5 files changed, 277 insertions(+), 0 deletions(-)

A README.md
A main.cpp
A qtgl.cpp
A qtgl.h
A qtgl.pro

@@ 1,1 @@
+A really simple Qt + OpenGL template that displays a spinning cube.<
\ No newline at end of file

@@ 1,37 @@
+/*
+  main.cpp
+  
+  Copyright (c) 2013, Jeremiah LaRocco jeremiah.larocco@gmail.com
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include <QApplication>
+#include <iostream>
+
+#include "qtgl.h"
+
+int main(int argc, char *argv[]) {
+    QApplication app(argc, argv);
+    if (!QGLFormat::hasOpenGL()) {
+        std::cerr << "This system has no OpenGL support" << std::endl;
+        return 1;
+    }
+
+    QtGl sample;
+    sample.setWindowTitle(QObject::tr("QtGl"));
+    sample.resize(300,300);
+    sample.show();
+
+    return app.exec();
+}

@@ 1,167 @@
+/*
+  qtgl.cpp
+  
+  Copyright (c) 2013, Jeremiah LaRocco jeremiah.larocco@gmail.com
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include <QMainWindow>
+#include "qtgl.h"
+
+#ifdef __APPLE_CC__
+#include <OpenGL/gl.h>
+#include <OpenGL/glu.h>
+#else
+#include <GL/gl.h>
+#include <GL/glu.h>
+#endif
+
+#include <cmath>
+
+QtGl::QtGl(QWidget *parent) : QGLWidget(parent) {
+    setFormat(QGLFormat(QGL::DoubleBuffer | QGL::DepthBuffer));
+    connect(&timer, SIGNAL(timeout()), this, SLOT(timeout()));
+    timer.start(1000/60);
+    eps=0.001;
+}
+void QtGl::timeout() {
+    rotAngle += 1.0;
+    if (rotAngle >=360.0)
+        rotAngle=0.0;
+    updateGL();
+}
+
+void QtGl::initializeGL() {
+    qglClearColor(Qt::black);
+    glShadeModel(GL_SMOOTH);
+    rotAngle = 0.0;
+
+    mat_specular[0]=1.0;
+    mat_specular[1]=1.0;
+    mat_specular[2]=1.0;
+    mat_specular[3]=1.0;
+
+    mat_diffuse[0]=0.0;
+    mat_diffuse[1]=1.0;
+    mat_diffuse[2]=0.0;
+    mat_diffuse[3]=1.0;
+  
+    mat_shininess[0]=50.0;
+
+    light_position[0]=20.0;
+    light_position[1]=20.0;
+    light_position[2]=0.0;
+    light_position[3]=1.0;
+
+    light_color[0]=1.0;
+    light_color[1]=1.0;
+    light_color[2]=1.0;
+    light_color[3]=1.0;
+
+    lmodel_ambient[0]=0.2;
+    lmodel_ambient[1]=0.2;
+    lmodel_ambient[2]=0.2;
+    lmodel_ambient[3]=1.0;
+  
+    glEnable(GL_LIGHTING);
+    glEnable(GL_LIGHT0);
+    glEnable(GL_DEPTH_TEST);
+  
+    listName = glGenLists(1);
+
+    glNewList(listName, GL_COMPILE);
+
+    // Not the best way to draw a cube, but it works :-/
+    glBegin(GL_QUADS);
+    glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+
+    // Bottom
+    glVertex3f(-10,-10,-10); glNormal3f(0,0,-1);
+    glVertex3f(-10,10,-10); glNormal3f(0,0,-1);
+    glVertex3f(10,10,-10); glNormal3f(0,0,-1);
+    glVertex3f(10,-10,-10); glNormal3f(0,0,-1);
+
+    // Top
+    glVertex3f(-10,-10,10); glNormal3f(0,0,1);
+    glVertex3f(-10,10,10); glNormal3f(0,0,1);
+    glVertex3f(10,10,10); glNormal3f(0,0,1);
+    glVertex3f(10,-10,10); glNormal3f(0,0,1);
+
+    // Back
+    glVertex3f(-10,-10,-10); glNormal3f(-1,0,0);
+    glVertex3f(-10,10,-10); glNormal3f(-1,0,0);
+    glVertex3f(-10,10,10); glNormal3f(-1,0,0);
+    glVertex3f(-10,-10,10); glNormal3f(-1,0,0);
+
+    // Front
+    glVertex3f(10,-10,-10); glNormal3f(1,0,0);
+    glVertex3f(10,10,-10); glNormal3f(1,0,0);
+    glVertex3f(10,10,10); glNormal3f(1,0,0);
+    glVertex3f(10,-10,10); glNormal3f(1,0,0);
+
+    // Left
+    glVertex3f(-10,-10,-10); glNormal3f(0,-1,0);
+    glVertex3f(10,-10,-10); glNormal3f(0,-1,0);
+    glVertex3f(10,-10,10); glNormal3f(0,-1,0);
+    glVertex3f(-10,-10,10); glNormal3f(0,-1,0);
+
+    // Right
+    glVertex3f(-10,10,-10); glNormal3f(0,1,0);
+    glVertex3f(10,10,-10); glNormal3f(0,1,0);
+    glVertex3f(10,10,10); glNormal3f(0,1,0);
+    glVertex3f(-10,10,10); glNormal3f(0,1,0);
+    
+    glEnd();
+
+    glEndList();
+}
+
+void QtGl::resizeGL(int width, int height) {
+    glViewport(0,0, (GLsizei) width, (GLsizei)height);
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    gluPerspective(80, 1.0, 1.0, 140);
+    glMatrixMode(GL_MODELVIEW);
+
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+}
+
+void QtGl::paintGL() {
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+    glLoadIdentity();
+    gluLookAt(0.0,35.0,35.0,
+              0.0,0.0,0.0,
+              0.0,0.0,1.0);
+
+    glPushMatrix();
+    glLoadIdentity();
+
+    glLightfv(GL_LIGHT0, GL_POSITION, light_position);
+    glLightfv(GL_LIGHT0, GL_DIFFUSE, light_color);
+    glLightfv(GL_LIGHT0, GL_SPECULAR, light_color);
+    glPopMatrix();
+    glRotatef(rotAngle, 0,0,1);
+    glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
+
+    glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, mat_specular);
+    glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, mat_shininess);
+    glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_diffuse);
+
+
+    glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+    glCallList(listName);
+
+    glFlush();
+}

