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<h1 class="title">glwidget.cpp Example File</h1>
<span class="small-subtitle">opengl/hellogl_es/glwidget.cpp</span>
<!-- $$$opengl/hellogl_es/glwidget.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp"> <span class="comment">/****************************************************************************
**
** 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.
**
**
** 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."
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include "glwidget.h"</span>
<span class="preprocessor">#include <QPainter></span>
<span class="preprocessor">#include <math.h></span>
<span class="preprocessor">#include "bubble.h"</span>
<span class="keyword">const</span> <span class="type">int</span> bubbleNum <span class="operator">=</span> <span class="number">8</span>;
<span class="keyword">inline</span> <span class="type">void</span> CrossProduct(<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> <span class="operator">&</span>xOut<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> <span class="operator">&</span>yOut<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> <span class="operator">&</span>zOut<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> x1<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> y1<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> z1<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> x2<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> y2<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> z2)
{
xOut <span class="operator">=</span> y1 <span class="operator">*</span> z2 <span class="operator">-</span> z1 <span class="operator">*</span> y2;
yOut <span class="operator">=</span> z1 <span class="operator">*</span> x2 <span class="operator">-</span> x1 <span class="operator">*</span> z2;
zOut <span class="operator">=</span> x1 <span class="operator">*</span> y2 <span class="operator">-</span> y1 <span class="operator">*</span> x2;
}
<span class="keyword">inline</span> <span class="type">void</span> Normalize(<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> <span class="operator">&</span>x<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> <span class="operator">&</span>y<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> <span class="operator">&</span>z)
{
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> l <span class="operator">=</span> sqrt(x<span class="operator">*</span>x <span class="operator">+</span> y<span class="operator">*</span>y <span class="operator">+</span> z<span class="operator">*</span>z);
x <span class="operator">=</span> x <span class="operator">/</span> l;
y <span class="operator">=</span> y <span class="operator">/</span> l;
z <span class="operator">=</span> z <span class="operator">/</span> l;
}
GLWidget<span class="operator">::</span>GLWidget(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent)
: <span class="type"><a href="qglwidget.html">QGLWidget</a></span>(parent)
{
qtLogo <span class="operator">=</span> <span class="keyword">true</span>;
createdVertices <span class="operator">=</span> <span class="number">0</span>;
createdNormals <span class="operator">=</span> <span class="number">0</span>;
m_vertexNumber <span class="operator">=</span> <span class="number">0</span>;
frames <span class="operator">=</span> <span class="number">0</span>;
setAttribute(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>WA_PaintOnScreen);
setAttribute(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>WA_NoSystemBackground);
setAutoBufferSwap(<span class="keyword">false</span>);
m_showBubbles <span class="operator">=</span> <span class="keyword">true</span>;
}
GLWidget<span class="operator">::</span><span class="operator">~</span>GLWidget()
{
<span class="keyword">if</span> (createdVertices)
<span class="keyword">delete</span><span class="operator">[</span><span class="operator">]</span> createdVertices;
<span class="keyword">if</span> (createdNormals)
<span class="keyword">delete</span><span class="operator">[</span><span class="operator">]</span> createdNormals;
}
<span class="type">void</span> GLWidget<span class="operator">::</span>setScaling(<span class="type">int</span> scale) {
<span class="keyword">if</span> (scale <span class="operator">></span> <span class="number">50</span>)
m_fScale <span class="operator">=</span> <span class="number">1</span> <span class="operator">+</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span>(scale <span class="operator">-</span><span class="number">50</span>) <span class="operator">/</span> <span class="number">50</span> <span class="operator">*</span> <span class="number">0.5</span>;
<span class="keyword">else</span> <span class="keyword">if</span> (scale <span class="operator"><</span> <span class="number">50</span>)
m_fScale <span class="operator">=</span> <span class="number">1</span><span class="operator">-</span> (<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span>(<span class="number">50</span> <span class="operator">-</span> scale) <span class="operator">/</span> <span class="number">50</span> <span class="operator">*</span> <span class="number">1</span><span class="operator">/</span><span class="number">2</span>);
