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vtkCellTypeSource.cxx
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vtkCellTypeSource.cxx
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkCellTypeSource.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkCellTypeSource.h"
#include "vtkCellType.h"
#include "vtkDataArray.h"
#include "vtkExtentTranslator.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkLagrangeCurve.h"
#include "vtkLagrangeHexahedron.h"
#include "vtkLagrangeQuadrilateral.h"
#include "vtkLagrangeTriangle.h"
#include "vtkLagrangeTetra.h"
#include "vtkLagrangeWedge.h"
#include "vtkMath.h"
#include "vtkMergePoints.h"
#include "vtkNew.h"
#include "vtkObjectFactory.h"
#include "vtkPointData.h"
#include "vtkPoints.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkUnstructuredGrid.h"
#include "vtkVector.h"
#include "vtkVectorOperators.h"
#include <map>
typedef std::map<std::pair<vtkIdType, vtkIdType>, vtkIdType> EdgeToPointMap;
vtkStandardNewMacro(vtkCellTypeSource);
namespace
{
const int NumberOf1DCellTypes = 4;
const int OneDCellTypes[NumberOf1DCellTypes] = {
VTK_LINE, VTK_QUADRATIC_EDGE, VTK_CUBIC_LINE, VTK_LAGRANGE_CURVE
};
const int NumberOf2DCellTypes = 6;
const int TwoDCellTypes[NumberOf2DCellTypes] = {
VTK_TRIANGLE, VTK_QUAD, VTK_QUADRATIC_TRIANGLE, VTK_QUADRATIC_QUAD,
VTK_LAGRANGE_TRIANGLE, VTK_LAGRANGE_QUADRILATERAL
};
const int NumberOf3DCellTypes = 11;
const int ThreeDCellTypes[NumberOf3DCellTypes] = {
VTK_TETRA, VTK_HEXAHEDRON, VTK_WEDGE, VTK_PYRAMID,
VTK_QUADRATIC_TETRA, VTK_QUADRATIC_HEXAHEDRON,
VTK_QUADRATIC_WEDGE, VTK_QUADRATIC_PYRAMID,
VTK_LAGRANGE_TETRAHEDRON, VTK_LAGRANGE_HEXAHEDRON, VTK_LAGRANGE_WEDGE
};
}
// ----------------------------------------------------------------------------
vtkCellTypeSource::vtkCellTypeSource() :
CellType(VTK_HEXAHEDRON), CellOrder(3), CompleteQuadraticSimplicialElements(false),
OutputPrecision(SINGLE_PRECISION), PolynomialFieldOrder(1)
{
for(int i=0;i<3;i++)
{
this->BlocksDimensions[i] = 1;
}
this->SetNumberOfInputPorts(0);
}
// ----------------------------------------------------------------------------
void vtkCellTypeSource::SetCellType(int cellType)
{
if (cellType == this->CellType)
{
return;
}
for(int i=0;i<NumberOf1DCellTypes;i++)
{
if(cellType == OneDCellTypes[i])
{
this->CellType = cellType;
this->Modified();
return;
}
}
for(int i=0;i<NumberOf2DCellTypes;i++)
{
if(cellType == TwoDCellTypes[i])
{
this->CellType = cellType;
this->Modified();
return;
}
}
for(int i=0;i<NumberOf3DCellTypes;i++)
{
if(cellType == ThreeDCellTypes[i])
{
this->CellType = cellType;
this->Modified();
return;
}
}
vtkWarningMacro("Cell type " << cellType << " not supported");
}
// ----------------------------------------------------------------------------
int vtkCellTypeSource::GetCellDimension()
{
for(int i=0;i<NumberOf1DCellTypes;i++)
{
if(this->CellType == OneDCellTypes[i])
{
return 1;
}
}
for(int i=0;i<NumberOf2DCellTypes;i++)
{
if(this->CellType == TwoDCellTypes[i])
{
return 2;
}
}
for(int i=0;i<NumberOf3DCellTypes;i++)
{
if(this->CellType == ThreeDCellTypes[i])
{
return 3;
}
}
return -1;
}
// ----------------------------------------------------------------------------
void vtkCellTypeSource::SetBlocksDimensions(int* dims)
{
for(int i=0;i<3;i++)
{
if(dims[i] != this->BlocksDimensions[i] && dims[i] > 0)
{
