bbtk_creaVtk_PKG/src/bbcreaVtkCreateMeshFromPoints.cxx

   1 //=====
   2 // Before editing this file, make sure it's a file of your own (i.e.: it wasn't generated from xml description; if so : your modifications will be lost)
   3 //=====
   4 #include "bbcreaVtkCreateMeshFromPoints.h"
   5 #include "bbcreaVtkPackage.h"
   6
   7 #include "vtkTriangleStrip.h"
   8 #include <vtkMath.h>
   9
  10 namespace bbcreaVtk
  11 {
  12
  13 BBTK_ADD_BLACK_BOX_TO_PACKAGE(creaVtk,CreateMeshFromPoints)
  14 BBTK_BLACK_BOX_IMPLEMENTATION(CreateMeshFromPoints,bbtk::AtomicBlackBox);
  15 //=====
  16 // Before editing this file, make sure it's a file of your own (i.e.: it wasn't generated from xml description; if so : your modifications will be lost)
  17 //=====
  18 void CreateMeshFromPoints::Process()
  19 {
  20
  21 // THE MAIN PROCESSING METHOD BODY
  22 //   Here we simply set the input 'In' value to the output 'Out'
  23 //   And print out the output value
  24 // INPUT/OUTPUT ACCESSORS ARE OF THE FORM :
  25 //    void bbSet{Input|Output}NAME(const TYPE&)
  26 //    const TYPE& bbGet{Input|Output}NAME() const
  27 //    Where :
  28 //    * NAME is the name of the input/output
  29 //      (the one provided in the attribute 'name' of the tag 'input')
  30 //    * TYPE is the C++ type of the input/output
  31 //      (the one provided in the attribute 'type' of the tag 'input')
  32
  33 //    bbSetOutputOut( bbGetInputIn() );
  34 //    std::cout << "Output value = " <<bbGetOutputOut() << std::endl;
  35
  36                 std::vector<double> lstX                = bbGetInputLstX();
  37                 std::vector<double> lstY                = bbGetInputLstY();
  38                 std::vector<double> lstZ                = bbGetInputLstZ();
  39                 std::vector<int> lstIndexs              = bbGetInputLstIndexs();
  40                 if ( (lstIndexs.size()<=1) || (lstX.size()==0) || (lstX.size()!=lstY.size()) || (lstY.size()!=lstZ.size()) )
  41                 {
  42                         printf("PG CreateMeshFromPoints::Process: List of points X Y Z  and LstIndexes is not correct\n");
  43                         bbSetOutputOut(NULL);
  44                 } else  {
  45                         int ii,sizeSegment1,sizeSegment2;
  46                         int endSegment;
  47 //                      vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New();
  48                         if (points!=NULL) points->Delete();
  49                         points = vtkPoints::New();
  50                         int i,sizeLstX  =       lstX.size();
  51                         for (i=0;i<sizeLstX;i++)
  52                         {
  53                                 points->InsertNextPoint(lstX[i],lstY[i],lstZ[i]);
  54                         } // for i
  55 //                      vtkSmartPointer<vtkCellArray> cells = vtkSmartPointer<vtkCellArray>::New();
  56                         if (cells!=NULL) cells->Delete();
  57                         cells = vtkCellArray::New();
  58                         int maxElements;
  59                         int maxSegment1,maxSegment2;
  60                         int iSeg1,iSeg2;
  61                         int iGeneral    =       0;
  62                         int     sizeLstIdexes=lstIndexs.size();
  63                         for (i=0; i<sizeLstIdexes-1; i++ )
  64                         {
  65                                 sizeSegment1 = lstIndexs[i];
  66                                 sizeSegment2 = lstIndexs[i+1];
  67                                 vtkSmartPointer<vtkTriangleStrip> triangleStrip = vtkSmartPointer<vtkTriangleStrip>::New();
  68                                 triangleStrip->GetPointIds()->SetNumberOfIds(sizeSegment1+sizeSegment2);
  69                                 maxElements=sizeSegment1;
  70                                 if (maxElements<sizeSegment2) maxElements=sizeSegment2;
  71                                 maxSegment1     = iGeneral+sizeSegment1;
  72                                 maxSegment2     = iGeneral+sizeSegment1+sizeSegment2;
  73                                 iSeg1           = iGeneral;
  74                                 iSeg2           = iGeneral+sizeSegment1;
  75                                 for (ii=0; ii<maxElements; ii++)
  76                                 {
  77                                         triangleStrip->GetPointIds()->SetId(ii*2  ,iSeg1);
  78                                         triangleStrip->GetPointIds()->SetId(ii*2+1,iSeg2);
  79                                         iSeg1++;
  80                                         iSeg2++;
  81                     if (iSeg1>=maxSegment1) { iSeg1=maxSegment1-1; }
  82                     if (iSeg2>=maxSegment2) { iSeg2=maxSegment2-1; }
  83                                 } // for ii
  84                                 iGeneral=iGeneral+sizeSegment1;
  85                                 cells->InsertNextCell(triangleStrip);