<span class="keyword">else</span>
m_fScale <span class="operator">=</span> <span class="number">1</span>;
}
<span class="type">void</span> GLWidget<span class="operator">::</span>setLogo() {
qtLogo <span class="operator">=</span> <span class="keyword">true</span>;
}
<span class="type">void</span> GLWidget<span class="operator">::</span>setTexture() {
qtLogo <span class="operator">=</span> <span class="keyword">false</span>;
}
<span class="type">void</span> GLWidget<span class="operator">::</span>showBubbles(<span class="type">bool</span> bubbles)
{
m_showBubbles <span class="operator">=</span> bubbles;
}
<span class="type">void</span> GLWidget<span class="operator">::</span>paintQtLogo()
{
glDisable(GL_TEXTURE_2D);
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(<span class="number">3</span><span class="operator">,</span>GL_FLOAT<span class="operator">,</span><span class="number">0</span><span class="operator">,</span> createdVertices);
glEnableClientState(GL_NORMAL_ARRAY);
glNormalPointer(GL_FLOAT<span class="operator">,</span><span class="number">0</span><span class="operator">,</span>createdNormals);
glDrawArrays(GL_TRIANGLES<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> m_vertexNumber <span class="operator">/</span> <span class="number">3</span>);
}
<span class="type">void</span> GLWidget<span class="operator">::</span>paintTexturedCube()
{
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D<span class="operator">,</span> m_uiTexture);
GLfloat afVertices<span class="operator">[</span><span class="operator">]</span> <span class="operator">=</span> {
<span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span><span class="number">0.5</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span><span class="number">0.5</span><span class="operator">,</span>
<span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span><span class="number">0.5</span><span class="operator">,</span><span class="number">0.5</span><span class="operator">,</span><span class="number">0.5</span><span class="operator">,</span><span class="number">0.5</span><span class="operator">,</span><span class="number">0.5</span><span class="operator">,</span>
<span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span><span class="number">0.5</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span>
<span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span><span class="number">0.5</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span><span class="number">0.5</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span>
<span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span><span class="number">0.5</span><span class="operator">,</span><span class="number">0.5</span><span class="operator">,</span><span class="number">0.5</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span>
<span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span><span class="number">0.5</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span><span class="number">0.5</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span><span class="number">0.5</span><span class="operator">,</span>
<span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span><span class="number">0.5</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span>
<span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span><span class="number">0.5</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span><span class="number">0.5</span><span class="operator">,</span><span class="number">0.5</span><span class="operator">,</span>
<span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span>
<span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span>
<span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span>
<span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="number">0.5</span>
};
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(<span class="number">3</span><span class="operator">,</span>GL_FLOAT<span class="operator">,</span><span class="number">0</span><span class="operator">,</span>afVertices);
GLfloat afTexCoord<span class="operator">[</span><span class="operator">]</span> <span class="operator">=</span> {
<span class="number">0.0f</span><span class="operator">,</span><span class="number">0.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span><span class="number">1.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span><span class="number">0.0f</span><span class="operator">,</span>
<span class="number">1.0f</span><span class="operator">,</span><span class="number">1.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span><span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span><span class="number">1.0f</span><span class="operator">,</span>
<span class="number">1.0f</span><span class="operator">,</span><span class="number">1.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span><span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span><span class="number">1.0f</span><span class="operator">,</span>
<span class="number">0.0f</span><span class="operator">,</span><span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span><span class="number">1.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span><span class="number">0.0f</span><span class="operator">,</span>