this->BlocksDimensions[i] = dims[i];
this->Modified();
}
}
}
// ----------------------------------------------------------------------------
void vtkCellTypeSource::SetBlocksDimensions(int iDim, int jDim, int kDim)
{
int dims[3] = {iDim, jDim, kDim};
this->SetBlocksDimensions(dims);
}
// ----------------------------------------------------------------------------
int vtkCellTypeSource::RequestData(
vtkInformation *vtkNotUsed(request),
vtkInformationVector **vtkNotUsed(inputVector),
vtkInformationVector *outputVector)
{
// Get the info object
vtkInformation *outInfo = outputVector->GetInformationObject(0);
// Get the output
vtkUnstructuredGrid *output = vtkUnstructuredGrid::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
int piece =
outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_PIECE_NUMBER());
int numPieces =
outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_NUMBER_OF_PIECES());
vtkNew<vtkExtentTranslator> extentTranslator;
int dimension = this->GetCellDimension();
int wholeExtent[6] = {0, this->BlocksDimensions[0], 0, 0, 0, 0};
if(dimension>1)
{
wholeExtent[3] = this->BlocksDimensions[1];
}
if(dimension>2)
{
wholeExtent[5] = this->BlocksDimensions[2];
}
int extent[6];
double bounds[6];
extentTranslator->PieceToExtentThreadSafe(
piece, numPieces, 0, wholeExtent, extent,
extentTranslator->GetSplitMode(), 0);
int numberOfPoints = 1;
for(int i=0;i<3;i++)
{
if(extent[i*2+1]!=extent[i*2])
{
numberOfPoints *= extent[i*2+1]-extent[i*2]+1;
}
bounds[i*2] = static_cast<double>(extent[i*2]);
bounds[i*2+1] = static_cast<double>(extent[i*2+1]);
}
vtkNew<vtkPoints> points;
vtkNew<vtkMergePoints> locator;
this->Locator = locator.GetPointer();
this->Locator->InitPointInsertion(points.GetPointer(), bounds);
// Set the desired precision for the points in the output.
if(this->OutputPrecision == vtkAlgorithm::DOUBLE_PRECISION)
{
points->SetDataType(VTK_DOUBLE);
}
else
{
points->SetDataType(VTK_FLOAT);
}
points->Allocate(numberOfPoints);
double coord[3];
for(int k=extent[4];k<extent[5]+1;k++)
{
coord[2] = static_cast<double>(k);
for(int j=extent[2];j<extent[3]+1;j++)
{
coord[1] = static_cast<double>(j);
for(int i=extent[0];i<extent[1]+1;i++)
{
coord[0] = static_cast<double>(i);
this->Locator->InsertNextPoint(coord);
}
}
}
output->SetPoints(points);
switch(this->CellType)
{
case VTK_LINE:
{
output->Allocate(numberOfPoints-1);
for(int i=0;i<numberOfPoints-1;i++)
{
vtkIdType ids[2] = {i, i+1};
output->InsertNextCell(VTK_LINE, 2, ids);
}
break;
}
case VTK_QUADRATIC_EDGE:
{
output->Allocate(numberOfPoints-1);
for(int i=0;i<numberOfPoints-1;i++)
{
double point1[3], point2[3];
output->GetPoint(i, point1);
output->GetPoint(i+1, point2);
for(int j=0;j<3;j++)
{
point1[j] = (point1[j]+point2[j])*.5;
}
vtkIdType midPointId = points->InsertNextPoint(point1);
vtkIdType ids[3] = {i, i+1, midPointId};
output->InsertNextCell(VTK_QUADRATIC_EDGE, 3, ids);
}
break;
}
case VTK_CUBIC_LINE:
{
output->Allocate(numberOfPoints-1);
for(int i=0;i<numberOfPoints-1;i++)
{
double point1[3], point2[3], newPoint1[3], newPoint2[3];
output->GetPoint(i, point1);
output->GetPoint(i+1, point2);
for(int j=0;j<3;j++)
{
newPoint1[j] = point1[j]*2./3.+point2[j]/3.;
newPoint2[j] = point1[j]/3.+point2[j]*2./3.;
}
vtkIdType newPointId1 = points->InsertNextPoint(newPoint1);
vtkIdType newPointId2 = points->InsertNextPoint(newPoint2);
