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
  73 //------------------------------------------------------------------------------
  74 vvSlicer::vvSlicer()
  75 {
  76   this->UnInstallPipeline();
  77   mImage = NULL;
  78   mCurrentTSlice = 0;
  79   mUseReducedExtent = false;
  80
  81   mCurrent[0] = -VTK_DOUBLE_MAX;
  82   mCurrent[1] = -VTK_DOUBLE_MAX;
  83   mCurrent[2] = -VTK_DOUBLE_MAX;
  84
  85   mCursor[0] = -VTK_DOUBLE_MAX;
  86   mCursor[1] = -VTK_DOUBLE_MAX;
  87   mCursor[2] = -VTK_DOUBLE_MAX;
  88   mCursor[3] = -VTK_DOUBLE_MAX;
  89
  90   mSubSampling = 5;
  91   mScale = 1;
  92   mVFLog = 0;
  93   mVFWidth = 1;
  94   mVFColor[0] = 0;
  95   mVFColor[1] = 1;
  96   mVFColor[2] = 0;
  97
  98   std::string text = "F1 = sagital; F2 = coronal; F3 = axial\n";
  99   text += "F5 = horizontal flip; F6 = vertical flip\n\n";
 100   text += "0,1,2,3,4,5 : preset windowing\n";
 101   text += "6,7,8,9 : preset colormap\n";
 102   text += "z : local windowing\n";
 103   text += "r : reset view\n";
 104   text += "l : reload image\n";
 105   text += "f : fly to mouse position\n";
 106   text += "g : go to cross hair position\n\n";
 107   text += "Up,down : change slice\n";
 108   text += "Left,right : change tenporal slice\n\n";
 109   text += "Scrollbar (or w/x) : zoom in/out\n";
 110   text += "left button : synchronize all views\n";
 111   text += "middle button : grab image\n";
 112   text += "right button : change windowing\n";
 113
 114   crossCursor = vtkSmartPointer<vtkCursor2D>::New();
 115   crossCursor->AllOff();
 116   crossCursor->AxesOn();
 117   crossCursor->SetTranslationMode(1);
 118   crossCursor->SetRadius(2);
 119
 120   pdm = vtkSmartPointer<vtkPolyDataMapper2D>::New();
 121   pdm->SetInput(crossCursor->GetOutput());
 122
 123   pdmA = vtkSmartPointer<vtkActor2D>::New();
 124   pdmA->SetMapper(pdm);
 125   pdmA->GetProperty()->SetColor(255,10,212);
 126   pdmA->SetVisibility(0);
 127   pdmA->SetPickable(0);
 128
 129   ca = vtkSmartPointer<vtkCornerAnnotation>::New();
 130   ca->GetTextProperty()->SetColor(255,10,212);
 131   ca->SetVisibility(1);
 132   mFileName = "";
 133
 134   mVF = NULL;
 135   mOverlay = NULL;
 136   mFusion = NULL;
 137   mLandmarks = NULL;
 138
 139   legend = vtkSmartPointer<vtkScalarBarActor>::New();
 140   //legend->SetTitle("test!");
 141   legend->SetPosition(0.82,0.18);
 142   legend->SetWidth(0.1);
 143   legend->SetVisibility(0);
 144   legend->SetLabelFormat("%.1f");
 145   this->GetRenderer()->AddActor(legend);
 146
 147   this->WindowLevel->Delete();
 148   this->WindowLevel = vvImageMapToWLColors::New();
 149
 150   this->InstallPipeline();
 151 }
 152 //------------------------------------------------------------------------------
 153
 154
 155 //------------------------------------------------------------------------------
 156 vtkImageMapToWindowLevelColors* vvSlicer::GetOverlayMapper()
 157 {
 158   return mOverlayMapper.GetPointer();
 159 }
 160 //------------------------------------------------------------------------------
 161
 162
 163 //------------------------------------------------------------------------------
 164 vvBlendImageActor* vvSlicer::GetOverlayActor()
 165 {
 166   return mOverlayActor.GetPointer();
 167 }
 168 //------------------------------------------------------------------------------
 169
 170
 171 //------------------------------------------------------------------------------
 172 vtkImageMapToWindowLevelColors* vvSlicer::GetFusionMapper()
 173 {
 174   return mFusionMapper.GetPointer();
 175 }
 176 //------------------------------------------------------------------------------
 177
 178
 179 //------------------------------------------------------------------------------
 180 vtkImageActor* vvSlicer::GetFusionActor()
 181 {
 182   return mFusionActor.GetPointer();
 183 }
 184 //------------------------------------------------------------------------------
 185
 186
 187 //------------------------------------------------------------------------------
 188 vtkActor* vvSlicer::GetVFActor()
 189 {
 190   return mVFActor.GetPointer();
 191 }
 192 //------------------------------------------------------------------------------
 193
 194
 195 //------------------------------------------------------------------------------
 196 vtkCornerAnnotation* vvSlicer::GetAnnotation()
 197 {
 198   return ca.GetPointer();
 199 }
 200 //------------------------------------------------------------------------------
 201
 202
 203 //------------------------------------------------------------------------------
 204 void vvSlicer::EnableReducedExtent(bool b)
 205 {
 206   mUseReducedExtent = b;
 207 }
 208 //------------------------------------------------------------------------------
 209
 210
 211 //------------------------------------------------------------------------------
 212 void vvSlicer::SetReducedExtent(int * ext)
 213 {
 214   mReducedExtent = ext;
 215 }
 216 //------------------------------------------------------------------------------
 217
 218
 219 //------------------------------------------------------------------------------
 220 void vvSlicer::AddContour(vvMesh::Pointer contour,bool propagate)
 221 {
 222
 223   mSurfaceCutActors.push_back(new vvMeshActor());
 224   if (propagate)
 225     mSurfaceCutActors.back()->Init(contour,mCurrentTSlice,mVF);
 226   else
 227     mSurfaceCutActors.back()->Init(contour,mCurrentTSlice);
 228   mSurfaceCutActors.back()->SetSlicingOrientation(SliceOrientation);
 229   this->GetRenderer()->AddActor(mSurfaceCutActors.back()->GetActor());
 230
 231   SetContourSlice();
 232 }
 233 //------------------------------------------------------------------------------
 234
 235
 236 //------------------------------------------------------------------------------
 237 void vvSlicer::ToggleContourSuperposition()
 238 {
 239   for (std::vector<vvMeshActor*>::iterator i=mSurfaceCutActors.begin();
 240        i!=mSurfaceCutActors.end(); i++)
 241     (*i)->ToggleSuperposition();
 242 }
 243 //------------------------------------------------------------------------------
 244
 245
 246 //------------------------------------------------------------------------------
