HiddenLineRemoval
VTKExamples/Cxx/Rendering/HiddenLineRemoval
Question
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Code¶
HiddenLineRemoval.cxx
#include <vtkSmartPointer.h> #include <vtkBYUReader.h> #include <vtkOBJReader.h> #include <vtkPLYReader.h> #include <vtkPolyDataReader.h> #include <vtkSTLReader.h> #include <vtkXMLPolyDataReader.h> #include <vtkSphereSource.h> #include <vtkActor.h> #include <vtkPolyDataMapper.h> #include <vtkProperty.h> #include <vtkRenderWindow.h> #include <vtkRenderWindowInteractor.h> #include <vtkRenderer.h> #include <vtkCamera.h> #include <vtkNamedColors.h> #include <vtkTimerLog.h> #include <vtksys/SystemTools.hxx> namespace { vtkSmartPointer<vtkPolyData> ReadPolyData(const char *fileName); } int main (int argc, char *argv[]) { vtkSmartPointer<vtkPolyData> polyData = ReadPolyData(argc > 1 ? argv[1] : "");; // Visualize vtkSmartPointer<vtkNamedColors> colors = vtkSmartPointer<vtkNamedColors>::New(); vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New(); mapper->SetInputData(polyData); vtkSmartPointer<vtkProperty> backProp = vtkSmartPointer<vtkProperty>::New(); backProp->SetDiffuseColor(colors->GetColor3d("Banana").GetData()); backProp->SetSpecular(.6); backProp->SetSpecularPower(30); vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New(); actor->SetMapper(mapper); actor->SetBackfaceProperty(backProp); actor->GetProperty()->SetDiffuseColor(colors->GetColor3d("Crimson").GetData()); actor->GetProperty()->SetSpecular(.6); actor->GetProperty()->SetSpecularPower(30); actor->GetProperty()->SetRepresentationToWireframe(); vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->AddRenderer(renderer); vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); renderWindowInteractor->SetRenderWindow(renderWindow); renderer->AddActor(actor); renderer->SetBackground(colors->GetColor3d("SlateGray").GetData()); renderer->UseHiddenLineRemovalOn(); renderWindow->SetSize(640, 480); renderWindow->Render(); renderWindowInteractor->Start(); return EXIT_SUCCESS; } namespace { vtkSmartPointer<vtkPolyData> ReadPolyData(const char *fileName) { vtkSmartPointer<vtkPolyData> polyData; std::string extension = vtksys::SystemTools::GetFilenameLastExtension(std::string(fileName)); if (extension == ".ply") { vtkSmartPointer<vtkPLYReader> reader = vtkSmartPointer<vtkPLYReader>::New(); reader->SetFileName (fileName); reader->Update(); polyData = reader->GetOutput(); } else if (extension == ".vtp") { vtkSmartPointer<vtkXMLPolyDataReader> reader = vtkSmartPointer<vtkXMLPolyDataReader>::New(); reader->SetFileName (fileName); reader->Update(); polyData = reader->GetOutput(); } else if (extension == ".obj") { vtkSmartPointer<vtkOBJReader> reader = vtkSmartPointer<vtkOBJReader>::New(); reader->SetFileName (fileName); reader->Update(); polyData = reader->GetOutput(); } else if (extension == ".stl") { vtkSmartPointer<vtkSTLReader> reader = vtkSmartPointer<vtkSTLReader>::New(); reader->SetFileName (fileName); reader->Update(); polyData = reader->GetOutput(); } else if (extension == ".vtk") { vtkSmartPointer<vtkPolyDataReader> reader = vtkSmartPointer<vtkPolyDataReader>::New(); reader->SetFileName (fileName); reader->Update(); polyData = reader->GetOutput(); } else if (extension == ".g") { vtkSmartPointer<vtkBYUReader> reader = vtkSmartPointer<vtkBYUReader>::New(); reader->SetGeometryFileName (fileName); reader->Update(); polyData = reader->GetOutput(); } else { vtkSmartPointer<vtkSphereSource> source = vtkSmartPointer<vtkSphereSource>::New(); source->Update(); polyData = source->GetOutput(); } return polyData; } }
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.3 FATAL_ERROR) project(HiddenLineRemoval) find_package(VTK COMPONENTS vtkCommonColor vtkCommonCore vtkCommonSystem vtkFiltersSources vtkIOGeometry vtkIOLegacy vtkIOPLY vtkIOXML vtkInteractionStyle vtkRenderingContextOpenGL2 vtkRenderingCore vtkRenderingFreeType vtkRenderingGL2PSOpenGL2 vtkRenderingOpenGL2 QUIET) if (NOT VTK_FOUND) message("Skipping HiddenLineRemoval: ${VTK_NOT_FOUND_MESSAGE}") return () endif() message (STATUS "VTK_VERSION: ${VTK_VERSION}") if (VTK_VERSION VERSION_LESS "8.90.0") # old system include(${VTK_USE_FILE}) add_executable(HiddenLineRemoval MACOSX_BUNDLE HiddenLineRemoval.cxx ) target_link_libraries(HiddenLineRemoval PRIVATE ${VTK_LIBRARIES}) else () # include all components add_executable(HiddenLineRemoval MACOSX_BUNDLE HiddenLineRemoval.cxx ) target_link_libraries(HiddenLineRemoval PRIVATE ${VTK_LIBRARIES}) # vtk_module_autoinit is needed vtk_module_autoinit( TARGETS HiddenLineRemoval MODULES ${VTK_LIBRARIES} ) endif ()
Download and Build HiddenLineRemoval¶
Click here to download HiddenLineRemoval and its CMakeLists.txt file. Once the tarball HiddenLineRemoval.tar has been downloaded and extracted,
cd HiddenLineRemoval/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:
./HiddenLineRemoval
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.