceOrientation];
 784
 785   // Set new spacing and origin
 786   reslice->SetOutputOrigin(origin);
 787   reslice->SetOutputSpacing(spacing);
 788   reslice->UpdateInformation();
 789 }
 790 //------------------------------------------------------------------------------
 791
 792 //----------------------------------------------------------------------------
 793 int * vvSlicer::GetExtent(){
 794   int *w_ext;
 795   if (mUseReducedExtent) {
 796     w_ext = mReducedExtent;
 797   } else w_ext = GetInput()->GetWholeExtent();
 798   return w_ext;
 799 }
 800 //----------------------------------------------------------------------------
 801
 802
 803 //----------------------------------------------------------------------------
 804 int vvSlicer::GetOrientation()
 805 {
 806   return this->SliceOrientation;
 807 }
 808 //----------------------------------------------------------------------------
 809
 810
 811 //----------------------------------------------------------------------------
 812 void vvSlicer::UpdateDisplayExtent()
 813 {
 814   vtkImageData *input = this->GetInput();
 815   if (!input || !this->ImageActor) {
 816     return;
 817   }
 818   input->UpdateInformation();
 819
 820   // Local copy of extent
 821   int w_ext[6];
 822   copyExtent(GetExtent(), w_ext);
 823   // Set slice value
 824   w_ext[ this->SliceOrientation*2   ] = this->Slice;
 825   w_ext[ this->SliceOrientation*2+1 ] = this->Slice;
 826
 827   // Image actor
 828   this->ImageActor->SetDisplayExtent(w_ext);
 829
 830   // Overlay image actor
 831   if (mOverlay && mOverlayActor->GetVisibility()) {
 832     int overExtent[6];
 833     mOverlayReslice->GetOutput()->UpdateInformation();
 834     this->ConvertImageToImageDisplayExtent(input, w_ext, mOverlayReslice->GetOutput(), overExtent);
 835     ClipDisplayedExtent(overExtent, mOverlayMapper->GetInput()->GetWholeExtent());
 836     mOverlayActor->SetDisplayExtent( overExtent );
 837   }
 838
 839   // Fusion image actor
 840   if (mFusion && mFusionActor->GetVisibility()) {
 841     int fusExtent[6];
 842     mFusionReslice->GetOutput()->UpdateInformation();
 843     this->ConvertImageToImageDisplayExtent(input, w_ext, mFusionReslice->GetOutput(), fusExtent);
 844     ClipDisplayedExtent(fusExtent, mFusionMapper->GetInput()->GetWholeExtent());
 845     mFusionActor->SetDisplayExtent(fusExtent);
 846   }
 847
 848   // Vector field actor
 849   double* camera = Renderer->GetActiveCamera()->GetPosition();
 850   double* image_bounds = ImageActor->GetBounds();
 851   double position[3] = {0, 0, 0};
 852   position[this->SliceOrientation] = image_bounds[this->SliceOrientation*2];
 853
 854   //print_vector<double, 6>("camera", camera);
 855   //print_vector<double, 6>("image_bounds", image_bounds);
 856   //print_vector<double, 3>("position", position);
 857
 858   // find where to place the VF actor. to deal with
 859   // z-buffer issues, the VF is placed right in front of the image,
 860   // subject to a small offset. the position actually depends on the
 861   // the location of the camera relative to the image.