<span class="number">1.0f</span><span class="operator">,</span><span class="number">1.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span><span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span><span class="number">1.0f</span><span class="operator">,</span>
<span class="number">0.0f</span><span class="operator">,</span><span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span><span class="number">1.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span><span class="number">0.0f</span><span class="operator">,</span>
<span class="number">0.0f</span><span class="operator">,</span><span class="number">0.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span><span class="number">1.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span><span class="number">0.0f</span><span class="operator">,</span>
<span class="number">1.0f</span><span class="operator">,</span><span class="number">1.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span><span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span><span class="number">1.0f</span><span class="operator">,</span>
<span class="number">0.0f</span><span class="operator">,</span><span class="number">1.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span><span class="number">0.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span><span class="number">1.0f</span><span class="operator">,</span>
<span class="number">1.0f</span><span class="operator">,</span><span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span><span class="number">1.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span><span class="number">0.0f</span><span class="operator">,</span>
<span class="number">1.0f</span><span class="operator">,</span><span class="number">0.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span><span class="number">1.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span><span class="number">0.0f</span><span class="operator">,</span>
<span class="number">0.0f</span><span class="operator">,</span><span class="number">1.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span><span class="number">0.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span><span class="number">1.0f</span>
};
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(<span class="number">2</span><span class="operator">,</span>GL_FLOAT<span class="operator">,</span><span class="number">0</span><span class="operator">,</span>afTexCoord);
GLfloat afNormals<span class="operator">[</span><span class="operator">]</span> <span class="operator">=</span> {
<span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="operator">-</span><span class="number">1</span><span class="operator">,</span>
<span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="operator">-</span><span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="operator">-</span><span class="number">1</span><span class="operator">,</span>
<span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="number">1</span><span class="operator">,</span>
<span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="number">1</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="number">1</span><span class="operator">,</span>
<span class="operator">-</span><span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span>
<span class="operator">-</span><span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span>
<span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span>
<span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span>
<span class="number">0</span><span class="operator">,</span><span class="operator">-</span><span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span><span class="operator">-</span><span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span><span class="operator">-</span><span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span>
<span class="number">0</span><span class="operator">,</span><span class="operator">-</span><span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span><span class="operator">-</span><span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span><span class="operator">-</span><span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span>
<span class="number">0</span><span class="operator">,</span><span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span><span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span><span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span>
<span class="number">0</span><span class="operator">,</span><span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span><span class="number">1</span><span class="operator">,</span><span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span><span class="number">1</span><span class="operator">,</span><span class="number">0</span>
};
glEnableClientState(GL_NORMAL_ARRAY);
glNormalPointer(GL_FLOAT<span class="operator">,</span><span class="number">0</span><span class="operator">,</span>afNormals);
glDrawArrays(GL_TRIANGLES<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">36</span>);
}
<span class="type">void</span> GLWidget<span class="operator">::</span>initializeGL ()
{
