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/*=========================================================================
*
* Copyright NumFOCUS
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
/**
* This test verifies that a \ref itk::QuadEdgeMeshFrontIterator walkthrough on
* a Mesh correctly visits all the points. Therefore, we count the points
* and assert that the result is identical to the one obtained with
* \ref itk::QuadEdgeMeshComputeNumberOfPoints .
* This can only work when the instance of the Mesh we are considering has a
* single component (possibly multiply connected). In order to verify this
* assumption we use \ref itk::QuadEdgeMeshFrontDualIterator which is based on
* a \ref itk::QuadEdgeMeshFrontIterator . Hence we shall have tested both
* primal and dual version of the front iterator.
*/
#include "itkQuadEdgeMesh.h"
int
itkQuadEdgeMeshFrontIteratorTest(int, char *[])
{
using MeshType = itk::QuadEdgeMesh<double, 3>;
using MeshPointer = MeshType::Pointer;
using PointIdentifier = MeshType::PointIdentifier;
using PointIdSet = std::set<PointIdentifier>;
using CellType = MeshType::CellType;
using QEPolygonCellType = itk::QuadEdgeMeshPolygonCell<CellType>;
using FrontIterator = MeshType::FrontIterator;
using QEType = FrontIterator::QEType;
int expectedNumPts = 25;
int expectedNumCells = 32;
std::cout << "expectedNumPts= " << expectedNumPts << std::endl;
std::cout << "expectedNumCells= " << expectedNumCells << std::endl;
/////////////////////////////////////////////////////////////
int simpleSquareCells[96] = { 0, 1, 6, 0, 6, 5, 1, 2, 7, 1, 7, 6, 2, 3, 8, 2, 8, 7, 3, 4,
9, 3, 9, 8, 5, 6, 11, 5, 11, 10, 6, 7, 12, 6, 12, 11, 7, 8, 13, 7,
13, 12, 8, 9, 14, 8, 14, 13, 10, 11, 16, 10, 16, 15, 11, 12, 17, 11, 17, 16,
12, 13, 18, 12, 18, 17, 13, 14, 19, 13, 19, 18, 15, 16, 21, 15, 21, 20, 16, 17,
22, 16, 22, 21, 17, 18, 23, 17, 23, 22, 18, 19, 24, 18, 24, 23 };
// Configuration of simpleSquare mesh:
// #Vertices= 25 , #Edges= 56, #Faces= 32, #Boundary= 1, Chi= 1
//
// 20 --------- 21 --------- 22 --------- 23 --------- 24
// | __/ | __/ | __/ | __/ |
// | __/ | __/ | __/ | __/ |
// | __/ | __/ | __/ | __/ |
// | / | / | / | / |
// 15 --------- 16 --------- 17 --------- 18 --------- 19
// | __/ | __/ | __/ | __/ |
// | __/ | __/ | __/ | __/ |
// | __/ | __/ | __/ | __/ |
// | / | / | / | / |
// 10 --------- 11 --------- 12 --------- 13 --------- 14
// | __/ | __/ | __/ | __/ |
// | __/ | __/ | __/ | __/ |
// | __/ | __/ | __/ | __/ |
// | / | / | / | / |
// 5 ---------- 6 ---------- 7 ---------- 8 --------- 9
// | __/ | __/ | __/ | __/ |
// | __/ | __/ | __/ | __/ |
// | __/ | __/ | __/ | __/ |
// | / | / | / | / |
// 0 ---------- 1 ---------- 2 --------- 3 --------- 4
MeshPointer mesh = MeshType::New();
MeshType::PointType pts[25];
pts[0][0] = 0.0;
pts[0][1] = 0.0;
pts[0][2] = 0.0;
pts[1][0] = 1.0;