 247 void vvSlicer::SetCursorColor(int r,int g, int b)
 248 {
 249   pdmA->GetProperty()->SetColor(r,g,b);
 250 }
 251 //------------------------------------------------------------------------------
 252
 253
 254 //------------------------------------------------------------------------------
 255 void vvSlicer::SetCursorVisibility(bool s)
 256 {
 257   pdmA->SetVisibility(s);
 258 }
 259 //------------------------------------------------------------------------------
 260
 261
 262 //------------------------------------------------------------------------------
 263 bool vvSlicer::GetCursorVisibility()
 264 {
 265   return pdmA->GetVisibility();
 266 }
 267 //------------------------------------------------------------------------------
 268
 269
 270 //------------------------------------------------------------------------------
 271 void vvSlicer::SetCornerAnnotationVisibility(bool s)
 272 {
 273   ca->SetVisibility(s);
 274 }
 275 //------------------------------------------------------------------------------
 276
 277
 278 //------------------------------------------------------------------------------
 279 bool vvSlicer::GetCornerAnnotationVisibility()
 280 {
 281   return ca->GetVisibility();
 282 }
 283 //------------------------------------------------------------------------------
 284
 285
 286 //------------------------------------------------------------------------------
 287 vvSlicer::~vvSlicer()
 288 {
 289   for (std::vector<vvMeshActor*>::iterator i=mSurfaceCutActors.begin();
 290        i!=mSurfaceCutActors.end(); i++)
 291     delete (*i);
 292 }
 293 //------------------------------------------------------------------------------
 294
 295
 296 //------------------------------------------------------------------------------
 297 void vvSlicer::SetCurrentPosition(double x, double y, double z, int t)
 298 {
 299   mCurrent[0] = x;
 300   mCurrent[1] = y;
 301   mCurrent[2] = z;
 302   mCurrentTSlice = t;
 303 }
 304 //------------------------------------------------------------------------------
 305
 306
 307 //------------------------------------------------------------------------------
 308 void vvSlicer::SetImage(vvImage::Pointer image)
 309 {
 310   if (image->GetVTKImages().size()) {
 311     mImage = image;
 312
 313     if (!mImageReslice) {
 314       mImageReslice = vtkSmartPointer<vtkImageReslice>::New();
 315       mImageReslice->SetInterpolationModeToLinear();
 316       mImageReslice->AutoCropOutputOn();
 317       mImageReslice->SetBackgroundColor(-1000,-1000,-1000,1);
 318     }
 319     mImageReslice->SetResliceTransform(mImage->GetTransform());
 320     mImageReslice->SetInput(0, mImage->GetFirstVTKImageData());
 321     mImageReslice->UpdateInformation();
 322
 323     this->Superclass::SetInput(mImageReslice->GetOutput());
 324
 325     int extent[6];
 326     this->GetInput()->GetWholeExtent(extent);
 327
 328     // Prevent crash when reload -> change slice if outside extent
 329     if (Slice < extent[SliceOrientation*2] || Slice>=extent[SliceOrientation*2+1]) {
 330       Slice = (extent[SliceOrientation*2+1]-extent[SliceOrientation*2])/2.0;
 331     }
 332
 333     // Make sure that the required part image has been computed
 334     extent[SliceOrientation*2] = Slice;
 335     extent[SliceOrientation*2+1] = Slice;
 336     mImageReslice->GetOutput()->SetUpdateExtent(extent);
 337     mImageReslice->GetOutput()->Update();
 338
 339     this->UpdateDisplayExtent();
 340
 341     mCurrentTSlice = 0;
 342     ca->SetText(0,mFileName.c_str());
 343   }
 344 }
 345 //------------------------------------------------------------------------------
 346
 347
 348 //------------------------------------------------------------------------------
 349 void vvSlicer::SetOverlay(vvImage::Pointer overlay)
 350 {
 351   if (overlay->GetVTKImages().size()) {
 352     mOverlay = overlay;
 353
 354     if (!mOverlayReslice) {
 355       mOverlayReslice = vtkSmartPointer<vtkImageReslice>::New();
 356       mOverlayReslice->SetInterpolationModeToLinear();
 357       mOverlayReslice->AutoCropOutputOn();
 358       mOverlayReslice->SetBackgroundColor(-1000,-1000,-1000,1);
 359     }
 360     mOverlayReslice->SetResliceTransform(mOverlay->GetTransform());
 361     mOverlayReslice->SetInput(0, mOverlay->GetFirstVTKImageData());
 362
 363     if (!mOverlayMapper)
 364       mOverlayMapper = vtkSmartPointer<vtkImageMapToWindowLevelColors>::New();
 365     mOverlayMapper->SetInput(mOverlayReslice->GetOutput());
 366
 367     if (!mOverlayActor) {
 368       mOverlayActor = vtkSmartPointer<vvBlendImageActor>::New();
 369       mOverlayActor->SetInput(mOverlayMapper->GetOutput());
 370       mOverlayActor->SetPickable(0);
 371       mOverlayActor->SetVisibility(false);
 372       mOverlayActor->SetOpacity(0.5);
 373     }
 374
 375     //stupid but necessary : the Overlay need to be rendered before fusion
 376     if (mFusionActor) {
 377       this->GetRenderer()->RemoveActor(mFusionActor);
 378       this->GetRenderer()->AddActor(mOverlayActor);
 379       this->GetRenderer()->AddActor(mFusionActor);
 380     } else
 381       this->GetRenderer()->AddActor(mOverlayActor);
 382
 383     //Synchronize orientation and slice
 384     this->SetSliceOrientation(this->SliceOrientation);
 385     this->SetTSlice(mCurrentTSlice);
 386   }
 387 }
 388 //------------------------------------------------------------------------------
 389
 390
 391 //------------------------------------------------------------------------------
 392 void vvSlicer::SetFusion(vvImage::Pointer fusion)
 393 {
 394   if (fusion->GetVTKImages().size()) {
 395     mFusion = fusion;
 396
 397     if (!mFusionReslice) {
 398       mFusionReslice = vtkSmartPointer<vtkImageReslice>::New();
 399       mFusionReslice->SetInterpolationModeToLinear();
 400       mFusionReslice->AutoCropOutputOn();
 401       mFusionReslice->SetBackgroundColor(-1000,-1000,-1000,1);
 402     }
 403     mFusionReslice->SetResliceTransform(mFusion->GetTransform());
 404     mFusionReslice->SetInput(0, mFusion->GetFirstVTKImageData());
 405
 406     if (!mFusionMapper)
