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一、Qt DataVisualization组件安装

        在Qt安装时勾选 Qt Data Visualization组件，该组件包含相关三维图形绘制组件，利用其开发三维绘图功能需要勾选。

二、准备

 1、在项目的.pro文件中加上 QT += datavisualization

QT       += datavisualization

2、引用头文件及名字空间

#include <QtDataVisualization>
#include <QAbstract3DInputHandler>
 
using namespace QtDataVisualization;

三、ui设计

两个按钮，一个widget用于放置三维散点图表。

四、头文件代码 

#ifndef MAINWINDOW_H
#define MAINWINDOW_H#include <QMainWindow>#include <QVector3D>
#include <QDebug>
#include <QPointF>
#include <QtDataVisualization>
#include <QAbstract3DInputHandler>
#include <QSplitter>#define PI 3.1415
typedef QVector<QVector3D> MY_BUF3D ;using namespace QtDataVisualization;QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACEclass MainWindow : public QMainWindow
{Q_OBJECTpublic:MainWindow(QWidget *parent = nullptr);~MainWindow();private slots:void drawPoint(MY_BUF3D);void on_pushButton_1_clicked();void on_pushButton_2_clicked();private:Ui::MainWindow *ui;void initMap();void generateRandomPoints(QVector<QVector3D>& MY_BUF3D, int pointCount, float minX, float maxX, float minY, float maxY, float minZ, float maxZ);Q3DScatter *g_3Dgraph;QScatter3DSeries *g_3Dseries;//散点类型QtDataVisualization::Q3DCamera *g_camera;};
#endif // MAINWINDOW_H

五、源文件代码

#include "mainwindow.h"
#include "ui_mainwindow.h"#include <QSplitter>MainWindow::MainWindow(QWidget *parent): QMainWindow(parent), ui(new Ui::MainWindow)
{ui->setupUi(this);qRegisterMetaType<MY_BUF3D>("MY_BUF3D");this->setWindowTitle("UDP_Reciver");initMap();QSplitter *splitter = new QSplitter(Qt::Horizontal);splitter->addWidget(ui->widget);splitter->addWidget(ui->pushButton_2);splitter->addWidget(ui->pushButton_1);this->setCentralWidget(splitter);}MainWindow::~MainWindow()
{delete ui;
}
……………………void MainWindow::initMap()
{g_3Dgraph = new Q3DScatter();ui->widget = QWidget::createWindowContainer(g_3Dgraph);QScatterDataProxy *proxy = new QScatterDataProxy(); //数据代理g_3Dseries = new QScatter3DSeries(proxy);//创建序列g_3Dseries->setMeshSmooth(true);g_3Dgraph->addSeries(g_3Dseries);//创建坐标轴g_3Dgraph->axisX()->setTitle("axis X");g_3Dgraph->axisX()->setTitleVisible(true);g_3Dgraph->axisX()->setRange(-10,10);g_3Dgraph->axisY()->setTitle("axis Y");g_3Dgraph->axisY()->setTitleVisible(true);g_3Dgraph->axisY()->setRange(-10,10);g_3Dgraph->axisZ()->setTitle("axis Z");g_3Dgraph->axisZ()->setTitleVisible(true);g_3Dgraph->axisZ()->setRange(-50,50);g_3Dgraph->activeTheme()->setLabelBackgroundEnabled(false);g_3Dgraph->activeTheme()->setBackgroundColor(QColor(90,90,90));//设置背景色// 获取活动相机g_camera = g_3Dgraph->scene()->activeCamera();// 设置相机的方位角和仰角g_camera->setXRotation(45.0f);g_camera->setYRotation(30.0f);// 设置相机的距离g_camera->setZoomLevel(150.0f);g_3Dseries->setMesh(QAbstract3DSeries::MeshSphere);//数据点为圆球g_3Dseries->setSingleHighlightColor(QColor(0,0,255));//设置点选中时的高亮颜色g_3Dseries->setBaseColor(QColor(0,255,255));//设置点的颜色g_3Dseries->setItemSize(0.05);//设置点的大小
}