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<h1 class="title">roundedbox.cpp Example File</h1>
<span class="subtitle">graphicsview/boxes/roundedbox.cpp</span>
<!-- $$$graphicsview/boxes/roundedbox.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">
<span class="comment">/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the demonstration applications 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."
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include "roundedbox.h"</span>
<span class="comment">//============================================================================//</span>
<span class="comment">// P3T2N3Vertex //</span>
<span class="comment">//============================================================================//</span>
VertexDescription P3T2N3Vertex<span class="operator">::</span>description<span class="operator">[</span><span class="operator">]</span> <span class="operator">=</span> {
{VertexDescription<span class="operator">::</span>Position<span class="operator">,</span> GL_FLOAT<span class="operator">,</span> SIZE_OF_MEMBER(P3T2N3Vertex<span class="operator">,</span> position) <span class="operator">/</span> <span class="keyword">sizeof</span>(<span class="type">float</span>)<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span>}<span class="operator">,</span>
{VertexDescription<span class="operator">::</span>TexCoord<span class="operator">,</span> GL_FLOAT<span class="operator">,</span> SIZE_OF_MEMBER(P3T2N3Vertex<span class="operator">,</span> texCoord) <span class="operator">/</span> <span class="keyword">sizeof</span>(<span class="type">float</span>)<span class="operator">,</span> <span class="keyword">sizeof</span>(QVector3D)<span class="operator">,</span> <span class="number">0</span>}<span class="operator">,</span>
{VertexDescription<span class="operator">::</span>Normal<span class="operator">,</span> GL_FLOAT<span class="operator">,</span> SIZE_OF_MEMBER(P3T2N3Vertex<span class="operator">,</span> normal) <span class="operator">/</span> <span class="keyword">sizeof</span>(<span class="type">float</span>)<span class="operator">,</span> <span class="keyword">sizeof</span>(QVector3D) <span class="operator">+</span> <span class="keyword">sizeof</span>(QVector2D)<span class="operator">,</span> <span class="number">0</span>}<span class="operator">,</span>
{VertexDescription<span class="operator">::</span>Null<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="number">0</span>}<span class="operator">,</span>
};
<span class="comment">//============================================================================//</span>
<span class="comment">// GLRoundedBox //</span>
<span class="comment">//============================================================================//</span>
<span class="type">float</span> lerp(<span class="type">float</span> a<span class="operator">,</span> <span class="type">float</span> b<span class="operator">,</span> <span class="type">float</span> t)
{
<span class="keyword">return</span> a <span class="operator">*</span> (<span class="number">1.0f</span> <span class="operator">-</span> t) <span class="operator">+</span> b <span class="operator">*</span> t;
}
GLRoundedBox<span class="operator">::</span>GLRoundedBox(<span class="type">float</span> r<span class="operator">,</span> <span class="type">float</span> scale<span class="operator">,</span> <span class="type">int</span> n)
: GLTriangleMesh<span class="operator"><</span>P3T2N3Vertex<span class="operator">,</span> <span class="type">unsigned</span> <span class="type">short</span><span class="operator">></span>((n<span class="operator">+</span><span class="number">2</span>)<span class="operator">*</span>(n<span class="operator">+</span><span class="number">3</span>)<span class="operator">*</span><span class="number">4</span><span class="operator">,</span> (n<span class="operator">+</span><span class="number">1</span>)<span class="operator">*</span>(n<span class="operator">+</span><span class="number">1</span>)<span class="operator">*</span><span class="number">24</span><span class="operator">+</span><span class="number">36</span><span class="operator">+</span><span class="number">72</span><span class="operator">*</span>(n<span class="operator">+</span><span class="number">1</span>))
{
<span class="type">int</span> vidx <span class="operator">=</span> <span class="number">0</span><span class="operator">,</span> iidx <span class="operator">=</span> <span class="number">0</span>;
<span class="type">int</span> vertexCountPerCorner <span class="operator">=</span> (n <span class="operator">+</span> <span class="number">2</span>) <span class="operator">*</span> (n <span class="operator">+</span> <span class="number">3</span>) <span class="operator">/</span> <span class="number">2</span>;
P3T2N3Vertex <span class="operator">*</span>vp <span class="operator">=</span> m_vb<span class="operator">.</span>lock();
<span class="type">unsigned</span> <span class="type">short</span> <span class="operator">*</span>ip <span class="operator">=</span> m_ib<span class="operator">.</span>lock();
<span class="keyword">if</span> (<span class="operator">!</span>vp <span class="operator">|</span><span class="operator">|</span> <span class="operator">!</span>ip) {
<a href="../qtcore/qtglobal.html#qWarning">qWarning</a>(<span class="string">"GLRoundedBox::GLRoundedBox: Failed to lock vertex buffer and/or index buffer."</span>);
