teaservice.cpp Example File

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 #include <QGuiApplication>
 #include <QKeyEvent>
 #include <QDebug>
 #include <QTimer>

 #include "qglview.h"
 #include "meshobject.h"
 #include "sceneobject.h"
 #include "qglteapot.h"
 #include "qglbuilder.h"
 #include "perpixeleffect.h"

 enum {
     ObjTeapot,
     ObjTeacup1,
     ObjTeacup2,
     ObjTeaspoon1,
     ObjTeaspoon2
 };

 class Teapot : public MeshObject
 {
     Q_OBJECT
 public:
     Teapot(QObject *parent=0);
     ~Teapot() {}
 };

 static QGLSceneNode *createTeapot(QObject *parent)
 {
     QGLBuilder builder;
     builder << QGLTeapot();
     QGLSceneNode *n = builder.finalizedSceneNode();
     n->setParent(parent);
     return n;
 }

 Teapot::Teapot(QObject *parent)
     : MeshObject(createTeapot(parent), parent)
 {
 }

 class Teacup : public MeshObject
 {
     Q_OBJECT
 public:
     Teacup(QObject *parent=0);
     ~Teacup() {}
 };

 static QGLAbstractScene *loadBezier(const QString& fileName)
 {
     QGLAbstractScene *scene;
     scene = QGLAbstractScene::loadScene(fileName, QLatin1String("bezier"));
     if (!scene)
         qFatal("Could not load %s, probably plugin could not be found",
                fileName.toLatin1().constData());
     return scene;
 }

 Teacup::Teacup(QObject *parent)
     : MeshObject(loadBezier(QLatin1String(":/teacup.txt")), parent)
 {
 }

 class Teaspoon : public MeshObject
 {
     Q_OBJECT
 public:
     Teaspoon(QObject *parent=0);
     ~Teaspoon() {}
 };

 Teaspoon::Teaspoon(QObject *parent)
     : MeshObject(loadBezier(QLatin1String(":/teaspoon.txt")), parent)
 {
 }

 class TeaService : public QObject
 {
     Q_OBJECT
 public:
     TeaService(QObject *parent=0);
     ~TeaService();

     SceneObject *service;

     Teapot *teapot;
     Teacup *teacup1;
     Teacup *teacup2;
     Teaspoon *teaspoon1;
     Teaspoon *teaspoon2;
     PerPixelEffect *lighting;

     void changeMaterials(bool perPixel);

 signals:
     void changed();

 private slots:
     void teapotClicked();
     void teacup1Clicked();
     void teacup2Clicked();
     void teaspoon1Clicked();
     void teaspoon2Clicked();

 private:
     QGLMaterial *china;
     QGLMaterial *chinaHighlight;
     QGLMaterial *metal;
     QGLMaterial *metalHighlight;
 };

 TeaService::TeaService(QObject *parent)
     : QObject(parent)
 {
     china = new QGLMaterial(this);
     china->setAmbientColor(QColor(192, 150, 128));
     china->setSpecularColor(QColor(60, 60, 60));
     china->setShininess(128);

     chinaHighlight = new QGLMaterial(this);
     chinaHighlight->setAmbientColor(QColor(255, 192, 0));
     chinaHighlight->setSpecularColor(QColor(60, 60, 0));
     chinaHighlight->setShininess(128);

     metal = new QGLMaterial(this);
     metal->setAmbientColor(QColor(255, 255, 255));
     metal->setDiffuseColor(QColor(150, 150, 150));
     metal->setSpecularColor(QColor(255, 255, 255));
     metal->setShininess(128);

     metalHighlight = new QGLMaterial(this);
     metalHighlight->setAmbientColor(QColor(255, 255, 96));
     metalHighlight->setDiffuseColor(QColor(150, 150, 96));
     metalHighlight->setSpecularColor(QColor(255, 255, 255));
     metalHighlight->setShininess(128);

     service = new SceneObject(this);
     teapot = new Teapot(service);
     teacup1 = new Teacup(service);
     teacup2 = new Teacup(service);
     teacup1->setPosition(QVector3D(-2.3f, -0.75f, 0.0f));
     teacup2->setRotationAngle(180);
     teacup2->setRotationVector(QVector3D(0, 1, 0));
     teacup2->setPosition(QVector3D(2.3f, -0.75f, 0.0f));
     teaspoon1 = new Teaspoon(service);
     teaspoon2 = new Teaspoon(service);
     teaspoon1->setRotationAngle(275);
     teaspoon1->setRotationVector(QVector3D(1, 0, 0));
     teaspoon1->setPosition(QVector3D(-1.7f, -0.58f, 0.0f));
     teaspoon2->setRotationAngle(275);
     teaspoon2->setRotationVector(QVector3D(1, 0, 0));
     teaspoon2->setPosition(QVector3D(1.7f, -0.58f, 0.0f));

     teapot->setObjectId(ObjTeapot);
     teacup1->setObjectId(ObjTeacup1);
     teacup2->setObjectId(ObjTeacup2);
     teaspoon1->setObjectId(ObjTeaspoon1);
     teaspoon2->setObjectId(ObjTeaspoon2);

     lighting = new PerPixelEffect();
     changeMaterials(false);

