# Pyramid

VTKExamples/Cxx/GeometricObjects/Pyramid

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See (Python), (Java), (CSharp)

Question

### Code¶

Pyramid.cxx

#include <vtkActor.h>
#include <vtkCamera.h>
#include <vtkCellArray.h>
#include <vtkDataSetMapper.h>
#include <vtkNamedColors.h>
#include <vtkPoints.h>
#include <vtkProperty.h>
#include <vtkPyramid.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkSmartPointer.h>
#include <vtkUnstructuredGrid.h>

int main(int , char *[])
{
vtkSmartPointer<vtkPoints> points =
vtkSmartPointer<vtkPoints>::New();

float p0[3] = {1.0, 1.0, 1.0};
float p1[3] = {-1.0, 1.0, 1.0};
float p2[3] = {-1.0, -1.0, 1.0};
float p3[3] = {1.0, -1.0, 1.0};
float p4[3] = {0.0, 0.0, 0.0};

points->InsertNextPoint(p0);
points->InsertNextPoint(p1);
points->InsertNextPoint(p2);
points->InsertNextPoint(p3);
points->InsertNextPoint(p4);

vtkSmartPointer<vtkPyramid> pyramid =
vtkSmartPointer<vtkPyramid>::New();
pyramid->GetPointIds()->SetId(0,0);
pyramid->GetPointIds()->SetId(1,1);
pyramid->GetPointIds()->SetId(2,2);
pyramid->GetPointIds()->SetId(3,3);
pyramid->GetPointIds()->SetId(4,4);

vtkSmartPointer<vtkCellArray> cells =
vtkSmartPointer<vtkCellArray>::New();
cells->InsertNextCell (pyramid);

vtkSmartPointer<vtkUnstructuredGrid> ug =
vtkSmartPointer<vtkUnstructuredGrid>::New();
ug->SetPoints(points);
ug->InsertNextCell(pyramid->GetCellType(),pyramid->GetPointIds());

//Create an actor and mapper
vtkSmartPointer<vtkNamedColors> colors =
vtkSmartPointer<vtkNamedColors>::New();
vtkSmartPointer<vtkDataSetMapper> mapper =
vtkSmartPointer<vtkDataSetMapper>::New();
mapper->SetInputData(ug);

vtkSmartPointer<vtkActor> actor =
vtkSmartPointer<vtkActor>::New();
actor->SetMapper(mapper);
actor->GetProperty()->SetColor(colors->GetColor3d("Tomato").GetData());

//Create a renderer, render window, and interactor
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->SetWindowName("Pyramid");
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
renderWindowInteractor->SetRenderWindow(renderWindow);

// Create a nice view
renderer->ResetCamera();
renderer->GetActiveCamera()->Azimuth(180);
renderer->GetActiveCamera()->Elevation(-20);
renderer->ResetCameraClippingRange();

renderer->SetBackground(colors->GetColor3d("Silver").GetData());

renderWindow->Render();
renderWindowInteractor->Start();

return EXIT_SUCCESS;
}


### CMakeLists.txt¶

cmake_minimum_required(VERSION 3.3 FATAL_ERROR)

project(Pyramid)

find_package(VTK COMPONENTS
vtkCommonColor
vtkCommonCore
vtkCommonDataModel
vtkInteractionStyle
vtkRenderingCore
vtkRenderingFreeType
vtkRenderingOpenGL2 QUIET)
if (NOT VTK_FOUND)
message("Skipping Pyramid: ${VTK_NOT_FOUND_MESSAGE}") return () endif() message (STATUS "VTK_VERSION:${VTK_VERSION}")
if (VTK_VERSION VERSION_LESS "8.90.0")
# old system
include(${VTK_USE_FILE}) add_executable(Pyramid MACOSX_BUNDLE Pyramid.cxx ) target_link_libraries(Pyramid PRIVATE${VTK_LIBRARIES})
else ()
# include all components
target_link_libraries(Pyramid PRIVATE ${VTK_LIBRARIES}) # vtk_module_autoinit is needed vtk_module_autoinit( TARGETS Pyramid MODULES${VTK_LIBRARIES}
)
endif ()


cd Pyramid/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:

./Pyramid


WINDOWS USERS

Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.