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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkCellData.h"
#include "vtkDebugLeaks.h"
#include "vtkNew.h"
#include "vtkOBJReader.h"
#include "vtkOBJWriter.h"
#include "vtkPointData.h"
#include "vtkPolyData.h"
#include "vtkTestUtilities.h"
int CheckData(vtkPolyData* data)
{
if (!data)
{
std::cerr << "Could not read data" << std::endl;
return EXIT_FAILURE;
}
// The OBJ file has 3 cells and 8 points.
// 4 of those points have 2 textures associated, thus the reader output
// must have 12 points.
if (data->GetNumberOfPoints() != 12 && data->GetNumberOfCells() == 3)
{
std::cerr << "Invalid number of points or cells" << std::endl;
return EXIT_FAILURE;
}
// The output must have 2 arrays, texture_0 & texture_1. texture_0 has
// (-1, -1) for indices 4 to 7. texture_1 has (-1, -1) for every indices but
// those between 4 and 7
// Check the number of arrays
if (data->GetPointData()->GetNumberOfArrays() != 2)
{
std::cerr << "Invalid number of arrays" << std::endl;
return EXIT_FAILURE;
}
vtkDataArray* texture0 = data->GetPointData()->GetArray("texture_0");
vtkDataArray* texture1 = data->GetPointData()->GetArray("texture_1");
// Check if the arrays are named correctly
if (!texture0)
{
std::cerr << "Could not find texture_0 array" << std::endl;
return EXIT_FAILURE;
}
if (!texture1)
{
std::cerr << "Could not find texture_1 array" << std::endl;
return EXIT_FAILURE;
}
// Check the texture values
for (int i = 0; i < 12; ++i)
{
double* currentTCoord0 = texture0->GetTuple2(i);
double* currentTCoord1 = texture1->GetTuple2(i);
// Testing values < 4
if (i < 4)
{
if (!(currentTCoord0[0] == -1 && currentTCoord0[1] == -1) ||
!(currentTCoord1[0] == -1 && currentTCoord1[1] == -1))
{
std::cerr << "Unexpected texture values" << std::endl;
return EXIT_FAILURE;
}
}
// Testing values inside [4, 7]
else if (i >= 4 && i <= 7)
{
if (!(currentTCoord0[0] == -1 && currentTCoord0[1] == -1) ||
(currentTCoord1[0] == -1 && currentTCoord1[1] == -1))
{
std::cerr << "Unexpected texture values" << std::endl;
return EXIT_FAILURE;
}
}
// Testing values > 7
else if (i > 7)
{
if ((currentTCoord0[0] == -1 && currentTCoord0[1] == -1) ||
!(currentTCoord1[0] == -1 && currentTCoord1[1] == -1))
{
std::cerr << "Unexpected texture values" << std::endl;
return EXIT_FAILURE;
}
}
}
vtkIntArray* materialIds =
vtkIntArray::SafeDownCast(data->GetCellData()->GetArray("MaterialIds"));
if (!(materialIds && materialIds->GetNumberOfTuples() == 3 && materialIds->GetValue(0) == 0 &&
materialIds->GetValue(1) && materialIds->GetValue(2) == 2))
{
std::cerr << "Invalid MaterialIds cell array" << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
//------------------------------------------------------------------------------
int TestOBJWriterMultiTexture(int argc, char* argv[])
{
// Create the reader.
char* fname =
vtkTestUtilities::ExpandDataFileName(argc, argv, "Data/obj_multitexture_notexture.obj");
vtkNew<vtkOBJReader> reader;
reader->SetFileName(fname);
reader->Update();
vtkPolyData* data = reader->GetOutput();
delete[] fname;
if (CheckData(data) == EXIT_FAILURE)
{
return EXIT_FAILURE;
}
char* tname =
vtkTestUtilities::GetArgOrEnvOrDefault("-T", argc, argv, "VTK_TEMP_DIR", "Testing/Temporary");
std::string tmpDir(tname);
delete[] tname;
std::string filename = tmpDir + "/TestOBJWriterMultiTexture_write.obj";
vtkNew<vtkOBJWriter> writer;
writer->SetFileName(filename.c_str());
writer->SetInputConnection(0, reader->GetOutputPort());
writer->Write();
// read this file and compare with input
vtkNew<vtkOBJReader> reader2;
reader2->SetFileName(filename.c_str());
reader2->Update();
data = reader2->GetOutput();
if (CheckData(data) == EXIT_FAILURE)
{
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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