     connect(teapot, SIGNAL(hoverChanged()), this, SIGNAL(changed()));
     connect(teacup1, SIGNAL(hoverChanged()), this, SIGNAL(changed()));
     connect(teacup2, SIGNAL(hoverChanged()), this, SIGNAL(changed()));
     connect(teaspoon1, SIGNAL(hoverChanged()), this, SIGNAL(changed()));
     connect(teaspoon2, SIGNAL(hoverChanged()), this, SIGNAL(changed()));

     connect(teapot, SIGNAL(clicked()), this, SLOT(teapotClicked()));
     connect(teacup1, SIGNAL(clicked()), this, SLOT(teacup1Clicked()));
     connect(teacup2, SIGNAL(clicked()), this, SLOT(teacup2Clicked()));
     connect(teaspoon1, SIGNAL(clicked()), this, SLOT(teaspoon1Clicked()));
     connect(teaspoon2, SIGNAL(clicked()), this, SLOT(teaspoon2Clicked()));
 }

 TeaService::~TeaService()
 {
     delete lighting;
 }

 void TeaService::changeMaterials(bool perPixel)
 {
     teapot->setMaterial(china);
     teapot->setHoverMaterial(chinaHighlight);
     teacup1->setMaterial(china);
     teacup1->setHoverMaterial(chinaHighlight);
     teacup2->setMaterial(china);
     teacup2->setHoverMaterial(chinaHighlight);
     if (perPixel) {
         teapot->setEffect(lighting);
         teacup1->setEffect(lighting);
         teacup2->setEffect(lighting);
     } else
     {
         teapot->setEffect(0);
         teacup1->setEffect(0);
         teacup2->setEffect(0);
     }

     teaspoon1->setMaterial(metal);
     teaspoon1->setHoverMaterial(metalHighlight);
     teaspoon2->setMaterial(metal);
     teaspoon2->setHoverMaterial(metalHighlight);
     if (perPixel) {
         teaspoon1->setEffect(lighting);
         teaspoon2->setEffect(lighting);
     } else
     {
         teaspoon1->setEffect(0);
         teaspoon2->setEffect(0);
     }
 }

 void TeaService::teapotClicked()
 {
     qDebug("teapot clicked");
 }

 void TeaService::teacup1Clicked()
 {
     qDebug("teacup1 clicked");
 }

 void TeaService::teacup2Clicked()
 {
     qDebug("teacup2 clicked");
 }

 void TeaService::teaspoon1Clicked()
 {
     qDebug("teaspoon1 clicked");
 }

 void TeaService::teaspoon2Clicked()
 {
     qDebug("teaspoon2 clicked");
 }

 class TeaServiceView : public QGLView
 {
     Q_OBJECT
 public:
     TeaServiceView(QWindow *parent=0);

 public slots:
     void standardLighting();
     void perPixelLighting();

 protected:
     void initializeGL(QGLPainter *painter);
     void paintGL(QGLPainter *painter);
     void keyPressEvent(QKeyEvent *e);

 private:
     TeaService *teaService;
 };

 TeaServiceView::TeaServiceView(QWindow *parent)
     : QGLView(parent)
 {
     teaService = new TeaService(this);

     setOption(QGLView::ObjectPicking, true);

     connect(teaService, SIGNAL(changed()), this, SLOT(update()));
 }

 void TeaServiceView::initializeGL(QGLPainter *painter)
 {
     teaService->service->initialize(this, painter);
 }

 void TeaServiceView::paintGL(QGLPainter *painter)
 {
     teaService->service->draw(painter);
 }

 void TeaServiceView::standardLighting()
 {
     teaService->changeMaterials(false);
     update();
 }

 void TeaServiceView::perPixelLighting()
 {
     teaService->changeMaterials(true);
     update();
 }

 void TeaServiceView::keyPressEvent(QKeyEvent *e)
 {
     if (e->key() == Qt::Key_Tab) {
         // The Tab key turns the ShowPicking option on and off,
         // which helps show what the pick buffer looks like.
         setOption(QGLView::ShowPicking, ((options() & QGLView::ShowPicking) == 0));
         update();
     }
     QGLView::keyPressEvent(e);
 }

 int main(int argc, char *argv[])
 {
     QGuiApplication app(argc, argv);

     TeaServiceView view;
     QStringList args = QGuiApplication::arguments();
     int w_pos = args.indexOf("-width");
     int h_pos = args.indexOf("-height");
     if (w_pos >= 0 && h_pos >= 0)
     {
         bool ok = true;
         int w = args.at(w_pos + 1).toInt(&ok);
         if (!ok)
         {
             qWarning() << "Could not parse width argument:" << args;
             return 1;
         }
         int h = args.at(h_pos + 1).toInt(&ok);
         if (!ok)
         {
             qWarning() << "Could not parse height argument:" << args;
             return 1;
         }
         view.resize(w, h);
     }
     else
     {
         view.resize(800, 600);
     }
     view.show();

     // TODO: QWindow has no setFocus function
     // view.setFocus();

     view.camera()->setEye(QVector3D(0, 3, 10));

     if (args.contains("-per-pixel-lighting"))
     {
         QTimer::singleShot(0, &view, SLOT(perPixelLighting()));
     }

     view.show();

     return app.exec();
 }

 #include "teaservice.moc"