glClearColor(<span class="number">0.1f</span><span class="operator">,</span> <span class="number">0.1f</span><span class="operator">,</span> <span class="number">0.2f</span><span class="operator">,</span> <span class="number">1.0f</span>);
glEnable(GL_TEXTURE_2D);
glGenTextures(<span class="number">1</span><span class="operator">,</span> <span class="operator">&</span>m_uiTexture);
m_uiTexture <span class="operator">=</span> bindTexture(<span class="type"><a href="qimage.html">QImage</a></span>(<span class="string">":/qt.png"</span>));
glTexParameterf(GL_TEXTURE_2D<span class="operator">,</span> GL_TEXTURE_MIN_FILTER<span class="operator">,</span> GL_LINEAR );
glTexParameterf(GL_TEXTURE_2D<span class="operator">,</span> GL_TEXTURE_MAG_FILTER<span class="operator">,</span> GL_LINEAR );
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
GLfloat aLightPosition<span class="operator">[</span><span class="operator">]</span> <span class="operator">=</span> {<span class="number">0.0f</span><span class="operator">,</span><span class="number">0.3f</span><span class="operator">,</span><span class="number">1.0f</span><span class="operator">,</span><span class="number">0.0f</span>};
glLightfv(GL_LIGHT0<span class="operator">,</span> GL_SPOT_DIRECTION<span class="operator">,</span> aLightPosition);
m_fAngle <span class="operator">=</span> <span class="number">0</span>;
m_fScale <span class="operator">=</span> <span class="number">1</span>;
createGeometry();
createBubbles(bubbleNum <span class="operator">-</span> bubbles<span class="operator">.</span>count());
}
<span class="type">void</span> GLWidget<span class="operator">::</span>paintGL()
{
createBubbles(bubbleNum <span class="operator">-</span> bubbles<span class="operator">.</span>count());
<span class="type"><a href="qpainter.html">QPainter</a></span> painter;
painter<span class="operator">.</span>begin(<span class="keyword">this</span>);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glMatrixMode(GL_TEXTURE);
glPushMatrix();
<span class="comment">//Since OpenGL ES does not support glPush/PopAttrib(GL_ALL_ATTRIB_BITS)</span>
<span class="comment">//we have to take care of the states ourselves</span>
glClearColor(<span class="number">0.1f</span><span class="operator">,</span> <span class="number">0.1f</span><span class="operator">,</span> <span class="number">0.2f</span><span class="operator">,</span> <span class="number">1.0f</span>);
glClear(GL_COLOR_BUFFER_BIT <span class="operator">|</span> GL_DEPTH_BUFFER_BIT);
glEnable(GL_TEXTURE_2D);
glTexParameterf(GL_TEXTURE_2D<span class="operator">,</span> GL_TEXTURE_MIN_FILTER<span class="operator">,</span> GL_LINEAR );
glTexParameterf(GL_TEXTURE_2D<span class="operator">,</span> GL_TEXTURE_MAG_FILTER<span class="operator">,</span> GL_LINEAR );
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glShadeModel(GL_FLAT);
glFrontFace(GL_CW);
glCullFace(GL_FRONT);
glEnable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glRotatef(m_fAngle<span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">0.0f</span>);
glRotatef(m_fAngle<span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span>);
glRotatef(m_fAngle<span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">1.0f</span>);
glScalef(m_fScale<span class="operator">,</span> m_fScale<span class="operator">,</span>m_fScale);
glTranslatef(<span class="number">0.0f</span><span class="operator">,</span><span class="operator">-</span><span class="number">0.2f</span><span class="operator">,</span><span class="number">0.0f</span>);
GLfloat matDiff<span class="operator">[</span><span class="operator">]</span> <span class="operator">=</span> {<span class="number">0.40f</span><span class="operator">,</span> <span class="number">1.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">1.0f</span>};
glMaterialfv(GL_FRONT_AND_BACK<span class="operator">,</span> GL_DIFFUSE<span class="operator">,</span> matDiff);
<span class="keyword">if</span> (qtLogo)
paintQtLogo();
<span class="keyword">else</span>
paintTexturedCube();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_TEXTURE);
glPopMatrix();
glDisable(GL_LIGHTING);
glDisable(GL_LIGHT0);
glDisable(GL_DEPTH_TEST);
glDisable(GL_CULL_FACE);
<span class="keyword">if</span> (m_showBubbles)
foreach (Bubble <span class="operator">*</span>bubble<span class="operator">,</span> bubbles) {
bubble<span class="operator">-</span><span class="operator">></span>drawBubble(<span class="operator">&</span>painter);
}
<span class="type"><a href="qstring.html">QString</a></span> framesPerSecond;
framesPerSecond<span class="operator">.</span>setNum(frames <span class="operator">/</span>(time<span class="operator">.</span>elapsed() <span class="operator">/</span> <span class="number">1000.0</span>)<span class="operator">,</span> <span class="char">'f'</span><span class="operator">,</span> <span class="number">2</span>);
painter<span class="operator">.</span>setPen(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>white);
painter<span class="operator">.</span>drawText(<span class="number">20</span><span class="operator">,</span> <span class="number">40</span><span class="operator">,</span> framesPerSecond <span class="operator">+</span> <span class="string">" fps"</span>);
painter<span class="operator">.</span>end();
swapBuffers();
