PerlinNoise
VTKExamples/Cxx/Filtering/PerlinNoise
Question
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Code¶
PerlinNoise.cxx
#include <vtkSmartPointer.h> #include <vtkPolyDataMapper.h> #include <vtkActor.h> #include <vtkRenderWindow.h> #include <vtkRenderer.h> #include <vtkRenderWindowInteractor.h> #include <vtkSampleFunction.h> #include <vtkContourFilter.h> #include <vtkProperty.h> #include <vtkCamera.h> #include <vtkPerlinNoise.h> int main(int, char *[]) { vtkSmartPointer<vtkPerlinNoise> perlinNoise = vtkSmartPointer<vtkPerlinNoise>::New(); perlinNoise->SetFrequency(2, 1.25, 1.5); perlinNoise->SetPhase(0, 0, 0); vtkSmartPointer<vtkSampleFunction> sample = vtkSmartPointer<vtkSampleFunction>::New(); sample->SetImplicitFunction(perlinNoise); sample->SetSampleDimensions(65, 65, 20); sample->ComputeNormalsOff(); vtkSmartPointer<vtkContourFilter> surface = vtkSmartPointer<vtkContourFilter>::New(); surface->SetInputConnection(sample->GetOutputPort()); surface->SetValue(0, 0.0); vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New(); mapper->SetInputConnection(surface->GetOutputPort()); mapper->ScalarVisibilityOff(); vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New(); actor->SetMapper(mapper); actor->GetProperty()->SetColor(0.2, 0.4, 0.6); vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->AddRenderer(renderer); vtkSmartPointer<vtkRenderWindowInteractor> interactor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); interactor->SetRenderWindow(renderWindow); // Add the actors to the renderer, set the background and size renderer->AddActor(actor); renderer->SetBackground(1, 1, 1); renderWindow->SetSize(300, 300); renderer->ResetCamera(); renderWindow->Render(); interactor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.3 FATAL_ERROR) project(PerlinNoise) find_package(VTK COMPONENTS vtkCommonCore vtkCommonDataModel vtkFiltersCore vtkImagingHybrid vtkInteractionStyle vtkRenderingCore vtkRenderingFreeType vtkRenderingOpenGL2 QUIET) if (NOT VTK_FOUND) message("Skipping PerlinNoise: ${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(PerlinNoise MACOSX_BUNDLE PerlinNoise.cxx ) target_link_libraries(PerlinNoise PRIVATE ${VTK_LIBRARIES}) else () # include all components add_executable(PerlinNoise MACOSX_BUNDLE PerlinNoise.cxx ) target_link_libraries(PerlinNoise PRIVATE ${VTK_LIBRARIES}) # vtk_module_autoinit is needed vtk_module_autoinit( TARGETS PerlinNoise MODULES ${VTK_LIBRARIES} ) endif ()
Download and Build PerlinNoise¶
Click here to download PerlinNoise and its CMakeLists.txt file. Once the tarball PerlinNoise.tar has been downloaded and extracted,
cd PerlinNoise/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:
./PerlinNoise
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.