 407       mFusionMapper = vtkSmartPointer<vtkImageMapToWindowLevelColors>::New();
 408     mFusionMapper->SetInput(mFusionReslice->GetOutput());
 409
 410     if (!mFusionActor) {
 411       mFusionActor = vtkSmartPointer<vtkImageActor>::New();
 412       mFusionActor->SetInput(mFusionMapper->GetOutput());
 413       mFusionActor->SetPickable(0);
 414       mFusionActor->SetVisibility(false);
 415       mFusionActor->SetOpacity(0.7);
 416       this->GetRenderer()->AddActor(mFusionActor);
 417     }
 418
 419     //Synchronize orientation and slice
 420     this->SetSliceOrientation(this->SliceOrientation);
 421     this->SetTSlice(mCurrentTSlice);
 422   }
 423 }
 424 //------------------------------------------------------------------------------
 425
 426
 427 //------------------------------------------------------------------------------
 428 void vvSlicer::SetActorVisibility(const std::string& actor_type, int overlay_index ,bool vis)
 429 {
 430   if (actor_type == "vector") {
 431     this->mVFActor->SetVisibility(vis);
 432   }
 433   if (actor_type == "overlay") {
 434     this->mOverlayActor->SetVisibility(vis);
 435   }
 436   if (actor_type == "fusion") {
 437     this->mFusionActor->SetVisibility(vis);
 438   }
 439   if (actor_type == "contour")
 440     this->mSurfaceCutActors[overlay_index]->GetActor()->SetVisibility(vis);
 441   UpdateDisplayExtent();
 442 }
 443 //------------------------------------------------------------------------------
 444
 445
 446 //------------------------------------------------------------------------------
 447 void vvSlicer::SetVF(vvImage::Pointer vf)
 448 {
 449   if (vf->GetVTKImages().size()) {
 450     mVF = vf;
 451
 452     if (!mAAFilter) {
 453       mAAFilter= vtkSmartPointer<vtkAssignAttribute>::New();
 454       mVOIFilter = vtkSmartPointer<vtkExtractVOI>::New();
 455       mVOIFilter->SetSampleRate(mSubSampling,mSubSampling,mSubSampling);
 456     }
 457     mVOIFilter->SetInput(vf->GetFirstVTKImageData());
 458     mAAFilter->SetInput(mVOIFilter->GetOutput());
 459     ///This tells VTK to use the scalar (pixel) data of the image to draw the little arrows
 460     mAAFilter->Assign(vtkDataSetAttributes::SCALARS, vtkDataSetAttributes::VECTORS, vtkAssignAttribute::POINT_DATA);
 461
 462     if (!mArrow)
 463       mArrow = vtkSmartPointer<vvGlyphSource>::New();
 464     mArrow->SetGlyphTypeToSpecificArrow();
 465     mArrow->SetScale(mScale);
 466     mArrow->FilledOff();
 467
 468     // Glyph the gradient vector (with arrows)
 469     if (!mGlyphFilter)
 470       mGlyphFilter = vtkSmartPointer<vvGlyph2D>::New();
 471     mGlyphFilter->SetInput(mAAFilter->GetOutput());
 472     mGlyphFilter->SetSource(mArrow->GetOutput());
 473     mGlyphFilter->ScalingOn();
 474     mGlyphFilter->SetScaleModeToScaleByVector();
 475     mGlyphFilter->OrientOn();
 476     mGlyphFilter->SetVectorModeToUseVector();
 477     mGlyphFilter->SetColorModeToColorByVector();
 478
 479     if (!mVFColorLUT)
 480       mVFColorLUT = vtkSmartPointer<vtkLookupTable>::New();
 481
 482     double mVFColorHSV[3];
 483     vtkMath::RGBToHSV(mVFColor, mVFColorHSV);
 484     mVFColorLUT->SetHueRange(mVFColorHSV[0], mVFColorHSV[0]);
 485     mVFColorLUT->SetSaturationRange(mVFColorHSV[1],mVFColorHSV[1]);
 486     mVFColorLUT->SetValueRange(mVFColorHSV[2], mVFColorHSV[2]);
 487
 488     if (!mVFMapper)
 489       mVFMapper = vtkSmartPointer<vtkPolyDataMapper>::New();
 490     mVFMapper->SetInput(mGlyphFilter->GetOutput());
 491     mVFMapper->ImmediateModeRenderingOn();
 492     mVFMapper->SetLookupTable(mVFColorLUT);
 493
 494     if (!mVFActor)
 495       mVFActor = vtkSmartPointer<vtkActor>::New();
 496     mVFActor->SetMapper(mVFMapper);
 497     mVFActor->SetPickable(0);
 498     mVFActor->GetProperty()->SetLineWidth(mVFWidth);
 499     this->UpdateDisplayExtent();
 500     this->GetRenderer()->AddActor(mVFActor);
 501
 502     //Synchronize slice
 503     SetTSlice(mCurrentTSlice);
 504   }
 505 }
 506 //------------------------------------------------------------------------------
 507
 508
 509 //------------------------------------------------------------------------------
 510 void vvSlicer::SetLandmarks(vvLandmarks* landmarks)
 511 {
 512   mLandmarks = landmarks;
 513   if (landmarks) {
 514
 515     if (!mCross)
 516       mCross = vtkSmartPointer<vtkCursor3D>::New();
 517     mCross->SetFocalPoint(0.0,0.0,0.0);
 518     mCross->SetModelBounds(-10,10,-10,10,-10,10);
 519     mCross->AllOff();
 520     mCross->AxesOn();
 521
 522     if (!mLandGlyph)
 523       mLandGlyph = vtkSmartPointer<vtkGlyph3D>::New();
 524     mLandGlyph->SetSource(mCross->GetOutput());
 525     mLandGlyph->SetInput(landmarks->GetOutput());
 526     //mLandGlyph->SetIndexModeToScalar();
 527     mLandGlyph->SetRange(0,1);
 528     mLandGlyph->ScalingOff();
 529
 530     mLandGlyph->SetColorModeToColorByScalar();
 531
 532     if (!mClipBox)
 533       mClipBox = vtkSmartPointer<vtkBox>::New();
 534     if (!mLandClipper)
 535       mLandClipper = vtkSmartPointer<vtkClipPolyData>::New();
 536     mLandClipper->InsideOutOn();
 537     mLandClipper->SetInput(mLandGlyph->GetOutput());
 538     mLandClipper->SetClipFunction(mClipBox);
 539
 540     if (!mLandMapper)
 541       mLandMapper = vtkSmartPointer<vtkPolyDataMapper>::New();
 542     mLandMapper->SetInputConnection(mLandClipper->GetOutputPort());
 543     //mLandMapper->ScalarVisibilityOff();
 544
 545     if (!mLandActor)
 546       mLandActor = vtkSmartPointer<vtkActor>::New();
 547     mLandActor->SetMapper(mLandMapper);
 548     mLandActor->GetProperty()->SetColor(255,10,212);
 549     mLandActor->SetPickable(0);
 550     mLandActor->SetVisibility(true);
 551     this->UpdateDisplayExtent();
 552     this->GetRenderer()->AddActor(mLandActor);
 553   }
 554 }
 555 //------------------------------------------------------------------------------
 556
 557 //------------------------------------------------------------------------------
 558 //FIXME: this function leaks memory, we should fix it someday :)
 559 void vvSlicer::RemoveActor(const std::string& actor_type, int overlay_index)
 560 {
 561   if (actor_type == "vector") {
