CustusX  16.5
An IGT application
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cxVideoGraphics.cpp
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1 /*=========================================================================
2 This file is part of CustusX, an Image Guided Therapy Application.
3 
4 Copyright (c) 2008-2014, SINTEF Department of Medical Technology
5 All rights reserved.
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7 Redistribution and use in source and binary forms, with or without
8 modification, are permitted provided that the following conditions are met:
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10 1. Redistributions of source code must retain the above copyright notice,
11  this list of conditions and the following disclaimer.
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13 2. Redistributions in binary form must reproduce the above copyright notice,
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31 =========================================================================*/
32 
33 
34 #include "cxVideoGraphics.h"
35 
36 #include <vtkActor.h>
37 #include <vtkImageData.h>
38 #include <vtkPlaneSource.h>
39 #include <vtkTransformTextureCoords.h>
40 #include <vtkTextureMapToPlane.h>
41 #include <vtkDataSetMapper.h>
42 #include <vtkTexture.h>
43 #include <vtkProperty.h>
44 #include <vtkImageMask.h>
45 #include <vtkPointData.h>
46 #include <vtkMatrix4x4.h>
47 #include <vtkLookupTable.h>
48 #include <vtkImageThreshold.h>
49 #include <vtkImageChangeInformation.h>
50 #include <vtkExtractVOI.h>
51 
53 #include "cxBoundingBox3D.h"
54 #include "cxLogger.h"
55 
56 namespace cx
57 {
58 
60 {
61  mPlaneActor = vtkActorPtr::New();
62  mPlaneSource = vtkPlaneSourcePtr::New();
63 
64  mDataRedirecter = vtkImageChangeInformationPtr::New();
65  mUSSource = UltrasoundSectorSourcePtr::New();
66 
67  // set a filter that map all zeros in the input to ones. This enables us to
68  // use zero as a special transparency value, to be used in masking.
69  mMapZeroToOne = vtkImageThresholdPtr::New();
70  mMapZeroToOne->ThresholdByLower(1.0);
71  mMapZeroToOne->SetInValue(1);
72  mMapZeroToOne->SetReplaceIn(true);
73 
74  // set the filter that applies a mask to the stream data
75  mMaskFilter = vtkImageMaskPtr::New();
76  mMaskFilter->SetMaskInputData(vtkImageDataPtr());
77  mMaskFilter->SetMaskedOutputValue(0.0);
78 
79  // generate texture coords for mPlaneSource
80  mTextureMapToPlane = vtkTextureMapToPlanePtr::New();
81 
82  mTransformTextureCoords = vtkTransformTextureCoordsPtr::New();
83  mTransformTextureCoords->SetOrigin( 0, 0.5, 0);
84  mTransformTextureCoords->SetScale( 1, 1, 0);
85  mTransformTextureCoords->FlipROn(); // flip around axis
86 
87  mTexture = vtkTexturePtr::New();
88  mTexture->RepeatOff();
89 
90  mDataSetMapper = vtkDataSetMapperPtr::New();
91 
92  mPlaneActor->SetTexture(mTexture);
93  mPlaneActor->SetMapper(mDataSetMapper);
94  mPlaneActor->SetVisibility(false);
95  mPlaneActor->GetProperty()->LightingOff(); // Turning off lighting to remove shadow effects (Fix for #644: 2D ultrasound in 3D scene was too dark)
96 // mPlaneActor->GetProperty()->ShadingOff();
97 }
98 
100 {
101 }
102 
104 {
105  mTransformTextureCoords->SetFlipR(on); // flip around axis
106 }
107 
109 {
110  return mTransformTextureCoords->GetFlipR();
111 }
112 
114 {
115  return mPlaneActor;
116 }
117 
121 void VideoGraphics::setupPipeline()
122 {
123  if (!mInputVideo)
124  {
