程序示例精选
Qt+VTK鼠标拾取点生成拉伸闭合三维体
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前言
这篇博客针对《Qt+VTK鼠标拾取点生成拉伸闭合三维体》编写代码，代码整洁，规则，易读。 学习与应用推荐首选。
运行结果
文章目录
一、所需工具软件
二、使用步骤
1. 主要代码
2. 运行结果
三、在线协助
一、所需工具软件
1. VS2019, Qt
2. C++
二、使用步骤
代码如下（示例）：
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <vtkActor.h>
#include <vtkCellArray.h>
#include <vtkInteractorStyleTrackballCamera.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkObjectFactory.h>
#include <vtkPlaneSource.h>
#include <vtkPoints.h>
#include <vtkPolyData.h>
#include <vtkPolyDataMapper.h>
#include <vtkPropPicker.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkRendererCollection.h>
#include <vtkSphereSource.h>
#include <vtkSTLReader.h>
#include <vtkRenderer.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkPolyData.h>
#include <vtkPoints.h>
#include <vtkPolyDataMapper.h>
#include <vtkActor.h>
#include <vtkVertexGlyphFilter.h>
#include <vtkUnsignedCharArray.h>
#include <vtkPointData.h>
#include <vtkGlyph3D.h>
#include <vtkSphereSource.h>
#include <vtkActor.h>
#include <vtkGenericOpenGLRenderWindow.h>
#include <vtkNamedColors.h>
#include <vtkPolyDataMapper.h>
#include <vtkRenderer.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkSTLReader.h>
#include <vtkClipPolyData.h>
#include <vtkSelectPolyData.h>
#include <Eigen/Dense>
#include <vtkPlane.h>
#include <vtkLookupTable.h>
#include <vtkBooleanOperationPolyDataFilter.h>
#include <vtkDelaunay2D.h>
#include <vtkLinearExtrusionFilter.h>
#include <vtkPolygon.h>
namespace {
// Handle mouse events
class MouseInteractorStyle2 : public vtkInteractorStyleTrackballCamera
{
public:
static MouseInteractorStyle2* New();
vtkTypeMacro(MouseInteractorStyle2, vtkInteractorStyleTrackballCamera);
vtkNew<vtkNamedColors> colors;
virtual void OnLeftButtonDown() override
{
if (!pickingModeActive)
{
int* clickPos = this->GetInteractor()->GetEventPosition();
vtkNew<vtkPropPicker> picker;
picker->Pick(clickPos[0], clickPos[1], 0, this->GetDefaultRenderer());
double* pos = picker->GetPickPosition();
std::cout << "Pick position (world coordinates) is: " << pos[0] << " "
<< pos[1] << " " << pos[2] << std::endl;
double* newPoint = new double[3];
newPoint[0] = pos[0];
newPoint[1] = pos[1];
newPoint[2] = pos[2];
collectedPoints.push_back(newPoint);
auto pickedActor = picker->GetActor();
if (pickedActor == nullptr)
{
std::cout << "No actor picked." << std::endl;
}
} // namespace
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::MainWindow)
{
ui->setupUi(this);
QObject::connect(ui->actionOpen_File_3, &QAction::triggered, this, &MainWindow::on_actionPickPoint_triggered);
QObject::connect(ui->actionStart, &QAction::triggered, this, &MainWindow::actionPickPointStart);
renderer = vtkSmartPointer<vtkRenderer>::New();
renderer->SetBackground(0.1, 0.2, 0.4);
ui->widget->GetRenderWindow()->AddRenderer(renderer);
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::actionPickPointStart()
{
pickingModeActive = !pickingModeActive;
}
void MainWindow::actionPickPointClose()
{
pickingModeActive = !pickingModeActive;
}
void MainWindow::actionPickPoint()
{
vtkNew<vtkNamedColors> colors;
vtkNew<vtkSphereSource> sphereSource;
sphereSource->SetRadius(5);
sphereSource->Update();
vtkNew<vtkPolyDataMapper> mapper;
mapper->SetInputConnection(sphereSource->GetOutputPort());
vtkNew<vtkActor> actor;
actor->SetMapper(mapper);
actor->GetProperty()->SetColor(colors->GetColor3d("MistyRose").GetData());
// Create the RenderWindow, Renderer
vtkNew<vtkRenderer> renderer;
vtkNew<vtkRenderWindow> renderWindow;
renderWindow->AddRenderer(renderer);
renderWindow->SetWindowName("PolygonalSurfacePointPlacer");
vtkNew<vtkRenderWindowInteractor> interactor;
interactor->SetRenderWindow(renderWindow);
renderer->AddActor(actor);
renderer->SetBackground(colors-
}
运行结果
三、在线协助：
如需安装运行环境或远程调试，见文章底部个人 QQ 名片，由专业技术人员远程协助！
1）远程安装运行环境，代码调试
2）Visual Studio, Qt, C++, Python编程语言入门指导
3）界面美化
4）软件制作
5）云服务器申请
6）网站制作
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