X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?a=blobdiff_plain;f=bbtk_creaVtk_PKG%2Fsrc%2FbbcreaVtkCreateMeshFromPoints.cxx;h=a6948c45ee344c4fe7d6f3966b8ec98ba0df7242;hb=14c778f3e67bad3258fc976eaa66ab8953bdb78e;hp=eee1bd2e1f515cdf2d4acc9bb0d052499ab1a28e;hpb=3e64ae6ef5cf12ca3f96264596932abf530a1222;p=creaVtk.git diff --git a/bbtk_creaVtk_PKG/src/bbcreaVtkCreateMeshFromPoints.cxx b/bbtk_creaVtk_PKG/src/bbcreaVtkCreateMeshFromPoints.cxx index eee1bd2..a6948c4 100644 --- a/bbtk_creaVtk_PKG/src/bbcreaVtkCreateMeshFromPoints.cxx +++ b/bbtk_creaVtk_PKG/src/bbcreaVtkCreateMeshFromPoints.cxx @@ -5,6 +5,7 @@ #include "bbcreaVtkPackage.h" #include "vtkTriangleStrip.h" +#include namespace bbcreaVtk { @@ -31,17 +32,16 @@ void CreateMeshFromPoints::Process() // bbSetOutputOut( bbGetInputIn() ); // std::cout << "Output value = " < lstX = bbGetInputLstX(); std::vector lstY = bbGetInputLstY(); std::vector lstZ = bbGetInputLstZ(); std::vector lstIndexs = bbGetInputLstIndexs(); - if ( (lstIndexs.size()<=1) || (lstX.size()==0) || (lstX.size()!=lstY.size()) || (lstY.size()!=lstZ.size()) ) { - printf("Warnning! CreateMeshFromPoints::Process: List of points X Y Z and LstIndexes is not correct\n"); + printf("PG CreateMeshFromPoints::Process: List of points X Y Z and LstIndexes is not correct\n"); bbSetOutputOut(NULL); } else { - printf("EED CreateMeshFromPoints::Process initial=%d final=%d\n" , lstIndexs[0] , lstIndexs[ lstIndexs.size()-1 ] ); int ii,sizeSegment1,sizeSegment2; int endSegment; // vtkSmartPointer points = vtkSmartPointer::New(); @@ -84,7 +84,20 @@ void CreateMeshFromPoints::Process() iGeneral=iGeneral+sizeSegment1; cells->InsertNextCell(triangleStrip); } //for LstIndexs - + + + if(bbGetInputCloseSurface()){ + //false = Open Contour + //true = Closed Contour + if(bbGetInputOpenClose()){ + CloseContourSides(lstIndexs, true); + } + else{ + CloseOpenContourSurface(lstIndexs); + } + } + + // vtkPolyData *polydata = vtkPolyData::New(); if (polydata!=NULL) polydata->Delete(); polydata = vtkPolyData::New(); @@ -102,7 +115,206 @@ void CreateMeshFromPoints::Process() triangle->Update(); bbSetOutputOut( clean->GetOutput() ); }// if listXYZ size + //printf("PG CreateMeshFromPoints::Process: End\n"); +} + +/** +* Closes the sides of the contour +* iterates in one way or the other, depending on the order of the points and calculated vectors. +* uPointOrder: Points are order in a U shape +* lstIndexs: number of points on each spline +*/ +void CreateMeshFromPoints::CloseContourSides(std::vector lstIndexs, bool uPointOrder){ + int sizeLstIdexes = lstIndexs.size(); + int sizePoints = bbGetInputLstX().size(); + + int firstIndex, end, centroidId, numPointsFace, contraryId; + int increment = uPointOrder?1:sizeLstIdexes; + double centroid[3]; + + for(int facesIdx = 0; facesIdx < 2; facesIdx++){ + std::fill(std::begin(centroid), std::end(centroid), 0); + if(facesIdx == 0){ + firstIndex = 0; + numPointsFace = uPointOrder?lstIndexs[0]: sizeLstIdexes; + end = uPointOrder?firstIndex + numPointsFace:sizePoints - lstIndexs[sizeLstIdexes - 1] + 1; + contraryId = sizePoints-1; + } + else{ + firstIndex = uPointOrder?sizePoints - lstIndexs[sizeLstIdexes-1]:lstIndexs[0]-1; + numPointsFace = uPointOrder?lstIndexs[sizeLstIdexes-1]:sizeLstIdexes; + end = uPointOrder?firstIndex + numPointsFace:sizePoints; + contraryId = 0; + } + if(numPointsFace > 1){ + double lastPoint[3] = {}; + bool validCentroid = CalcValidCentroid(centroid, firstIndex, end, increment, numPointsFace); + if(validCentroid){ + bool normalOrder = isPointingCorrectly(firstIndex, firstIndex+increment, centroid, contraryId); + centroidId = points->InsertNextPoint(centroid[0], centroid[1], centroid[2]); + vtkSmartPointer triangleStrip1 = vtkSmartPointer::New(); + triangleStrip1->GetPointIds()->SetNumberOfIds(numPointsFace*2+1); + if(normalOrder){ //(facesIdx == 0 && uPointOrder) || (facesIdx == 1 && !uPointOrder)){ + int initial = firstIndex; + int triangleIndex = 0; + for(int index = initial; index < end; index+=increment){ + triangleStrip1->GetPointIds()->SetId(triangleIndex,index); + if(index+increment >= end){ + triangleStrip1->GetPointIds()->SetId(triangleIndex+1,initial); + triangleStrip1->GetPointIds()->SetId(triangleIndex+2,centroidId); + } + else{ + triangleStrip1->GetPointIds()->SetId(triangleIndex+1,centroidId); + } + triangleIndex+=2; + } + cells->InsertNextCell(triangleStrip1); + } + else{ + int initial = firstIndex-1; + int triangleIndex = 0; + int triangleStripStart = end-1; + for(int index = triangleStripStart; index > initial; index-=increment){ + triangleStrip1->GetPointIds()->SetId(triangleIndex,index); + if(index-increment <= initial){ + triangleStrip1->GetPointIds()->SetId(triangleIndex+1,triangleStripStart); + triangleStrip1->GetPointIds()->SetId(triangleIndex+2,centroidId); + } + else{ + triangleStrip1->GetPointIds()->SetId(triangleIndex+1,centroidId); + } + triangleIndex+=2; + } + cells->InsertNextCell(triangleStrip1); + } + }//if validCentroid + }//if numPointsFace + }//for facesIdx + +} + +/** +* Checks if the normal from firstPointId, secPointId and centroid points away +* from the vector centroid to contrPointId. +* Used to check that the order used to create the new polygons is correct. +*/ +bool CreateMeshFromPoints::isPointingCorrectly( int firstPointId, int secPointId, double(¢roid)[3], int contrPointId) { + + double firstPoint[3], secPoint[3], contrPoint[3]; + points->GetPoint(firstPointId, firstPoint); + points->GetPoint(secPointId, secPoint); + + double firstVect[3], secVect[3], normal[3], contrVect[3]; + + vtkMath::Subtract(firstPoint, centroid, firstVect); + vtkMath::Subtract(secPoint, centroid, secVect); + + points->GetPoint(contrPointId, contrPoint); + vtkMath::Subtract(contrPoint, centroid, contrVect); + + vtkMath::Cross(firstVect, secVect, normal); + double dotCalc; + dotCalc = vtkMath::Dot(normal, contrVect); + + return dotCalc<0; } + +/** +* Checks if points on each side of the shapes represent a curve. +*/ +bool CreateMeshFromPoints::CheckLinePointOrder(){ + int sizePoints = bbGetInputLstX().size(); + std::vector lstIndexs = bbGetInputLstIndexs(); + double point1[3], point2[3], point3[3]; + double center[3]; + double firstRadiusSum = 0; + double secondRadiusSum = 0; + for(int i = 0; i < lstIndexs[0] && lstIndexs[0] > 3; i+=3){ + if(i+3 <= lstIndexs[0]){ + points->GetPoint(i, point1); + points->GetPoint(i+1, point2); + points->GetPoint(i+2, point3); + firstRadiusSum += vtkMath::Solve3PointCircle(point1, point2, point3, center); + } + } + + for(int i = 0; i < sizePoints && lstIndexs.size() > 3; i+=(lstIndexs[0]*3)){ + if(i+(3*lstIndexs[0]) <= sizePoints){ + points->GetPoint(i, point1); + points->GetPoint(i+lstIndexs[0], point2); + points->GetPoint(i+(2*lstIndexs[0]), point3); + secondRadiusSum += vtkMath::Solve3PointCircle(point1, point2, point3, center); + } + } + + return firstRadiusSum > secondRadiusSum; +} + +/** +* Closes an open contour +* lstIndexs: number of points on each spline +*/ +void CreateMeshFromPoints::CloseOpenContourSurface(std::vector lstIndexs){ + int sizeLstIdexes = lstIndexs.size(); + int sizeLstX = bbGetInputLstX().size(); + bool linePointOrder = CheckLinePointOrder(); + CloseContourSides(lstIndexs, !linePointOrder); + CloseContourBottom(!linePointOrder); +} + +/** +* Calculates centroid. +* centroid: array to store calculation +* start: start index of points to use +* end: end index of points to use +* increment: increment to be used in point iteration +* numPoints: number of points used to calculate the centroid. +* Returns a bool indicating the validity of the centroid calculated. +* False = invalid centroid = all points are the same. +*/ +bool CreateMeshFromPoints::CalcValidCentroid(double(¢roid)[3], int start, int end, int increment, int numPoints){ + double currPoint[3] = {}, prevPoint[3] = {}; + bool samePoint = true; + for(int i = start; i < end; i+=increment){ + points->GetPoint(i, currPoint); + if(samePoint && (currPoint[0] != prevPoint[0] || currPoint[1] != prevPoint[1] || currPoint[2] != prevPoint[2])){ + samePoint = false; + } + centroid[0] += currPoint[0]; + centroid[1] += currPoint[1]; + centroid[2] += currPoint[2]; + std::copy(std::begin(currPoint), std::end(currPoint), prevPoint); + } + centroid[0] /= numPoints; + centroid[1] /= numPoints; + centroid[2] /= numPoints; + + return !samePoint; +} + +/** +* Closes the bottom of the given countour. +* Should only be used when its an open contour. +* uPointOrder: points are ordered in U shape +*/ +void CreateMeshFromPoints::CloseContourBottom(bool uPointOrder){ + std::vector lstIndexs = bbGetInputLstIndexs(); + int sizeLstIdexes = lstIndexs.size(); + int sizeLstX = bbGetInputLstX().size(); + + vtkSmartPointer triangleStripBottom = vtkSmartPointer::New(); + triangleStripBottom->GetPointIds()->SetNumberOfIds(sizeLstIdexes*2); + int triangleIndex = 0, currentId = 0, nextId = 0; + for(int splineIndex = 0; splineIndex < sizeLstIdexes;splineIndex++){ + triangleStripBottom->GetPointIds()->SetId(triangleIndex, currentId); + nextId = uPointOrder?currentId + lstIndexs[splineIndex] - 1:sizeLstX - sizeLstIdexes + splineIndex; + triangleStripBottom->GetPointIds()->SetId(triangleIndex+1, nextId); + triangleIndex+=2; + currentId = uPointOrder?nextId + 1: splineIndex+1; + } + cells->InsertNextCell(triangleStripBottom); +} + //===== // 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) //===== @@ -112,6 +324,8 @@ void CreateMeshFromPoints::bbUserSetDefaultValues() // SET HERE THE DEFAULT INPUT/OUTPUT VALUES OF YOUR BOX // Here we initialize the input 'In' to 0 // bbSetInputIn(0); + bbSetInputCloseSurface(false); + bbSetInputOpenClose(false); points = NULL; cells = NULL; polydata = NULL;