- Qt 5.5
- Qt OpenGL
- Hello GL2 Example
- logo.h Example File
- Qt 5.5.1 Reference Documentation

# logo.h Example File

hellogl2/logo.h

    /****************************************************************************
    **
    ** 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 nor the names of its
    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
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    **
    ** 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
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    ****************************************************************************/

    #ifndef LOGO_H
    #define LOGO_H

    #include <qopengl.h>
    #include <QVector>
    #include <QVector3D>

    class Logo
    {
    public:
        Logo();
        const GLfloat *constData() const { return m_data.constData(); }
        int count() const { return m_count; }
        int vertexCount() const { return m_count / 6; }

    private:
        void quad(GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2, GLfloat x3, GLfloat y3, GLfloat x4, GLfloat y4);
        void extrude(GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2);
        void add(const QVector3D &v, const QVector3D &n);

        QVector<GLfloat> m_data;
        int m_count;
    };

    #endif // LOGO_H