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/*=========================================================================
Program: Visualization Toolkit
Module: vtkLagrangeQuadrilateral.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 "vtkLagrangeQuadrilateral.h"
#include "vtkCellData.h"
#include "vtkDoubleArray.h"
#include "vtkIdList.h"
#include "vtkLagrangeCurve.h"
#include "vtkLagrangeInterpolation.h"
#include "vtkMath.h"
#include "vtkObjectFactory.h"
#include "vtkPointData.h"
#include "vtkPoints.h"
#include "vtkQuad.h"
#include "vtkTriangle.h"
#include "vtkVector.h"
#include "vtkVectorOperators.h"
VTK_ABI_NAMESPACE_BEGIN
vtkStandardNewMacro(vtkLagrangeQuadrilateral);
vtkLagrangeQuadrilateral::vtkLagrangeQuadrilateral() = default;
vtkLagrangeQuadrilateral::~vtkLagrangeQuadrilateral() = default;
void vtkLagrangeQuadrilateral::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
vtkCell* vtkLagrangeQuadrilateral::GetEdge(int edgeId)
{
vtkLagrangeCurve* result = EdgeCell;
const auto set_number_of_ids_and_points = [&](const vtkIdType& npts) -> void {
result->Points->SetNumberOfPoints(npts);
result->PointIds->SetNumberOfIds(npts);
};
const auto set_ids_and_points = [&](const vtkIdType& edge_id, const vtkIdType& face_id) -> void {
result->Points->SetPoint(edge_id, this->Points->GetPoint(face_id));
result->PointIds->SetId(edge_id, this->PointIds->GetId(face_id));
};
this->SetEdgeIdsAndPoints(edgeId, set_number_of_ids_and_points, set_ids_and_points);
return result;
}
/**\brief Populate the linear quadrilateral returned by GetApprox() with point-data from one
* voxel-like interval of this cell.
*
* Ensure that you have called GetOrder() before calling this method
* so that this->Order is up to date. This method does no checking
* before using it to map connectivity-array offsets.
*/
vtkQuad* vtkLagrangeQuadrilateral::GetApproximateQuad(
int subId, vtkDataArray* scalarsIn, vtkDataArray* scalarsOut)
{
vtkQuad* approx = this->GetApprox();
bool doScalars = (scalarsIn && scalarsOut);
if (doScalars)
{
scalarsOut->SetNumberOfTuples(4);
}
int i, j, k;
if (!this->SubCellCoordinatesFromId(i, j, k, subId))
{
vtkErrorMacro("Invalid subId " << subId);
return nullptr;
}
// Get the point ids (and optionally scalars) for each of the 4 corners
// in the approximating quadrilateral spanned by (i, i+1) x (j, j+1):
for (vtkIdType ic = 0; ic < 4; ++ic)
{
const vtkIdType corner =
this->PointIndexFromIJK(i + ((((ic + 1) / 2) % 2) ? 1 : 0), j + (((ic / 2) % 2) ? 1 : 0), 0);
vtkVector3d cp;
this->Points->GetPoint(corner, cp.GetData());
approx->Points->SetPoint(ic, cp.GetData());
approx->PointIds->SetId(ic, doScalars ? corner : this->PointIds->GetId(corner));
if (doScalars)
{
scalarsOut->SetTuple(ic, scalarsIn->GetTuple(corner));
}
}
return approx;
}
void vtkLagrangeQuadrilateral::InterpolateFunctions(const double pcoords[3], double* weights)
{
vtkLagrangeInterpolation::Tensor2ShapeFunctions(this->GetOrder(), pcoords, weights);
}
void vtkLagrangeQuadrilateral::InterpolateDerivs(const double pcoords[3], double* derivs)
{
vtkLagrangeInterpolation::Tensor2ShapeDerivatives(this->GetOrder(), pcoords, derivs);
}
vtkHigherOrderCurve* vtkLagrangeQuadrilateral::GetEdgeCell()
{
return EdgeCell;
}
VTK_ABI_NAMESPACE_END
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