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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include <vtkActor.h>
#include <vtkJPEGReader.h>
#include <vtkMath.h>
#include <vtkNew.h>
#include <vtkOBJReader.h>
#include <vtkOBJWriter.h>
#include <vtkPNGReader.h>
#include <vtkPointData.h>
#include <vtkPolyData.h>
#include <vtkPolyDataMapper.h>
#include <vtkRegressionTestImage.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkTestUtilities.h>
#include <vtkTexture.h>
#include <vtkTexturedSphereSource.h>
#include <vtkNumberToString.h>
#include <string>
int TestOBJPolyDataWriter(int argc, char* argv[])
{
vtkNew<vtkTexturedSphereSource> sphereSource;
sphereSource->SetThetaResolution(16);
sphereSource->SetPhiResolution(16);
vtkNew<vtkJPEGReader> textReader;
char* fname = vtkTestUtilities::ExpandDataFileName(argc, argv, "Data/NE2_ps_bath_small.jpg");
textReader->SetFileName(fname);
delete[] fname;
char* tname =
vtkTestUtilities::GetArgOrEnvOrDefault("-T", argc, argv, "VTK_TEMP_DIR", "Testing/Temporary");
std::string tmpDir(tname);
delete[] tname;
std::string filename = tmpDir + "/TestOBJPolyDataWriter_write.obj";
vtkNew<vtkOBJWriter> writer;
writer->SetFileName(filename.c_str());
writer->SetInputConnection(0, sphereSource->GetOutputPort());
writer->SetInputConnection(1, textReader->GetOutputPort());
writer->Write();
vtkPolyData* polyInput = sphereSource->GetOutput();
// read this file and compare with input
vtkNew<vtkOBJReader> reader;
reader->SetFileName(filename.c_str());
reader->Update();
vtkPolyData* polyOutput = reader->GetOutput();
if (polyInput->GetNumberOfPoints() != polyOutput->GetNumberOfPoints())
{
cerr << "PolyData do not have the same number of points.\n";
return EXIT_FAILURE;
}
vtkDataArray* positionsInput = polyInput->GetPoints()->GetData();
vtkDataArray* positionsOutput = polyOutput->GetPoints()->GetData();
vtkDataArray* normalsInput = polyInput->GetPointData()->GetNormals();
vtkDataArray* normalsOutput = polyOutput->GetPointData()->GetNormals();
vtkDataArray* tcoordsInput = polyInput->GetPointData()->GetTCoords();
vtkDataArray* tcoordsOutput = polyOutput->GetPointData()->GetTCoords();
if (!positionsInput || !positionsOutput || !normalsInput || !normalsOutput || !tcoordsInput ||
!tcoordsOutput)
{
cerr << "One of the arrays is null.\n";
return EXIT_FAILURE;
}
// check values
int numberOfDifferentPoints = 0;
int numberOfDifferentNormals = 0;
int numberOfDifferentTCoords = 0;
vtkNumberToString converter;
for (vtkIdType i = 0; i < polyInput->GetNumberOfPoints(); i++)
{
double pi[3], po[3];
// check positions
positionsInput->GetTuple(i, pi);
positionsOutput->GetTuple(i, po);
if (vtkMath::Distance2BetweenPoints(pi, po) > 0.0)
{
cerr << "Point is different.\n";
cerr << " Input: " << converter.Convert(pi[0]) << " " << converter.Convert(pi[1]) << " "
<< converter.Convert(pi[2]) << "\n";
cerr << " Output: " << converter.Convert(po[0]) << " " << converter.Convert(po[1]) << " "
<< converter.Convert(po[2]) << "\n";
numberOfDifferentPoints++;
}
// check normals
normalsInput->GetTuple(i, pi);
normalsOutput->GetTuple(i, po);
if (vtkMath::AngleBetweenVectors(pi, po) > 0)
{
cerr << "Normal is different:\n";
cerr << " Input: " << converter.Convert(pi[0]) << " " << converter.Convert(pi[1]) << " "
<< converter.Convert(pi[2]) << "\n";
cerr << " Output: " << converter.Convert(po[0]) << " " << converter.Convert(po[1]) << " "
<< converter.Convert(po[2]) << "\n";
numberOfDifferentNormals++;
}
// check texture coords
tcoordsInput->GetTuple(i, pi);
tcoordsOutput->GetTuple(i, po);
pi[2] = po[2] = 0.0;
if (vtkMath::Distance2BetweenPoints(pi, po) > 0.0)
{
cerr << "Texture coord is different:\n";
cerr << "Input: " << converter.Convert(pi[0]) << " " << converter.Convert(pi[1]) << "\n";
cerr << "Output: " << converter.Convert(po[0]) << " " << converter.Convert(po[1]) << "\n";
numberOfDifferentTCoords++;
}
}
if (numberOfDifferentPoints != 0 || numberOfDifferentNormals != 0 ||
numberOfDifferentTCoords != 0)
{
return EXIT_FAILURE;
}
vtkNew<vtkPolyDataMapper> mapper;
mapper->SetInputConnection(reader->GetOutputPort());
// read png file and set up texture
vtkNew<vtkPNGReader> pngReader;
std::string pngFile = filename.replace(filename.length() - 3, 3, "png");
pngReader->SetFileName(pngFile.c_str());
vtkNew<vtkTexture> texture;
texture->SetInputConnection(pngReader->GetOutputPort());
// add mapper and texture in an actor
vtkNew<vtkActor> actor;
actor->SetMapper(mapper);
actor->SetTexture(texture);
// Standard rendering classes
vtkNew<vtkRenderer> renderer;
vtkNew<vtkRenderWindow> renWin;
renWin->AddRenderer(renderer);
vtkNew<vtkRenderWindowInteractor> iren;
iren->SetRenderWindow(renWin);
// set up the view
renderer->SetBackground(0.5, 0.5, 0.5);
renWin->SetSize(300, 300);
renderer->AddActor(actor);
renderer->ResetCamera();
renWin->Render();
int retVal = vtkRegressionTestImage(renWin);
if (retVal == vtkRegressionTester::DO_INTERACTOR)
{
iren->Start();
}
return !retVal;
}
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