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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#define VTK_EPSILON 1e-10
// Subclass of vtkCell
#include "vtkEmptyCell.h"
#include "vtkGenericCell.h"
#include "vtkLine.h"
#include "vtkPixel.h"
#include "vtkPolyLine.h"
#include "vtkPolyVertex.h"
#include "vtkPolygon.h"
#include "vtkQuad.h"
#include "vtkTriangle.h"
#include "vtkTriangleStrip.h"
#include "vtkVertex.h"
// Subclass of vtkCell3D
#include "vtkConvexPointSet.h"
#include "vtkHexagonalPrism.h"
#include "vtkHexahedron.h"
#include "vtkPentagonalPrism.h"
#include "vtkPyramid.h"
#include "vtkTetra.h"
#include "vtkVoxel.h"
#include "vtkWedge.h"
// Subclass of vtkNonLinearCell
#include "vtkQuadraticEdge.h"
#include "vtkQuadraticHexahedron.h"
#include "vtkQuadraticPyramid.h"
#include "vtkQuadraticQuad.h"
#include "vtkQuadraticTetra.h"
#include "vtkQuadraticTriangle.h"
#include "vtkQuadraticWedge.h"
// Bi/Tri linear quadratic cells
#include "vtkBiQuadraticQuad.h"
#include "vtkBiQuadraticQuadraticHexahedron.h"
#include "vtkBiQuadraticQuadraticWedge.h"
#include "vtkBiQuadraticTriangle.h"
#include "vtkCubicLine.h"
#include "vtkQuadraticLinearQuad.h"
#include "vtkQuadraticLinearWedge.h"
#include "vtkTriQuadraticHexahedron.h"
#include "vtkTriQuadraticPyramid.h"
#include <vector>
template <class TCell>
int TestOneInterpolationFunction(double eps = VTK_EPSILON)
{
auto cell = vtkSmartPointer<TCell>::New();
int numPts = cell->GetNumberOfPoints();
std::vector<double> sf(numPts);
double* coords = cell->GetParametricCoords();
int r = 0;
for (int i = 0; i < numPts; ++i)
{
double* point = coords + 3 * i;
double sum = 0.;
cell->InterpolateFunctions(point, sf.data()); // virtual function
for (int j = 0; j < numPts; j++)
{
sum += sf[j];
if (j == i)
{
if (fabs(sf[j] - 1) > eps)
{
std::cout << "fabs(sf[" << j << "] - 1): " << fabs(sf[j] - 1) << std::endl;
++r;
}
}
else
{
if (fabs(sf[j] - 0) > eps)
{
std::cout << "fabs(sf[" << j << "] - 0): " << fabs(sf[j] - 0) << std::endl;
++r;
}
}
}
if (fabs(sum - 1) > eps)
{
++r;
}
}
// Let's test unity condition on the center point:
double center[3];
cell->GetParametricCenter(center);
cell->InterpolateFunctions(center, sf.data()); // virtual function
double sum = 0.;
for (int j = 0; j < numPts; j++)
{
sum += sf[j];
}
if (fabs(sum - 1) > eps)
{
++r;
}
return r;
}
int TestInterpolationFunctions(int, char*[])
{
int r = 0;
// Subclasses of vtkCell3D
// r += TestOneInterpolationFunction<vtkEmptyCell>(); // not implemented
// r += TestOneInterpolationFunction<vtkGenericCell>(); // not implemented
r += TestOneInterpolationFunction<vtkLine>();
r += TestOneInterpolationFunction<vtkPixel>();
// r += TestOneInterpolationFunction<vtkPolygon>();
// r += TestOneInterpolationFunction<vtkPolyLine>(); // not implemented
// r += TestOneInterpolationFunction<vtkPolyVertex>(); // not implemented
r += TestOneInterpolationFunction<vtkQuad>();
r += TestOneInterpolationFunction<vtkTriangle>();
// r += TestOneInterpolationFunction<vtkTriangleStrip>(); // not implemented
r += TestOneInterpolationFunction<vtkVertex>();
// Subclasses of vtkCell3D
// r += TestOneInterpolationFunction<vtkConvexPointSet>(); // not implemented
r += TestOneInterpolationFunction<vtkHexagonalPrism>();
r += TestOneInterpolationFunction<vtkHexahedron>();
r += TestOneInterpolationFunction<vtkPentagonalPrism>(1.e-5);
r += TestOneInterpolationFunction<vtkPyramid>();
r += TestOneInterpolationFunction<vtkTetra>();
r += TestOneInterpolationFunction<vtkVoxel>();
r += TestOneInterpolationFunction<vtkWedge>();
// Subclasses of vtkNonLinearCell
r += TestOneInterpolationFunction<vtkQuadraticEdge>();
r += TestOneInterpolationFunction<vtkQuadraticHexahedron>();
r += TestOneInterpolationFunction<vtkQuadraticPyramid>();
r += TestOneInterpolationFunction<vtkQuadraticQuad>();
r += TestOneInterpolationFunction<vtkQuadraticTetra>();
r += TestOneInterpolationFunction<vtkQuadraticTriangle>();
r += TestOneInterpolationFunction<vtkQuadraticWedge>();
// Bi/Tri linear quadratic cells
r += TestOneInterpolationFunction<vtkBiQuadraticQuad>();
r += TestOneInterpolationFunction<vtkBiQuadraticQuadraticHexahedron>();
r += TestOneInterpolationFunction<vtkBiQuadraticQuadraticWedge>();
r += TestOneInterpolationFunction<vtkBiQuadraticTriangle>();
r += TestOneInterpolationFunction<vtkCubicLine>();
r += TestOneInterpolationFunction<vtkQuadraticLinearQuad>();
r += TestOneInterpolationFunction<vtkQuadraticLinearWedge>();
r += TestOneInterpolationFunction<vtkTriQuadraticHexahedron>();
r += TestOneInterpolationFunction<vtkTriQuadraticPyramid>();
return r;
}
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