 862   double offset = 1;
 863   if (camera[this->SliceOrientation] < image_bounds[this->SliceOrientation*2])
 864     offset = -1;
 865
 866   if (mVF && mVFActor->GetVisibility()) {
 867     int vfExtent[6];
 868     mVF->GetVTKImages()[0]->UpdateInformation();
 869     this->ConvertImageToImageDisplayExtent(input, w_ext, mVF->GetVTKImages()[0], vfExtent);
 870     ClipDisplayedExtent(vfExtent, mVOIFilter->GetInput()->GetWholeExtent());
 871     mVOIFilter->SetVOI(vfExtent);
 872     int orientation[3] = {1,1,1};
 873     orientation[this->SliceOrientation] = 0;
 874     mGlyphFilter->SetOrientation(orientation[0], orientation[1], orientation[2]);
 875     mVFMapper->Update();
 876
 877     position[this->SliceOrientation] += offset;
 878     mVFActor->SetPosition(position);
 879   }
 880
 881   // Landmarks actor
 882   if (mLandActor) {
 883     if (mClipBox) {
 884       double bounds [6];
 885       for(unsigned int i=0; i<6; i++)
 886         bounds[i] = ImageActor->GetBounds()[i];
 887       bounds[ this->SliceOrientation*2   ] = ImageActor->GetBounds()[ this->SliceOrientation*2  ]-fabs(this->GetInput()->GetSpacing()[this->SliceOrientation]);
 888       bounds[ this->SliceOrientation*2+1 ] = ImageActor->GetBounds()[ this->SliceOrientation*2+1 ]+fabs(this->GetInput()->GetSpacing()[this->SliceOrientation]);
 889       mClipBox->SetBounds(bounds);
 890       UpdateLandmarks();
 891     }
 892
 893     position[this->SliceOrientation] = offset;
 894     mLandActor->SetPosition(position);
 895   }
 896
 897   // Figure out the correct clipping range
 898   if (this->Renderer) {
 899     if (this->InteractorStyle &&
 900         this->InteractorStyle->GetAutoAdjustCameraClippingRange()) {
 901       this->Renderer->ResetCameraClippingRange();
 902     } else {
 903       vtkCamera *cam = this->Renderer->GetActiveCamera();
 904       if (cam) {
 905         double bounds[6];
 906         this->ImageActor->GetBounds(bounds);
 907         double spos = (double)bounds[this->SliceOrientation * 2];
 908         double cpos = (double)cam->GetPosition()[this->SliceOrientation];
 909         double range = fabs(spos - cpos);
 910         double *spacing = input->GetSpacing();
 911         double avg_spacing =
 912           ((double)spacing[0] + (double)spacing[1] + (double)spacing[2]) / 3.0;
 913         cam->SetClippingRange(range - avg_spacing * 3.0, range + avg_spacing * 3.0);
 914       }
 915     }
 916   }
 917
 918 }
 919 //----------------------------------------------------------------------------
 920
 921 //----------------------------------------------------------------------------
 922 void vvSlicer::ConvertImageToImageDisplayExtent(vtkImageData *sourceImage, const int sourceExtent[6],
 923                                                 vtkImageData *targetImage, int targetExtent[6])
 924 {
 925   double dExtents[6];
 926   for(unsigned int i=0; i<6; i++) {
 927     // From source voxel coordinates to world coordinates
 928     dExtents[i] = sourceImage->GetOrigin()[i/2] + sourceImage->GetSpacing()[i/2] * sourceExtent[i];
 929
 930     // From world coordinates to floating point target voxel coordinates
 931     dExtents[i] = (dExtents[i]- targetImage->GetOrigin()[i/2]) / targetImage->GetSpacing()[i/2];
 932
 933     // Round to nearest
 934     targetExtent[i] = itk::Math::Round<double>(dExtents[i]);
 935   }
 936 }
 937 //----------------------------------------------------------------------------
 938
 939 //----------------------------------------------------------------------------
 940 void vvSlicer::ClipDisplayedExtent(int extent[6], int refExtent[6])
 941 {
 942   bool out = false;
 943   int maxBound = 6;
 944
 945   //2D overlay on 3D image specific case
 946   if (refExtent[4] == refExtent[5]) {
 947     maxBound = 4;
 948     extent[4] = refExtent[4];
 949     extent[5] = refExtent[5];
 950   }
 951
 952   for (int i = 0; i < maxBound; i = i+2) {
 953     //if we are totally outside the image
 954     if ( extent[i] > refExtent[i+1] || extent[i+1] < refExtent[i] ) {
 955       out = true;
 956       break;
 957     }
 958     //crop to the limit of the image
 959     extent[i] = (extent[i] > refExtent[i]) ? extent[i] : refExtent[i];
 960     extent[i] = (extent[i] < refExtent[i+1]) ? extent[i] : refExtent[i+1];
 961     extent[i+1] = (extent[i+1] > refExtent[i]) ? extent[i+1] : refExtent[i];
 962     extent[i+1] = (extent[i+1] < refExtent[i+1]) ? extent[i+1] : refExtent[i+1];
 963   }
 964   if (out)
 965     for (int i = 0; i < maxBound; i = i+2) {
 966       extent[i] = refExtent[i];
 967       extent[i+1] = refExtent[i];
 968     }
 969 }
 970 //----------------------------------------------------------------------------
 971
 972
 973 //----------------------------------------------------------------------------
 974 void vvSlicer::UpdateOrientation()
 975 {
 976   // Set the camera position
 977   vtkCamera *cam = this->Renderer ? this->Renderer->GetActiveCamera() : NULL;
 978   if (cam) {
 979     switch (this->SliceOrientation) {
 980     case vtkImageViewer2::SLICE_ORIENTATION_XY:
 981       cam->SetFocalPoint(0,0,0);
 982       cam->SetPosition(0,0,-1); // -1 if medical ?