<span class="type"><a href="qmutablelistiterator.html">QMutableListIterator</a></span><span class="operator"><</span>Bubble<span class="operator">*</span><span class="operator">></span> iter(bubbles);
<span class="keyword">while</span> (iter<span class="operator">.</span>hasNext()) {
Bubble <span class="operator">*</span>bubble <span class="operator">=</span> iter<span class="operator">.</span>next();
bubble<span class="operator">-</span><span class="operator">></span>move(rect());
}
<span class="keyword">if</span> (<span class="operator">!</span>(frames <span class="operator">%</span> <span class="number">100</span>)) {
time<span class="operator">.</span>start();
frames <span class="operator">=</span> <span class="number">0</span>;
}
m_fAngle <span class="operator">+</span><span class="operator">=</span> <span class="number">1.0f</span>;
frames <span class="operator">+</span><span class="operator">+</span>;
}
<span class="type">void</span> GLWidget<span class="operator">::</span>createBubbles(<span class="type">int</span> number)
{
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> number; <span class="operator">+</span><span class="operator">+</span>i) {
<span class="type"><a href="qpointf.html">QPointF</a></span> position(width()<span class="operator">*</span>(<span class="number">0.1</span> <span class="operator">+</span> (<span class="number">0.8</span><span class="operator">*</span>qrand()<span class="operator">/</span>(RAND_MAX<span class="operator">+</span><span class="number">1.0</span>)))<span class="operator">,</span>
height()<span class="operator">*</span>(<span class="number">0.1</span> <span class="operator">+</span> (<span class="number">0.8</span><span class="operator">*</span>qrand()<span class="operator">/</span>(RAND_MAX<span class="operator">+</span><span class="number">1.0</span>))));
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> radius <span class="operator">=</span> <a href="qtglobal.html#qMin">qMin</a>(width()<span class="operator">,</span> height())<span class="operator">*</span>(<span class="number">0.0175</span> <span class="operator">+</span> <span class="number">0.0875</span><span class="operator">*</span>qrand()<span class="operator">/</span>(RAND_MAX<span class="operator">+</span><span class="number">1.0</span>));
<span class="type"><a href="qpointf.html">QPointF</a></span> velocity(width()<span class="operator">*</span><span class="number">0.0175</span><span class="operator">*</span>(<span class="operator">-</span><span class="number">0.5</span> <span class="operator">+</span> qrand()<span class="operator">/</span>(RAND_MAX<span class="operator">+</span><span class="number">1.0</span>))<span class="operator">,</span>
height()<span class="operator">*</span><span class="number">0.0175</span><span class="operator">*</span>(<span class="operator">-</span><span class="number">0.5</span> <span class="operator">+</span> qrand()<span class="operator">/</span>(RAND_MAX<span class="operator">+</span><span class="number">1.0</span>)));
bubbles<span class="operator">.</span>append(<span class="keyword">new</span> Bubble(position<span class="operator">,</span> radius<span class="operator">,</span> velocity));
}
}
<span class="type">void</span> GLWidget<span class="operator">::</span>createGeometry()
{
vertices<span class="operator">.</span>clear();
normals<span class="operator">.</span>clear();
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> x1 <span class="operator">=</span> <span class="operator">+</span><span class="number">0.06f</span>;
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> y1 <span class="operator">=</span> <span class="operator">-</span><span class="number">0.14f</span>;
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> x2 <span class="operator">=</span> <span class="operator">+</span><span class="number">0.14f</span>;
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> y2 <span class="operator">=</span> <span class="operator">-</span><span class="number">0.06f</span>;
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> x3 <span class="operator">=</span> <span class="operator">+</span><span class="number">0.08f</span>;
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> y3 <span class="operator">=</span> <span class="operator">+</span><span class="number">0.00f</span>;
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> x4 <span class="operator">=</span> <span class="operator">+</span><span class="number">0.30f</span>;
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> y4 <span class="operator">=</span> <span class="operator">+</span><span class="number">0.22f</span>;
quad(x1<span class="operator">,</span> y1<span class="operator">,</span> x2<span class="operator">,</span> y2<span class="operator">,</span> y2<span class="operator">,</span> x2<span class="operator">,</span> y1<span class="operator">,</span> x1);
quad(x3<span class="operator">,</span> y3<span class="operator">,</span> x4<span class="operator">,</span> y4<span class="operator">,</span> y4<span class="operator">,</span> x4<span class="operator">,</span> y3<span class="operator">,</span> x3);
extrude(x1<span class="operator">,</span> y1<span class="operator">,</span> x2<span class="operator">,</span> y2);