vtkIdType ids[4] = {i, i+1, newPointId1, newPointId2};
output->InsertNextCell(VTK_CUBIC_LINE, 4, ids);
}
break;
}
case VTK_TRIANGLE:
{
this->GenerateTriangles(output, extent);
break;
}
case VTK_QUAD:
{
this->GenerateQuads(output, extent);
break;
}
case VTK_QUADRATIC_TRIANGLE:
{
this->GenerateQuadraticTriangles(output, extent);
break;
}
case VTK_QUADRATIC_QUAD:
{
this->GenerateQuadraticQuads(output, extent);
break;
}
case VTK_TETRA:
{
this->GenerateTetras(output, extent);
break;
}
case VTK_HEXAHEDRON:
{
this->GenerateHexahedron(output, extent);
break;
}
case VTK_WEDGE:
{
this->GenerateWedges(output, extent);
break;
}
case VTK_PYRAMID:
{
this->GeneratePyramids(output, extent);
break;
}
case VTK_QUADRATIC_TETRA:
{
this->GenerateQuadraticTetras(output, extent);
break;
}
case VTK_QUADRATIC_HEXAHEDRON:
{
this->GenerateQuadraticHexahedron(output, extent);
break;
}
case VTK_QUADRATIC_WEDGE:
{
this->GenerateQuadraticWedges(output, extent);
break;
}
case VTK_QUADRATIC_PYRAMID:
{
this->GenerateQuadraticPyramids(output, extent);
break;
}
case VTK_LAGRANGE_CURVE:
{
this->GenerateLagrangeCurves(output, extent);
break;
}
case VTK_LAGRANGE_TRIANGLE:
{
this->GenerateLagrangeTris(output, extent);
break;
}
case VTK_LAGRANGE_QUADRILATERAL:
{
this->GenerateLagrangeQuads(output, extent);
break;
}
case VTK_LAGRANGE_TETRAHEDRON:
{
this->GenerateLagrangeTets(output, extent);
break;
}
case VTK_LAGRANGE_HEXAHEDRON:
{
this->GenerateLagrangeHexes(output, extent);
break;
}
case VTK_LAGRANGE_WEDGE:
{
this->GenerateLagrangeWedges(output, extent);
break;
}
default:
{
vtkWarningMacro("Cell type " << this->CellType << " not supported");
}
}
this->ComputeFields(output);
this->Locator = nullptr;
return 1;
}
//----------------------------------------------------------------------------
int vtkCellTypeSource::RequestInformation(
vtkInformation *vtkNotUsed(request),
vtkInformationVector **vtkNotUsed(inputVector),
vtkInformationVector *outputVector)
{
// get the info object
vtkInformation *outInfo = outputVector->GetInformationObject(0);
outInfo->Set(CAN_HANDLE_PIECE_REQUEST(), 1);
return 1;
}
//----------------------------------------------------------------------------
void vtkCellTypeSource::GenerateTriangles(
vtkUnstructuredGrid* output, int extent[6])
{
int firstDim = extent[1]-extent[0];
int secondDim = extent[3]-extent[2];
output->Allocate(firstDim*secondDim*2);
for(int j=0;j<secondDim;j++)
{
for(int i=0;i<firstDim;i++)
{
vtkIdType ids[3] = {i+j*(firstDim+1), i+1+j*(firstDim+1),
i+(j+1)*(firstDim+1)};
output->InsertNextCell(VTK_TRIANGLE, 3, ids);
ids[0] = ids[1];
ids[1] = i+1+(j+1)*(firstDim+1);
output->InsertNextCell(VTK_TRIANGLE, 3, ids);
}
}
}
//----------------------------------------------------------------------------
void vtkCellTypeSource::GenerateQuads(
vtkUnstructuredGrid* output, int extent[6])
{
int firstDim = extent[1]-extent[0];
int secondDim = extent[3]-extent[2];
output->Allocate(firstDim*secondDim);
for(int j=0;j<secondDim;j++)
{
for(int i=0;i<firstDim;i++)
{
vtkIdType ids[4] = {
i+j*(firstDim+1), i+1+j*(firstDim+1),
i+1+(j+1)*(firstDim+1), i+(j+1)*(firstDim+1)};
output->InsertNextCell(VTK_QUAD, 4, ids);
}
}
}
//----------------------------------------------------------------------------
void vtkCellTypeSource::GenerateQuadraticTriangles(
vtkUnstructuredGrid* output, int extent[6])
{