m_ib<span class="operator">.</span>unlock();
m_vb<span class="operator">.</span>unlock();
<span class="keyword">return</span>;
}
<span class="keyword">for</span> (<span class="type">int</span> corner <span class="operator">=</span> <span class="number">0</span>; corner <span class="operator"><</span> <span class="number">8</span>; <span class="operator">+</span><span class="operator">+</span>corner) {
QVector3D centre(corner <span class="operator">&</span> <span class="number">1</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>
corner <span class="operator">&</span> <span class="number">2</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>
corner <span class="operator">&</span> <span class="number">4</span> <span class="operator">?</span> <span class="number">1.0f</span> : <span class="operator">-</span><span class="number">1.0f</span>);
<span class="type">int</span> winding <span class="operator">=</span> (corner <span class="operator">&</span> <span class="number">1</span>) <span class="operator">^</span> ((corner <span class="operator">></span><span class="operator">></span> <span class="number">1</span>) <span class="operator">&</span> <span class="number">1</span>) <span class="operator">^</span> (corner <span class="operator">></span><span class="operator">></span> <span class="number">2</span>);
<span class="type">int</span> offsX <span class="operator">=</span> ((corner <span class="operator">^</span> <span class="number">1</span>) <span class="operator">-</span> corner) <span class="operator">*</span> vertexCountPerCorner;
<span class="type">int</span> offsY <span class="operator">=</span> ((corner <span class="operator">^</span> <span class="number">2</span>) <span class="operator">-</span> corner) <span class="operator">*</span> vertexCountPerCorner;
<span class="type">int</span> offsZ <span class="operator">=</span> ((corner <span class="operator">^</span> <span class="number">4</span>) <span class="operator">-</span> corner) <span class="operator">*</span> vertexCountPerCorner;
<span class="comment">// Face polygons</span>
<span class="keyword">if</span> (winding) {
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> offsX;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> offsY;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> vertexCountPerCorner <span class="operator">-</span> n <span class="operator">-</span> <span class="number">2</span>;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> vertexCountPerCorner <span class="operator">-</span> n <span class="operator">-</span> <span class="number">2</span> <span class="operator">+</span> offsY;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> vertexCountPerCorner <span class="operator">-</span> n <span class="operator">-</span> <span class="number">2</span> <span class="operator">+</span> offsZ;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> vertexCountPerCorner <span class="operator">-</span> <span class="number">1</span>;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> vertexCountPerCorner <span class="operator">-</span> <span class="number">1</span> <span class="operator">+</span> offsZ;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> vertexCountPerCorner <span class="operator">-</span> <span class="number">1</span> <span class="operator">+</span> offsX;
}
<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> n <span class="operator">+</span> <span class="number">2</span>; <span class="operator">+</span><span class="operator">+</span>i) {
<span class="comment">// Edge polygons</span>
<span class="keyword">if</span> (winding <span class="operator">&</span><span class="operator">&</span> i <span class="operator"><</span> n <span class="operator">+</span> <span class="number">1</span>) {
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> i <span class="operator">+</span> <span class="number">1</span>;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> offsY <span class="operator">+</span> i <span class="operator">+</span> <span class="number">1</span>;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> offsY;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> offsY <span class="operator">+</span> i <span class="operator">+</span> <span class="number">1</span>;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> i;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> <span class="number">2</span> <span class="operator">*</span> i <span class="operator">+</span> <span class="number">2</span>;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> i <span class="operator">+</span> offsX;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> <span class="number">2</span> <span class="operator">*</span> i <span class="operator">+</span> offsX <span class="operator">+</span> <span class="number">2</span>;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> i <span class="operator">+</span> offsX;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> <span class="number">2</span> <span class="operator">*</span> i <span class="operator">+</span> <span class="number">2</span>;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> (corner <span class="operator">+</span> <span class="number">1</span>) <span class="operator">*</span> vertexCountPerCorner <span class="operator">-</span> <span