@@ 1,59 @@
+/*
+  qtgl.cpp
+  
+  Copyright (c) 2013, Jeremiah LaRocco jeremiah.larocco@gmail.com
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include <QtGui>
+#include <QtOpenGL>
+#include <QGLWidget>
+
+#ifdef __APPLE_CC__
+#include <OpenGL/gl.h>
+#include <OpenGL/glu.h>
+#else
+#include <GL/gl.h>
+#include <GL/glu.h>
+#endif
+
+class QtGl : public QGLWidget {
+    Q_OBJECT;
+
+public:
+    QtGl(QWidget *parent = 0);
+
+protected:
+    void initializeGL();
+    void resizeGL(int width, int height);
+    void paintGL();
+private slots:
+    void timeout();
+
+private:
+    QTimer timer;
+
+    GLuint listName;
+    GLfloat rotAngle;
+
+    GLfloat mat_specular[4];
+    GLfloat mat_shininess[1];
+    GLfloat mat_diffuse[4];
+
+    GLfloat light_position[4];
+    GLfloat light_color[4];
+    GLfloat lmodel_ambient[4];
+    double eps;
+
+};

@@ 1,13 @@
+######################################################################
+# Automatically generated by qmake (2.01a) Wed Nov 22 07:03:24 2006
+######################################################################
+
+TEMPLATE = app
+TARGET = qtgl
+DEPENDPATH += .
+INCLUDEPATH += .
+QT += opengl
+
+# Input
+HEADERS += qtgl.h
+SOURCES += main.cpp qtgl.cpp