int firstDim = extent[1]-extent[0];
int secondDim = extent[3]-extent[2];
output->Allocate(firstDim*secondDim*2);
EdgeToPointMap edgeToPointId;
for(int j=0;j<secondDim;j++)
{
for(int i=0;i<firstDim;i++)
{
vtkIdType mids[3];
std::pair<vtkIdType, vtkIdType> horizontalEdge =
std::make_pair(static_cast<vtkIdType>(i+j*(firstDim+1)),
static_cast<vtkIdType>(i+1+j*(firstDim+1)));
EdgeToPointMap::iterator it=edgeToPointId.find(horizontalEdge);
if(it==edgeToPointId.end())
{
double point1[3], point2[3];
output->GetPoint(horizontalEdge.first, point1);
output->GetPoint(horizontalEdge.second, point2);
for(int k=0;k<3;k++)
{
point1[k]=(point1[k]+point2[k])*.5;
}
vtkIdType mid=output->GetPoints()->InsertNextPoint(point1);
edgeToPointId[horizontalEdge]=mid;
mids[0] = mid;
}
else
{
mids[0] = it->second;
}
std::pair<vtkIdType, vtkIdType> verticalEdge =
std::make_pair(static_cast<vtkIdType>(i+j*(firstDim+1)),
static_cast<vtkIdType>(i+(j+1)*(firstDim+1)));
it=edgeToPointId.find(verticalEdge);
if(it==edgeToPointId.end())
{
double point1[3], point2[3];
output->GetPoint(verticalEdge.first, point1);
output->GetPoint(verticalEdge.second, point2);
for(int k=0;k<3;k++)
{
point1[k]=(point1[k]+point2[k])*.5;
}
vtkIdType mid=output->GetPoints()->InsertNextPoint(point1);
edgeToPointId[verticalEdge]=mid;
mids[2] = mid;
}
else
{
mids[2] = it->second;
}
// always need to create the point on the diagonal
double point1[3], point2[3];
output->GetPoint(i+1+j*(firstDim+1), point1);
output->GetPoint(i+(j+1)*(firstDim+1), point2);
for(int k=0;k<3;k++)
{
point1[k]=(point1[k]+point2[k])*.5;
}
vtkIdType mid=output->GetPoints()->InsertNextPoint(point1);
mids[1] = mid;
vtkIdType cellPoints[6] = {i+j*(firstDim+1), i+1+j*(firstDim+1),
i+(j+1)*(firstDim+1), mids[0],
mids[1], mids[2]};
output->InsertNextCell(VTK_QUADRATIC_TRIANGLE, 6, cellPoints);
horizontalEdge =
std::make_pair(static_cast<vtkIdType>(i+(j+1)*(firstDim+1)),
static_cast<vtkIdType>(i+1+(j+1)*(firstDim+1)));
it=edgeToPointId.find(horizontalEdge);
if(it==edgeToPointId.end())
{
output->GetPoint(horizontalEdge.first, point1);
output->GetPoint(horizontalEdge.second, point2);
for(int k=0;k<3;k++)
{
point1[k]=(point1[k]+point2[k])*.5;
}
mid=output->GetPoints()->InsertNextPoint(point1);
edgeToPointId[horizontalEdge]=mid;
mids[0] = mid;
}
else
{
mids[0] = it->second;
}
verticalEdge =
std::make_pair(static_cast<vtkIdType>(i+1+j*(firstDim+1)),
static_cast<vtkIdType>(i+1+(j+1)*(firstDim+1)));
it=edgeToPointId.find(verticalEdge);
if(it==edgeToPointId.end())
{
output->GetPoint(verticalEdge.first, point1);
output->GetPoint(verticalEdge.second, point2);
for(int k=0;k<3;k++)
{
point1[k]=(point1[k]+point2[k])*.5;
}
mid=output->GetPoints()->InsertNextPoint(point1);
edgeToPointId[verticalEdge]=mid;
mids[2] = mid;
}
else
{
mids[2] = it->second;
}
vtkIdType cellPoints2[6] = {i+1+j*(firstDim+1), i+1+(j+1)*(firstDim+1),
i+(j+1)*(firstDim+1), mids[2], mids[0], mids[1]};
output->InsertNextCell(VTK_QUADRATIC_TRIANGLE, 6, cellPoints2);
}
}
}
//----------------------------------------------------------------------------
void vtkCellTypeSource::GenerateQuadraticQuads(
vtkUnstructuredGrid* output, int extent[6])
{
int firstDim = extent[1]-extent[0];
int secondDim = extent[3]-extent[2];
output->Allocate(firstDim*secondDim);
EdgeToPointMap edgeToPointId;
for(int j=0;j<secondDim;j++)
{