extrude(x2<span class="operator">,</span> y2<span class="operator">,</span> y2<span class="operator">,</span> x2);
extrude(y2<span class="operator">,</span> x2<span class="operator">,</span> y1<span class="operator">,</span> x1);
extrude(y1<span class="operator">,</span> x1<span class="operator">,</span> x1<span class="operator">,</span> y1);
extrude(x3<span class="operator">,</span> y3<span class="operator">,</span> x4<span class="operator">,</span> y4);
extrude(x4<span class="operator">,</span> y4<span class="operator">,</span> y4<span class="operator">,</span> x4);
extrude(y4<span class="operator">,</span> x4<span class="operator">,</span> y3<span class="operator">,</span> x3);
<span class="keyword">const</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> Pi <span class="operator">=</span> <span class="number">3.14159f</span>;
<span class="keyword">const</span> <span class="type">int</span> NumSectors <span class="operator">=</span> <span class="number">100</span>;
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> NumSectors; <span class="operator">+</span><span class="operator">+</span>i) {
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> angle1 <span class="operator">=</span> (i <span class="operator">*</span> <span class="number">2</span> <span class="operator">*</span> Pi) <span class="operator">/</span> NumSectors;
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> x5 <span class="operator">=</span> <span class="number">0.30</span> <span class="operator">*</span> sin(angle1);
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> y5 <span class="operator">=</span> <span class="number">0.30</span> <span class="operator">*</span> cos(angle1);
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> x6 <span class="operator">=</span> <span class="number">0.20</span> <span class="operator">*</span> sin(angle1);
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> y6 <span class="operator">=</span> <span class="number">0.20</span> <span class="operator">*</span> cos(angle1);
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> angle2 <span class="operator">=</span> ((i <span class="operator">+</span> <span class="number">1</span>) <span class="operator">*</span> <span class="number">2</span> <span class="operator">*</span> Pi) <span class="operator">/</span> NumSectors;
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> x7 <span class="operator">=</span> <span class="number">0.20</span> <span class="operator">*</span> sin(angle2);
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> y7 <span class="operator">=</span> <span class="number">0.20</span> <span class="operator">*</span> cos(angle2);
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> x8 <span class="operator">=</span> <span class="number">0.30</span> <span class="operator">*</span> sin(angle2);
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> y8 <span class="operator">=</span> <span class="number">0.30</span> <span class="operator">*</span> cos(angle2);
quad(x5<span class="operator">,</span> y5<span class="operator">,</span> x6<span class="operator">,</span> y6<span class="operator">,</span> x7<span class="operator">,</span> y7<span class="operator">,</span> x8<span class="operator">,</span> y8);
extrude(x6<span class="operator">,</span> y6<span class="operator">,</span> x7<span class="operator">,</span> y7);
extrude(x8<span class="operator">,</span> y8<span class="operator">,</span> x5<span class="operator">,</span> y5);
}
m_vertexNumber <span class="operator">=</span> vertices<span class="operator">.</span>size();
createdVertices <span class="operator">=</span> <span class="keyword">new</span> GLfloat<span class="operator">[</span>m_vertexNumber<span class="operator">]</span>;
createdNormals <span class="operator">=</span> <span class="keyword">new</span> GLfloat<span class="operator">[</span>m_vertexNumber<span class="operator">]</span>;
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>;i <span class="operator"><</span> m_vertexNumber;i<span class="operator">+</span><span class="operator">+</span>) {
createdVertices<span class="operator">[</span>i<span class="operator">]</span> <span class="operator">=</span> vertices<span class="operator">.</span>at(i) <span class="operator">*</span> <span class="number">2</span>;
createdNormals<span class="operator">[</span>i<span class="operator">]</span> <span class="operator">=</span> normals<span class="operator">.</span>at(i);
}
vertices<span class="operator">.</span>clear();
normals<span class="operator">.</span>clear();
}
<span class="type">void</span> GLWidget<span class="operator">::</span>quad(<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> x1<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> y1<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> x2<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> y2<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> x3<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> y3<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> x4<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> y4)
{
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> nx<span class="operator">,</span> ny<span class="operator">,</span> nz;
