lib/Surface.cxx

   1 /*
   2 # ---------------------------------------------------------------------
   3 #
   4 # Copyright (c) CREATIS (Centre de Recherche en Acquisition et Traitement de l'Image
   5 #                        pour la Santé)
   6 # Authors : Eduardo Davila, Frederic Cervenansky, Claire Mouton
   7 # Previous Authors : Laurent Guigues, Jean-Pierre Roux
   8 # CreaTools website : www.creatis.insa-lyon.fr/site/fr/creatools_accueil
   9 #
  10 #  This software is governed by the CeCILL-B license under French law and
  11 #  abiding by the rules of distribution of free software. You can  use,
  12 #  modify and/ or redistribute the software under the terms of the CeCILL-B
  13 #  license as circulated by CEA, CNRS and INRIA at the following URL
  14 #  http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html
  15 #  or in the file LICENSE.txt.
  16 #
  17 #  As a counterpart to the access to the source code and  rights to copy,
  18 #  modify and redistribute granted by the license, users are provided only
  19 #  with a limited warranty  and the software's author,  the holder of the
  20 #  economic rights,  and the successive licensors  have only  limited
  21 #  liability.
  22 #
  23 #  The fact that you are presently reading this means that you have had
  24 #  knowledge of the CeCILL-B license and that you accept its terms.
  25 # ------------------------------------------------------------------------      */
  26
  27 #include "vtkImageData.h"
  28 #include "vtkImageCast.h"
  29 #include "vtkActor.h"
  30 #include "vtkPolyDataMapper.h"
  31 #include "vtkPolyData.h"
  32 #include "vtkProperty.h"
  33 #include "vtkFloatArray.h"
  34 #include "vtkType.h"
  35 #include "vtkDataSetMapper.h"
  36
  37 #include "Surface.h"
  38
  39 #include <iostream>
  40 #include <fstream>
  41 #include <string>
  42 #include <vector>
  43
  44 Surface::Surface(vtkImageData* imageData, int ZHeight, std::string iColor)
  45 {
  46         surfaceResult= vtkActor::New();
  47         height=ZHeight;
  48         color=iColor;
  49         //Original image type this case is an unsigned char (3)
  50         imageType=imageData->GetScalarType();
  51
  52         //substracting the image
  53         createSurface(imageData);
  54 }
  55
  56 Surface::~Surface()
  57 {
  58         if(surfaceResult!=NULL)surfaceResult->Delete();
  59 }
  60
  61 //----------------------------------------------------------------------------
  62 // Methods
  63 //----------------------------------------------------------------------------
  64
  65
  66 /*
  67 Calculate the new image and save it in the attribute imageResult
  68 it is used if the user had given the imageData
  69 */
  70 void Surface::createSurface(vtkImageData* imageData)
  71 {
  72         //dimensions of the image (extent)
  73         int ext[6];
  74         //setting the dimensionality (1d or 2d or 3d )
  75     int newDim[3];
  76         //image spacing
  77     double spc[3];
  78
  79         //getting the information from the original image
  80         imageData->GetSpacing(spc);
  81         imageData->GetExtent(ext);
  82
  83         //this a 2d image
  84         newDim[0]=ext[1]-ext[0]+1;
  85     newDim[1]=ext[3]-ext[2]+1;
  86     newDim[2]=1;// in general it is ext[5]-ext[4]+1
  87
  88
  89         //initializing the image that represents the substracted image
  90         //initialize(newDim,spc);
  91         //Time to substract
  92         surface(imageData);
  93 }
  94
  95 /*
  96          Setting the values for the
  97 */
  98 void Surface::surface(vtkImageData* imageData)
  99 {
 100         /*
 101                 images pointers
 102         */
 103         surfacePoints = vtkPoints::New();
 104         surfaceCells = vtkCellArray::New();
 105
 106         if(imageType == VTK_CHAR)
 107         {
 108                 // pointers to get into the image
 109                 char* dataImagePointer=NULL;
 110
 111                 char max = VTK_CHAR_MAX;
 112
 113                 surfaceByType(dataImagePointer, imageData, max);
 114         }
 115         else if(imageType == VTK_SIGNED_CHAR)
 116         {
 117                 // pointers to get into the image
 118                 signed char* dataImagePointer=NULL;
 119
 120                 signed char max = VTK_SIGNED_CHAR_MAX;
 121
 122                 surfaceByType(dataImagePointer, imageData, max);
 123         }
 124         else if(imageType == VTK_UNSIGNED_CHAR)
 125         {
 126                 // pointers to get into the image
 127                 unsigned char* dataImagePointer=NULL;
 128
 129                 unsigned char max = VTK_UNSIGNED_CHAR_MAX;
 130
 131                 surfaceByType(dataImagePointer, imageData, max);
 132         }
 133         else if(imageType == VTK_SHORT)
 134         {
 135                 // pointers to get into the image
 136                 short* dataImagePointer=NULL;
 137
 138                 short max = VTK_SHORT_MAX;
 139
 140                 surfaceByType(dataImagePointer, imageData, max);
 141         }
 142         else if(imageType == VTK_UNSIGNED_SHORT)
 143         {
 144                 // pointers to get into the image
 145                 unsigned short* dataImagePointer=NULL;
 146
 147                 unsigned short max = VTK_UNSIGNED_SHORT_MAX;
 148
 149                 surfaceByType(dataImagePointer, imageData, max);
 150         }
 151         else if(imageType == VTK_INT)
 152         {
 153                 // pointers to get into the image
 154                 int* dataImagePointer=NULL;
 155
 156                 int max = VTK_INT_MAX;
 157
 158                 surfaceByType(dataImagePointer, imageData, max);
 159         }
