QOpenGL显示点云文件

1. xxx.h文件

#ifndef QMYOPENGL_H
#define QMYOPENGL_H

#include <QOpenGLWidget>
#include <QOpenGLFunctions_3_3_Core>

class QMyOpenGL : public QOpenGLWidget, QOpenGLFunctions_3_3_Core
{
    Q_OBJECT
public:
    explicit QMyOpenGL(QWidget *parent = nullptr);

protected:
    virtual void initializeGL();
    virtual void resizeGL(int w, int h);
    virtual void paintGL();

signals:

public slots:
};

#endif // QMYOPENGL_H

2. xxx.cpp

#include "qmyopengl.h"

QMyOpenGL::QMyOpenGL(QWidget *parent) : QOpenGLWidget(parent)
{

}

void QMyOpenGL::initializeGL()
{
    initializeOpenGLFunctions();
    glEnable(GL_PROGRAM_POINT_SIZE);
    glEnable(GL_DEPTH_TEST);

}

void QMyOpenGL::resizeGL(int w, int h)
{

}

void QMyOpenGL::paintGL()
{
    glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
    glClear(GL_COLOR_BUFFER_BIT);

    glPointSize(5);

    glBegin(GL_POINTS);
    glColor3f(1.0, 1.0, 1.0);
    glVertex3d(0.0f, 0.0f, 0.0f);
    glEnd();
}

3. pro

#-------------------------------------------------
#
# Project created by QtCreator 2022-06-20T09:51:50
#
#-------------------------------------------------

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = Test3
TEMPLATE = app

# The following define makes your compiler emit warnings if you use
# any feature of Qt which as been marked as deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS

# You can also make your code fail to compile if you use deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0


SOURCES += \
        main.cpp \
        mainwindow.cpp \
    qmyopengl.cpp

HEADERS += \
        mainwindow.h \
    qmyopengl.h

FORMS += \
        mainwindow.ui

# win
LIBS += -lOpengl32 \
        -lglu32
# linux
LIBS += -lglut -lGLU