QT學習VTK序列:Circle

學習繪製圓圈

/*
 * ModuleName: 模塊名稱
 * Description:
 * 參考代碼：https://lorensen.github.io/VTKExamples/site/Cxx/GeometricObjects/Circle/
 * Author: hsw
 * Date: 2020-03-15
 *
*/

// QT
#include <QMainWindow>
#include <QDebug>

// Classes specific to this example
#include <vtkRegularPolygonSource.h>
#include <vtkPolyData.h>
#include <vtkPolyDataMapper.h>
// Generic VTK pipeline elements
#include <vtkActor.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
// Auxiliary class
#include <vtkSmartPointer.h>
#include <vtkAutoInit.h>

// C++
#include <array>

namespace Ui {
class MainWindow;
}

VTK_MODULE_INIT(vtkRenderingOpenGL2);
VTK_MODULE_INIT(vtkInteractionStyle);
VTK_MODULE_INIT(vtkRenderingContextOpenGL2);
VTK_MODULE_INIT(vtkRenderingFreeType);

// For compatibility with new VTK generic data arrays
#ifdef vtkGenericDataArray_h
#define InsertNextTupleValue InsertNextTypedTuple
#endif

class MainWindow : public QMainWindow
{
    Q_OBJECT
public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();
private:
    Ui::MainWindow *ui;
private:
    vtkSmartPointer<vtkRegularPolygonSource>   source;
    vtkSmartPointer<vtkPolyDataMapper>         mapper;
    vtkSmartPointer<vtkActor>                  actor;
    vtkSmartPointer<vtkRenderer>               renderer;
};

 

#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    // vtkRegularPolygonSouce
    source = vtkSmartPointer<vtkRegularPolygonSource>::New();
    source->SetNumberOfSides(50);
    source->SetRadius(5);
    source->SetCenter(0, 0, 0);

    // vtkPolyDataMapper
    mapper = vtkSmartPointer<vtkPolyDataMapper>::New();
    mapper->SetInputConnection(source->GetOutputPort());

    // vtkActor
    actor = vtkSmartPointer<vtkActor>::New();
    actor->SetMapper(mapper);

    // vtkRender
    renderer = vtkSmartPointer<vtkRenderer>::New();
    renderer->AddActor(actor);
    renderer->SetBackground(0.3, 0.3, 0.5);

    // vtkRenderWindow
    ui->qvtkWidget->GetRenderWindow()->AddRenderer(renderer);
}

MainWindow::~MainWindow()
{
    delete ui;
}