 983       cam->SetViewUp(0,-1,0);
 984       break;
 985
 986     case vtkImageViewer2::SLICE_ORIENTATION_XZ:
 987       cam->SetFocalPoint(0,0,0);
 988       cam->SetPosition(0,-1,0); // 1 if medical ?
 989       cam->SetViewUp(0,0,1);
 990       break;
 991
 992     case vtkImageViewer2::SLICE_ORIENTATION_YZ:
 993       cam->SetFocalPoint(0,0,0);
 994       cam->SetPosition(-1,0,0); // -1 if medical ?
 995       cam->SetViewUp(0,0,1);
 996       break;
 997     }
 998   }
 999 }
1000 //----------------------------------------------------------------------------
1001
1002
1003 //----------------------------------------------------------------------------
1004 void vvSlicer::SetOpacity(double s)
1005 {
1006   this->GetImageActor()->SetOpacity(s);
1007 }
1008 //----------------------------------------------------------------------------
1009
1010
1011 //----------------------------------------------------------------------------
1012 void vvSlicer::SetRenderWindow(int orientation, vtkRenderWindow * rw)
1013 {
1014   this->Superclass::SetRenderWindow(rw);
1015   this->SetupInteractor(rw->GetInteractor());
1016   ca->SetImageActor(this->GetImageActor());
1017   ca->SetWindowLevel(this->GetWindowLevel());
1018   ca->SetText(2, "<slice>");
1019   ca->SetText(3, "<window>\n<level>");
1020
1021   double bounds[6];
1022   double max = 65000;
1023
1024   bounds[0] = -max;
1025   bounds[1] = max;
1026   bounds[2] = -max;
1027   bounds[3] = max;
1028   bounds[4] = -max;
1029   bounds[5] = max;
1030
1031   crossCursor->SetModelBounds(bounds);
1032   this->GetRenderer()->AddActor(pdmA);
1033   this->GetRenderer()->AddActor(ca);
1034   this->GetRenderer()->ResetCamera();
1035
1036   //this is just a mapping between the labeling of the orientations presented to the user and
1037   //the one used by vtk
1038   SetSliceOrientation(2-(orientation%3));
1039   ResetCamera();
1040 }
1041 //----------------------------------------------------------------------------
1042
1043
1044 //----------------------------------------------------------------------------
1045 void vvSlicer::ResetCamera()
1046 {
1047   this->GetRenderer()->ResetCamera();
1048 }
1049 //----------------------------------------------------------------------------
1050
1051
1052 //----------------------------------------------------------------------------
1053 void vvSlicer::SetDisplayMode(bool i)
1054 {
1055   this->GetRenderer()->SetDraw(i);
1056   if (i)
1057     UpdateDisplayExtent();
1058 }
1059 //----------------------------------------------------------------------------
1060
1061
1062 //----------------------------------------------------------------------------
1063 void vvSlicer::FlipHorizontalView()
1064 {
1065   vtkCamera *cam = this->Renderer ? this->Renderer->GetActiveCamera() : NULL;
1066   if (cam) {
1067     double *position = cam->GetPosition();
1068     double factor[3] = {1, 1, 1};
1069     factor[this->SliceOrientation] = -1;
1070     cam->SetPosition(factor[0]*position[0],factor[1]*position[1],factor[2]*position[2]);
1071
1072 /*    switch (this->SliceOrientation) {