for(int i=0;i<firstDim;i++)
{
vtkIdType pointIds[8] = {
i+j*(firstDim+1), i+1+j*(firstDim+1), i+1+(j+1)*(firstDim+1),
i+(j+1)*(firstDim+1), -1, -1, -1, -1};
std::pair<vtkIdType, vtkIdType> bottomEdge =
std::make_pair(pointIds[0], pointIds[1]);
EdgeToPointMap::iterator it=edgeToPointId.find(bottomEdge);
if(it==edgeToPointId.end())
{
double point1[3], point2[3];
output->GetPoint(bottomEdge.first, point1);
output->GetPoint(bottomEdge.second, point2);
for(int k=0;k<3;k++)
{
point1[k]=(point1[k]+point2[k])*.5;
}
vtkIdType mid=output->GetPoints()->InsertNextPoint(point1);
edgeToPointId[bottomEdge]=mid;
pointIds[4] = mid;
}
else
{
pointIds[4] = it->second;
}
std::pair<vtkIdType, vtkIdType> rightEdge =
std::make_pair(pointIds[1], pointIds[2]);
it=edgeToPointId.find(rightEdge);
if(it==edgeToPointId.end())
{
double point1[3], point2[3];
output->GetPoint(rightEdge.first, point1);
output->GetPoint(rightEdge.second, point2);
for(int k=0;k<3;k++)
{
point1[k]=(point1[k]+point2[k])*.5;
}
vtkIdType mid=output->GetPoints()->InsertNextPoint(point1);
edgeToPointId[rightEdge]=mid;
pointIds[5] = mid;
}
else
{
pointIds[5] = it->second;
}
std::pair<vtkIdType, vtkIdType> topEdge =
std::make_pair(pointIds[3], pointIds[2]);
it=edgeToPointId.find(topEdge);
if(it==edgeToPointId.end())
{
double point1[3], point2[3];
output->GetPoint(topEdge.first, point1);
output->GetPoint(topEdge.second, point2);
for(int k=0;k<3;k++)
{
point1[k]=(point1[k]+point2[k])*.5;
}
vtkIdType mid=output->GetPoints()->InsertNextPoint(point1);
edgeToPointId[topEdge]=mid;
pointIds[6] = mid;
}
else
{
pointIds[6] = it->second;
}
std::pair<vtkIdType, vtkIdType> leftEdge =
std::make_pair(pointIds[0], pointIds[3]);
it=edgeToPointId.find(leftEdge);
if(it==edgeToPointId.end())
{
double point1[3], point2[3];
output->GetPoint(leftEdge.first, point1);
output->GetPoint(leftEdge.second, point2);
for(int k=0;k<3;k++)
{
point1[k]=(point1[k]+point2[k])*.5;
}
vtkIdType mid=output->GetPoints()->InsertNextPoint(point1);
edgeToPointId[leftEdge]=mid;
pointIds[7] = mid;
}
else
{
pointIds[7] = it->second;
}
output->InsertNextCell(VTK_QUADRATIC_QUAD, 8, pointIds);
}
}
}
//----------------------------------------------------------------------------
void vtkCellTypeSource::GenerateTetras(
vtkUnstructuredGrid* output, int extent[6])
{
// cell dimensions
const int xDim = extent[1]-extent[0];
const int yDim = extent[3]-extent[2];
const int zDim = extent[5]-extent[4];
output->Allocate(xDim*yDim*zDim*5);
for(int k=0;k<zDim;k++)
{
for(int j=0;j<yDim;j++)
{
for(int i=0;i<xDim;i++)
{
vtkIdType hexIds[8] = {
i+j*(xDim+1)+k*(xDim+1)*(yDim+1),
i+1+j*(xDim+1)+k*(xDim+1)*(yDim+1),
i+1+(j+1)*(xDim+1)+k*(xDim+1)*(yDim+1),
i+(j+1)*(xDim+1)+k*(xDim+1)*(yDim+1),
i+j*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
i+1+j*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
i+1+(j+1)*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
i+(j+1)*(xDim+1)+(k+1)*(xDim+1)*(yDim+1)};
// add in center point
double point1[3], point2[3];
output->GetPoint(hexIds[0], point1);
output->GetPoint(hexIds[6], point2);
for(int l=0;l<3;l++)
{
point1[l] = .5*(point1[l]+point2[l]);
}
vtkIdType middlePoint =
output->GetPoints()->InsertNextPoint(point1);
vtkIdType pointIds1[4] = {hexIds[0], hexIds[1], hexIds[2], middlePoint};
output->InsertNextCell(VTK_TETRA, 4, pointIds1);
