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Qt&Vtk-011-Cone6

2021-12-16 161

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简介： Qt&Vtk-011-Cone6

文章目录

Qt&Vtk-Cone6

1 代码搬运

1.1 cone6.h

1.2 cone6.cpp

2 运行效果

3 知识点

3.1 vtkBoxWidget

★ 源码 ★

Qt&Vtk-Cone6

今天我们又来搬运代码了，今天还是搞Cone，哈哈哈，已经是第六个Cone，不过这是最后一个了，还有点意思，先看看官方的例子。

1 代码搬运

1.1 cone6.h

#ifndef CONE6_H
#define CONE6_H
#include <QWidget>
#include <QTimer>
#include <QDebug>
#include <QString>
#include <QTextBrowser>
#include "QVTKOpenGLWidget.h"               //新版本，旧版QVTKWidget
#include "vtkAutoInit.h"
#include "vtkConeSource.h"
#include "vtkPolyDataMapper.h"
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkCamera.h"
#include "vtkActor.h"
#include "vtkCommand.h"
#include "vtkBoxWidget.h"
#include "vtkTransform.h"
#include "vtkInteractorStyleTrackballCamera.h"
namespace Ui {
class Cone6;
}
class vtkMyCallBack : public vtkCommand
{
public:
    static vtkMyCallBack *New()
    {
        return new vtkMyCallBack;
    }
    void Execute(vtkObject *caller, unsigned long eventId, void *callData) override;
};
class Cone6 : public QWidget
{
    Q_OBJECT
public:
    explicit Cone6(QWidget *parent = 0);
    ~Cone6();
    void startInteractor();
private:
    Ui::Cone6 *ui;
    vtkConeSource *cone = nullptr;
    vtkPolyDataMapper *mapper = nullptr;
    vtkActor *actor = nullptr;
    vtkRenderer *render = nullptr;
    vtkRenderWindowInteractor *iren = nullptr;
    vtkInteractorStyleTrackballCamera * style = nullptr;
    vtkBoxWidget *boxWidget = nullptr;
    vtkMyCallBack *callback = nullptr;
};
#endif // CONE6_H

1.2 cone6.cpp

#include "cone6.h"
#include "ui_cone6.h"
Cone6::Cone6(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Cone6)
{
    ui->setupUi(this);
    cone = vtkConeSource::New();
    cone->SetRadius(1);
    cone->SetResolution(20);
    cone->SetHeight(3);
    mapper = vtkPolyDataMapper::New();
    mapper->SetInputConnection(cone->GetOutputPort());
    actor = vtkActor::New();
    actor->SetMapper(mapper);
    render = vtkRenderer::New();
    render->AddActor(actor);
    render->SetBackground(0,0,1);
    ui->widget->GetRenderWindow()->AddRenderer(render);
    iren = vtkRenderWindowInteractor::New();
    iren->SetRenderWindow(ui->widget->GetRenderWindow());
    style = vtkInteractorStyleTrackballCamera::New();
    iren->SetInteractorStyle(style);
    boxWidget = vtkBoxWidget::New();
    boxWidget->SetInteractor(iren);
    boxWidget->SetPlaceFactor(1.25);
    boxWidget->SetProp3D(actor);
    boxWidget->PlaceWidget();
    callback = vtkMyCallBack::New();
    boxWidget->AddObserver(vtkCommand::InteractionEvent,callback);
    boxWidget->On();
    iren->Initialize();
}
Cone6::~Cone6()
{
    delete ui;
}
void Cone6::startInteractor()
{
    iren->Start();
}
void vtkMyCallBack::Execute(vtkObject *caller, unsigned long eventId, void *callData)
{
    vtkTransform *t = vtkTransform::New();
    vtkBoxWidget *widget = reinterpret_cast<vtkBoxWidget*>(caller);
    widget->GetTransform(t);
    widget->GetProp3D()->SetUserTransform(t);
    t->Delete();
}