ReadOBJ
VTKExamples/Cxx/IO/ReadOBJ
Description¶
This example demonstrates how to read a [.obj file|Wavefront OBJ]]([wikipedia:Wavefront) file. The result is displayed.
Code¶
ReadOBJ.cxx
#include <vtkOBJReader.h> #include <vtkPolyDataMapper.h> #include <vtkActor.h> #include <vtkRenderer.h> #include <vtkRenderWindow.h> #include <vtkRenderWindowInteractor.h> #include <vtkSmartPointer.h> #include <string> int main(int argc, char* argv[]) { // Parse command line arguments if(argc != 2) { std::cout << "Usage: " << argv[0] << " Filename(.obj)" << std::endl; return EXIT_FAILURE; } std::string filename = argv[1]; vtkSmartPointer<vtkOBJReader> reader = vtkSmartPointer<vtkOBJReader>::New(); reader->SetFileName(filename.c_str()); reader->Update(); // Visualize vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New(); mapper->SetInputConnection(reader->GetOutputPort()); vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New(); actor->SetMapper(mapper); vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); renderer->AddActor(actor); renderer->SetBackground(.3, .6, .3); // Background color green vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->AddRenderer(renderer); vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); renderWindowInteractor->SetRenderWindow(renderWindow); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(ReadOBJ) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(ReadOBJ MACOSX_BUNDLE ReadOBJ.cxx) target_link_libraries(ReadOBJ ${VTK_LIBRARIES})
Download and Build ReadOBJ¶
Danger
The generation of tar files has not been ported to the new VTKExamples. Some tarballs may be missing or out-of-date.
Click here to download ReadOBJ and its CMakeLists.txt file. Once the tarball ReadOBJ.tar has been downloaded and extracted,
cd ReadOBJ/build
If VTK is installed:
cmake ..
If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..
Build the project:
make
and run it:
./ReadOBJ
WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.