vertices <span class="operator"><</span><span class="operator"><</span> x1 <span class="operator"><</span><span class="operator"><</span> y1 <span class="operator"><</span><span class="operator"><</span> <span class="operator">-</span><span class="number">0.05f</span>;
vertices <span class="operator"><</span><span class="operator"><</span> x2 <span class="operator"><</span><span class="operator"><</span> y2 <span class="operator"><</span><span class="operator"><</span> <span class="operator">-</span><span class="number">0.05f</span>;
vertices <span class="operator"><</span><span class="operator"><</span> x4 <span class="operator"><</span><span class="operator"><</span> y4 <span class="operator"><</span><span class="operator"><</span> <span class="operator">-</span><span class="number">0.05f</span>;
vertices <span class="operator"><</span><span class="operator"><</span> x3 <span class="operator"><</span><span class="operator"><</span> y3 <span class="operator"><</span><span class="operator"><</span> <span class="operator">-</span><span class="number">0.05f</span>;
vertices <span class="operator"><</span><span class="operator"><</span> x4 <span class="operator"><</span><span class="operator"><</span> y4 <span class="operator"><</span><span class="operator"><</span> <span class="operator">-</span><span class="number">0.05f</span>;
vertices <span class="operator"><</span><span class="operator"><</span> x2 <span class="operator"><</span><span class="operator"><</span> y2 <span class="operator"><</span><span class="operator"><</span> <span class="operator">-</span><span class="number">0.05f</span>;
CrossProduct(nx<span class="operator">,</span> ny<span class="operator">,</span> nz<span class="operator">,</span> x2 <span class="operator">-</span> x1<span class="operator">,</span> y2 <span class="operator">-</span> y1<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> x4 <span class="operator">-</span> x1<span class="operator">,</span> y4 <span class="operator">-</span> y1<span class="operator">,</span> <span class="number">0</span>);
Normalize(nx<span class="operator">,</span> ny<span class="operator">,</span> nz);
normals <span class="operator"><</span><span class="operator"><</span> nx <span class="operator"><</span><span class="operator"><</span> ny <span class="operator"><</span><span class="operator"><</span> nz;
normals <span class="operator"><</span><span class="operator"><</span> nx <span class="operator"><</span><span class="operator"><</span> ny <span class="operator"><</span><span class="operator"><</span> nz;
normals <span class="operator"><</span><span class="operator"><</span> nx <span class="operator"><</span><span class="operator"><</span> ny <span class="operator"><</span><span class="operator"><</span> nz;
normals <span class="operator"><</span><span class="operator"><</span> nx <span class="operator"><</span><span class="operator"><</span> ny <span class="operator"><</span><span class="operator"><</span> nz;
normals <span class="operator"><</span><span class="operator"><</span> nx <span class="operator"><</span><span class="operator"><</span> ny <span class="operator"><</span><span class="operator"><</span> nz;
normals <span class="operator"><</span><span class="operator"><</span> nx <span class="operator"><</span><span class="operator"><</span> ny <span class="operator"><</span><span class="operator"><</span> nz;
vertices <span class="operator"><</span><span class="operator"><</span> x4 <span class="operator"><</span><span class="operator"><</span> y4 <span class="operator"><</span><span class="operator"><</span> <span class="number">0.05f</span>;
vertices <span class="operator"><</span><span class="operator"><</span> x2 <span class="operator"><</span><span class="operator"><</span> y2 <span class="operator"><</span><span class="operator"><</span> <span class="number">0.05f</span>;
vertices <span class="operator"><</span><span class="operator"><</span> x1 <span class="operator"><</span><span class="operator"><</span> y1 <span class="operator"><</span><span class="operator"><</span> <span class="number">0.05f</span>;
vertices <span class="operator"><</span><span class="operator"><</span> x2 <span class="operator"><</span><span class="operator"><</span> y2 <span class="operator"><</span><span class="operator"><</span> <span class="number">0.05f</span>;
vertices <span class="operator"><</span><span class="operator"><</span> x4 <span class="operator"><</span><span class="operator"><</span> y4 <span class="operator"><</span><span class="operator"><</span> <span class="number">0.05f</span>;
vertices <span class="operator"><</span><span class="operator"><</span> x3 <span class="operator"><</span><span class="operator"><</span> y3 <span class="operator"><</span><span class="operator"><</span> <span class="number">0.05f</span>;
CrossProduct(nx<span class="operator">,</span> ny<span class="operator">,</span> nz<span class="operator">,</span> x2 <span class="operator">-</span> x4<span class="operator">,</span> y2 <span class="operator">-</span> y4<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> x1 <span class="operator">-</span> x4<span class="operator">,</span> y1 <span class="operator">-</span> y4<span class="operator">,</span> <span class="number">0</span>);