vtkIdType pointIds2[4] = {hexIds[0], hexIds[2], hexIds[3], middlePoint};
output->InsertNextCell(VTK_TETRA, 4, pointIds2);
vtkIdType pointIds3[4] = {hexIds[6], hexIds[5], hexIds[4], middlePoint};
output->InsertNextCell(VTK_TETRA, 4, pointIds3);
vtkIdType pointIds4[4] = {hexIds[6], hexIds[4], hexIds[7], middlePoint};
output->InsertNextCell(VTK_TETRA, 4, pointIds4);
vtkIdType pointIds5[4] = {hexIds[1], hexIds[5], hexIds[6], middlePoint};
output->InsertNextCell(VTK_TETRA, 4, pointIds5);
vtkIdType pointIds6[4] = {hexIds[1], hexIds[6], hexIds[2], middlePoint};
output->InsertNextCell(VTK_TETRA, 4, pointIds6);
vtkIdType pointIds7[4] = {hexIds[0], hexIds[4], hexIds[5], middlePoint};
output->InsertNextCell(VTK_TETRA, 4, pointIds7);
vtkIdType pointIds8[4] = {hexIds[0], hexIds[5], hexIds[1], middlePoint};
output->InsertNextCell(VTK_TETRA, 4, pointIds8);
vtkIdType pointIds9[4] = {hexIds[0], hexIds[3], hexIds[7], middlePoint};
output->InsertNextCell(VTK_TETRA, 4, pointIds9);
vtkIdType pointIds10[4] = {hexIds[0], hexIds[7], hexIds[4], middlePoint};
output->InsertNextCell(VTK_TETRA, 4, pointIds10);
vtkIdType pointIds11[4] = {hexIds[6], hexIds[7], hexIds[3], middlePoint};
output->InsertNextCell(VTK_TETRA, 4, pointIds11);
vtkIdType pointIds12[4] = {hexIds[6], hexIds[3], hexIds[2], middlePoint};
output->InsertNextCell(VTK_TETRA, 4, pointIds12);
}
}
}
}
//----------------------------------------------------------------------------
void vtkCellTypeSource::GenerateHexahedron(
vtkUnstructuredGrid* output, int extent[6])
{
// cell dimensions
const int xDim = extent[1]-extent[0];
const int yDim = extent[3]-extent[2];
const int zDim = extent[5]-extent[4];
output->Allocate(xDim*yDim*zDim);
for(int k=0;k<zDim;k++)
{
for(int j=0;j<yDim;j++)
{
for(int i=0;i<xDim;i++)
{
vtkIdType hexIds[8] = {
i+j*(xDim+1)+k*(xDim+1)*(yDim+1),
i+1+j*(xDim+1)+k*(xDim+1)*(yDim+1),
i+1+(j+1)*(xDim+1)+k*(xDim+1)*(yDim+1),
i+(j+1)*(xDim+1)+k*(xDim+1)*(yDim+1),
i+j*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
i+1+j*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
i+1+(j+1)*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
i+(j+1)*(xDim+1)+(k+1)*(xDim+1)*(yDim+1)};
output->InsertNextCell(VTK_HEXAHEDRON, 8, hexIds);
}
}
}
}
//----------------------------------------------------------------------------
void vtkCellTypeSource::GenerateWedges(
vtkUnstructuredGrid* output, int extent[6])
{
// cell dimensions
int xDim = extent[1]-extent[0];
int yDim = extent[3]-extent[2];
int zDim = extent[5]-extent[4];
output->Allocate(xDim*yDim*zDim*2);
for(int k=0;k<zDim;k++)
{
for(int j=0;j<yDim;j++)
{
for(int i=0;i<xDim;i++)
{
vtkIdType wedgeIds[6] = {
i+j*(xDim+1)+k*(xDim+1)*(yDim+1),
i+(j+1)*(xDim+1)+k*(xDim+1)*(yDim+1),
i+1+j*(xDim+1)+k*(xDim+1)*(yDim+1),
i+j*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
i+(j+1)*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
i+1+j*(xDim+1)+(k+1)*(xDim+1)*(yDim+1)};
output->InsertNextCell(VTK_WEDGE, 6, wedgeIds);
vtkIdType wedgeIds2[6] = {
i+1+j*(xDim+1)+k*(xDim+1)*(yDim+1),
i+(j+1)*(xDim+1)+k*(xDim+1)*(yDim+1),
i+1+(j+1)*(xDim+1)+k*(xDim+1)*(yDim+1),
i+1+j*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
i+(j+1)*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
i+1+(j+1)*(xDim+1)+(k+1)*(xDim+1)*(yDim+1)};
output->InsertNextCell(VTK_WEDGE, 6, wedgeIds2);
}
}
}
}
//----------------------------------------------------------------------------
