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Breadcrumbs go here --> </ul> </div> <div class="toolbuttons toolblock"> <ul> <li id="smallA" class="t_button">A</li> <li id="medA" class="t_button active">A</li> <li id="bigA" class="t_button">A</li> <li id="print" class="t_button"><a href="javascript:this.print();"> <span>Print</span></a></li> </ul> </div> </div> <div class="content mainContent"> <h1 class="title">glbox.cpp Example File</h1> <span class="small-subtitle">activeqt/opengl/glbox.cpp</span> <!-- $$$activeqt/opengl/glbox.cpp-description --> <div class="descr"> <a name="details"></a> <pre class="cpp"> <span class="comment">/**************************************************************************** ** ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). ** Contact: http://www.qt-project.org/legal ** ** 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 Digia Plc 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." ** ** $QT_END_LICENSE$ ** ****************************************************************************/</span> <span class="comment">/**************************************************************************** ** ** This is a simple QGLWidget displaying an openGL wireframe box ** ** The OpenGL code is mostly borrowed from Brian Pauls "spin" example ** in the Mesa distribution ** ****************************************************************************/</span> <span class="preprocessor">#include "glbox.h"</span> <span class="preprocessor">#include <QAxAggregated></span> <span class="preprocessor">#include <QUuid></span> <span class="preprocessor">#include <objsafe.h></span> <span class="preprocessor">#if defined(Q_CC_MSVC)</span> <span class="preprocessor">#pragma warning(disable:4305) // init: truncation from const double to float</span> <span class="preprocessor">#endif</span> <span class="comment">/*! Create a GLBox widget */</span> GLBox<span class="operator">::</span>GLBox( <span class="type"><a href="qwidget.html">QWidget</a></span><span class="operator">*</span> parent<span class="operator">,</span> <span class="keyword">const</span> <span class="type">char</span><span class="operator">*</span> name ) : <span class="type"><a href="qglwidget.html">QGLWidget</a></span>( parent ) { xRot <span class="operator">=</span> yRot <span class="operator">=</span> zRot <span class="operator">=</span> <span class="number">0.0</span>; <span class="comment">// default object rotation</span> scale <span class="operator">=</span> <span class="number">1.25</span>; <span class="comment">// default object scale</span> object <span class="operator">=</span> <span class="number">0</span>; } <span class="comment">/*! Release allocated resources */</span> GLBox<span class="operator">::</span><span class="operator">~</span>GLBox() { makeCurrent(); glDeleteLists( object<span class="operator">,</span> <span class="number">1</span> ); } <span class="comment">/*! Paint the box. The actual openGL commands for drawing the box are performed here. */</span> <span class="type">void</span> GLBox<span class="operator">::</span>paintGL() { glClear( GL_COLOR_BUFFER_BIT ); glLoadIdentity(); glTranslatef( <span class="number">0.0</span><span class="operator">,</span> <span class="number">0.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">10.0</span> ); glScalef( scale<span class="operator">,</span> scale<span class="operator">,</span> scale ); glRotatef( xRot<span class="operator">,</span> <span class="number">1.0</span><span class="operator">,</span> <span class="number">0.0</span><span class="operator">,</span> <span class="number">0.0</span> ); glRotatef( yRot<span class="operator">,</span> <span class="number">0.0</span><span class="operator">,</span> <span class="number">1.0</span><span class="operator">,</span> <span class="number">0.0</span> ); glRotatef( zRot<span class="operator">,</span> <span class="number">0.0</span><span class="operator">,</span> <span class="number">0.0</span><span class="operator">,</span> <span class="number">1.0</span> ); glCallList( object ); } <span class="comment">/*! Set up the OpenGL rendering state, and define display list */</span> <span class="type">void</span> GLBox<span class="operator">::</span>initializeGL() { qglClearColor(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>black); <span class="comment">// Let OpenGL clear to black</span> object <span class="operator">=</span> makeObject(); <span class="comment">// Generate an OpenGL display list</span> glShadeModel( GL_FLAT ); } <span class="comment">/*! Set up the OpenGL view port, matrix mode, etc. */</span> <span class="type">void</span> GLBox<span class="operator">::</span>resizeGL( <span class="type">int</span> w<span class="operator">,</span> <span class="type">int</span> h ) { glViewport( <span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> (GLint)w<span class="operator">,</span> (GLint)h ); glMatrixMode( GL_PROJECTION ); glLoadIdentity(); glFrustum( <span class="operator">-</span><span class="number">1.0</span><span class="operator">,</span> <span class="number">1.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">1.0</span><span class="operator">,</span> <span class="number">1.0</span><span class="operator">,</span> <span class="number">5.0</span><span class="operator">,</span> <span class="number">15.0</span> ); glMatrixMode( GL_MODELVIEW ); } <span class="comment">/*! Generate an OpenGL display list for the object to be shown, i.e. the box */</span> GLuint GLBox<span class="operator">::</span>makeObject() { GLuint list; list <span class="operator">=</span> glGenLists( <span class="number">1</span> ); glNewList( list<span class="operator">,</span> GL_COMPILE ); qglColor(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>white); <span class="comment">// Shorthand for glColor3f or glIndex</span> glLineWidth( <span class="number">2.0</span> ); glBegin( GL_LINE_LOOP ); glVertex3f( <span class="number">1.0</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.4</span> ); glVertex3f( <span class="number">1.0</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">0.4</span> ); glVertex3f( <span class="operator">-</span><span class="number">1.0</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">0.4</span> ); glVertex3f( <span class="operator">-</span><span class="number">1.0</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.4</span> ); glEnd(); glBegin( GL_LINE_LOOP ); glVertex3f( <span class="number">1.0</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="number">0.4</span> ); glVertex3f( <span class="number">1.