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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
// .NAME Test of an RGBA texture on a vtkActor.
// .SECTION Description
// this program tests the CityGML Reader and setting of textures to
// individual datasets of the multiblock tree.
#include "vtkActor.h"
#include "vtkCamera.h"
#include "vtkCityGMLReader.h"
#include "vtkGLTFImporter.h"
#include "vtkGLTFWriter.h"
#include "vtkCompositeDataIterator.h"
#include "vtkFieldData.h"
#include "vtkJPEGReader.h"
#include "vtkLogger.h"
#include "vtkMultiBlockDataSet.h"
#include "vtkOBJReader.h"
#include "vtkPolyData.h"
#include "vtkPolyDataMapper.h"
#include "vtkRegressionTestImage.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderer.h"
#include "vtkStringArray.h"
#include "vtkTestUtilities.h"
#include "vtkTexture.h"
#include "vtksys/SystemTools.hxx"
#include <sstream>
//------------------------------------------------------------------------------
void SetField(vtkDataObject* obj, const char* name, const char* value)
{
vtkFieldData* fd = obj->GetFieldData();
if (!fd)
{
vtkNew<vtkFieldData> newfd;
obj->SetFieldData(newfd);
fd = newfd;
}
vtkNew<vtkStringArray> sa;
sa->SetNumberOfTuples(1);
sa->SetValue(0, value);
sa->SetName(name);
fd->AddArray(sa);
}
//------------------------------------------------------------------------------
std::array<double, 3> ReadOBJOffset(const char* comment)
{
std::array<double, 3> translation = { 0, 0, 0 };
if (comment)
{
std::istringstream istr(comment);
std::array<std::string, 3> axesNames = { "x", "y", "z" };
for (int i = 0; i < 3; ++i)
{
std::string axis;
std::string s;
istr >> axis >> s >> translation[i];
if (istr.fail())
{
vtkLog(WARNING, "Cannot read axis " << axesNames[i] << " from comment.");
}
if (axis != axesNames[i])
{
vtkLog(WARNING, "Invalid axis " << axesNames[i] << ": " << axis);
}
}
}
else
{
vtkLog(WARNING, "nullptr comment.");
}
return translation;
}
//------------------------------------------------------------------------------
std::string GetOBJTextureFileName(const std::string& file)
{
std::string fileNoExt = vtksys::SystemTools::GetFilenameWithoutExtension(file);
return fileNoExt + ".png";
}
vtkSmartPointer<vtkMultiBlockDataSet> ReadOBJFiles(int numberOfBuildings, int vtkNotUsed(lod),
const std::vector<std::string>& files, std::array<double, 3>& fileOffset)
{
auto root = vtkSmartPointer<vtkMultiBlockDataSet>::New();
for (size_t i = 0; i < files.size() && i < static_cast<size_t>(numberOfBuildings); ++i)
{
vtkNew<vtkOBJReader> reader;
reader->SetFileName(files[i].c_str());
reader->Update();
if (i == 0)
{
fileOffset = ReadOBJOffset(reader->GetComment());
}
auto polyData = reader->GetOutput();
std::string textureFileName = GetOBJTextureFileName(files[i]);
SetField(polyData, "texture_uri", textureFileName.c_str());
auto building = vtkSmartPointer<vtkMultiBlockDataSet>::New();
building->SetBlock(0, polyData);
root->SetBlock(root->GetNumberOfBlocks(), building);
}
return root;
}
int TestGLTFWriter(int argc, char* argv[])
{
std::string fileName = argv[1];
bool binary = false;
if (argc > 2 && std::string(argv[2]) == "binary")
{
binary = true;
}
int lod = 3;
if (argc > 3)
{
try
{
lod = std::stoi(argv[3]);
}
catch (std::exception&)
{
lod = 3;
}
}
std::string filePath = vtksys::SystemTools::GetFilenamePath(fileName);
std::string fileExt = vtksys::SystemTools::GetFilenameExtension(fileName);
std::array<double, 3> fileOffset;
std::cout << fileName << std::endl;
std::cout << filePath << std::endl;
bool cityGML = false;
if (fileExt == ".gml")
{
cityGML = true;
}
else if (fileExt == ".obj")
{
cityGML = false;
}
else
{
vtkLog(ERROR, "Invalid file type: " << fileName);
return 0;
}
vtkSmartPointer<vtkMultiBlockDataSet> data;
if (cityGML)
{
vtkNew<vtkCityGMLReader> reader;
reader->SetFileName(fileName.c_str());
reader->SetLOD(lod);
reader->Update();
data = vtkMultiBlockDataSet::SafeDownCast(reader->GetOutputDataObject(0));
}
else
{
data = ReadOBJFiles(1, 0 /*lod - not used*/, { fileName }, fileOffset);
}
vtkNew<vtkRenderer> renderer;
renderer->SetBackground(0.5, 0.7, 0.7);
vtkNew<vtkRenderWindow> renWin;
renWin->AddRenderer(renderer);
vtkNew<vtkRenderWindowInteractor> interactor;
interactor->SetRenderWindow(renWin);
char* tname =
vtkTestUtilities::GetArgOrEnvOrDefault("-T", argc, argv, "VTK_TEMP_DIR", "Testing/Temporary");
std::string tmpDir(tname);
delete[] tname;
std::string outputName =
tmpDir + "/TestGLTFWriter" + (cityGML ? "CityGML" : "Obj") + (binary ? "Binary.glb" : ".gltf");
vtkNew<vtkGLTFWriter> writer;
writer->SetFileName(outputName.c_str());
writer->SetTextureBaseDirectory((filePath).c_str());
writer->SetInputDataObject(data);
writer->Write();
vtkNew<vtkGLTFImporter> importer;
importer->SetFileName(outputName.c_str());
importer->SetCamera(-1);
importer->SetRenderWindow(renWin);
importer->Update();
renderer->ResetCamera();
if (cityGML)
{
renderer->GetActiveCamera()->Azimuth(90);
renderer->GetActiveCamera()->Roll(-90);
renderer->GetActiveCamera()->Zoom(1.5);
}
renWin->SetSize(400, 400);
renWin->Render();
interactor->Initialize();
renWin->Render();
int retVal = vtkRegressionTestImage(renWin);
if (retVal == vtkRegressionTester::DO_INTERACTOR)
{
interactor->Start();
}
return !retVal;
}
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