 562     Renderer->RemoveActor(mVFActor);
 563     mGlyphFilter=NULL;
 564     mVF = NULL;
 565     mArrow = NULL;
 566     mAAFilter=NULL;
 567     mVOIFilter = NULL;
 568     mVFMapper = NULL;
 569     mVFActor = NULL;
 570   }
 571   if (actor_type == "overlay") {
 572     Renderer->RemoveActor(mOverlayActor);
 573     mOverlay = NULL;
 574     mOverlayActor = NULL;
 575     mOverlayMapper = NULL;
 576   }
 577   if (actor_type == "fusion") {
 578     Renderer->RemoveActor(mFusionActor);
 579     mFusion = NULL;
 580     mFusionActor = NULL;
 581     mFusionMapper = NULL;
 582   }
 583   if (actor_type == "contour") {
 584     Renderer->RemoveActor(this->mSurfaceCutActors[overlay_index]->GetActor());
 585     mSurfaceCutActors.erase(mSurfaceCutActors.begin()+overlay_index);
 586   }
 587 }
 588 //------------------------------------------------------------------------------
 589
 590
 591 //------------------------------------------------------------------------------
 592 void vvSlicer::SetVFSubSampling(int sub)
 593 {
 594   if (mVOIFilter) {
 595     mVOIFilter->SetSampleRate(mSubSampling,mSubSampling,mSubSampling);
 596     mSubSampling = sub;
 597   }
 598   UpdateDisplayExtent();
 599   Render();
 600 }
 601 //------------------------------------------------------------------------------
 602
 603
 604 //------------------------------------------------------------------------------
 605 void vvSlicer::SetVFScale(int scale)
 606 {
 607   mScale = scale;
 608   if (mArrow)
 609     mArrow->SetScale(mScale);
 610   UpdateDisplayExtent();
 611   Render();
 612 }
 613 //------------------------------------------------------------------------------
 614
 615 //------------------------------------------------------------------------------
 616 void vvSlicer::SetVFWidth(int width)
 617 {
 618   mVFWidth = width;
 619   if (mVFActor)
 620     mVFActor->GetProperty()->SetLineWidth(mVFWidth);
 621   UpdateDisplayExtent();
 622   Render();
 623 }
 624 //------------------------------------------------------------------------------
 625
 626
 627 //------------------------------------------------------------------------------
 628 void vvSlicer::SetVFLog(int log)
 629 {
 630   mVFLog = log;
 631   if (mGlyphFilter) {
 632     mGlyphFilter->SetUseLog(mVFLog);
 633     mGlyphFilter->Modified();
 634   }
 635   UpdateDisplayExtent();
 636   Render();
 637 }
 638 //------------------------------------------------------------------------------
 639
 640
 641 //------------------------------------------------------------------------------
 642 void vvSlicer::SetTSlice(int t)
 643 {
 644   if (t < 0)
 645     t = 0;
 646   else if ((unsigned int)t >= mImage->GetVTKImages().size())
 647     t = mImage->GetVTKImages().size() -1;
 648
 649   if (mCurrentTSlice == t) return;
 650
 651   mCurrentTSlice = t;
 652   mImageReslice->SetInput( mImage->GetVTKImages()[mCurrentTSlice] );
 653   if (mVF && mVFActor->GetVisibility()) {
 654     if (mVF->GetVTKImages().size() > (unsigned int)mCurrentTSlice)
 655       mVOIFilter->SetInput(mVF->GetVTKImages()[mCurrentTSlice]);
 656   }
 657   if (mOverlay && mOverlayActor->GetVisibility()) {
 658     if (mOverlay->GetVTKImages().size() > (unsigned int)mCurrentTSlice)
 659       mOverlayReslice->SetInput( mOverlay->GetVTKImages()[mCurrentTSlice] );
 660   }
 661   if (mFusion && mFusionActor->GetVisibility()) {
 662     if (mFusion->GetVTKImages().size() > (unsigned int)mCurrentTSlice)
 663       mFusionReslice->SetInput( mFusion->GetVTKImages()[mCurrentTSlice]);
 664   }
 665   if (mSurfaceCutActors.size() > 0)
 666     for (std::vector<vvMeshActor*>::iterator i=mSurfaceCutActors.begin();
 667          i!=mSurfaceCutActors.end(); i++)
 668       (*i)->SetTimeSlice(mCurrentTSlice);
 669   UpdateDisplayExtent();
 670 }
 671 //------------------------------------------------------------------------------
 672
 673
 674 //------------------------------------------------------------------------------
 675 int vvSlicer::GetTSlice()
 676 {
 677   return mCurrentTSlice;
 678 }
 679 //------------------------------------------------------------------------------
 680
 681 //------------------------------------------------------------------------------
 682 void vvSlicer::SetSliceOrientation(int orientation)
 683 {
 684   //if 2D image, force to watch in Axial View
 685   int extent[6];
 686   this->GetInput()->GetWholeExtent(extent);
 687   if (extent[5]-extent[4] <= 2)
 688     orientation = vtkImageViewer2::SLICE_ORIENTATION_XY;
 689
 690   if (orientation < vtkImageViewer2::SLICE_ORIENTATION_YZ ||
 691       orientation > vtkImageViewer2::SLICE_ORIENTATION_XY) {
 692     vtkErrorMacro("Error - invalid slice orientation " << orientation);
 693     return;
 694   }
 695
 696   this->SliceOrientation = orientation;
 697
 698   if(mFusion)
 699     AdjustResliceToSliceOrientation(mFusionReslice);
 700
 701   if(mOverlay)
 702     AdjustResliceToSliceOrientation(mOverlayReslice);
 703
 704   // Update the viewer
 705   int *range = this->GetSliceRange();
 706   if (range)
 707     this->Slice = static_cast<int>((range[0] + range[1]) * 0.5);
 708
 709   // Go to current cursor position
 710   // double* cursorPos = GetCursorPosition();
 711   // DDV(cursorPos, 3);
 712   // SetCurrentPosition(cursorPos[0],cursorPos[1],cursorPos[2],cursorPos[3]);
 713
 714   this->UpdateOrientation();
 715   this->UpdateDisplayExtent();
 716
 717   if (this->Renderer && this->GetInput()) {
 718     double scale = this->Renderer->GetActiveCamera()->GetParallelScale();
 719     this->Renderer->ResetCamera();
 720     this->Renderer->GetActiveCamera()->SetParallelScale(scale);
 721   }
 722
 723   SetContourSlice();
 724 }
 725 //----------------------------------------------------------------------------
 726
 727 //------------------------------------------------------------------------------
 728 // This function ensures that we sample the slices of a vtkImageReslice filter
 729 // in the direction of the slicer (SliceOrientation) similarly as mImageReslice.
 730 // In other words, we change the grid of the reslice in the same way as the grid
 731 // of the displayed image in the slicing direction.
