VS QT VTK 左下角显示同步小坐标轴

主要参考

https://blog.csdn.net/qq_37996632/article/details/106415402
https://kitware.github.io/vtk-examples/site/Cxx/Qt/BorderWidgetQt

主要代码

#include "BorderWidgetQt.h"

#include <vtkBorderWidget.h>
#include <vtkCommand.h>
#include <vtkGenericOpenGLRenderWindow.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkPolyDataMapper.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderer.h>
#include <vtkSphereSource.h>
#include <vtkVersion.h>
#include <vtkAxesActor.h>
#include <vtkCamera.h>

class BorderCallback : public vtkCommand
{
    
public:
	BorderCallback()
	{
    
	}

	static BorderCallback* New()
	{
    
		return new BorderCallback;
	}

	virtual void Execute(vtkObject* vtkNotUsed(caller), unsigned long, void*)
	{
    
		// vtkBorderWidget *borderWidget =
		// reinterpret_cast<vtkBorderWidget*>(caller);
	}
};

// Constructor
BorderWidgetQt::BorderWidgetQt(QWidget* parent)
	: QMainWindow(parent)
{
    
	this->resize(600, 400);
	this->vtkWidget = new QVTKOpenGLNativeWidget(this);
	this->setCentralWidget(vtkWidget);
	vtkNew<vtkNamedColors> colors;

	// Sphere
	vtkNew<vtkSphereSource> sphereSource;
	sphereSource->Update();
	vtkNew<vtkPolyDataMapper> sphereMapper;
	sphereMapper->SetInputConnection(sphereSource->GetOutputPort());
	vtkNew<vtkActor> sphereActor;
	sphereActor->SetMapper(sphereMapper);
	sphereActor->GetProperty()->SetColor(colors->GetColor4d("Tomato").GetData());

	// VTK Renderer
	vtkNew<vtkRenderer> renderer;
	renderer->AddActor(sphereActor);
	renderer->SetBackground(colors->GetColor3d("SteelBlue").GetData());

	// 相机拉远
	renderer->ResetCamera();
	renderer->GetActiveCamera()->Zoom(1.5);
	// Connect VTK with Qt
	this->vtkWidget->renderWindow()->AddRenderer(renderer);

	// Add a border widget to the renderer
	//vtkNew<vtkBorderWidget> bw;
	//this->BorderWidget = bw;
	//this->BorderWidget->SetInteractor(this->vtkWidget->interactor());
	//this->BorderWidget->On();

	vtkSmartPointer<vtkAxesActor> axes_actor = vtkSmartPointer<vtkAxesActor>::New();
	axes_actor->SetPosition(0, 0, 0);
	axes_actor->SetTotalLength(2, 2, 2);
	axes_actor->SetShaftType(0);
	axes_actor->SetCylinderRadius(0.02);

	vtkSmartPointer<vtkOrientationMarkerWidget> widget =
		vtkSmartPointer<vtkOrientationMarkerWidget>::New();;
	this->BorderWidget = widget;
	widget->SetOrientationMarker(axes_actor);
	widget->SetInteractor(this->vtkWidget->interactor());
	widget->SetEnabled(1);
	widget->InteractiveOn();
}

效果