pts[1][1] = 0.0;
pts[1][2] = 0.0;
pts[2][0] = 2.0;
pts[2][1] = 0.0;
pts[2][2] = 0.0;
pts[3][0] = 3.0;
pts[3][1] = 0.0;
pts[3][2] = 0.0;
pts[4][0] = 4.0;
pts[4][1] = 0.0;
pts[4][2] = 0.0;
pts[5][0] = 0.0;
pts[5][1] = 1.0;
pts[5][2] = 0.0;
pts[6][0] = 1.0;
pts[6][1] = 1.0;
pts[6][2] = 0.0;
pts[7][0] = 2.0;
pts[7][1] = 1.0;
pts[7][2] = 0.0;
pts[8][0] = 3.0;
pts[8][1] = 1.0;
pts[8][2] = 0.0;
pts[9][0] = 4.0;
pts[9][1] = 1.0;
pts[9][2] = 0.0;
pts[10][0] = 0.0;
pts[10][1] = 2.0;
pts[10][2] = 0.0;
pts[11][0] = 1.0;
pts[11][1] = 2.0;
pts[11][2] = 0.0;
pts[12][0] = 2.0;
pts[12][1] = 2.0;
pts[12][2] = 0.0;
pts[13][0] = 3.0;
pts[13][1] = 2.0;
pts[13][2] = 0.0;
pts[14][0] = 4.0;
pts[14][1] = 2.0;
pts[14][2] = 0.0;
pts[15][0] = 0.0;
pts[15][1] = 3.0;
pts[15][2] = 0.0;
pts[16][0] = 1.0;
pts[16][1] = 3.0;
pts[16][2] = 0.0;
pts[17][0] = 2.0;
pts[17][1] = 3.0;
pts[17][2] = 0.0;
pts[18][0] = 3.0;
pts[18][1] = 3.0;
pts[18][2] = 0.0;
pts[19][0] = 4.0;
pts[19][1] = 3.0;
pts[19][2] = 0.0;
pts[20][0] = 0.0;
pts[20][1] = 4.0;
pts[20][2] = 0.0;
pts[21][0] = 1.0;
pts[21][1] = 4.0;
pts[21][2] = 0.0;
pts[22][0] = 2.0;
pts[22][1] = 4.0;
pts[22][2] = 0.0;
pts[23][0] = 3.0;
pts[23][1] = 4.0;
pts[23][2] = 0.0;
pts[24][0] = 4.0;
pts[24][1] = 4.0;
pts[24][2] = 0.0;
for (int i = 0; i < expectedNumPts; ++i)
{
mesh->SetPoint(i, pts[i]);
}
int numPts = mesh->GetNumberOfPoints();
std::cout << "numPts= " << numPts << std::endl;
CellType::CellAutoPointer cellpointer;
QEPolygonCellType * poly;
for (int i = 0; i < expectedNumCells; ++i)
{
poly = new QEPolygonCellType(3);
cellpointer.TakeOwnership(poly);
cellpointer->SetPointId(0, simpleSquareCells[3 * i]);
cellpointer->SetPointId(1, simpleSquareCells[3 * i + 1]);
cellpointer->SetPointId(2, simpleSquareCells[3 * i + 2]);
mesh->SetCell(i, cellpointer);
}
int numCells = mesh->GetNumberOfCells();
std::cout << "numCells= " << numCells << std::endl;
// Use a FrontIterator (Primal) to visit the points.
PointIdSet visitedSet;
for (FrontIterator it = mesh->BeginFront(); it != mesh->EndFront(); ++it)
{
QEType * edge = it.Value();
PointIdentifier origin = edge->GetOrigin();
PointIdentifier destination = edge->GetDestination();
if (!visitedSet.count(origin))
{
visitedSet.insert(origin);
}
if (!visitedSet.count(destination))
{
visitedSet.insert(destination);
}
}
// Compare with Mesh container iteration version
size_t numberOfPoints = visitedSet.size();
int computedNumberOfPoints = mesh->ComputeNumberOfPoints();
std::cout << "numberOfPoints " << numberOfPoints << std::endl;
std::cout << "computedNumberOfPoints= " << computedNumberOfPoints << std::endl;
if (computedNumberOfPoints == itk::Math::CastWithRangeCheck<int>(numberOfPoints))
{
std::cout << "Passed" << std::endl;
}
else
{
std::cout << "Failed" << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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