coinhistory.cpp.in

学习 open inventor 的例子

/**************************************************************************\
 *
 *  This file is part of a set of example programs for the Coin library.
 *  Copyright (C) 2000-2003 by Systems in Motion. All rights reserved.
 *
 *                   <URL:http://www.coin3d.org>
 *
 *  This sourcecode can be redistributed and/or modified under the
 *  terms of the GNU General Public License version 2 as published by
 *  the Free Software Foundation. See the file COPYING at the root
 *  directory of the distribution for more details.
 *
 *  As a special exception, all sourcecode of the demo examples can be
 *  used for any purpose for licensees of the Coin Professional
 *  Edition License, without the restrictions of the GNU GPL. See our
 *  web pages for information about how to acquire a Professional Edition
 *  License.
 *
 *  Systems in Motion, <URL:http://www.sim.no>, <mailto:[e-mail]>
 *
\**************************************************************************/
/* ********************************************************************** *
 * coinhistory
 *
 * Demo application for showcasing Coin.
 *
 * Written by Thomas Hammer <[e-mail]>.
 * Some code borrowed from earlier Coin competition entries.
 *
 * ********************************************************************** */

// FIXME: causes a crash when running on top of SGI Inventor with this
// backtrace:
//
//  #0  0x4047740e in SoOutlineFontCache::getFont ()
//     from /usr/local/sgi-inventor/usr/lib/libInventor.so
//  #1  0x4047622c in SoText3::setupFontCache ()
//     from /usr/local/sgi-inventor/usr/lib/libInventor.so
//  #2  0x40475845 in SoText3::computeBBox ()
//     from /usr/local/sgi-inventor/usr/lib/libInventor.so
//  #3  0x404676df in SoShape::getBoundingBox ()
//     from /usr/local/sgi-inventor/usr/lib/libInventor.so
//  #4  0x40413265 in SoNode::getBoundingBoxS ()
//     from /usr/local/sgi-inventor/usr/lib/libInventor.so
//  #5  0x4039cbaf in SoGetBoundingBoxAction::beginTraversal ()
//     from /usr/local/sgi-inventor/usr/lib/libInventor.so
//  #6  0x40399070 in SoAction::apply ()
//     from /usr/local/sgi-inventor/usr/lib/libInventor.so
//  #7  0x8049964 in timerSensorCallback (data=0x0) at coinhistory.cpp:818
//  #8  0x4048d961 in SoSensor::trigger ()
//     from /usr/local/sgi-inventor/usr/lib/libInventor.so
//  #9  0x4048e8e2 in SoTimerSensor::trigger ()
//     from /usr/local/sgi-inventor/usr/lib/libInventor.so
//  #10 0x4048dee5 in SoSensorManager::processTimerQueue ()
//     from /usr/local/sgi-inventor/usr/lib/libInventor.so
//  #11 0x40078cf1 in SoXtEventHandler::xtTimerCallback ()
//     from /usr/local/sgi-inventor/usr/lib/libInventorXt.so
//  #12 0x4078a33a in _XtRemoveAllInputs () from /usr/X11R6/lib/libXt.so.6
//  #13 0x4078a5a9 in XtAppNextEvent () from /usr/X11R6/lib/libXt.so.6
//  #14 0x400789d0 in SoXt::mainLoop ()
//
// Looks like a bug in SGI Inventor that is hard to make a work-around
// for.  20010919 mortene.

#include <math.h>
#include <stdlib.h> // exit()
#include <time.h>

#if HAVE_CONFIG_H
#include <config.h>
#endif // HAVE_CONFIG_H

#include <Inventor/@Gui@/So@Gui@.h>
#include <Inventor/@Gui@/viewers/So@Gui@ExaminerViewer.h>

#include <Inventor/SbLinear.h>
#include <Inventor/nodes/SoScale.h>
#include <Inventor/nodes/SoBaseColor.h>
#include <Inventor/nodes/SoCone.h>
#include <Inventor/nodes/SoCube.h>
#include <Inventor/nodes/SoCylinder.h>
#include <Inventor/nodes/SoShapeHints.h>
#include <Inventor/nodes/SoSphere.h>
#include <Inventor/nodes/SoSeparator.h>
#include <Inventor/nodes/SoText2.h>
#include <Inventor/nodes/SoText3.h>
#include <Inventor/nodes/SoDirectionalLight.h>
#include <Inventor/nodes/SoPerspectiveCamera.h>
#include <Inventor/nodes/SoTransform.h>
#include <Inventor/nodes/SoRotation.h> 
#include <Inventor/nodes/SoFont.h>
#include <Inventor/sensors/SoTimerSensor.h>

#include <Inventor/fields/SoMFString.h>
#include <Inventor/sensors/SoFieldSensor.h>
#include <Inventor/errors/SoDebugError.h>
#include <Inventor/nodes/SoMaterial.h>
#include <Inventor/nodes/SoShape.h>
#include <Inventor/nodes/SoTexture2.h>
#include <Inventor/nodes/SoTextureCoordinateEnvironment.h>
#include <Inventor/nodes/SoTranslation.h>
#include <Inventor/nodes/SoOrthographicCamera.h>

#include <Inventor/elements/SoCoordinateElement.h>
#include <Inventor/elements/SoModelMatrixElement.h>

#include <Inventor/actions/SoGLRenderAction.h>
#include <Inventor/actions/SoGetBoundingBoxAction.h>

// The History of Coin


char text2[] = "\
The History of Coin                  \n\
The humble beginning of Coin goes all the way back to late 1995 when the software developers \
at Systems in Motion created a 3D graphics rendering library inspired by, and designed to \
support, the VRML 1.0 file format. This library was used in amongst others SIM's VRMLview \
and Rational Reducer. \n\
\n\
.....................................\n\
                  \n\
After years of extensions, optimizations, and what-have-you, SIM's \
rendering library began to reach its limitations and needed a serious rework with a better \
fundamental design. We needed flexibility, functionality and extensibility to be able to support \
the requirements of future versions of Rational Reducer, as well as efficient development of \
custom solutions for our partners. We needed a high-level, retained mode rendering library with \
support for multiple platforms and multiple file formats. \n\
\n\
.....................................\n\
                  \n\
Parts of the API was already quite like \
the Open Inventor API on the surface, and since the fundamental design of the Open Inventor API \
is so excellent, we chose to make our new library, then named Coin, API compatible with Open \
Inventor. \n\
                  \n\
The API decision was followed by a long period of \"inventorizing\" our rendering \
library. \
\n\
.....................................\n\
                  \n\
With an alternative to SGI's and TGS' Open Inventor libraries on our hands, we thought; \
Why not make this great tool available to the rest of the community? The launch of Coin under \
the LGPL, and later under a commercial license, is the direct answer to that question. \n\
\n\
.....................................\n\
                  \n\
Our dream is to combine efficient coding \
and efficient performance into a library \
that will be a must for anyone writing \
software for 3d graphics.        \n\
\n\
.....................................\n\
                    \n";

int textpos;
int textlen;
float deltax;
int line;
int spos;
int currpart;
SbTime lastlettertime; 
#define XPOS -9.5f

#define LINE_BREAK 40
#define NUM_PARTICLES 160
#define NUM_LINES 3

#define FALLDELAY 3.0f
#define TEXTDELAY 0.04f

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