125  mTexture->SetInputData(NULL);
126  return;
127  }
128 
129  if (mInputMask)
130  {
131  mTextureMapToPlane->SetInputConnection(mPlaneSource->GetOutputPort());
132  mTransformTextureCoords->SetInputConnection(mTextureMapToPlane->GetOutputPort() );
133  mDataSetMapper->SetInputConnection(mTransformTextureCoords->GetOutputPort() );
134 
135  mMaskFilter->SetMaskInputData(mInputMask);
136  mMapZeroToOne->SetInputConnection(mDataRedirecter->GetOutputPort());
137  mMaskFilter->SetInputConnection(0, mMapZeroToOne->GetOutputPort());
138  mTexture->SetInputConnection(mMaskFilter->GetOutputPort());
139  }
140  else if (mInputSector)
141  {
142  mUSSource->setProbeSector(mInputSector);
143  mTransformTextureCoords->SetInputConnection(mUSSource->GetOutputPort() );
144  mDataSetMapper->SetInputConnection(mTransformTextureCoords->GetOutputPort() );
145 
146  mTexture->SetInputConnection(mDataRedirecter->GetOutputPort());
147  }
148  else
149  {
150  mTextureMapToPlane->SetInputConnection(mPlaneSource->GetOutputPort());
151  mTransformTextureCoords->SetInputConnection(mTextureMapToPlane->GetOutputPort() );
152  mDataSetMapper->SetInputConnection(mTransformTextureCoords->GetOutputPort() );
153 
154  mTexture->SetInputConnection(mDataRedirecter->GetOutputPort());
155  }
156 
157  this->setLookupTable();
158  mPlaneActor->SetTexture(mTexture);
159  mPlaneActor->SetMapper(mDataSetMapper);
160 }
161 
163 {
164  if (mInputMask==mask)
165  return;
166  mInputSector = NULL;
167  mInputMask = mask;
168  this->setupPipeline();
169 }
170 
172 {
173  if (mInputSector==sector)
174  return;
175  mInputMask = NULL;
176  mInputSector = sector;
177  this->setupPipeline();
178 }
179 
181 {
182  if (mInputVideo==video)
183  return;
184  mInputVideo = video;
185  this->setupPipeline();
186 }
187 
189 {
190  mPlaneActor->SetUserMatrix(rMu);
191 }
192 
194 {
195  mPlaneActor->SetVisibility(visible);
196  mPlaneActor->Modified();
197 }
198 
200 {
201  if (this->inputImageIsEmpty())
202  {
203  this->setVisibility(false);
204  return;
205  }
206 
207  this->connectVideoImageToPipeline();
208  this->updateLUT();
209  this->updatePlaneSourceBounds();
210 
211  mPlaneActor->Modified();
212 }
213 
214 void VideoGraphics::connectVideoImageToPipeline()
215 {
216  if (mInputVideo == NULL)
217  {
218  mTexture->SetInputData(NULL); // TODO trouble - will destroy the pipeline
219  return;
220  }
221 
222  //Check if 3D volume. If so, only use middle frame
223  int* extent = mInputVideo->GetExtent();
224  if(extent[5] - extent[4] > 0)
225  {
226  int slice = floor(extent[4]+0.5f*(extent[5]-extent[4]));
227  if (slice < 0) slice = 0;
228 // std::cout << "Got 3D volume, showing middle slice: " << slice << std::endl;
229  vtkSmartPointer<vtkExtractVOI> extractVOI = vtkSmartPointer<vtkExtractVOI>::New();
230  extractVOI->SetInputData(mInputVideo);
231  extractVOI->SetVOI(extent[0], extent[1], extent[2], extent[3], slice, slice);
232  extractVOI->Update();
233  mDataRedirecter->SetInputConnection(extractVOI->GetOutputPort());
234  }
235  else //2D
236  {
237  mDataRedirecter->SetInputData(mInputVideo);
238  }
239 
240  mDataRedirecter->UpdateWholeExtent(); // important! syncs update extent to whole extent
241  mDataRedirecter->Update();
242 // mDataRedirecter->GetOutput()->Update(); //???
243 }
244 
245 void VideoGraphics::updatePlaneSourceBounds()
246 {
247  // set the planesource where we have no ProbeDefinition.
248  // TODO dont do this when planesource is not part of pipeline.
