#include "VTKCamera.h" #include <vtkConeSource.h> #include <vtkSTLReader.h> #include <vtkPolyDataMapper.h> #include <vtkActor.h> #include <vtkRenderer.h> #include <vtkRenderWindow.h> #include <vtkShrinkPolyData.h> #include <vtkCamera.h> #include <vtkLight.h> VTKCamera::VTKCamera(QWidget *parent) : QMainWindow(parent) { ui.setupUi(this); _pVTKWidget = new QVTKOpenGLNativeWidget(); this->setCentralWidget(_pVTKWidget); // this->showMaximized(); // 1. generate data vtkSmartPointer<vtkConeSource> cone = vtkSmartPointer<vtkConeSource>::New(); cone->SetResolution(20); // or, read data // vtkSmartPointer<vtkSTLReader> reader = vtkSmartPointer<vtkSTLReader>::New(); // reader->SetFileName("42400-IDGH.stl"); // 2. filter vtkSmartPointer<vtkShrinkPolyData> shrink = vtkSmartPointer<vtkShrinkPolyData>::New(); shrink->SetShrinkFactor(0.6); // 3. mapper vtkSmartPointer<vtkPolyDataMapper> mapper = vtkSmartPointer<vtkPolyDataMapper>::New(); // 4. actor vtkSmartPointer<vtkActor> actor = vtkSmartPointer<vtkActor>::New(); // 5. renderer vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); renderer->SetBackground(0.3, 0.6, 0.3); // 6. connect // shrink->SetInputConnection(cone->GetOutputPort()); // mapper->SetInputConnection(cone->GetOutputPort()); mapper->SetInputConnection(cone->GetOutputPort()); actor->SetMapper(mapper); renderer->AddActor(actor); vtkCamera* camera = renderer->GetActiveCamera(); camera->SetFocalPoint(0, 0, 0); // 设置焦点，默认为 (0, 0, 0) camera->SetPosition(5, 0, 0); // 设置相机位置，默认为 (0, 0, 1) camera->SetViewUp(0, 1, 0); // 设置相机的朝上方向，默认为 (0, 1, 0) // camera->Zoom(0.5); // 缩放视角 // camera->Elevation(60); // 垂直旋转相机 vtkSmartPointer<vtkLight> light = vtkSmartPointer<vtkLight>::New(); light->SetFocalPoint(camera->GetFocalPoint()); light->SetPosition(0, 1, 0); light->SetColor(1, 0, 0); renderer->AddLight(light); this->_pVTKWidget->renderWindow()->AddRenderer(renderer); this->_pVTKWidget->renderWindow()->Render(); } VTKCamera::~VTKCamera() {}