1073     case vtkImageViewer2::SLICE_ORIENTATION_XY:
1074       cam->SetPosition(position[0],position[1],-position[2]);
1075       break;
1076
1077     case vtkImageViewer2::SLICE_ORIENTATION_XZ:
1078       cam->SetPosition(position[0],-position[1],position[2]);
1079       break;
1080
1081     case vtkImageViewer2::SLICE_ORIENTATION_YZ:
1082       cam->SetPosition(-position[0],position[1],position[2]);
1083       break;
1084     }*/
1085
1086     this->Renderer->ResetCameraClippingRange();
1087     this->UpdateDisplayExtent();
1088   }
1089 }
1090 //----------------------------------------------------------------------------
1091
1092
1093 //----------------------------------------------------------------------------
1094 void vvSlicer::FlipVerticalView()
1095 {
1096   vtkCamera *cam = this->Renderer ? this->Renderer->GetActiveCamera() : NULL;
1097   if (cam) {
1098     FlipHorizontalView();
1099     double *viewup = cam->GetViewUp();
1100     cam->SetViewUp(-viewup[0],-viewup[1],-viewup[2]);
1101     this->UpdateDisplayExtent();
1102   }
1103 }
1104 //----------------------------------------------------------------------------
1105
1106
1107 //----------------------------------------------------------------------------
1108 void vvSlicer::SetColorWindow(double window)
1109 {
1110   vtkLookupTable* LUT = static_cast<vtkLookupTable*>(this->GetWindowLevel()->GetLookupTable());
1111   if ( LUT ) {
1112     double level = this->GetWindowLevel()->GetLevel();
1113     LUT->SetTableRange(level-fabs(window)/4,level+fabs(window)/4);
1114     LUT->Build();
1115   }
1116   this->vtkImageViewer2::SetColorWindow(window);
1117 }
1118 //----------------------------------------------------------------------------
1119
1120
1121 //----------------------------------------------------------------------------
1122 void vvSlicer::SetColorLevel(double level)
1123 {
1124   vtkLookupTable* LUT = static_cast<vtkLookupTable*>(this->GetWindowLevel()->GetLookupTable());
1125   if ( LUT ) {
1126     double window = this->GetWindowLevel()->GetWindow();
1127     LUT->SetTableRange(level-fabs(window)/4,level+fabs(window)/4);
1128     LUT->Build();
1129   }
1130   this->vtkImageViewer2::SetColorLevel(level);
1131 }
1132 //----------------------------------------------------------------------------
1133
1134 //----------------------------------------------------------------------------
1135 // Returns the min an the max value in a 41x41 region around the mouse pointer
1136 void vvSlicer::GetExtremasAroundMousePointer(double & min, double & max)
1137 {
1138   //Get mouse pointer position in view coordinates
1139   double fLocalExtents[6];
1140   for(int i=0; i<3; i++) {
1141     fLocalExtents[i*2  ] = mCurrent[i];
1142     fLocalExtents[i*2+1] = mCurrent[i];
1143   }
1144   this->Renderer->WorldToView(fLocalExtents[0], fLocalExtents[2], fLocalExtents[4]);
1145   this->Renderer->WorldToView(fLocalExtents[1], fLocalExtents[3], fLocalExtents[5]);
1146   for(int i=0; i<3; i++) {
1147     if (i!=SliceOrientation) { //SR: assumes that SliceOrientation is valid in ViewCoordinates (???)
