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authorLars Knoll <lars.knoll@nokia.com>2009-03-23 09:18:55 (GMT)
committerSimon Hausmann <simon.hausmann@nokia.com>2009-03-23 09:18:55 (GMT)
commite5fcad302d86d316390c6b0f62759a067313e8a9 (patch)
treec2afbf6f1066b6ce261f14341cf6d310e5595bc1 /examples/activeqt/opengl/glbox.cpp
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Long live Qt 4.5!
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/****************************************************************************
+**
+** 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
+**
+****************************************************************************/
+
+#include "glbox.h"
+#include <QAxAggregated>
+#include <QUuid>
+//! [0]
+#include <objsafe.h>
+//! [0]
+
+#if defined(Q_CC_MSVC)
+#pragma warning(disable:4305) // init: truncation from const double to float
+#endif
+
+/*!
+ Create a GLBox widget
+*/
+
+GLBox::GLBox( QWidget* parent, const char* name )
+ : QGLWidget( parent )
+{
+ xRot = yRot = zRot = 0.0; // default object rotation
+ scale = 1.25; // default object scale
+ object = 0;
+}
+
+
+/*!
+ Release allocated resources
+*/
+
+GLBox::~GLBox()
+{
+ makeCurrent();
+ glDeleteLists( object, 1 );
+}
+
+
+/*!
+ Paint the box. The actual openGL commands for drawing the box are
+ performed here.
+*/
+
+void GLBox::paintGL()
+{
+ glClear( GL_COLOR_BUFFER_BIT );
+
+ glLoadIdentity();
+ glTranslatef( 0.0, 0.0, -10.0 );
+ glScalef( scale, scale, scale );
+
+ glRotatef( xRot, 1.0, 0.0, 0.0 );
+ glRotatef( yRot, 0.0, 1.0, 0.0 );
+ glRotatef( zRot, 0.0, 0.0, 1.0 );
+
+ glCallList( object );
+}
+
+
+/*!
+ Set up the OpenGL rendering state, and define display list
+*/
+
+void GLBox::initializeGL()
+{
+ qglClearColor(Qt::black); // Let OpenGL clear to black
+ object = makeObject(); // Generate an OpenGL display list
+ glShadeModel( GL_FLAT );
+}
+
+
+
+/*!
+ Set up the OpenGL view port, matrix mode, etc.
+*/
+
+void GLBox::resizeGL( int w, int h )
+{
+ glViewport( 0, 0, (GLint)w, (GLint)h );
+ glMatrixMode( GL_PROJECTION );
+ glLoadIdentity();
+ glFrustum( -1.0, 1.0, -1.0, 1.0, 5.0, 15.0 );
+ glMatrixMode( GL_MODELVIEW );
+}
+
+
+/*!
+ Generate an OpenGL display list for the object to be shown, i.e. the box
+*/
+
+GLuint GLBox::makeObject()
+{
+ GLuint list;
+
+ list = glGenLists( 1 );
+
+ glNewList( list, GL_COMPILE );
+
+ qglColor(Qt::white); // Shorthand for glColor3f or glIndex
+
+ glLineWidth( 2.0 );
+
+ glBegin( GL_LINE_LOOP );
+ glVertex3f( 1.0, 0.5, -0.4 );
+ glVertex3f( 1.0, -0.5, -0.4 );
+ glVertex3f( -1.0, -0.5, -0.4 );
+ glVertex3f( -1.0, 0.5, -0.4 );
+ glEnd();
+
+ glBegin( GL_LINE_LOOP );
+ glVertex3f( 1.0, 0.5, 0.4 );
+ glVertex3f( 1.0, -0.5, 0.4 );
+ glVertex3f( -1.0, -0.5, 0.4 );
+ glVertex3f( -1.0, 0.5, 0.4 );
+ glEnd();
+
+ glBegin( GL_LINES );
+ glVertex3f( 1.0, 0.5, -0.4 ); glVertex3f( 1.0, 0.5, 0.4 );
+ glVertex3f( 1.0, -0.5, -0.4 ); glVertex3f( 1.0, -0.5, 0.4 );
+ glVertex3f( -1.0, -0.5, -0.4 ); glVertex3f( -1.0, -0.5, 0.4 );
+ glVertex3f( -1.0, 0.5, -0.4 ); glVertex3f( -1.0, 0.5, 0.4 );
+ glEnd();
+
+ glEndList();
+
+ return list;
+}
+
+
+/*!
+ Set the rotation angle of the object to \e degrees around the X axis.
+*/
+
+void GLBox::setXRotation( int degrees )
+{
+ xRot = (GLfloat)(degrees % 360);
+ updateGL();
+}
+
+
+/*!
+ Set the rotation angle of the object to \e degrees around the Y axis.
+*/
+
+void GLBox::setYRotation( int degrees )
+{
+ yRot = (GLfloat)(degrees % 360);
+ updateGL();
+}
+
+
+/*!
+ Set the rotation angle of the object to \e degrees around the Z axis.
+*/
+
+void GLBox::setZRotation( int degrees )
+{
+ zRot = (GLfloat)(degrees % 360);
+ updateGL();
+}
+
+//! [1]
+class ObjectSafetyImpl : public QAxAggregated,
+ public IObjectSafety
+{
+public:
+//! [1] //! [2]
+ ObjectSafetyImpl() {}
+
+ long queryInterface( const QUuid &iid, void **iface )
+ {
+ *iface = 0;
+ if ( iid == IID_IObjectSafety )
+ *iface = (IObjectSafety*)this;
+ else
+ return E_NOINTERFACE;
+
+ AddRef();
+ return S_OK;
+ }
+
+//! [2] //! [3]
+ QAXAGG_IUNKNOWN;
+
+//! [3] //! [4]
+ HRESULT WINAPI GetInterfaceSafetyOptions( REFIID riid, DWORD *pdwSupportedOptions, DWORD *pdwEnabledOptions )
+ {
+ *pdwSupportedOptions = INTERFACESAFE_FOR_UNTRUSTED_DATA | INTERFACESAFE_FOR_UNTRUSTED_CALLER;
+ *pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_DATA | INTERFACESAFE_FOR_UNTRUSTED_CALLER;
+ return S_OK;
+ }
+ HRESULT WINAPI SetInterfaceSafetyOptions( REFIID riid, DWORD pdwSupportedOptions, DWORD pdwEnabledOptions )
+ {
+ return S_OK;
+ }
+};
+//! [4] //! [5]
+
+QAxAggregated *GLBox::createAggregate()
+{
+ return new ObjectSafetyImpl();
+}
+//! [5]