基于Qt的OpenGL编程并能实现相应按钮点击事件

#include "oglfootball.h" #include <QtCore> #include <QMessageBox> #include <qdebug.h> OGLfootball::OGLfootball(QWidget *parent) : QOpenGLWidget(parent) { //定时器信号与槽 connect(testTimer, SIGNAL(timeout()), this, SLOT(timerUpDate())); } OGLfootball::~OGLfootball() { } void OGLfootball::initializeGL() { //初始化OpenGL函数 initializeOpenGLFunctions(); //设置全局变量 glClearColor(0.8f, 0.8f, 0.8f, 1.0f); } void OGLfootball::paintGL() { //初始化OpenGL函数 initializeOpenGLFunctions(); //清理屏幕 glClear(GL_COLOR_BUFFER_BIT); glMatrixMode(GL_PROJECTION); glLoadIdentity(); glOrtho(-35.0, 35.0, -35.0, 35.0, -100, 100); glPointSize(1); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); gluLookAt(23, 23, 26, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0); glPushMatrix();//旋转除坐标轴之外的物体 glRotated(yRot, 0.0, 1.0, 0.0); glRotated(xRot, 1.0, 0.0, 0.0); //画球场 background(); //画坐标系 axis(44); glPushMatrix(); glRotated(90.0, 0, 1.0, 0);//绕y轴正方向旋转90度 axis(35); glPopMatrix(); glPushMatrix(); glRotated(-90.0, 1.0, 0.0, 0.0);//绕x轴负方向旋转 axis(35); glPopMatrix(); glPopMatrix(); } void OGLfootball::resizeGL(int width, int height) { //未使用 Q_UNUSED(width); Q_UNUSED(height); } void OGLfootball::keyPressEvent(QKeyEvent *e) { switch (e->key()) { case Qt::Key_Right: //Right按下减少 yRot += 5.0f; update(); break; case Qt::Key_Left: //Left按下增加 yRot -= 5.0f; update(); break; case Qt::Key_Up: //up按下减少 xRot -= 5.0f; update(); break; case Qt::Key_Down: //down按下增加 xRot += 5.0f; update(); break; } } void OGLfootball::axis(double length)//画坐标系 { glLineWidth(1);//设置线宽 glColor3f(0.0f, 0.0f, 0.0f); glPushMatrix(); glBegin(GL_LINES); glVertex3d(0.0, 0.0, 0.0); glVertex3d(0.0, 0.0, length); glEnd(); //将当前操作点移到指定位置 /* glTranslated(0.0, 0.0, length - 2); glColor3f(1.0, 0.0, 0.0); glutWireCone(0.4, 4, 5, 5);//第一个参数底面半径，第二个参数圆锥高度，第三个和第四个分别为经纬 */ glPopMatrix(); } void OGLfootball::background()//画足球场和足球飞行轨迹，在paintGL中被调用 { //画球场 glColor3f(0.0, 1.0, 0.0); glBegin(GL_POLYGON); glVertex3f(18, 0, 35); glVertex3f(-16, 0, 35); glVertex3f(-16, 0, -35); glVertex3f(18, 0, -35); glEnd(); glLineWidth(2);//设置线宽 //球场边界 glColor3f(1.0, 1.0, 1.0); glBegin(GL_LINE_STRIP); glVertex3f(18, 0, 35); glVertex3f(-16, 0, 35); glVertex3f(-16, 0, -35); glVertex3f(18, 0, -35); glEnd(); //画罚球区 glColor3f(1.0, 1.0, 1.0); glBegin(GL_LINE_STRIP); glVertex3f(-16, 0, 20); glVertex3f(0, 0, 20); glVertex3f(0, 0, -20); glVertex3f(-16, 0, -20); glEnd(); //画球门区 glColor3f(1.0, 1.0, 1.0); glBegin(GL_LINE_STRIP); glVertex3f(-16, 0, 9); glVertex3f(-10.5, 0, 9); glVertex3f(-10.5, 0, -9); glVertex3f(-16, 0, -9); glEnd(); //画球门 glColor3f(1.0, 1.0, 0.0); glBegin(GL_LINE_STRIP); glVertex3f(-16, 0, 3.5); glVertex3f(-16, 2.5, 3.5); glVertex3f(-16, 2.5, -3.5); glVertex3f(-16, 0, -3.5); glEnd(); GLGridSide(-18, 0, 3.5, -16, 2.5, 3.5, 5, 5);//画左侧球门网 GLGridSide(-18, 0, -3.5, -16, 2.5, -3.5, 5, 5);//画右侧球门网 GLGridBack(-18, 0, -3.5, -18, 2.5, 3.5, 5, 5);//画后球门网 GLGridTop(-16, 2.5, 3.5, -18, 2.5, -3.5, 5, 5);//画顶球门网 //画轨迹 flag=1表示点击绘图按钮开始绘图 if (flag == 1) { ballTrack(l); } if (l < num) { testTimer->start(1); } else if (win){ win = false; double rx = x[num],rz = z[num]; QMessageBox::information(this, QString::fromLocal8Bit("消息"), QStringLiteral("进球得分")/* + QString::number(rx) + QString::number(rx)*/); } } void OGLfootball::readData()//读data坐标数据 { QFile f("F:/MATLAB/work/data.txt"); if (!f.open(QIODevice::ReadOnly | QIODevice::Text)) { QMessageBox::information(NULL, "title1", "fail"); exit(1); } QTextStream txtInput(&f); QString lineStr; lineStr = txtInput.readLine(); int i = 1; num = lineStr.toInt(); x = new double[num]; Vx = new double[num]; y = new double[num]; Vy = new double[num]; z = new double[num]; Vz = new double[num]; // QMessageBox::information(NULL, "title2", lineStr + QString::number(num));//对数组不起作用 while (!txtInput.atEnd()) { lineStr = txtInput.readLine(); if (lineStr.isEmpty())continue; QStringList strlist = lineStr.split(QRegExp("[\t]"));//正则表达式分割 x[i] = strlist.at(0).toDouble(); Vx[i] = strlist.at(3).toDouble(); y[i] = strlist.at(1).toDouble(); Vy[i] = strlist.at(4).toDouble(); z[i] = strlist.at(2).toDouble(); Vz[i] = strlist.at(5).toDouble(); if (y[i] > 16) { if (x[i]<3.5&&x[i]>-3.5&&z[i] < 2.5)win = true; break;//判断球是否到球门 } i++; } } void OGLfootball::setballTrack() { readData(); flag = 1; l = 1; this->setFocus();//使opengl控件获得焦点从而可以响应键盘按键 testTimer->start(0); // QMessageBox::information(NULL, "title2", QString::number(l)); } void OGLfootball::ballTrack(int length) { //画足球轨迹 glLineWidth(3);//设置线宽 glColor3f(1.0, 0.0, 0.0); glBegin(GL_LINE_STRIP); for (int i = 1; i <= length; i++ ) { glVertex3f(-y[i], z[i], -x[i]); } glEnd(); } void OGLfootball::timerUpDate() { if (l + 5 > num)l++;//如果有等号的话，l就会比实际多1 else l = l + 5; testTimer->stop(); update(); } void OGLfootball::GLGridSide(double x1, double y1, double z1, double x2, double y2, double z2, int n, int m) { double h, w; h = abs(y2 - y1) / n; w = abs(x2 - x1) / m; glLineWidth(1);//设置线宽 for (int i = 0; i <= n; i++) { glColor3f(1.0, 1.0, 1.0); glBegin(GL_LINES); glVertex3f(x1, y1 + i*h, z1); glVertex3f(x2, y1 + i*h, z2); glEnd(); } for (int i = 0; i <= m; i++) { glColor3f(1.0, 1.0, 1.0); glBegin(GL_LINES); glVertex3f(x1 + i*w, y1, z1); glVertex3f(x1 + i*w, y2, z2); glEnd(); } } void OGLfootball::GLGridBack(double x1, double y1, double z1, double x2, double y2, double z2, int n, int m) { double h, w; h = abs(y2 - y1) / n; w = abs(z2 - z1) / m; glLineWidth(1);//设置线宽 for (int i = 0; i <= n; i++) { glColor3f(1.0, 1.0, 1.0); glBegin(GL_LINES); glVertex3f(x1, y1 + i*h, z1); glVertex3f(x2, y1 + i*h, z2); glEnd(); } for (int i = 0; i <= m; i++) { glColor3f(1.0, 1.0, 1.0); glBegin(GL_LINES); glVertex3f(x1, y1, z1 + i*w); glVertex3f(x2, y2, z1 + i*w); glEnd(); } } void OGLfootball::GLGridTop(double x1, double y1, double z1, double x2, double y2, double z2, int n, int m) { double h, w; h = abs(x2 - x1) / n; w = abs(z2 - z1) / m; glLineWidth(1);//设置线宽 for (int i = 0; i <= n; i++) { glColor3f(1.0, 1.0, 1.0); glBegin(GL_LINES); glVertex3f(x2 + i*h, y1, z1); glVertex3f(x2 + i*h, y2, z2); glEnd(); } for (int i = 0; i <= m; i++) { glColor3f(1.0, 1.0, 1.0); glBegin(GL_LINES); glVertex3f(x1, y1, z2 + i*w); glVertex3f(x2, y2, z2 + i*w); glEnd(); } }