1148       fLocalExtents[i*2  ] -= 0.2;
1149       fLocalExtents[i*2+1] += 0.2;
1150     }
1151   }
1152   this->Renderer->ViewToWorld(fLocalExtents[0], fLocalExtents[2], fLocalExtents[4]);
1153   this->Renderer->ViewToWorld(fLocalExtents[1], fLocalExtents[3], fLocalExtents[5]);
1154
1155   //Convert to image pixel coordinates (rounded)
1156   int iLocalExtents[6];
1157   for(int i=0; i<3; i++) {
1158     fLocalExtents[i*2  ] = (fLocalExtents[i*2  ] - this->GetInput()->GetOrigin()[i])/this->GetInput()->GetSpacing()[i];
1159     fLocalExtents[i*2+1] = (fLocalExtents[i*2+1] - this->GetInput()->GetOrigin()[i])/this->GetInput()->GetSpacing()[i];
1160
1161     iLocalExtents[i*2  ] = lrint(fLocalExtents[i*2  ]);
1162     iLocalExtents[i*2+1] = lrint(fLocalExtents[i*2+1]);
1163
1164     if(iLocalExtents[i*2  ]>iLocalExtents[i*2+1])
1165       std::swap(iLocalExtents[i*2], iLocalExtents[i*2+1]);
1166   }
1167
1168   vtkSmartPointer<vtkExtractVOI> voiFilter = vtkSmartPointer<vtkExtractVOI>::New();
1169   voiFilter->SetInput(this->GetInput());
1170   voiFilter->SetVOI(iLocalExtents);
1171   voiFilter->Update();
1172   if (!voiFilter->GetOutput()->GetNumberOfPoints()) {
1173     min = 0;
1174     max = 0;
1175     return;
1176   }
1177
1178   vtkSmartPointer<vtkImageAccumulate> accFilter = vtkSmartPointer<vtkImageAccumulate>::New();
1179   accFilter->SetInput(voiFilter->GetOutput());
1180   accFilter->Update();
1181
1182   min = *(accFilter->GetMin());
1183   max = *(accFilter->GetMax());
1184 }
1185 //----------------------------------------------------------------------------
1186
1187 //----------------------------------------------------------------------------
1188 double vvSlicer::GetScalarComponentAsDouble(vtkImageData *image, double X, double Y, double Z, int &ix, int &iy, int &iz, int component)
1189 {
1190   ix = lrint(X);
1191   iy = lrint(Y);
1192   iz = lrint(Z);
1193   if (ix < image->GetWholeExtent()[0] ||
1194       ix > image->GetWholeExtent()[1] ||
1195       iy < image->GetWholeExtent()[2] ||
1196       iy > image->GetWholeExtent()[3] ||
1197       iz < image->GetWholeExtent()[4] ||
1198       iz > image->GetWholeExtent()[5] )
1199     return std::numeric_limits<double>::quiet_NaN();
1200
1201   image->SetUpdateExtent(ix, ix, iy, iy, iz, iz);
1202   image->Update();
1203   return image->GetScalarComponentAsDouble(ix, iy, iz, component);
1204 }
1205 //----------------------------------------------------------------------------
1206
1207 //----------------------------------------------------------------------------
1208 void vvSlicer::Render()
1209 {
1210   if (this->GetWindowLevel()->GetLookupTable() && !this->mOverlay && !this->mFusion) {
1211     legend->SetLookupTable(this->GetWindowLevel()->GetLookupTable());
1212     legend->SetVisibility(1);
1213   } else legend->SetVisibility(0);
1214
1215   if (ca->GetVisibility()) {
1216     std::stringstream worldPos;
1217     double X = (mCurrent[0] - this->GetInput()->GetOrigin()[0])/this->GetInput()->GetSpacing()[0];
1218     double Y = (mCurrent[1] - this->GetInput()->GetOrigin()[1])/this->GetInput()->GetSpacing()[1];
1219     double Z = (mCurrent[2] - this->GetInput()->GetOrigin()[2])/this->GetInput()->GetSpacing()[2];
1220
1221 //     if (X < this->GetInput()->GetWholeExtent()[0]) X = this->GetInput()->GetWholeExtent()[0];
1222 //     else if (X > this->GetInput()->GetWholeExtent()[1]) X = this->GetInput()->GetWholeExtent()[1];
1223 //     if (Y < this->GetInput()->GetWholeExtent()[2]) Y = this->GetInput()->GetWholeExtent()[2];
