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c7b8fe9efd
osgEarth may block the main thread during network io, the rendering is moved to OsgEarthItemRenderer class, running in the bg thread. May require Qt 4.8.0+ to work correctly.
153 lines
4.0 KiB
C++
153 lines
4.0 KiB
C++
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef OSGEARTH_H
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#define OSGEARTH_H
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#include <osgViewer/Viewer>
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#include <QtDeclarative/QDeclarativeItem>
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#include <osgQt/GraphicsWindowQt>
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class QGLFramebufferObject;
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class QGLWidget;
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class OsgEarthItemRenderer;
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class OsgEarthItem : public QDeclarativeItem
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{
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Q_OBJECT
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Q_DISABLE_COPY(OsgEarthItem)
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Q_PROPERTY(QString sceneFile READ sceneFile WRITE setSceneFile NOTIFY sceneFileChanged)
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Q_PROPERTY(qreal fieldOfView READ fieldOfView WRITE setFieldOfView NOTIFY fieldOfViewChanged)
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Q_PROPERTY(qreal roll READ roll WRITE setRoll NOTIFY rollChanged)
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Q_PROPERTY(qreal pitch READ pitch WRITE setPitch NOTIFY pitchChanged)
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Q_PROPERTY(qreal yaw READ yaw WRITE setYaw NOTIFY yawChanged)
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Q_PROPERTY(double latitude READ latitude WRITE setLatitude NOTIFY latitudeChanged)
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Q_PROPERTY(double longitude READ longitude WRITE setLongitude NOTIFY longitudeChanged)
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Q_PROPERTY(double altitude READ altitude WRITE setAltitude NOTIFY altitudeChanged)
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public:
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OsgEarthItem(QDeclarativeItem *parent = 0);
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~OsgEarthItem();
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QString sceneFile() const { return m_sceneFile; }
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QString resolvedSceneFile() const;
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qreal fieldOfView() const { return m_fieldOfView; }
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qreal roll() const { return m_roll; }
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qreal pitch() const { return m_pitch; }
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qreal yaw() const { return m_yaw; }
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double latitude() const { return m_latitude; }
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double longitude() const { return m_longitude; }
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double altitude() const { return m_altitude; }
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protected:
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void geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry);
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void paint(QPainter *painter, const QStyleOptionGraphicsItem *style, QWidget *widget);
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public slots:
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void updateView();
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void setSceneFile(QString arg);
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void setFieldOfView(qreal arg);
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void setRoll(qreal arg);
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void setPitch(qreal arg);
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void setYaw(qreal arg);
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void setLatitude(double arg);
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void setLongitude(double arg);
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void setAltitude(double arg);
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signals:
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void rollChanged(qreal arg);
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void pitchChanged(qreal arg);
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void yawChanged(qreal arg);
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void latitudeChanged(double arg);
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void longitudeChanged(double arg);
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void altitudeChanged(double arg);
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void sceneFileChanged(QString arg);
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void fieldOfViewChanged(qreal arg);
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private slots:
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void updateFrame();
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private:
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OsgEarthItemRenderer *m_renderer;
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QThread *m_rendererThread;
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QSize m_currentSize;
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qreal m_roll;
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qreal m_pitch;
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qreal m_yaw;
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double m_latitude;
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double m_longitude;
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double m_altitude;
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qreal m_fieldOfView;
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QString m_sceneFile;
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};
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class OsgEarthItemRenderer : public QObject
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{
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Q_OBJECT
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public:
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OsgEarthItemRenderer(OsgEarthItem *item, QGLWidget *glWidget);
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~OsgEarthItemRenderer();
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QGLFramebufferObject *lastFrame();
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void markDirty() { m_cameraDirty = true; }
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public slots:
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void initScene();
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void updateFrame();
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signals:
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void frameReady();
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private slots:
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void updateFBO();
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private:
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enum { FboCount = 3 };
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OsgEarthItem *m_item;
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osg::ref_ptr<osgViewer::Viewer> m_viewer;
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osg::ref_ptr<osgViewer::GraphicsWindowEmbedded> m_gw;
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osg::ref_ptr<osg::Node> m_model;
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QWeakPointer<QGLWidget> m_glWidget;
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QGLFramebufferObject* m_fbo[FboCount];
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int m_lastFboNumber;
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QSize m_currentSize;
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bool m_cameraDirty;
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};
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QML_DECLARE_TYPE(OsgEarthItem)
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#endif // OSGEARTH_H
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