  86                         } //for  LstIndexs
  87
  88
  89                         if(bbGetInputCloseSurface()){
  90                                 //false = Open Contour
  91                                 //true = Closed Contour
  92                                 if(bbGetInputOpenClose()){
  93                                         CloseContourSides(lstIndexs, true);
  94                                 }
  95                                 else{
  96                                         CloseOpenContourSurface(lstIndexs);
  97                                 }
  98                         }
  99
 100 //                      vtkPolyData *polydata = vtkPolyData::New();
 101                         if (polydata!=NULL) polydata->Delete();
 102                         polydata = vtkPolyData::New();
 103                         polydata->SetPoints(points);
 104                         polydata->SetStrips(cells);
 105 //                      vtkCleanPolyData *clean=vtkCleanPolyData::New();
 106                         if (clean!=NULL) clean->Delete();
 107                         clean = vtkCleanPolyData::New();
 108                         clean->SetInputData(polydata);
 109                         clean->Update();
 110 //                      vtkTriangleFilter *triangle = vtkTriangleFilter::New();
 111                         if (triangle!=NULL) triangle->Delete();
 112                         triangle = vtkTriangleFilter::New();
 113                         triangle->SetInputData( clean->GetOutput() );
 114                         triangle->Update();
 115             bbSetOutputOut( triangle->GetOutput() );
 116             //            bbSetOutputOut( clean->GetOutput() );
 117                 }// if listXYZ size
 118                 //printf("PG CreateMeshFromPoints::Process: End\n");
 119 }
 120
 121 /**
 122 * Closes the sides of the contour
 123 * iterates in one way or the other, depending on the order of the points and calculated vectors.
 124 * uPointOrder: Points are order in a U shape
 125 * lstIndexs: number of points on each spline
 126 */
 127 void CreateMeshFromPoints::CloseContourSides(std::vector<int> lstIndexs, bool uPointOrder){
 128         int     sizeLstIdexes = lstIndexs.size();
 129         int sizePoints = bbGetInputLstX().size();
 130
 131         int firstIndex, end, centroidId, numPointsFace, contraryId;
 132         int increment = uPointOrder?1:sizeLstIdexes;
 133         double centroid[3];
 134
 135         for(int facesIdx = 0; facesIdx < 2; facesIdx++){
 136                 std::fill(std::begin(centroid), std::end(centroid), 0);
 137                 if(facesIdx == 0){
 138                         firstIndex = 0;
 139                         numPointsFace = uPointOrder?lstIndexs[0]: sizeLstIdexes;
 140                         end = uPointOrder?firstIndex + numPointsFace:sizePoints - lstIndexs[sizeLstIdexes - 1] + 1;
 141                         contraryId = sizePoints-1;
 142                 }
 143                 else{
 144                         firstIndex = uPointOrder?sizePoints - lstIndexs[sizeLstIdexes-1]:lstIndexs[0]-1;
 145                         numPointsFace = uPointOrder?lstIndexs[sizeLstIdexes-1]:sizeLstIdexes;
 146                         end = uPointOrder?firstIndex + numPointsFace:sizePoints;
 147                         contraryId = 0;
 148                 }
 149                 if(numPointsFace > 1){
 150                         double lastPoint[3] = {};
 151                         bool validCentroid = CalcValidCentroid(centroid, firstIndex, end, increment, numPointsFace);
 152                         if(validCentroid){
 153                                 bool normalOrder    = isPointingCorrectly(firstIndex, firstIndex+increment, centroid, contraryId);
 154                                 centroidId          = points->InsertNextPoint(centroid[0], centroid[1], centroid[2]);
 155                                 vtkSmartPointer<vtkTriangleStrip> triangleStrip1 = vtkSmartPointer<vtkTriangleStrip>::New();
 156                                 triangleStrip1->GetPointIds()->SetNumberOfIds(numPointsFace*2+1);
 157                                 if( !normalOrder )
 158                 {       //(facesIdx == 0 && uPointOrder) || (facesIdx == 1 && !uPointOrder)){
 159                                         int initial = firstIndex;
 160                                         int triangleIndex = 0;
 161                                         for(int index = initial; index < end; index+=increment){
 162                                                 triangleStrip1->GetPointIds()->SetId(triangleIndex,index);
 163                                                 if(index+increment >= end){
 164                                                         triangleStrip1->GetPointIds()->SetId(triangleIndex+1,initial);
 165                                                         triangleStrip1->GetPointIds()->SetId(triangleIndex+2,centroidId);
