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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd and its Subsidiary(-ies) nor the
** names of its contributors may be used to endorse or promote products
** derived from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef GLWIDGET_H
#define GLWIDGET_H
#include <QOpenGLWidget>
#include <QOpenGLFunctions>
#include <QOpenGLShaderProgram>
#include <QOpenGLBuffer>
#include <QVector3D>
#include <QMatrix4x4>
#include <QThread>
#include <QMutex>
#include <QWaitCondition>
#include <QElapsedTimer>
class GLWidget;
class Renderer : public QObject, protected QOpenGLFunctions
{
Q_OBJECT
public:
Renderer(GLWidget *w);
void lockRenderer() { m_renderMutex.lock(); }
void unlockRenderer() { m_renderMutex.unlock(); }
QMutex *grabMutex() { return &m_grabMutex; }
QWaitCondition *grabCond() { return &m_grabCond; }
void prepareExit() { m_exiting = true; m_grabCond.wakeAll(); }
signals:
void contextWanted();
public slots:
void render();
private:
void paintQtLogo();
void createGeometry();
void quad(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, qreal x4, qreal y4);
void extrude(qreal x1, qreal y1, qreal x2, qreal y2);
bool m_inited;
qreal m_fAngle;
qreal m_fScale;
QVector<QVector3D> vertices;
QVector<QVector3D> normals;
QOpenGLShaderProgram program;
QOpenGLBuffer vbo;
int vertexAttr;
int normalAttr;
int matrixUniform;
GLWidget *m_glwidget;
QMutex m_renderMutex;
QElapsedTimer m_elapsed;
QMutex m_grabMutex;
QWaitCondition m_grabCond;
bool m_exiting;
};
class GLWidget : public QOpenGLWidget
{
Q_OBJECT
public:
explicit GLWidget(QWidget *parent = 0);
~GLWidget();
protected:
void paintEvent(QPaintEvent *) Q_DECL_OVERRIDE { }
signals:
void renderRequested();
public slots:
void grabContext();
private slots:
void onAboutToCompose();
void onFrameSwapped();
void onAboutToResize();
void onResized();
private:
QThread *m_thread;
Renderer *m_renderer;
};
#endif
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