1224 //     else if (Y > this->GetInput()->GetWholeExtent()[3]) Y = this->GetInput()->GetWholeExtent()[3];
1225 //     if (Z < this->GetInput()->GetWholeExtent()[4]) Z = this->GetInput()->GetWholeExtent()[4];
1226 //     else if (Z > this->GetInput()->GetWholeExtent()[5]) Z = this->GetInput()->GetWholeExtent()[5];
1227
1228     if (X >= this->GetInput()->GetWholeExtent()[0] &&
1229         X <= this->GetInput()->GetWholeExtent()[1] &&
1230         Y >= this->GetInput()->GetWholeExtent()[2] &&
1231         Y <= this->GetInput()->GetWholeExtent()[3] &&
1232         Z >= this->GetInput()->GetWholeExtent()[4] &&
1233         Z <= this->GetInput()->GetWholeExtent()[5]) {
1234
1235
1236       int ix, iy, iz;
1237       double value = this->GetScalarComponentAsDouble(this->GetInput(), X, Y, Z, ix, iy, iz);
1238
1239       worldPos << "data value : " << value << std::endl;
1240       worldPos << "mm : " << lrint(mCurrent[0]) << ' '
1241                           << lrint(mCurrent[1]) << ' '
1242                           << lrint(mCurrent[2]) << ' '
1243                           << mCurrentTSlice
1244                           << std::endl;
1245       worldPos << "pixel : " << ix << ' '
1246                              << iy << ' '
1247                              << iz << ' '
1248                              << mCurrentTSlice
1249                              << std::endl;
1250     }
1251     ca->SetText(1,worldPos.str().c_str());
1252   }
1253
1254   if (pdmA->GetVisibility()) {
1255     double x = mCursor[0];
1256     double y = mCursor[1];
1257     double z = mCursor[2];
1258     double xCursor = (x - this->GetInput()->GetOrigin()[0])/this->GetInput()->GetSpacing()[0];
1259     double yCursor = (y - this->GetInput()->GetOrigin()[1])/this->GetInput()->GetSpacing()[1];
1260     double zCursor = (z - this->GetInput()->GetOrigin()[2])/this->GetInput()->GetSpacing()[2];
1261
1262     if (xCursor >= this->GetImageActor()->GetDisplayExtent()[0] &&
1263         xCursor < this->GetImageActor()->GetDisplayExtent()[1]+1 &&
1264         yCursor >= this->GetImageActor()->GetDisplayExtent()[2] &&
1265         yCursor < this->GetImageActor()->GetDisplayExtent()[3]+1 &&
1266         zCursor >= this->GetImageActor()->GetDisplayExtent()[4] &&
1267         zCursor < this->GetImageActor()->GetDisplayExtent()[5]+1 ) {
1268       vtkRenderer * renderer = this->Renderer;
1269
1270       renderer->WorldToView(x,y,z);
1271       renderer->ViewToNormalizedViewport(x,y,z);
1272       renderer->NormalizedViewportToViewport(x,y);
1273       renderer->ViewportToNormalizedDisplay(x,y);
1274       renderer->NormalizedDisplayToDisplay(x,y);
1275       crossCursor->SetFocalPoint(x,y,z);
1276     } else
1277       crossCursor->SetFocalPoint(-1,-1,z);
1278   }
1279
1280
1281   if (mOverlay && mOverlayActor->GetVisibility()) {
1282     mOverlayMapper->SetWindow(this->GetColorWindow());
1283     mOverlayMapper->SetLevel(this->GetColorLevel());
1284     mOverlayMapper->GetOutput()->SetUpdateExtent(mOverlayActor->GetDisplayExtent());
1285     mOverlayMapper->GetOutput()->Update();
1286     mOverlayMapper->Update();
1287   }
1288   if (mLandMapper)
1289     UpdateLandmarks();
1290
1291   this->GetRenderWindow()->Render();
1292 }
1293 //----------------------------------------------------------------------------
1294
1295
1296 //----------------------------------------------------------------------------
1297 void vvSlicer::UpdateCursorPosition()
1298 {
1299   if (this->GetImageActor()->GetVisibility()) {
1300     pdmA->SetVisibility(true);