 166                                                 }
 167                                                 else{
 168                                                         triangleStrip1->GetPointIds()->SetId(triangleIndex+1,centroidId);
 169                                                 }
 170                                                 triangleIndex+=2;
 171                                         }
 172                                         cells->InsertNextCell(triangleStrip1);
 173                                 } else {
 174                                         int initial = firstIndex-1;
 175                                         int triangleIndex = 0;
 176                                         int triangleStripStart = end-1;
 177                                         for(int index = triangleStripStart; index > initial; index-=increment){
 178                                                 triangleStrip1->GetPointIds()->SetId(triangleIndex,index);
 179                                                 if(index-increment <= initial){
 180                                                         triangleStrip1->GetPointIds()->SetId(triangleIndex+1,triangleStripStart);
 181                                                         triangleStrip1->GetPointIds()->SetId(triangleIndex+2,centroidId);
 182                                                 }
 183                                                 else{
 184                                                         triangleStrip1->GetPointIds()->SetId(triangleIndex+1,centroidId);
 185                                                 }
 186                                                 triangleIndex+=2;
 187                                         }
 188                                         cells->InsertNextCell(triangleStrip1);
 189                                 }
 190                         }//if validCentroid
 191                 }//if numPointsFace
 192         }//for facesIdx
 193
 194 }
 195
 196 /**
 197 * Checks if the normal from firstPointId, secPointId and centroid points away
 198 * from the vector centroid to contrPointId.
 199 * Used to check that the order used to create the new polygons is correct.
 200 */
 201 bool CreateMeshFromPoints::isPointingCorrectly( int firstPointId, int secPointId, double(&centroid)[3], int contrPointId) {
 202
 203         double firstPoint[3], secPoint[3], contrPoint[3];
 204         points->GetPoint(firstPointId, firstPoint);
 205         points->GetPoint(secPointId, secPoint);
 206
 207         double firstVect[3], secVect[3], normal[3], contrVect[3];
 208
 209         vtkMath::Subtract(firstPoint, centroid, firstVect);
 210         vtkMath::Subtract(secPoint, centroid, secVect);
 211
 212         points->GetPoint(contrPointId, contrPoint);
 213         vtkMath::Subtract(contrPoint, centroid, contrVect);
 214
 215         vtkMath::Cross(firstVect, secVect, normal);
 216         double dotCalc;
 217         dotCalc = vtkMath::Dot(normal, contrVect);
 218
 219         return dotCalc<0;
 220 }
 221
 222 /**
 223 * Checks if points on each side of the shapes represent a curve.
 224 */
 225 bool CreateMeshFromPoints::CheckLinePointOrder(){
 226         int sizePoints = bbGetInputLstX().size();
 227         std::vector<int> lstIndexs = bbGetInputLstIndexs();
 228         double point1[3], point2[3], point3[3];
 229         double center[3];
 230         double firstRadiusSum = 0;
 231         double secondRadiusSum = 0;
 232         for(int i = 0; i < lstIndexs[0] && lstIndexs[0] > 3; i+=3){
 233                 if(i+3 <= lstIndexs[0]){
 234                         points->GetPoint(i, point1);
 235                         points->GetPoint(i+1, point2);
 236                         points->GetPoint(i+2, point3);
 237                         firstRadiusSum += vtkMath::Solve3PointCircle(point1, point2, point3, center);
 238                 }
 239         }
 240
 241         for(int i = 0; i < sizePoints && lstIndexs.size() > 3; i+=(lstIndexs[0]*3)){
 242                 if(i+(3*lstIndexs[0]) <= sizePoints){
 243                         points->GetPoint(i, point1);
 244                         points->GetPoint(i+lstIndexs[0], point2);
 245                         points->GetPoint(i+(2*lstIndexs[0]), point3);
 246                         secondRadiusSum += vtkMath::Solve3PointCircle(point1, point2, point3, center);
 247                 }
 248         }
 249
 250         return firstRadiusSum > secondRadiusSum;
 251 }
 252
 253 /**
 254 * Closes an open contour
 255 * lstIndexs: number of points on each spline
 256 */
 257 void CreateMeshFromPoints::CloseOpenContourSurface(std::vector<int> lstIndexs){
 258         int     sizeLstIdexes = lstIndexs.size();
 259         int sizeLstX = bbGetInputLstX().size();
 260         bool linePointOrder = CheckLinePointOrder();
 261         CloseContourSides(lstIndexs, !linePointOrder);
 262         CloseContourBottom(!linePointOrder);
 263 }
 264
 265 /**
 266 * Calculates centroid.
