// 引入VTK并初始化
#include "vtkAutoInit.h"
VTK_MODULE_INIT(vtkRenderingOpenGL2);
VTK_MODULE_INIT(vtkInteractionStyle);#include <vtkActor.h>
#include <vtkCamera.h>
#include <vtkConvexPointSet.h>
#include <vtkDataSetMapper.h>
#include <vtkGlyph3DMapper.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkPoints.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkSphereSource.h>
#include <vtkUnstructuredGrid.h>int main()
{// 创建一个凸多边形点集vtkNew<vtkConvexPointSet> cps;vtkNew<vtkPoints> points;// 插入点的坐标// 共有13个点，描述一个凸多边形// 前8个点构成一个立方体，后5个点在底面中心和四个边的中心points->InsertNextPoint(0, 0, 0);points->InsertNextPoint(1, 0, 0);points->InsertNextPoint(1, 1, 0);points->InsertNextPoint(0, 1, 0);points->InsertNextPoint(0, 0, 1);points->InsertNextPoint(1, 0, 1);points->InsertNextPoint(1, 1, 1);points->InsertNextPoint(0, 1, 1);points->InsertNextPoint(0.5, 0, 0);points->InsertNextPoint(1, 0.5, 0);points->InsertNextPoint(0.5, 1, 0);points->InsertNextPoint(0, 0.5, 0);points->InsertNextPoint(0.5, 0.5, 0);for (int i = 0; i < 13; ++i){// 将点的ID插入凸多边形点集cps->GetPointIds()->InsertId(i, i);}// 创建一个非结构化网格并设置其几何数据vtkNew<vtkUnstructuredGrid> ug;ug->Allocate(1, 1);ug->InsertNextCell(cps->GetCellType(), cps->GetPointIds());ug->SetPoints(points);// 创建命名颜色对象vtkNew<vtkNamedColors> colors;// 创建数据集映射器vtkNew<vtkDataSetMapper> mapper;mapper->SetInputData(ug);// 创建演员（Actor）并设置其属性vtkNew<vtkActor> actor;actor->SetMapper(mapper);actor->GetProperty()->SetColor(colors->GetColor3d("Tomato").GetData());actor->GetProperty()->SetLineWidth(3);actor->GetProperty()->EdgeVisibilityOn();// 为点创建球体源vtkNew<vtkSphereSource> sphere;sphere->SetPhiResolution(21);sphere->SetThetaResolution(21);sphere->SetRadius(.03);// 创建用于存储点和球体的多边形数据vtkNew<vtkPolyData> polyData;polyData->SetPoints(points);// 创建点的球体映射器vtkNew<vtkGlyph3DMapper> pointMapper;pointMapper->SetInputData(polyData);pointMapper->SetSourceConnection(sphere->GetOutputPort());// 创建点的演员并设置其属性vtkNew<vtkActor> pointActor;pointActor->SetMapper(pointMapper);pointActor->GetProperty()->SetColor(colors->GetColor3d("Peacock").GetData());// 创建渲染器、渲染窗口和交互器vtkNew<vtkRenderer> renderer;vtkNew<vtkRenderWindow> renderWindow;renderWindow->SetWindowName("ConvexPointSet");renderWindow->AddRenderer(renderer);vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;renderWindowInteractor->SetRenderWindow(renderWindow);// 将演员添加到场景中renderer->AddActor(actor);renderer->AddActor(pointActor);renderer->SetBackground(colors->GetColor3d("Silver").GetData());// 重置相机位置并设置视角renderer->ResetCamera();renderer->GetActiveCamera()->Azimuth(210);renderer->GetActiveCamera()->Elevation(30);renderer->ResetCameraClippingRange();// 渲染并交互renderWindow->SetSize(640, 480);renderWindow->Render();renderWindowInteractor->Start();return 0;
}