1301     mCursor[0] = mCurrent[0];
1302     mCursor[1] = mCurrent[1];
1303     mCursor[2] = mCurrent[2];
1304     mCursor[3] = mCurrentTSlice;
1305   }
1306 }
1307 //----------------------------------------------------------------------------
1308
1309
1310 //----------------------------------------------------------------------------
1311 void vvSlicer::UpdateLandmarks()
1312 {
1313   vtkPolyData *pd = static_cast<vtkPolyData*>(mLandClipper->GetInput());
1314   if (pd->GetPoints()) {
1315     mLandGlyph->SetRange(0,1);
1316     mLandGlyph->Modified();
1317     mLandGlyph->Update();
1318
1319     mClipBox->Modified();
1320     mLandClipper->Update();
1321     mLandMapper->Update();
1322   }
1323
1324 }
1325 //----------------------------------------------------------------------------
1326
1327
1328 //----------------------------------------------------------------------------
1329 void vvSlicer::SetSlice(int slice)
1330 {
1331   int *range = this->GetSliceRange();
1332   if (range) {
1333     if (slice < range[0]) {
1334       slice = range[0];
1335     } else if (slice > range[1]) {
1336       slice = range[1];
1337     }
1338   }
1339
1340   if (this->Slice == slice) {
1341     return;
1342   }
1343
1344   this->Slice = slice;
1345   SetContourSlice();
1346   this->Modified();
1347   this->UpdateDisplayExtent();
1348
1349   // Seems to work without this line
1350   //this->Render();
1351 }
1352 //----------------------------------------------------------------------------
1353
1354
1355 //----------------------------------------------------------------------------
1356 void vvSlicer::SetContourSlice()
1357 {
1358   if (mSurfaceCutActors.size() > 0)
1359     for (std::vector<vvMeshActor*>::iterator i=mSurfaceCutActors.begin();
1360          i!=mSurfaceCutActors.end(); i++) {
1361
1362       (*i)->SetSlicingOrientation(this->SliceOrientation);
1363       (*i)->SetCutSlice((this->Slice)*this->GetImage()->GetSpacing()[this->SliceOrientation]+
1364                         this->GetImage()->GetOrigin()[this->SliceOrientation]);
1365     }
1366 }
1367 //----------------------------------------------------------------------------
1368
1369
1370 //----------------------------------------------------------------------------
1371 void vvSlicer::ForceUpdateDisplayExtent()
1372 {
1373   this->UpdateDisplayExtent();
1374 }
1375 //----------------------------------------------------------------------------
1376
1377
1378 //----------------------------------------------------------------------------
1379 int* vvSlicer::GetDisplayExtent()
1380 {
1381   return this->GetImageActor()->GetDisplayExtent();
1382 }
1383 //----------------------------------------------------------------------------
1384
1385
1386 //----------------------------------------------------------------------------
1387 void vvSlicer::PrintSelf(ostream& os, vtkIndent indent)
1388 {
1389   this->Superclass::PrintSelf(os, indent);
1390 }
1391 //----------------------------------------------------------------------------
1392
1393 //----------------------------------------------------------------------------
1394 void vvSlicer::SetVFColor(double r, double g, double b)
1395 {
1396   double mVFColorHSV[3];
1397   mVFColor[0] = r;
1398   mVFColor[1] = g;
1399   mVFColor[2] = b;
1400
1401   vtkMath::RGBToHSV(mVFColor, mVFColorHSV);
1402   mVFColorLUT->SetHueRange(mVFColorHSV[0], mVFColorHSV[0]);
1403   mVFColorLUT->SetSaturationRange(mVFColorHSV[1],mVFColorHSV[1]);
1404   mVFColorLUT->SetValueRange(mVFColorHSV[2], mVFColorHSV[2]);
1405
1406   this->Render();
1407 }
1408