void vtkCellTypeSource::GeneratePyramids(
vtkUnstructuredGrid* output, int extent[6])
{
// cell dimensions
int xDim = extent[1]-extent[0];
int yDim = extent[3]-extent[2];
int zDim = extent[5]-extent[4];
output->Allocate(xDim*yDim*zDim*6);
for(int k=0;k<zDim;k++)
{
for(int j=0;j<yDim;j++)
{
for(int i=0;i<xDim;i++)
{
vtkIdType hexIds[8] = {
i+j*(xDim+1)+k*(xDim+1)*(yDim+1),
i+1+j*(xDim+1)+k*(xDim+1)*(yDim+1),
i+1+(j+1)*(xDim+1)+k*(xDim+1)*(yDim+1),
i+(j+1)*(xDim+1)+k*(xDim+1)*(yDim+1),
i+j*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
i+1+j*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
i+1+(j+1)*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
i+(j+1)*(xDim+1)+(k+1)*(xDim+1)*(yDim+1)};
// add in center point
double point1[3], point2[3];
output->GetPoint(hexIds[0], point1);
output->GetPoint(hexIds[6], point2);
for(int l=0;l<3;l++)
{
point1[l] = .5*(point1[l]+point2[l]);
}
vtkIdType middlePoint =
output->GetPoints()->InsertNextPoint(point1);
vtkIdType pointIds1[5] = {hexIds[0], hexIds[1], hexIds[2],
hexIds[3], middlePoint};
output->InsertNextCell(VTK_PYRAMID, 5, pointIds1);
vtkIdType pointIds2[5] = {hexIds[6], hexIds[5], hexIds[4],
hexIds[7], middlePoint};
output->InsertNextCell(VTK_PYRAMID, 5, pointIds2);
vtkIdType pointIds3[5] = {hexIds[1], hexIds[5], hexIds[6],
hexIds[2], middlePoint};
output->InsertNextCell(VTK_PYRAMID, 5, pointIds3);
vtkIdType pointIds4[5] = {hexIds[0], hexIds[4], hexIds[5],
hexIds[1], middlePoint};
output->InsertNextCell(VTK_PYRAMID, 5, pointIds4);
vtkIdType pointIds5[5] = {hexIds[0], hexIds[3], hexIds[7],
hexIds[4], middlePoint};
output->InsertNextCell(VTK_PYRAMID, 5, pointIds5);
vtkIdType pointIds6[5] = {hexIds[6], hexIds[7], hexIds[3],
hexIds[2], middlePoint};
output->InsertNextCell(VTK_PYRAMID, 5, pointIds6);
}
}
}
}
//----------------------------------------------------------------------------
void vtkCellTypeSource::GenerateQuadraticTetras(
vtkUnstructuredGrid* output, int extent[6])
{
// cell dimensions
const int xDim = extent[1]-extent[0];
const int yDim = extent[3]-extent[2];
const int zDim = extent[5]-extent[4];
output->Allocate(xDim*yDim*zDim*5);
EdgeToPointMap edgeToPointId;
// pairs go from lower to higher point id
const vtkIdType edgePairs[12][6][2] = {
{{0, 1}, {1, 2}, {0, 2}, {0, 8}, {1, 8}, {2, 8}},
{{0, 2}, {3, 2}, {0, 3}, {0, 8}, {2, 8}, {3, 8}},
{{5, 6}, {4, 5}, {4, 6}, {6, 8}, {5, 8}, {4, 8}},
{{4, 6}, {4, 7}, {7, 6}, {6, 8}, {4, 8}, {7, 8}},
{{1, 5}, {5, 6}, {1, 6}, {1, 8}, {5, 8}, {6, 8}},
{{1, 6}, {2, 6}, {1, 2}, {1, 8}, {6, 8}, {2, 8}},
{{0, 4}, {4, 5}, {0, 5}, {0, 8}, {4, 8}, {5, 8}},
{{0, 5}, {1, 5}, {0, 1}, {0, 8}, {5, 8}, {1, 8}},
{{0, 3}, {3, 7}, {0, 7}, {0, 8}, {3, 8}, {7, 8}},
{{0, 7}, {4, 7}, {0, 4}, {0, 8}, {7, 8}, {4, 8}},
{{7, 6}, {3, 7}, {3, 6}, {6, 8}, {7, 8}, {3, 8}},
{{3, 6}, {3, 2}, {2, 6}, {6, 8}, {3, 8}, {2, 8}}
};
for(int k=0;k<zDim;k++)
{
for(int j=0;j<yDim;j++)
{
for(int i=0;i<xDim;i++)
{
vtkIdType hexIds[9] = {
i+j*(xDim+1)+k*(xDim+1)*(yDim+1),
i+1+j*(xDim+1)+k*(xDim+1)*(yDim+1),
i+1+(j+1)*(xDim+1)+k*(xDim+1)*(yDim+1),
i+(j+1)*(xDim+1)+k*(xDim+1)*(yDim+1),
i+j*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
i+1+j*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
i+1+(j+1)*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
