How to fix error: no matching constructor for initialization of "QVector3D"?

Question

Qt

How to fix no matching constructor for initialization of "QVector3D" error?
Here is my code:

#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMatrix4x4>
#include <QMainWindow>
#include <QGLWidget>
#include <QOpenGLWidget>
#include <QOpenGLShaderProgram>
#include "QOpenGLTexture"
#include "QOpenGLBuffer"

QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE

struct Vertexofcube {
    Vertexofcube(){

    }
    Vertexofcube(QVector3D p, QVector2D t, QVector3D n):
    position(p), textureposition(t), normal(n)
    {

    }

    QVector3D position;
    QVector2D textureposition;
    QVector3D normal;
};
class MainWindow : public QOpenGLWidget
{
    Q_OBJECT

public slots:
     void FixedPaint();

public:
    MainWindow(QWidget *parent = nullptr);
    ~MainWindow();
    int nWidth ,nHeight; // Размеры окна нашей программы
    void initializeGL(); // Метод для инициализирования opengl
    void resizeGL(int nWidth, int nHeight); // Метод вызываемый после каждого изменения размера окна
    void paintGL(); // Метод для вывода изображения на экран
    void initCube();
    void initShaders();
    float width;
protected:

  QOpenGLBuffer Buffer1, IndexBuffer1;
  QOpenGLTexture *texture1;
  QOpenGLShaderProgram shaderprogram;
  QMatrix4x4 projectionmatrix;

private:
    Ui::MainWindow *ui;
};
#endif // MAINWINDOW_H

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QMatrix4x4>

void MainWindow::FixedPaint()
{

}

MainWindow::MainWindow(QWidget *parent)
    : QOpenGLWidget(parent)
    ,IndexBuffer1(QOpenGLBuffer::IndexBuffer), texture1(0)
{


}

void MainWindow::initializeGL()
{
    glClearColor(0.8,0.10,0.10,1);
    glViewport( 0, 0, nWidth, nHeight );
            glLoadIdentity();
    glEnable(GL_DEPTH_TEST);
    glEnable(GL_CULL_FACE);
    initShaders();
    initCube();
}

void MainWindow::resizeGL(int nWidth, int nHeight)
{
    float aspect = nWidth / (float)nHeight;
    projectionmatrix.setToIdentity();
    projectionmatrix.perspective(45, aspect, 0.1, 10);
}

void MainWindow::paintGL()
{
  glClear(GL_COLOR_BUFFER_BIT| GL_DEPTH_BUFFER_BIT);

}

void MainWindow::initCube() //функция для создания куба
{
    float width2 =  width / 2.0f;// 
    QVector<Vertexofcube> vertexes;
    vertexes.append(Vertexofcube(QVector3D(-width2,width2,width2, QVector2D(0,1), QVector3D(0,0,1) ) ));// эта строка подчеркивается

}

void MainWindow::initShaders()
{
  if (!shaderprogram.addShaderFromSourceFile(QOpenGLShader::Vertex,":/vertexshader1.vsh")){
      close();
  }
  if (!shaderprogram.addShaderFromSourceFile(QOpenGLShader::Fragment,":/fragmentshader1.fsh")){
      close();
  }
  if (!shaderprogram.link()){
      close();
  }
}


MainWindow::~MainWindow()
{
    delete ui;
}

Answer 1

QVector3D does not have a QVector3D(const QVector3D &vector) constructor, only those described in the documentation https://doc.qt.io/qt-5/qvector3d.html
Therefore, position(p) and normal(n) initializations are not valid.
Use any other QVector3D object constructor available to solve the problem.