Book Image

OpenSceneGraph 3 Cookbook

By : Rui Wang, Xuelei Qian
Book Image

OpenSceneGraph 3 Cookbook

By: Rui Wang, Xuelei Qian

Overview of this book

<p>OpenSceneGraph is an open source 3D graphics application programming interface, used by application developers in fields such as visual simulation, computer games, virtual reality, scientific visualization, and modeling. Familiar with its concepts and APIs, and need to improve your knowledge? This book is here to help. With exactly 100 recipes, it will enrich your experience and take you to the next level.<br /><br /><em>OpenSceneGraph 3 Cookbook</em> will escort you into the world of real-time 3D development with OpenSceneGraph, the world famous 3D graphics engine. The book assumes that you are already familiar with some basic concepts, and provides 100 vivid recipes to demonstrate how to utilize the API flexibly and how to implement some practical aspects.<br /><br />The book is divided into 10 chapters, each of which focuses on one topic. Readers may start from any topic they are interested in.<br /><br />The book includes customizing OpenSceneGraph, designing scene graph, geometry, scene navigation, animations, effects using fixed pipeline and shaders, managing mass data, and miscellaneous discussions. Every recipe will prove to be useful in a practical way or in research.<br /><br /><em>OpenSceneGraph 3 Cookbook</em> gives you a wide insight about 3D programming using OpenSceneGraph, with a set of meaningful and interesting examples.</p>

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OpenSceneGraph 3 Cookbook
Rui Wang | Xuelei Qian
Mar, 2012 | 426 pages
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Table of Contents (15 chapters)
OpenSceneGraph 3 Cookbook
OpenSceneGraph 3 Cookbook
Credits
Credits
About the Authors
About the Authors
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Customizing OpenSceneGraph
Customizing OpenSceneGraph
Introduction
Checking out the latest version of OSG
Configuring CMake options
Building common plugins
Compiling and packaging OSG on different platforms
Compiling and using OSG on mobile devices
Compiling and using dynamic and static libraries
Generating the API documentation
Creating your own project using CMake
2
Designing the Scene Graph
Designing the Scene Graph
Introduction
Using smart and observer pointers
Sharing and cloning objects
Computing the world bounding box of any node
Creating a running car
Mirroring the scene graph
Designing a breadth-first node visitor
Implementing a background image node
Making your node always face the screen
Using draw callbacks to execute NVIDIA Cg functions
Implementing a compass node
3
Editing Geometry Models
Editing Geometry Models
Introduction
Creating a polygon with borderlines
Extruding a 2D shape to 3D
Drawing a NURBS surface
Drawing a dynamic clock on the screen
Drawing a ribbon following a model
Selecting and highlighting a model
Selecting a triangle face of the model
Selecting a point on the model
Using vertex-displacement mapping in shaders
Using the draw instanced extension
4
Manipulating the View
Manipulating the View
Introduction
Setting up views on multiple screens
Using slave cameras to simulate a power-wall
Using depth partition to display huge scenes
Implementing the radar map
Showing the top, front, and side views of a model
Manipulating the top, front, and side views
Following a moving model
Using manipulators to follow models
Designing a 2D camera manipulator
Manipulating the view with joysticks
5
Animating Everything
Animating Everything
Introduction
Opening and closing doors
Playing a movie in the 3D world
Designing scrolling text
Implementing morph geometry
Fading in and out
Animating a flight on fire
Dynamically lighting within shaders
Creating a simple Galaxian game
Building a skeleton system
Skinning a customized mesh
Letting the physics engine be
6
Designing Creative Effects
Designing Creative Effects
Introduction
Using the bump mapping technique
Simulating the view-dependent shadow
Implementing transparency with multiple passes
Reading and displaying the depth buffer
Implementing the night vision effect
Implementing the depth-of-field effect
Designing a skybox with the cube map
Creating a simple water effect
Creating a piece of cloud
Customizing the state attribute
7
Visualizing the World
Visualizing the World
Introduction
Preparing the VirtualPlanetBuilder (VPB) tool
Generating a small terrain database
Generating terrain database on the earth
Working with multiple imagery and elevation data
Patching an existing terrain database with newer data
Building NVTT support for device-independent generation
Using SSH to implement cluster generation
Loading and rendering terrain from the Internet
8
Managing Massive Amounts of Data
Managing Massive Amounts of Data
Introduction
Merging geometry data
Compressing texture
Sharing scene objects
Configuring the database pager
Designing a simple culling strategy
Using occlusion query to cull objects
Managing scene objects with an octree algorithm
Rendering point cloud data with draw instancing
Speeding up the scene intersections
9
Integrating with GUI
Integrating with GUI
Introduction
Integrating OSG with Qt
Starting rendering loops in separate threads
Embedding Qt widgets into the scene
Embedding CEGUI elements into the scene
Using the osgWidget library
Using OSG components in GLUT
Running OSG examples on Android
Embedding OSG into web browsers
Designing the command buffer mechanism