i+(j+1)*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
-1};
// add in center point
double point1[3], point2[3];
output->GetPoint(hexIds[0], point1);
output->GetPoint(hexIds[6], point2);
for(int l=0;l<3;l++)
{
point1[l] = .5*(point1[l]+point2[l]);
}
hexIds[8] = output->GetPoints()->InsertNextPoint(point1);
vtkIdType tetraIds[12][10] = {
{hexIds[0], hexIds[1], hexIds[2], hexIds[8], -1, -1, -1, -1, -1, -1},
{hexIds[0], hexIds[2], hexIds[3], hexIds[8], -1, -1, -1, -1, -1, -1},
{hexIds[6], hexIds[5], hexIds[4], hexIds[8], -1, -1, -1, -1, -1, -1},
{hexIds[6], hexIds[4], hexIds[7], hexIds[8], -1, -1, -1, -1, -1, -1},
{hexIds[1], hexIds[5], hexIds[6], hexIds[8], -1, -1, -1, -1, -1, -1},
{hexIds[1], hexIds[6], hexIds[2], hexIds[8], -1, -1, -1, -1, -1, -1},
{hexIds[0], hexIds[4], hexIds[5], hexIds[8], -1, -1, -1, -1, -1, -1},
{hexIds[0], hexIds[5], hexIds[1], hexIds[8], -1, -1, -1, -1, -1, -1},
{hexIds[0], hexIds[3], hexIds[7], hexIds[8], -1, -1, -1, -1, -1, -1},
{hexIds[0], hexIds[7], hexIds[4], hexIds[8], -1, -1, -1, -1, -1, -1},
{hexIds[6], hexIds[7], hexIds[3], hexIds[8], -1, -1, -1, -1, -1, -1},
{hexIds[6], hexIds[3], hexIds[2], hexIds[8], -1, -1, -1, -1, -1, -1}};
for(int c=0;c<12;c++)
{
for(int e=0;e<6;e++)
{
std::pair<vtkIdType, vtkIdType> edge =
std::make_pair(hexIds[edgePairs[c][e][0]], hexIds[edgePairs[c][e][1]]);
EdgeToPointMap::iterator it=edgeToPointId.find(edge);
if(it==edgeToPointId.end())
{
output->GetPoint(edge.first, point1);
output->GetPoint(edge.second, point2);
for(int l=0;l<3;l++)
{
point1[l]=(point1[l]+point2[l])*.5;
}
vtkIdType mid=output->GetPoints()->InsertNextPoint(point1);
edgeToPointId[edge]=mid;
tetraIds[c][4+e] = mid;
}
else
{
tetraIds[c][4+e] = it->second;
}
}
output->InsertNextCell(VTK_QUADRATIC_TETRA, 10, tetraIds[c]);
}
}
}
}
}
//----------------------------------------------------------------------------
void vtkCellTypeSource::GenerateQuadraticHexahedron(
vtkUnstructuredGrid* output, int extent[6])
{
// cell dimensions
const int xDim = extent[1]-extent[0];
const int yDim = extent[3]-extent[2];
const int zDim = extent[5]-extent[4];
output->Allocate(xDim*yDim*zDim);
EdgeToPointMap edgeToPointId;
// pairs go from lower to higher point id
const vtkIdType edgePairs[12][2] = {
{0, 1}, {1, 2}, {3, 2}, {0, 3},
{4, 5}, {5, 6}, {7, 6}, {4, 7},
{0, 4}, {1, 5}, {2, 6}, {3, 7} };
for(int k=0;k<zDim;k++)
{
for(int j=0;j<yDim;j++)
{
for(int i=0;i<xDim;i++)
{
vtkIdType hexIds[20] = {
i+j*(xDim+1)+k*(xDim+1)*(yDim+1),
i+1+j*(xDim+1)+k*(xDim+1)*(yDim+1),
i+1+(j+1)*(xDim+1)+k*(xDim+1)*(yDim+1),
i+(j+1)*(xDim+1)+k*(xDim+1)*(yDim+1),
i+j*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
i+1+j*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
i+1+(j+1)*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
i+(j+1)*(xDim+1)+(k+1)*(xDim+1)*(yDim+1),
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1};
for(int e=0;e<12;e++)
{
std::pair<vtkIdType, vtkIdType> edge =
std::make_pair(hexIds[edgePairs[e][0]], hexIds[edgePairs[e][1]]);
EdgeToPointMap::iterator it=edgeToPointId.find(edge);
if(it==edgeToPointId.end())
{
double point1[3], point2[3];
output->GetPoint(edge.first, point1);
output->GetPoint(edge.second, point2);
for(int l=0;l<3;l++)
{
point1[l]=(point1[l]+point2[l])*.5;
}
vtkIdType mid=output->GetPoints()->InsertNextPoint(point1);
edgeToPointId[edge]=mid;
hexIds[8+e] = mid;
}