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="number">0.4</span> ); glVertex3f( <span class="operator">-</span><span class="number">1.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="number">0.4</span> ); glVertex3f( <span class="operator">-</span><span class="number">1.0</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="number">0.4</span> ); glEnd(); glBegin( GL_LINES ); glVertex3f( <span class="number">1.0</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.4</span> ); glVertex3f( <span class="number">1.0</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="number">0.4</span> ); glVertex3f( <span class="number">1.0</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">0.4</span> ); glVertex3f( <span class="number">1.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="number">0.4</span> ); glVertex3f( <span class="operator">-</span><span class="number">1.0</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">0.4</span> ); glVertex3f( <span class="operator">-</span><span class="number">1.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.5</span><span class="operator">,</span> <span class="number">0.4</span> ); glVertex3f( <span class="operator">-</span><span class="number">1.0</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.4</span> ); glVertex3f( <span class="operator">-</span><span class="number">1.0</span><span class="operator">,</span> <span class="number">0.5</span><span class="operator">,</span> <span class="number">0.4</span> ); glEnd(); glEndList(); <span class="keyword">return</span> list; } <span class="comment">/*! Set the rotation angle of the object to \e degrees around the X axis. */</span> <span class="type">void</span> GLBox<span class="operator">::</span>setXRotation( <span class="type">int</span> degrees ) { xRot <span class="operator">=</span> (GLfloat)(degrees <span class="operator">%</span> <span class="number">360</span>); updateGL(); } <span class="comment">/*! Set the rotation angle of the object to \e degrees around the Y axis. */</span> <span class="type">void</span> GLBox<span class="operator">::</span>setYRotation( <span class="type">int</span> degrees ) { yRot <span class="operator">=</span> (GLfloat)(degrees <span class="operator">%</span> <span class="number">360</span>); updateGL(); } <span class="comment">/*! Set the rotation angle of the object to \e degrees around the Z axis. */</span> <span class="type">void</span> GLBox<span class="operator">::</span>setZRotation( <span class="type">int</span> degrees ) { zRot <span class="operator">=</span> (GLfloat)(degrees <span class="operator">%</span> <span class="number">360</span>); updateGL(); } <span class="keyword">class</span> ObjectSafetyImpl : <span class="keyword">public</span> <span class="type"><a href="qaxaggregated.html">QAxAggregated</a></span><span class="operator">,</span> <span class="keyword">public</span> IObjectSafety { <span class="keyword">public</span>: ObjectSafetyImpl() {} <span class="type">long</span> queryInterface( <span class="keyword">const</span> <span class="type"><a href="quuid.html">QUuid</a></span> <span class="operator">&</span>iid<span class="operator">,</span> <span class="type">void</span> <span class="operator">*</span><span class="operator">*</span>iface ) { <span class="operator">*</span>iface <span class="operator">=</span> <span class="number">0</span>; <span class="keyword">if</span> ( iid <span class="operator">=</span><span class="operator">=</span> IID_IObjectSafety ) <span class="operator">*</span>iface <span class="operator">=</span> (IObjectSafety<span class="operator">*</span>)<span class="keyword">this</span>; <span class="keyword">else</span> <span class="keyword">return</span> E_NOINTERFACE; AddRef(); <span class="keyword">return</span> S_OK; } QAXAGG_IUNKNOWN; HRESULT WINAPI GetInterfaceSafetyOptions( REFIID riid<span class="operator">,</span> DWORD <span class="operator">*</span>pdwSupportedOptions<span class="operator">,</span> DWORD <span class="operator">*</span>pdwEnabledOptions ) { <span class="operator">*</span>pdwSupportedOptions <span class="operator">=</span> INTERFACESAFE_FOR_UNTRUSTED_DATA <span class="operator">|</span> INTERFACESAFE_FOR_UNTRUSTED_CALLER; <span class="operator">*</span>pdwEnabledOptions <span class="operator">=</span> INTERFACESAFE_FOR_UNTRUSTED_DATA <span class="operator">|</span> INTERFACESAFE_FOR_UNTRUSTED_CALLER; <span class="keyword">return</span> S_OK; } HRESULT WINAPI SetInterfaceSafetyOptions( REFIID riid<span class="operator">,</span> DWORD pdwSupportedOptions<span class="operator">,</span> DWORD pdwEnabledOptions ) { <span class="keyword">return</span> S_OK; } }; <span class="type"><a href="qaxaggregated.html">QAxAggregated</a></span> <span class="operator">*</span>GLBox<span class="operator">::</span>createAggregate() { <span class="keyword">return</span> <span class="keyword">new</span> ObjectSafetyImpl(); }</pre> </div> <!-- @@@activeqt/opengl/glbox.cpp --> </div> </div> </div> <div class="ft"> <span></span> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2013 Digia Plc and/or its subsidiaries. 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