 732 void vvSlicer::AdjustResliceToSliceOrientation(vtkImageReslice *reslice)
 733 {
 734   // Reset autocrop
 735   double origin[3] = {VTK_DOUBLE_MAX, VTK_DOUBLE_MAX, VTK_DOUBLE_MAX};
 736   double spacing[3] = {VTK_DOUBLE_MAX, VTK_DOUBLE_MAX, VTK_DOUBLE_MAX};
 737   reslice->SetOutputOrigin(origin);
 738   reslice->SetOutputSpacing(spacing);
 739   reslice->GetOutput()->UpdateInformation();
 740   reslice->GetOutput()->GetOrigin(origin);
 741   reslice->GetOutput()->GetSpacing(spacing);
 742
 743   // Use similar spacing as the image in the direction SliceOrientation
 744   spacing[this->SliceOrientation] = mImageReslice->GetOutput()->GetSpacing()[this->SliceOrientation];
 745
 746   // Modify origin to be on the image grid in the direction SliceOrientation in 3 steps
 747   // Step 1: from world coordinates to image coordinates
 748   origin[this->SliceOrientation] -= mImageReslice->GetOutput()->GetOrigin()[this->SliceOrientation];
 749   origin[this->SliceOrientation] /= mImageReslice->GetOutput()->GetSpacing()[this->SliceOrientation];
 750   // Step 2: round to superior grid positionInc
 751   origin[this->SliceOrientation] = itk::Math::Ceil<double>(origin[this->SliceOrientation]);
 752   // Step 3: back to world coordinates
 753   origin[this->SliceOrientation] *= mImageReslice->GetOutput()->GetSpacing()[this->SliceOrientation];
 754   origin[this->SliceOrientation] += mImageReslice->GetOutput()->GetOrigin()[this->SliceOrientation];
 755
 756   // Set new spacing and origin
 757   reslice->SetOutputOrigin(origin);
 758   reslice->SetOutputSpacing(spacing);
 759   reslice->UpdateInformation();
 760 }
 761 //------------------------------------------------------------------------------
 762
 763 //----------------------------------------------------------------------------
 764 int * vvSlicer::GetExtent()
 765 {
 766   int *w_ext;
 767   if (mUseReducedExtent) {
 768     w_ext = mReducedExtent;
 769   } else w_ext = GetInput()->GetWholeExtent();
 770   return w_ext;
 771 }
 772 //----------------------------------------------------------------------------
 773
 774
 775 //----------------------------------------------------------------------------
 776 int vvSlicer::GetOrientation()
 777 {
 778   return this->SliceOrientation;
 779 }
 780 //----------------------------------------------------------------------------
 781
 782 //----------------------------------------------------------------------------
 783 void vvSlicer::UpdateDisplayExtent()
 784 {
 785   vtkImageData *input = this->GetInput();
 786   if (!input || !this->ImageActor) {
 787     return;
 788   }
 789   input->UpdateInformation();
 790
 791   // Local copy of extent
 792   int w_ext[6];
 793   for(unsigned int i=0; i<6; i++){
 794     if (mUseReducedExtent)
 795       w_ext[i] = mReducedExtent[i];
 796     else
 797       w_ext[i] = input->GetWholeExtent()[i];
 798   }
 799
 800   // Set slice value
 801   w_ext[ this->SliceOrientation*2   ] = this->Slice;
 802   w_ext[ this->SliceOrientation*2+1 ] = this->Slice;
 803
 804   // Image actor
 805   this->ImageActor->SetDisplayExtent(w_ext);
 806
 807   // Position vector
 808   double position[3] = {0.,0.,0.};
 809   double positionInc = (Renderer->GetActiveCamera()->GetPosition()[this->SliceOrientation] > this->Slice)?10:-10;
 810   position[this->SliceOrientation] += positionInc;
 811
 812   // Overlay image actor
 813   if (mOverlay && mOverlayActor->GetVisibility()) {
 814     int overExtent[6];
 815     mOverlayReslice->GetOutput()->UpdateInformation();
 816     this->ConvertImageToImageDisplayExtent(input, w_ext, mOverlayReslice->GetOutput(), overExtent);
 817     ClipDisplayedExtent(overExtent, mOverlayMapper->GetInput()->GetWholeExtent());
 818     mOverlayActor->SetDisplayExtent( overExtent );
 819     mOverlayActor->SetPosition(position);
 820   }
 821   position[this->SliceOrientation] += positionInc;
 822
 823   // Fusion image actor
 824   if (mFusion && mFusionActor->GetVisibility()) {
 825     int fusExtent[6];
 826     mFusionReslice->GetOutput()->UpdateInformation();
 827     this->ConvertImageToImageDisplayExtent(input, w_ext, mFusionReslice->GetOutput(), fusExtent);
 828     ClipDisplayedExtent(fusExtent, mFusionMapper->GetInput()->GetWholeExtent());
 829     mFusionActor->SetDisplayExtent(fusExtent);
 830     mFusionActor->SetPosition(position);
 831   }
 832   position[this->SliceOrientation] += positionInc;
 833
 834   // Vector field actor
 835   if (mVF && mVFActor->GetVisibility()) {
 836     int vfExtent[6];
 837     mVF->GetVTKImages()[0]->UpdateInformation();
 838     this->ConvertImageToImageDisplayExtent(input, w_ext, mVF->GetVTKImages()[0], vfExtent);
 839     ClipDisplayedExtent(vfExtent, mVOIFilter->GetInput()->GetWholeExtent());
 840     mVOIFilter->SetVOI(vfExtent);
 841     int orientation[3] = {1,1,1};
 842     orientation[this->SliceOrientation] = 0;
 843     mGlyphFilter->SetOrientation(orientation[0], orientation[1], orientation[2]);
 844     mVFMapper->Update();
 845     mVFActor->SetPosition(position);
 846   }
 847   position[this->SliceOrientation] += positionInc;
 848
 849   // Landmarks actor
 850   if (mLandActor) {
 851     if (mClipBox) {
 852       double bounds [6];
 853       for(unsigned int i=0; i<6; i++)
 854         bounds[i] = ImageActor->GetBounds()[i];
 855       bounds[ this->SliceOrientation*2   ] = ImageActor->GetBounds()[ this->SliceOrientation*2  ]-fabs(0.5/this->GetInput()->GetSpacing()[this->SliceOrientation]);
 856       bounds[ this->SliceOrientation*2+1 ] = ImageActor->GetBounds()[ this->SliceOrientation*2+1 ]+fabs(0.5/this->GetInput()->GetSpacing()[this->SliceOrientation]);
 857       mClipBox->SetBounds(bounds);
 858       UpdateLandmarks();
 859     }
 860     mLandActor->SetPosition(position);
 861   }
 862
 863   // Figure out the correct clipping range
 864   if (this->Renderer) {
 865     if (this->InteractorStyle &&
 866         this->InteractorStyle->GetAutoAdjustCameraClippingRange()) {
 867       this->Renderer->ResetCameraClippingRange();
 868     } else {
 869       vtkCamera *cam = this->Renderer->GetActiveCamera();
 870       if (cam) {
 871         double bounds[6];
 872         this->ImageActor->GetBounds(bounds);
 873         double spos = (double)bounds[this->SliceOrientation * 2];
 874         double cpos = (double)cam->GetPosition()[this->SliceOrientation];
 875         double range = fabs(spos - cpos);
 876         double *spacing = input->GetSpacing();
 877         double avg_spacing =
 878           ((double)spacing[0] + (double)spacing[1] + (double)spacing[2]) / 3.0;
 879         cam->SetClippingRange(range - avg_spacing * 3.0, range + avg_spacing * 3.0);
 880       }
 881     }
 882   }
 883 }
 884 //----------------------------------------------------------------------------
 885
 886 //----------------------------------------------------------------------------
 887 void vvSlicer::ConvertImageToImageDisplayExtent(vtkImageData *sourceImage, const int sourceExtent[6],
 888                                                 vtkImageData *targetImage, int targetExtent[6])
 889 {
 890   double dExtents[6];
 891   for(unsigned int i=0; i<6; i++) {
 892     // From source voxel coordinates to world coordinates
 893     dExtents[i] = sourceImage->GetOrigin()[i/2] + sourceImage->GetSpacing()[i/2] * sourceExtent[i];
 894
 895     // From world coordinates to floating point target voxel coordinates
 896     dExtents[i] = (dExtents[i]- targetImage->GetOrigin()[i/2]) / targetImage->GetSpacing()[i/2];
 897
 898     // Round to nearest
 899     targetExtent[i] = itk::Math::Round<double>(dExtents[i]);
 900   }
 901 }
 902 //----------------------------------------------------------------------------
 903
 904 //----------------------------------------------------------------------------