Normalize(nx<span class="operator">,</span> ny<span class="operator">,</span> nz);
normals <span class="operator"><</span><span class="operator"><</span> nx <span class="operator"><</span><span class="operator"><</span> ny <span class="operator"><</span><span class="operator"><</span> nz;
normals <span class="operator"><</span><span class="operator"><</span> nx <span class="operator"><</span><span class="operator"><</span> ny <span class="operator"><</span><span class="operator"><</span> nz;
normals <span class="operator"><</span><span class="operator"><</span> nx <span class="operator"><</span><span class="operator"><</span> ny <span class="operator"><</span><span class="operator"><</span> nz;
normals <span class="operator"><</span><span class="operator"><</span> nx <span class="operator"><</span><span class="operator"><</span> ny <span class="operator"><</span><span class="operator"><</span> nz;
normals <span class="operator"><</span><span class="operator"><</span> nx <span class="operator"><</span><span class="operator"><</span> ny <span class="operator"><</span><span class="operator"><</span> nz;
normals <span class="operator"><</span><span class="operator"><</span> nx <span class="operator"><</span><span class="operator"><</span> ny <span class="operator"><</span><span class="operator"><</span> nz;
}
<span class="type">void</span> GLWidget<span class="operator">::</span>extrude(<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> x1<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> y1<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> x2<span class="operator">,</span> <span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> y2)
{
<span class="type"><a href="qtglobal.html#qreal-typedef">qreal</a></span> nx<span class="operator">,</span> ny<span class="operator">,</span> nz;
vertices <span class="operator"><</span><span class="operator"><</span> x1 <span class="operator"><</span><span class="operator"><</span> y1 <span class="operator"><</span><span class="operator"><</span> <span class="operator">+</span><span class="number">0.05f</span>;
vertices <span class="operator"><</span><span class="operator"><</span> x2 <span class="operator"><</span><span class="operator"><</span> y2 <span class="operator"><</span><span class="operator"><</span> <span class="operator">+</span><span class="number">0.05f</span>;
vertices <span class="operator"><</span><span class="operator"><</span> x1 <span class="operator"><</span><span class="operator"><</span> y1 <span class="operator"><</span><span class="operator"><</span> <span class="operator">-</span><span class="number">0.05f</span>;
vertices <span class="operator"><</span><span class="operator"><</span> x2 <span class="operator"><</span><span class="operator"><</span> y2 <span class="operator"><</span><span class="operator"><</span> <span class="operator">-</span><span class="number">0.05f</span>;
vertices <span class="operator"><</span><span class="operator"><</span> x1 <span class="operator"><</span><span class="operator"><</span> y1 <span class="operator"><</span><span class="operator"><</span> <span class="operator">-</span><span class="number">0.05f</span>;
vertices <span class="operator"><</span><span class="operator"><</span> x2 <span class="operator"><</span><span class="operator"><</span> y2 <span class="operator"><</span><span class="operator"><</span> <span class="operator">+</span><span class="number">0.05f</span>;
CrossProduct(nx<span class="operator">,</span> ny<span class="operator">,</span> nz<span class="operator">,</span> x2 <span class="operator">-</span> x1<span class="operator">,</span> y2 <span class="operator">-</span> y1<span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="number">0.0f</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.1f</span>);
Normalize(nx<span class="operator">,</span> ny<span class="operator">,</span> nz);
normals <span class="operator"><</span><span class="operator"><</span> nx <span class="operator"><</span><span class="operator"><</span> ny <span class="operator"><</span><span class="operator"><</span> nz;
normals <span class="operator"><</span><span class="operator"><</span> nx <span class="operator"><</span><span class="operator"><</span> ny <span class="operator"><</span><span class="operator"><</span> nz;
normals <span class="operator"><</span><span class="operator"><</span> nx <span class="operator"><</span><span class="operator"><</span> ny <span class="operator"><</span><span class="operator"><</span> nz;
normals <span class="operator"><</span><span class="operator"><</span> nx <span class="operator"><</span><span class="operator"><</span> ny <span class="operator"><</span><span class="operator"><</span> nz;
normals <span class="operator"><</span><span class="operator"><</span> nx <span class="operator"><</span><span class="operator"><</span> ny <span class="operator"><</span><span class="operator"><</span> nz;
normals <span class="operator"><</span><span class="operator"><</span> nx <span class="operator"><</span><span class="operator"><</span> ny <span class="operator"><</span><span class="operator"><</span> nz;
}</pre>
</div>
<!-- @@@opengl/hellogl_es/glwidget.cpp -->
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