Generation and rendering of VTK cylinder

One 、 Simple VTK Program

1、 Code example

#include <vtkRenderWindow.h>
#include <vtkSmartPointer.h>
#include <vtkAutoInit.h> 

VTK_MODULE_INIT(vtkRenderingOpenGL2);
VTK_MODULE_INIT(vtkInteractionStyle);

int main()
{
    
	vtkSmartPointer<vtkRenderWindow> renWin = vtkSmartPointer<vtkRenderWindow>::New();// Define a with a smart pointer vtkRenderWindow object 
	renWin->Render();// Display and render VTK window 

	renWin->SetWindowName("TestVTKInstall");
	renWin->SetSize(640, 480);
	renWin->Render();

	std::cin.get();
	return EXIT_SUCCESS;
}

Two 、 Generate a cylinder

1、 Code implementation

#include <vtkAutoInit.h> 
VTK_MODULE_INIT(vtkRenderingOpenGL2);
VTK_MODULE_INIT(vtkInteractionStyle);
#include <vtkSmartPointer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkInteractorStyleTrackballCamera.h>
#include <vtkCylinderSource.h>// Generate a cylinder centered at the origin of the rendered scene 
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkProperty.h>
#include <vtkPLYWriter.h>

int main()
{
    
	//--------------- Generate a cylinder centered at the origin of the rendered scene ---------------
	// Along the long axis of the cylinder Y Axis , The height of the column, the section radius, etc. can be arbitrarily specified 
	vtkSmartPointer<vtkCylinderSource> cylinder = vtkSmartPointer<vtkCylinderSource>::New();
	cylinder->SetHeight(3.0);// Sets the height of the column 
	cylinder->SetRadius(1.0);// Set the radius of the cylinder 
	cylinder->SetResolution(10);// Sets the number of sides of the equilateral polygon of the column cross section  
	//--------------- Used to render polygon geometry data -------------------------
	vtkSmartPointer<vtkPolyDataMapper> cylinderMapper = vtkSmartPointer<vtkPolyDataMapper>::New();
	cylinderMapper->SetInputConnection(cylinder->GetOutputPort()); //VTK Input data interface of visual pipeline 

	vtkSmartPointer<vtkActor> cylinderActor = vtkSmartPointer<vtkActor>::New();
	cylinderActor->SetMapper(cylinderMapper);
	cylinderActor->GetProperty()->SetColor(0.0, 0.0, 1.0);

	//------------------- Write as PLY Format file --------------------------
	vtkSmartPointer<vtkPLYWriter>  plywriter = vtkSmartPointer<vtkPLYWriter>::New();
	plywriter->SetFileName("cylinder.ply");
	plywriter->SetInputConnection(cylinder->GetOutputPort());
	plywriter->Write();
	plywriter->Update();
	//---------------------- Manage scene rendering passes ------------------
	vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();
	renderer->AddActor(cylinderActor);
	renderer->SetBackground(1.0, 1.0, 1.0);//RGB Value range 0~1
	//---------------------- Set window parameters ----------------------
	vtkSmartPointer<vtkRenderWindow> renWin = vtkSmartPointer<vtkRenderWindow>::New();
	renWin->AddRenderer(renderer);
	renWin->SetSize(640, 480);// Set window size , In pixels 
	renWin->Render();
	renWin->SetWindowName("RenderCylinder");
	//--------------------- Interaction mechanism --------------------------
	vtkSmartPointer<vtkRenderWindowInteractor> iren = vtkSmartPointer<vtkRenderWindowInteractor>::New();
	iren->SetRenderWindow(renWin);

	vtkSmartPointer<vtkInteractorStyleTrackballCamera> style = vtkSmartPointer<vtkInteractorStyleTrackballCamera>::New();
	iren->SetInteractorStyle(style);

	iren->Initialize();
	iren->Start();

	return EXIT_SUCCESS;
}

2、 Result display