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diff --git a/examples/opengl/hellowindow/hellowindow.h b/examples/opengl/hellowindow/hellowindow.h
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-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the examples of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** BSD License Usage
-** Alternatively, 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 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."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include <QWindow>
-
-#include <QColor>
-#include <QMutex>
-#include <QOpenGLShaderProgram>
-#include <QOpenGLBuffer>
-#include <QSharedPointer>
-#include <QTimer>
-
-class HelloWindow;
-
-class Renderer : public QObject
-{
- Q_OBJECT
-
-public:
- explicit Renderer(const QSurfaceFormat &format, Renderer *share = nullptr,
- QScreen *screen = nullptr);
-
- QSurfaceFormat format() const { return m_format; }
-
-public slots:
- void render(HelloWindow *surface, qreal angle, const QColor &color);
-
-signals:
- void requestUpdate();
-
-private:
- void initialize();
-
- void createGeometry();
- void createBubbles(int number);
- 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);
-
- QList<QVector3D> vertices;
- QList<QVector3D> normals;
- int vertexAttr;
- int normalAttr;
- int matrixUniform;
- int colorUniform;
-
- bool m_initialized;
- QSurfaceFormat m_format;
- QOpenGLContext *m_context;
- QOpenGLShaderProgram *m_program;
- QOpenGLBuffer m_vbo;
- QColor m_backgroundColor;
-};
-
-class HelloWindow : public QWindow
-{
-public:
- explicit HelloWindow(const QSharedPointer<Renderer> &renderer, QScreen *screen = nullptr);
-
- QColor color() const;
- void updateColor();
-
-protected:
- bool event(QEvent *ev) override;
- void exposeEvent(QExposeEvent *event) override;
- void mousePressEvent(QMouseEvent *) override;
- void render();
-
-private:
- int m_colorIndex;
- QColor m_color;
- const QSharedPointer<Renderer> m_renderer;
-};