class="number">1</span> <span class="operator">-</span> i;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> (corner <span class="operator">+</span> <span class="number">1</span>) <span class="operator">*</span> vertexCountPerCorner <span class="operator">-</span> <span class="number">2</span> <span class="operator">-</span> i;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> (corner <span class="operator">+</span> <span class="number">1</span>) <span class="operator">*</span> vertexCountPerCorner <span class="operator">-</span> <span class="number">1</span> <span class="operator">-</span> i <span class="operator">+</span> offsZ;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> (corner <span class="operator">+</span> <span class="number">1</span>) <span class="operator">*</span> vertexCountPerCorner <span class="operator">-</span> <span class="number">2</span> <span class="operator">-</span> i <span class="operator">+</span> offsZ;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> (corner <span class="operator">+</span> <span class="number">1</span>) <span class="operator">*</span> vertexCountPerCorner <span class="operator">-</span> <span class="number">1</span> <span class="operator">-</span> i <span class="operator">+</span> offsZ;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> (corner <span class="operator">+</span> <span class="number">1</span>) <span class="operator">*</span> vertexCountPerCorner <span class="operator">-</span> <span class="number">2</span> <span class="operator">-</span> i;
}
<span class="keyword">for</span> (<span class="type">int</span> j <span class="operator">=</span> <span class="number">0</span>; j <span class="operator"><</span><span class="operator">=</span> i; <span class="operator">+</span><span class="operator">+</span>j) {
QVector3D normal <span class="operator">=</span> QVector3D(i <span class="operator">-</span> j<span class="operator">,</span> j<span class="operator">,</span> n <span class="operator">+</span> <span class="number">1</span> <span class="operator">-</span> i)<span class="operator">.</span>normalized();
QVector3D offset(<span class="number">0.5f</span> <span class="operator">-</span> r<span class="operator">,</span> <span class="number">0.5f</span> <span class="operator">-</span> r<span class="operator">,</span> <span class="number">0.5f</span> <span class="operator">-</span> r);
QVector3D pos <span class="operator">=</span> centre <span class="operator">*</span> (offset <span class="operator">+</span> r <span class="operator">*</span> normal);
vp<span class="operator">[</span>vidx<span class="operator">]</span><span class="operator">.</span>position <span class="operator">=</span> scale <span class="operator">*</span> pos;
vp<span class="operator">[</span>vidx<span class="operator">]</span><span class="operator">.</span>normal <span class="operator">=</span> centre <span class="operator">*</span> normal;
vp<span class="operator">[</span>vidx<span class="operator">]</span><span class="operator">.</span>texCoord <span class="operator">=</span> QVector2D(pos<span class="operator">.</span>x() <span class="operator">+</span> <span class="number">0.5f</span><span class="operator">,</span> pos<span class="operator">.</span>y() <span class="operator">+</span> <span class="number">0.5f</span>);
<span class="comment">// Corner polygons</span>
<span class="keyword">if</span> (i <span class="operator"><</span> n <span class="operator">+</span> <span class="number">1</span>) {
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> i <span class="operator">+</span> <span class="number">2</span> <span class="operator">-</span> winding;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> i <span class="operator">+</span> <span class="number">1</span> <span class="operator">+</span> winding;
}
<span class="keyword">if</span> (i <span class="operator"><</span> n) {
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> i <span class="operator">+</span> <span class="number">1</span> <span class="operator">+</span> winding;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> i <span class="operator">+</span> <span class="number">2</span> <span class="operator">-</span> winding;
ip<span class="operator">[</span>iidx<span class="operator">+</span><span class="operator">+</span><span class="operator">]</span> <span class="operator">=</span> vidx <span class="operator">+</span> <span class="number">2</span> <span class="operator">*</span> i <span class="operator">+</span> <span class="number">4</span>;
}
<span class="operator">+</span><span class="operator">+</span>vidx;
}
}
}
m_ib<span class="operator">.</span>unlock();
m_vb<span class="operator">.</span>unlock();
}
</pre>
</div>
<!-- @@@graphicsview/boxes/roundedbox.cpp -->
</div>
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Documentation contributions included herein are the copyrights of
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distrib
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Mageia
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6
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armv5tl
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media
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core-updates
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by-pkgid
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