 160         else if(imageType == VTK_UNSIGNED_INT)
 161         {
 162                 // pointers to get into the image
 163                 unsigned int* dataImagePointer=NULL;
 164
 165                 unsigned int max = VTK_UNSIGNED_INT_MAX;
 166
 167                 surfaceByType(dataImagePointer, imageData, max);
 168         }
 169         else if(imageType == VTK_LONG)
 170         {
 171                 // pointers to get into the image
 172                 long* dataImagePointer=NULL;
 173
 174                 long max = VTK_LONG_MAX;
 175
 176                 surfaceByType(dataImagePointer, imageData, max);
 177         }
 178         else if(imageType == VTK_UNSIGNED_LONG)
 179         {
 180                 // pointers to get into the image
 181                 unsigned long* dataImagePointer=NULL;
 182
 183                 unsigned long max = VTK_UNSIGNED_LONG_MAX;
 184
 185                 surfaceByType(dataImagePointer, imageData, max);
 186         }
 187         else if(imageType == VTK_FLOAT)
 188         {
 189                 // pointers to get into the image
 190                 float* dataImagePointer=NULL;
 191
 192                 float max = VTK_FLOAT_MAX;
 193
 194                 surfaceByType(dataImagePointer, imageData, max);
 195         }
 196         else if(imageType == VTK_DOUBLE)
 197         {
 198                 // pointers to get into the image
 199                 double* dataImagePointer=NULL;
 200
 201                 double max = VTK_DOUBLE_MAX;
 202
 203                 surfaceByType(dataImagePointer, imageData, max);
 204         }
 205
 206         vtkPolyData* surfaceData = vtkPolyData::New();
 207         surfaceData->SetPolys(surfaceCells);
 208         surfaceData->SetPoints(surfacePoints);
 209         surfaceData->Update();
 210
 211         vtkPolyDataMapper* surfaceMapper = vtkPolyDataMapper::New();
 212         surfaceMapper->SetInput(surfaceData);
 213         surfaceMapper->Update();
 214
 215     surfaceResult->SetMapper(surfaceMapper);
 216         surfaceResult->GetProperty()->SetOpacity(1.0);
 217
 218         if (color == "RED")
 219         {
 220                 surfaceResult->GetProperty()->SetColor(1,0,0);
 221         }
 222         else if (color == "BLUE")
 223         {
 224                 surfaceResult->GetProperty()->SetColor(0,0,1);
 225         }
 226         else if (color == "GREEN")
 227         {
 228                 surfaceResult->GetProperty()->SetColor(0,1,0);
 229         }
 230         else
 231         {
 232                 surfaceResult->GetProperty()->SetColor(1,1,1);
 233         }
 234 }
 235
 236 /*
 237 Template for constructing the surface by image type
 238 */
 239 template <class T>
 240 void Surface::surfaceByType(T* dataImagePointer, vtkImageData* imageData, T max)
 241 {
 242         int counter=0;
 243
 244         // we start where the  image starts
 245         dataImagePointer=(T*)imageData->GetScalarPointer(0,0,0);
 246
 247         /*
 248          Image Size
 249         */
 250         int ext[6];
 251         imageData->GetExtent(ext);
 252         int sx,sy,sz;
 253         sx=ext[1]-ext[0]+1;
 254         sy=ext[3]-ext[2]+1;
 255         sz=ext[5]-ext[4]+1;
 256
 257         //-----------------
 258         //A3
 259         //-----------------
 260         //walking in the image
 261         int i=0,j=0,k=0;
 262         double sum1=0;
 263         //double sum2=0,sum3=0,sum4=0;  // JPR : unused
 264         for(i=0;i<sx;i++)
 265         {
 266                 for(j=0;j<sy;j++)
 267                 {
 268                         for(k=0;k<sz;k++)
 269                         {
 270
 271                                 // we get the pointer to the position (i,j,k)y that way we can get the position of the point in the surface
 272                                 dataImagePointer=(T*)imageData->GetScalarPointer(i,j,k);
 273
 274                                 sum1=(T)(dataImagePointer[0]) + (T)(dataImagePointer[1]) + (T)(dataImagePointer[2]);
 275                                 sum1=sum1/(3*max);
 276
 277                                 surfacePoints->InsertPoint(counter, i, j, sum1*height);
 278
 279                                 counter ++;
 280                         }
 281                 }
 282         }
 283
 284         //This cycle creates the cells of the surface
 285         int n =0;
 286         for(i=0;i<sx-1;i++)
 287         {
 288                 for(j=0;j<sy-1;j++)
 289                 {
 290                         for(k=0;k<sz;k++)
 291                         {
 292                                 surfaceCells->InsertNextCell(3);
 293                                 surfaceCells->InsertCellPoint(n);
 294                                 surfaceCells->InsertCellPoint(n+1);
 295                                 surfaceCells->InsertCellPoint(n+sy+1);
 296
 297                                 surfaceCells->InsertNextCell(3);
 298                                 surfaceCells->InsertCellPoint(n);
 299                                 surfaceCells->InsertCellPoint(n+sy+1);
 300                                 surfaceCells->InsertCellPoint(n+sy);
 301
 302                                 if(j<sy-2)
 303                                 {
 304                                         n++;
 305                                 }
 306                                 else
 307                                 {
 308                                         n=n+2;
 309                                 }
 310
 311                         }
 312                 }
 313         }
 314 }
 315
 316 /*
 317 Returns the filtered image
 318 */
 319 vtkActor* Surface::getSurface()
 320 {
 321         return surfaceResult;
 322 }
 323