 267 * centroid: array to store calculation
 268 * start: start index of points to use
 269 * end: end index of points to use
 270 * increment: increment to be used in point iteration
 271 * numPoints: number of points used to calculate the centroid.
 272 * Returns a bool indicating the validity of the centroid calculated.
 273 * False = invalid centroid = all points are the same.
 274 */
 275 bool CreateMeshFromPoints::CalcValidCentroid(double(&centroid)[3], int start, int end, int increment, int numPoints){
 276         double currPoint[3] = {}, prevPoint[3] = {};
 277         bool samePoint = true;
 278         for(int i = start; i < end; i+=increment){
 279                 points->GetPoint(i, currPoint);
 280                 if(samePoint && (currPoint[0] != prevPoint[0] || currPoint[1] != prevPoint[1] || currPoint[2] != prevPoint[2])){
 281                         samePoint = false;
 282                 }
 283                 centroid[0] += currPoint[0];
 284                 centroid[1] += currPoint[1];
 285                 centroid[2] += currPoint[2];
 286                 std::copy(std::begin(currPoint), std::end(currPoint), prevPoint);
 287         }
 288         centroid[0] /= numPoints;
 289         centroid[1] /= numPoints;
 290         centroid[2] /= numPoints;
 291
 292         return !samePoint;
 293 }
 294
 295 /**
 296 * Closes the bottom of the given countour.
 297 * Should only be used when its an open contour.
 298 * uPointOrder: points are ordered in U shape
 299 */
 300 void CreateMeshFromPoints::CloseContourBottom(bool uPointOrder){
 301         std::vector<int> lstIndexs = bbGetInputLstIndexs();
 302         int sizeLstIdexes = lstIndexs.size();
 303         int sizeLstX = bbGetInputLstX().size();
 304
 305         vtkSmartPointer<vtkTriangleStrip> triangleStripBottom = vtkSmartPointer<vtkTriangleStrip>::New();
 306         triangleStripBottom->GetPointIds()->SetNumberOfIds(sizeLstIdexes*2);
 307         int triangleIndex = 0, currentId = 0, nextId = 0;
 308         for(int splineIndex = 0; splineIndex < sizeLstIdexes;splineIndex++){
 309                 triangleStripBottom->GetPointIds()->SetId(triangleIndex, currentId);
 310                 nextId = uPointOrder?currentId + lstIndexs[splineIndex] - 1:sizeLstX - sizeLstIdexes + splineIndex;
 311                 triangleStripBottom->GetPointIds()->SetId(triangleIndex+1, nextId);
 312                 triangleIndex+=2;
 313                 currentId = uPointOrder?nextId + 1: splineIndex+1;
 314         }
 315         cells->InsertNextCell(triangleStripBottom);
 316 }
 317
 318 //=====
 319 // Before editing this file, make sure it's a file of your own (i.e.: it wasn't generated from xml description; if so : your modifications will be lost)
 320 //=====
 321 void CreateMeshFromPoints::bbUserSetDefaultValues()
 322 {
 323
 324 //  SET HERE THE DEFAULT INPUT/OUTPUT VALUES OF YOUR BOX
 325 //    Here we initialize the input 'In' to 0
 326 //   bbSetInputIn(0);
 327         bbSetInputCloseSurface(false);
 328         bbSetInputOpenClose(false);
 329         points          = NULL;
 330         cells           = NULL;
 331         polydata        = NULL;
 332         clean           = NULL;
 333         triangle        = NULL;
 334 }
 335 //=====
 336 // Before editing this file, make sure it's a file of your own (i.e.: it wasn't generated from xml description; if so : your modifications will be lost)
 337 //=====
 338 void CreateMeshFromPoints::bbUserInitializeProcessing()
 339 {
 340
 341 //  THE INITIALIZATION METHOD BODY :
 342 //    Here does nothing
 343 //    but this is where you should allocate the internal/output pointers
 344 //    if any
 345
 346
 347 }
 348 //=====
 349 // Before editing this file, make sure it's a file of your own (i.e.: it wasn't generated from xml description; if so : your modifications will be lost)
 350 //=====
 351 void CreateMeshFromPoints::bbUserFinalizeProcessing()
 352 {
 353
 354 //  THE FINALIZATION METHOD BODY :
 355 //    Here does nothing
 356 //    but this is where you should desallocate the internal/output pointers
 357 //    if any
 358
 359 }
 360 }
 361 // EO namespace bbcreaVtk
 362
 363