About the Reviewers

Vincent Bourdier, a twenty-six years old developer, is a French 3D passionate. After self tuition in 3D modeling and programming, he went to the UTBM (University of Technology of Belfort Montbeliard) in 2003 and received an engineering degree in computer sciences, specializing in imagery, interaction, and virtual reality. A computer graphics and passionate about image processing, he remains curious about new technologies in domains such as AI, Cmake, Augmented reality, and others.

He has been working as a 3D developer at Global Vision Systems (Toulouse, France) since 2008. He is now technical leader on a 3D real-time engine using OpenSceneGraph.

Global Vision Systems (http://www.global-vision-systems.com) is a software developer and publisher, offering innovative Human Machine Interfaces for Aeronautics, Space, Plant, and Process supervision.

I would like to thank my parents for their encouragement even if they don't understand a word of my job, my employers for this opportunity to live my passions and to give me challenges to meet, and all the people from the OpenSceneGraph mailing list for their help and advices, especially Robert Osfield, the OpenSceneGraph fundator.

Torben Dannhauer was born in Germany in 1982 and has been working as a freelancer in software development since 2000. He has also provided web and e-mail hosting since 2005. From 2003 until 2009, he studied mechanical engineering, specializing in flight system dynamics and information technology at University of Technology in Munich.

In his term thesis, he developed an airport traffic simulation tool that was also his first experience with OpenGL with which he visualized the simulation results. In his diploma thesis, he analysed the usability of game engines to serve as visualization software for full flight simulators considering qualification requirements. During the thesis, he decided to start the development of a rudimentary but open source visualization framework, which is based on OpenSceneGraph: osgVisual (www.osgvisual.org).

osgVisual is designed to provide all necessary elements for implementing a visualization software with multiple rendering hosts, projected on curved screens with multiple video channels. After finishing his studies, he still developed the tool, initially as a freelancer, later on as a hobby; nevertheless osgVisual is still under construction and will be for long time.

During his studies, he also started in 2006, to develop software for Chondrometrics GmbH (www.chondrometrics.com), a company providing medical data processing. At the end of 2009, he moved to Ainring (Germany) which is located near to Salzburg (Austria) to join Chondometrics part time and do a Ph.D. in medical science at Paracelsus Medical University Salzburg (www.pmu.ac.at).

Torben is experienced in C/C++ with and without Qt. He programmed PHP for a long time and has expertise in Linux and Windows operating systems. Due to his web and e-mail hosting, he knows Postfix & Co in detail and speaks SQL. Last but not least, he develops OpenSceneGraph applications, mostly related to osgVisual.

In his spare time he loves rowing, mountain biking, and skiing with his partner and friends.

I would like to thank Prof. Dr. Holzapfel (Institute of Flight System Dynamics, University of Technology, Munich) for the initial funding of the osgVisual project. It is great to learn OpenSceneGraph and develop an open source application on a paid basis.

Chris 'Xenon' Hanson is co-founder of 3D and digital imaging companies, 3D Nature and AlphaPixel, and is a veteran of the OpenSceneGraph community. Chris has worked on the OpenGL SuperBible, OpenGL Distilled, and OpenCL in Action. His goal in life is to ski all seven continents and build giant intergalactic fighting robots.

I would like to thank my wife Mindy and son Rhys for putting up with the late nights and potato gun explosions.

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