249  DoubleBoundingBox3D bounds(mDataRedirecter->GetOutput()->GetBounds());
250  if (!similar(bounds.range()[0], 0.0) || !similar(bounds.range()[1], 0.0))
251  {
252  mPlaneSource->SetOrigin(bounds.corner(0,0,0).begin());
253  mPlaneSource->SetPoint1(bounds.corner(1,0,0).begin());
254  mPlaneSource->SetPoint2(bounds.corner(0,1,0).begin());
255  mPlaneSource->GetOutput()->GetPointData()->Modified();
256  mPlaneSource->GetOutput()->Modified();
257  }
258 }
259 
260 void VideoGraphics::updateLUT()
261 {
262  this->setLookupTable();
263  mTexture->SetLookupTable(mLUT);
264 
265  // apply a lut only if the input data is monochrome
266  int numComp = mDataRedirecter->GetOutput()->GetNumberOfScalarComponents();
267  bool is8bit = mDataRedirecter->GetOutput()->GetScalarType()==VTK_UNSIGNED_CHAR;
268  if (numComp==1)
269  {
270  double srange[2];
271  if (is8bit)
272  {
273  srange[0] = 0;
274  srange[1] = 255;
275  }
276  else
277  {
278  mDataRedirecter->GetOutput()->GetScalarRange(srange);
279  }
280 
281  mTexture->GetLookupTable()->SetRange(srange[0], srange[1]);
282  mTexture->MapColorScalarsThroughLookupTableOn();
283  }
284  else
285  {
286  mTexture->MapColorScalarsThroughLookupTableOff();
287  }
288 }
289 
292 void VideoGraphics::setLookupTable()
293 {
294  // applies only to mask:
295  // Create a lut of size at least equal to the data range. Set the tableRange[0] to zero.
296  // This will force input zero to be mapped onto the first table value (the transparent one),
297  // and inputs [1, -> > is mapped to larger values, not transparent.
298  // In order to create a window-level function, manually build a table.
299 
300  //make a default system set lookuptable, grayscale...
301  vtkLookupTablePtr lut = vtkLookupTablePtr::New();
302  lut->SetNumberOfTableValues(1000); // large enough to give resolution even for ct images.
303  //lut->SetTableRange (0, 1024); // the window of the input
304  lut->SetTableRange (0, 255); // the window of the input - must be reset according to data
305  lut->SetSaturationRange (0, 0);
306  lut->SetHueRange (0, 0);
307  lut->SetValueRange (0, 1);
308  lut->SetRampToLinear();
309  lut->Build();
310 
311  if (mInputMask)
312  {
313  lut->SetTableValue(0, 0, 0, 0, 0); // set the lowest value to transparent. This will make the masked values transparent, but nothing else
314  }
315 
316  lut->Modified();
317  mLUT = lut;
318 }
319 
320 bool VideoGraphics::inputImageIsEmpty()
321 {
322  if (mInputVideo == NULL)
323  return true;
324 // mInputVideo->Update();
325  //Don't do anything if we get an empty image
326  int* dim = mInputVideo->GetDimensions();
327  if(dim[0] == 0 || dim[1] == 0)
328  return true;
329 
330  return false;
331 }
332 
333 } // namespace cx
vtkSmartPointer< class vtkMatrix4x4 > vtkMatrix4x4Ptr
Definition: cxMathBase.h:58
vtkSmartPointer< class vtkActor > vtkActorPtr
void setActorUserMatrix(vtkMatrix4x4Ptr rMu)
void setClip(vtkPolyDataPtr sector)
bool similar(const DoubleBoundingBox3D &a, const DoubleBoundingBox3D &b, double tol)
void setFlipVertical(bool on)
vtkSmartPointer< class vtkPolyData > vtkPolyDataPtr
void setVisibility(bool visible)
vtkSmartPointer< class vtkLookupTable > vtkLookupTablePtr
vtkActorPtr getActor()
void setInputVideo(vtkImageDataPtr video)
void setMask(vtkImageDataPtr mask)
vtkSmartPointer< class vtkImageData > vtkImageDataPtr