 905 void vvSlicer::ClipDisplayedExtent(int extent[6], int refExtent[6])
 906 {
 907   bool out = false;
 908   int maxBound = 6;
 909
 910   //2D overlay on 3D image specific case
 911   if (refExtent[4] == refExtent[5]) {
 912     maxBound = 4;
 913     extent[4] = refExtent[4];
 914     extent[5] = refExtent[5];
 915   }
 916
 917   for (int i = 0; i < maxBound; i = i+2) {
 918     //if we are totally outside the image
 919     if ( extent[i] > refExtent[i+1] || extent[i+1] < refExtent[i] ) {
 920       out = true;
 921       break;
 922     }
 923     //crop to the limit of the image
 924     extent[i] = (extent[i] > refExtent[i]) ? extent[i] : refExtent[i];
 925     extent[i] = (extent[i] < refExtent[i+1]) ? extent[i] : refExtent[i+1];
 926     extent[i+1] = (extent[i+1] > refExtent[i]) ? extent[i+1] : refExtent[i];
 927     extent[i+1] = (extent[i+1] < refExtent[i+1]) ? extent[i+1] : refExtent[i+1];
 928   }
 929   if (out)
 930     for (int i = 0; i < maxBound; i = i+2) {
 931       extent[i] = refExtent[i];
 932       extent[i+1] = refExtent[i];
 933     }
 934 }
 935 //----------------------------------------------------------------------------
 936
 937
 938 //----------------------------------------------------------------------------
 939 void vvSlicer::UpdateOrientation()
 940 {
 941   // Set the camera position
 942   vtkCamera *cam = this->Renderer ? this->Renderer->GetActiveCamera() : NULL;
 943   if (cam) {
 944     switch (this->SliceOrientation) {
 945     case vtkImageViewer2::SLICE_ORIENTATION_XY:
 946       cam->SetFocalPoint(0,0,0);
 947       cam->SetPosition(0,0,-1); // -1 if medical ?
 948       cam->SetViewUp(0,-1,0);
 949       break;
 950
 951     case vtkImageViewer2::SLICE_ORIENTATION_XZ:
 952       cam->SetFocalPoint(0,0,0);
 953       cam->SetPosition(0,-1,0); // 1 if medical ?
 954       cam->SetViewUp(0,0,1);
 955       break;
 956
 957     case vtkImageViewer2::SLICE_ORIENTATION_YZ:
 958       cam->SetFocalPoint(0,0,0);
 959       cam->SetPosition(-1,0,0); // -1 if medical ?
 960       cam->SetViewUp(0,0,1);
 961       break;
 962     }
 963   }
 964 }
 965 //----------------------------------------------------------------------------
 966
 967
 968 //----------------------------------------------------------------------------
 969 void vvSlicer::SetOpacity(double s)
 970 {
 971   this->GetImageActor()->SetOpacity(s);
 972 }
 973 //----------------------------------------------------------------------------
 974
 975
 976 //----------------------------------------------------------------------------
 977 void vvSlicer::SetRenderWindow(int orientation, vtkRenderWindow * rw)
 978 {
 979   this->Superclass::SetRenderWindow(rw);
 980   this->SetupInteractor(rw->GetInteractor());
 981   ca->SetImageActor(this->GetImageActor());
 982   ca->SetWindowLevel(this->GetWindowLevel());
 983   ca->SetText(2, "<slice>");
 984   ca->SetText(3, "<window>\n<level>");
 985
 986   double bounds[6];
 987   double max = 65000;
 988
 989   bounds[0] = -max;
 990   bounds[1] = max;
 991   bounds[2] = -max;
 992   bounds[3] = max;
 993   bounds[4] = -max;
 994   bounds[5] = max;
 995
 996   crossCursor->SetModelBounds(bounds);
 997   this->GetRenderer()->AddActor(pdmA);
 998   this->GetRenderer()->AddActor(ca);
 999   this->GetRenderer()->ResetCamera();
1000
1001   //this is just a mapping between the labeling of the orientations presented to the user and
1002   //the one used by vtk
1003   SetSliceOrientation(2-(orientation%3));
1004   ResetCamera();
1005 }
1006 //----------------------------------------------------------------------------
1007
1008
1009 //----------------------------------------------------------------------------
1010 void vvSlicer::ResetCamera()
1011 {
1012   this->GetRenderer()->ResetCamera();
1013 }
1014 //----------------------------------------------------------------------------
1015
1016
1017 //----------------------------------------------------------------------------
1018 void vvSlicer::SetDisplayMode(bool i)
1019 {
1020   this->GetImageActor()->SetVisibility(i);
1021   this->GetAnnotation()->SetVisibility(i);
1022   this->GetRenderer()->SetDraw(i);
1023   if (mLandActor)
1024     mLandActor->SetVisibility(i);
1025   pdmA->SetVisibility(i);
1026   if (i)
1027     UpdateDisplayExtent();
1028 }
1029 //----------------------------------------------------------------------------
1030
1031
1032 //----------------------------------------------------------------------------
1033 void vvSlicer::FlipHorizontalView()
1034 {
1035   vtkCamera *cam = this->Renderer ? this->Renderer->GetActiveCamera() : NULL;
1036   if (cam) {
1037     double *position = cam->GetPosition();
1038     switch (this->SliceOrientation) {
1039     case vtkImageViewer2::SLICE_ORIENTATION_XY:
1040       cam->SetPosition(position[0],position[1],-position[2]);
1041       break;
1042
1043     case vtkImageViewer2::SLICE_ORIENTATION_XZ:
1044       cam->SetPosition(position[0],-position[1],position[2]);
1045       break;
1046
1047     case vtkImageViewer2::SLICE_ORIENTATION_YZ:
1048       cam->SetPosition(-position[0],position[1],position[2]);
1049       break;
1050     }
1051     this->Renderer->ResetCameraClippingRange();
1052     this->UpdateDisplayExtent();
1053   }
1054 }
1055 //----------------------------------------------------------------------------
1056
1057
1058 //----------------------------------------------------------------------------
1059 void vvSlicer::FlipVerticalView()
1060 {
1061   vtkCamera *cam = this->Renderer ? this->Renderer->GetActiveCamera() : NULL;
1062   if (cam) {
1063     FlipHorizontalView();
1064     double *viewup = cam->GetViewUp();
1065     cam->SetViewUp(-viewup[0],-viewup[1],-viewup[2]);
1066     this->UpdateDisplayExtent();
1067   }
1068 }
1069 //----------------------------------------------------------------------------
1070
1071
1072 //----------------------------------------------------------------------------
1073 void vvSlicer::SetColorWindow(double window)
1074 {
1075   vtkLookupTable* LUT = static_cast<vtkLookupTable*>(this->GetWindowLevel()->GetLookupTable());
1076   if ( LUT ) {
1077     double level = this->GetWindowLevel()->GetLevel();
1078     LUT->SetTableRange(level-fabs(window)/4,level+fabs(window)/4);
1079     LUT->Build();
1080   }
1081   this->vtkImageViewer2::SetColorWindow(window);
1082 }
1083 //----------------------------------------------------------------------------
1084
1085
1086 //----------------------------------------------------------------------------
1087 void vvSlicer::SetColorLevel(double level)
1088 {
1089   vtkLookupTable* LUT = static_cast<vtkLookupTable*>(this->GetWindowLevel()->GetLookupTable());
1090   if ( LUT ) {
1091     double window = this->GetWindowLevel()->GetWindow();
1092     LUT->SetTableRange(level-fabs(window)/4,level+fabs(window)/4);
1093     LUT->Build();
1094   }
1095   this->vtkImageViewer2::SetColorLevel(level);
1096 }
1097 //----------------------------------------------------------------------------
1098
1099 //----------------------------------------------------------------------------
1100 // Returns the min an the max value in a 41x41 region around the mouse pointer
1101 void vvSlicer::GetExtremasAroundMousePointer(double & min, double & max)
1102 {
1103   //Get mouse pointer position in view coordinates
1104   double fLocalExtents[6];
1105   for(int i=0; i<3; i++) {
1106     fLocalExtents[i*2  ] = mCurrent[i];
1107     fLocalExtents[i*2+1] = mCurrent[i];
1108   }
1109   this->Renderer->WorldToView(fLocalExtents[0], fLocalExtents[2], fLocalExtents[4]);
1110   this->Renderer->WorldToView(fLocalExtents[1], fLocalExtents[3], fLocalExtents[5]);
1111   for(int i=0; i<3; i++) {
1112     if (i!=SliceOrientation) { //SR: assumes that SliceOrientation is valid in ViewCoordinates (???)
