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/***************************************************************************
* qt_example.cpp is part of Math Graphic Library
* Copyright (C) 2007-2016 Alexey Balakin <mathgl.abalakin@gmail.ru> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "qgl_example.h"
#include <QApplication>
#if (QT_VERSION_MAJOR>5)
#define QGLWidget QOpenGLWidget
#include <QOpenGLContext>
#endif
//#include <QtOpenGL>
//-----------------------------------------------------------------------------
MainWindow::MainWindow(QWidget *parent) : QGLWidget(parent) { gr=0; }
//-----------------------------------------------------------------------------
MainWindow::~MainWindow() { if(gr) delete gr; }
//-----------------------------------------------------------------------------
void MainWindow::initializeGL() // recreate instance of MathGL core
{
if(gr) delete gr;
gr = new mglGraph(1); // use '1' for argument to force OpenGL output in MathGL
}
//-----------------------------------------------------------------------------
void MainWindow::resizeGL(int w, int h) // standard resize replace
{
QGLWidget::resizeGL(w, h);
glViewport (0, 0, w, h);
}
//-----------------------------------------------------------------------------
void MainWindow::paintGL() // main drawing function
{
gr->Clf(); // clear previous OpenGL primitives
gr->SubPlot(1,1,0);
gr->Rotate(40,60);
gr->Light(true);
gr->AddLight(0,mglPoint(0,0,10),mglPoint(0,0,-1));
gr->Axis();
gr->Box();
gr->FPlot("sin(pi*x)","i2");
gr->FPlot("cos(pi*x)","|");
gr->FSurf("cos(2*pi*(x^2+y^2))");
gr->Finish();
#if (QT_VERSION_MAJOR<6)
swapBuffers(); // show output on the screen
#endif
}
//-----------------------------------------------------------------------------
int main(int argc, char *argv[]) // create application
{
mgl_textdomain(argv?argv[0]:NULL,"");
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}
//-----------------------------------------------------------------------------
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