VTK/Examples/Cxx/GeometricObjects/Frustum
From KitwarePublic
Jump to navigationJump to searchThis example gets the frustum from a camera and displays it on the screen.
Contents
Frustum.cxx
#include <vtkVersion.h>
#include <vtkFrustumSource.h>
#include <vtkPolyData.h>
#include <vtkSmartPointer.h>
#include <vtkCamera.h>
#include <vtkPlanes.h>
#include <vtkMapper.h>
#include <vtkActor.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkPolyDataMapper.h>
int main(int, char *[])
{
vtkSmartPointer<vtkCamera> camera =
vtkSmartPointer<vtkCamera>::New();
double planesArray[24];
camera->GetFrustumPlanes(1, planesArray);
vtkSmartPointer<vtkPlanes> planes =
vtkSmartPointer<vtkPlanes>::New();
planes->SetFrustumPlanes(planesArray);
vtkSmartPointer<vtkFrustumSource> frustumSource =
vtkSmartPointer<vtkFrustumSource>::New();
frustumSource->ShowLinesOff();
frustumSource->SetPlanes(planes);
frustumSource->Update();
vtkPolyData* frustum = frustumSource->GetOutput();
vtkSmartPointer<vtkPolyDataMapper> mapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
#if VTK_MAJOR_VERSION <= 5
mapper->SetInput(frustum);
#else
mapper->SetInputData(frustum);
#endif
vtkSmartPointer<vtkActor> actor =
vtkSmartPointer<vtkActor>::New();
actor->SetMapper(mapper);
// a renderer and render window
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);
// an interactor
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
renderWindowInteractor->SetRenderWindow(renderWindow);
// add the actors to the scene
renderer->AddActor(actor);
renderer->SetBackground( .2, .1, .3); // Background color dark purple
// render an image (lights and cameras are created automatically)
renderWindow->Render();
// begin mouse interaction
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
Please try the new VTKExamples website.
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(Frustum)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(Frustum MACOSX_BUNDLE Frustum.cxx)
if(VTK_LIBRARIES)
target_link_libraries(Frustum ${VTK_LIBRARIES})
else()
target_link_libraries(Frustum vtkHybrid vtkWidgets)
endif()
Download and Build Frustum
Click here to download Frustum. and its CMakeLists.txt file.
Once the tarball Frustum.tar has been downloaded and extracted,
cd Frustum/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:
./Frustum
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.