1113       fLocalExtents[i*2  ] -= 0.2;
1114       fLocalExtents[i*2+1] += 0.2;
1115     }
1116   }
1117   this->Renderer->ViewToWorld(fLocalExtents[0], fLocalExtents[2], fLocalExtents[4]);
1118   this->Renderer->ViewToWorld(fLocalExtents[1], fLocalExtents[3], fLocalExtents[5]);
1119
1120   //Convert to image pixel coordinates (rounded)
1121   int iLocalExtents[6];
1122   for(int i=0; i<3; i++) {
1123     fLocalExtents[i*2  ] = (fLocalExtents[i*2  ] - this->GetInput()->GetOrigin()[i])/this->GetInput()->GetSpacing()[i];
1124     fLocalExtents[i*2+1] = (fLocalExtents[i*2+1] - this->GetInput()->GetOrigin()[i])/this->GetInput()->GetSpacing()[i];
1125
1126     iLocalExtents[i*2  ] = lrint(fLocalExtents[i*2  ]);
1127     iLocalExtents[i*2+1] = lrint(fLocalExtents[i*2+1]);
1128
1129     if(iLocalExtents[i*2  ]>iLocalExtents[i*2+1])
1130       std::swap(iLocalExtents[i*2], iLocalExtents[i*2+1]);
1131   }
1132
1133   vtkSmartPointer<vtkExtractVOI> voiFilter = vtkSmartPointer<vtkExtractVOI>::New();
1134   voiFilter->SetInput(this->GetInput());
1135   voiFilter->SetVOI(iLocalExtents);
1136   voiFilter->Update();
1137   if (!voiFilter->GetOutput()->GetNumberOfPoints()) {
1138     min = 0;
1139     max = 0;
1140     return;
1141   }
1142
1143   vtkSmartPointer<vtkImageAccumulate> accFilter = vtkSmartPointer<vtkImageAccumulate>::New();
1144   accFilter->SetInput(voiFilter->GetOutput());
1145   accFilter->Update();
1146
1147   min = *(accFilter->GetMin());
1148   max = *(accFilter->GetMax());
1149 }
1150 //----------------------------------------------------------------------------
1151
1152 //----------------------------------------------------------------------------
1153 double vvSlicer::GetScalarComponentAsDouble(vtkImageData *image, int X, double Y, double Z, int &ix, int &iy, int &iz, int component)
1154 {
1155   ix = lrint(X);
1156   iy = lrint(Y);
1157   iz = lrint(Z);
1158   if (ix < image->GetWholeExtent()[0] ||
1159       ix > image->GetWholeExtent()[1] ||
1160       iy < image->GetWholeExtent()[2] ||
1161       iy > image->GetWholeExtent()[3] ||
1162       iz < image->GetWholeExtent()[4] ||
1163       iz > image->GetWholeExtent()[5] )
1164     return std::numeric_limits<double>::quiet_NaN();
1165
1166   image->SetUpdateExtent(ix, ix, iy, iy, iz, iz);
1167   image->Update();
1168   return image->GetScalarComponentAsDouble(ix, iy, iz, component);
1169 }
1170 //----------------------------------------------------------------------------
1171
1172 //----------------------------------------------------------------------------
1173 void vvSlicer::Render()
1174 {
1175   if (this->GetWindowLevel()->GetLookupTable() && !this->mOverlay && !this->mFusion) {
1176     legend->SetLookupTable(this->GetWindowLevel()->GetLookupTable());
1177     legend->SetVisibility(1);
1178   } else legend->SetVisibility(0);
1179
1180   if (ca->GetVisibility()) {
1181     std::string worldPos = "";
1182     std::stringstream world1;
1183     std::stringstream world2;
1184     std::stringstream world3;
1185     world1 << (int)mCurrent[0];
1186     world2 << (int)mCurrent[1];
1187     world3 << (int)mCurrent[2];
1188     double X = (mCurrent[0] - this->GetInput()->GetOrigin()[0])/this->GetInput()->GetSpacing()[0];
1189     double Y = (mCurrent[1] - this->GetInput()->GetOrigin()[1])/this->GetInput()->GetSpacing()[1];
1190     double Z = (mCurrent[2] - this->GetInput()->GetOrigin()[2])/this->GetInput()->GetSpacing()[2];
1191
1192 //     if (X < this->GetInput()->GetWholeExtent()[0]) X = this->GetInput()->GetWholeExtent()[0];
1193 //     else if (X > this->GetInput()->GetWholeExtent()[1]) X = this->GetInput()->GetWholeExtent()[1];
1194 //     if (Y < this->GetInput()->GetWholeExtent()[2]) Y = this->GetInput()->GetWholeExtent()[2];
1195 //     else if (Y > this->GetInput()->GetWholeExtent()[3]) Y = this->GetInput()->GetWholeExtent()[3];
1196 //     if (Z < this->GetInput()->GetWholeExtent()[4]) Z = this->GetInput()->GetWholeExtent()[4];
1197 //     else if (Z > this->GetInput()->GetWholeExtent()[5]) Z = this->GetInput()->GetWholeExtent()[5];
1198
1199     if (X >= this->GetInput()->GetWholeExtent()[0] &&
1200         X <= this->GetInput()->GetWholeExtent()[1] &&
1201         Y >= this->GetInput()->GetWholeExtent()[2] &&
1202         Y <= this->GetInput()->GetWholeExtent()[3] &&
1203         Z >= this->GetInput()->GetWholeExtent()[4] &&
1204         Z <= this->GetInput()->GetWholeExtent()[5]) {
1205
1206
1207       int ix, iy, iz;
1208       double value = this->GetScalarComponentAsDouble(this->GetInput(), X, Y, Z, ix, iy, iz);
1209
1210       std::stringstream pixel1;
1211       std::stringstream pixel2;
1212       std::stringstream pixel3;
1213       std::stringstream temps;
1214       pixel1 << ix;
1215       pixel2 << iy;
1216       pixel3 << iz;
1217       temps << mCurrentTSlice;
1218
1219       std::stringstream val;
1220       val << value;
1221       worldPos += "data value : " + val.str();
1222       worldPos += "\n mm : " + world1.str() + " " + world2.str() + " " +
1223         world3.str() + " " + temps.str();
1224       worldPos += "\n pixel : " + pixel1.str() + " " + pixel2.str() + " " +
1225         pixel3.str() + " " + temps.str();
1226     }
1227     ca->SetText(1,worldPos.c_str());
1228   }
1229
1230   if (pdmA->GetVisibility()) {
1231     double x = mCursor[0];
1232     double y = mCursor[1];
1233     double z = mCursor[2];
