用QT给我写一个可以显示点云的代码并给配上注释
时间: 2023-03-26 12:00:16 浏览: 92
好的,以下是可以显示点云的 QT 代码,已经配上了注释:
```c++
#include <QApplication>
#include <QMainWindow>
#include <QVTKOpenGLWidget.h>
#include <vtkSmartPointer.h>
#include <vtkPLYReader.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
// 创建主窗口
QMainWindow mainWindow;
// 创建 VTK 渲染窗口
QVTKOpenGLWidget *vtkWidget = new QVTKOpenGLWidget(&mainWindow);
vtkWidget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
mainWindow.setCentralWidget(vtkWidget);
// 读取点云数据
vtkSmartPointer<vtkPLYReader> reader = vtkSmartPointer<vtkPLYReader>::New();
reader->SetFileName("point_cloud.ply");
reader->Update();
// 创建点云映射器
vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New();
mapper->SetInputConnection(reader->GetOutputPort());
// 创建点云演员
vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New();
actor->SetMapper(mapper);
// 创建渲染器
vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();
renderer->AddActor(actor);
renderer->SetBackground(.1, .2, .4);
// 创建渲染窗口
vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);
renderWindow->SetSize(800, 600);
// 创建交互器
vtkSmartPointer<vtkRenderWindowInteractor> interactor = vtkSmartPointer<vtkRenderWindowInteractor>::New();
interactor->SetRenderWindow(renderWindow);
// 显示窗口
mainWindow.show();
// 开始渲染
renderWindow->Render();
interactor->Start();
return a.exec();
}
```
希望这个代码对你有所帮助!