1234     double xCursor = (x - this->GetInput()->GetOrigin()[0])/this->GetInput()->GetSpacing()[0];
1235     double yCursor = (y - this->GetInput()->GetOrigin()[1])/this->GetInput()->GetSpacing()[1];
1236     double zCursor = (z - this->GetInput()->GetOrigin()[2])/this->GetInput()->GetSpacing()[2];
1237
1238     if (xCursor >= this->GetImageActor()->GetDisplayExtent()[0] &&
1239         xCursor < this->GetImageActor()->GetDisplayExtent()[1]+1 &&
1240         yCursor >= this->GetImageActor()->GetDisplayExtent()[2] &&
1241         yCursor < this->GetImageActor()->GetDisplayExtent()[3]+1 &&
1242         zCursor >= this->GetImageActor()->GetDisplayExtent()[4] &&
1243         zCursor < this->GetImageActor()->GetDisplayExtent()[5]+1 ) {
1244       vtkRenderer * renderer = this->Renderer;
1245
1246       renderer->WorldToView(x,y,z);
1247       renderer->ViewToNormalizedViewport(x,y,z);
1248       renderer->NormalizedViewportToViewport(x,y);
1249       renderer->ViewportToNormalizedDisplay(x,y);
1250       renderer->NormalizedDisplayToDisplay(x,y);
1251       crossCursor->SetFocalPoint(x,y,z);
1252     } else
1253       crossCursor->SetFocalPoint(-1,-1,z);
1254   }
1255
1256
1257   if (mOverlay && mOverlayActor->GetVisibility()) {
1258     mOverlayMapper->SetWindow(this->GetColorWindow());
1259     mOverlayMapper->SetLevel(this->GetColorLevel());
1260     mOverlayMapper->GetOutput()->SetUpdateExtent(mOverlayActor->GetDisplayExtent());
1261     mOverlayMapper->GetOutput()->Update();
1262     mOverlayMapper->Update();
1263   }
1264   if (mLandMapper)
1265     UpdateLandmarks();
1266
1267   this->GetRenderWindow()->Render();
1268 }
1269 //----------------------------------------------------------------------------
1270
1271
1272 //----------------------------------------------------------------------------
1273 void vvSlicer::UpdateCursorPosition()
1274 {
1275   if (this->GetImageActor()->GetVisibility()) {
1276     pdmA->SetVisibility(true);
1277     mCursor[0] = mCurrent[0];
1278     mCursor[1] = mCurrent[1];
1279     mCursor[2] = mCurrent[2];
1280     mCursor[3] = mCurrentTSlice;
1281   }
1282 }
1283 //----------------------------------------------------------------------------
1284
1285
1286 //----------------------------------------------------------------------------
1287 void vvSlicer::UpdateLandmarks()
1288 {
1289   vtkPolyData *pd = static_cast<vtkPolyData*>(mLandClipper->GetInput());
1290   if (pd->GetPoints()) {
1291     mLandGlyph->SetRange(0,1);
1292     mLandGlyph->Modified();
1293     mLandGlyph->Update();
1294
1295     mClipBox->Modified();
1296     mLandClipper->Update();
1297     mLandMapper->Update();
1298   }
1299
1300 }
1301 //----------------------------------------------------------------------------
1302
1303
1304 //----------------------------------------------------------------------------
1305 void vvSlicer::SetSlice(int slice)
1306 {
1307   int *range = this->GetSliceRange();
1308   if (range) {
1309     if (slice < range[0]) {
1310       slice = range[0];
1311     } else if (slice > range[1]) {
1312       slice = range[1];
1313     }
1314   }
1315
1316   if (this->Slice == slice) {
1317     return;
1318   }
1319
1320   this->Slice = slice;
1321   SetContourSlice();
1322   this->Modified();
1323   this->UpdateDisplayExtent();
1324
1325   // Seems to work without this line
1326   //this->Render();
1327 }
1328 //----------------------------------------------------------------------------
1329
1330
1331 //----------------------------------------------------------------------------
1332 void vvSlicer::SetContourSlice()
1333 {
1334   if (mSurfaceCutActors.size() > 0)
1335     for (std::vector<vvMeshActor*>::iterator i=mSurfaceCutActors.begin();
1336          i!=mSurfaceCutActors.end(); i++)
1337       (*i)->SetCutSlice((this->Slice)*this->GetImage()->GetSpacing()[this->SliceOrientation]+
1338                         this->GetImage()->GetOrigin()[this->SliceOrientation]);
1339 }
1340 //----------------------------------------------------------------------------
1341
1342
1343 //----------------------------------------------------------------------------
1344 void vvSlicer::ForceUpdateDisplayExtent()
1345 {
1346   this->UpdateDisplayExtent();
1347 }
1348 //----------------------------------------------------------------------------
1349
1350
1351 //----------------------------------------------------------------------------
1352 int* vvSlicer::GetDisplayExtent()
1353 {
1354   return this->GetImageActor()->GetDisplayExtent();
1355 }
1356 //----------------------------------------------------------------------------
1357
1358
1359 //----------------------------------------------------------------------------
1360 void vvSlicer::PrintSelf(ostream& os, vtkIndent indent)
1361 {
1362   this->Superclass::PrintSelf(os, indent);
1363 }
1364 //----------------------------------------------------------------------------
1365
1366 //----------------------------------------------------------------------------
1367 void vvSlicer::SetVFColor(double r, double g, double b)
1368 {
1369   double mVFColorHSV[3];
1370   mVFColor[0] = r;
1371   mVFColor[1] = g;
1372   mVFColor[2] = b;
1373
1374   vtkMath::RGBToHSV(mVFColor, mVFColorHSV);
1375   mVFColorLUT->SetHueRange(mVFColorHSV[0], mVFColorHSV[0]);
1376   mVFColorLUT->SetSaturationRange(mVFColorHSV[1],mVFColorHSV[1]);
1377   mVFColorLUT->SetValueRange(mVFColorHSV[2], mVFColorHSV[2]);
1378
1379   this->Render();
1380 }
1381