tailieunhanh - ENGINEERING SOFTWARE FOR ACCESSIBILITY

In real life, we can tell where objects are by measuring distance between them. As for placing them, moving them, and keeping track of where they are nature has developed a pretty good system. On the computer though, we have to somehow keep track of objects in a 3D scene. Mathematicians have developed the coordinate system. You have probably learned in geometry about the X and the Y axis. Well, these two axis define a coordinate plane, that is, a two dimentional world. However, to work in three dimentions, we need one more axis, the Z axis | Microsoft Engineering Software for Accessibility Microsoft Corporation PUBLISHED BY Microsoft Press A Division of Microsoft Corporation One Microsoft Way Redmond Washington 98052-6399 Copyright 2009 by Microsoft Corporation All rights reserved. No part of the contents of this book may be reproduced or transmitted in any form or by any means without the written permission of the publisher. Library of Congress Control Number 2009930292 A CIP catalogue record for this book is available from the British Library. Microsoft Press books are available through booksellers and distributors worldwide. For further information about international editions contact your local Microsoft Corporation office or contact Microsoft Press International directly at fax 425 936-7329. Visit our Web site at mspress. Send comments to mspinput@. Microsoft Microsoft Press Active Accessibility MSDN Silverlight Win32 Windows Windows Server and Windows Vista are either registered trademarks or trademarks of the Microsoft group of companies. Other product and company names mentioned herein may be the trademarks of their respective owners. The example companies organizations products domain names e-mail addresses logos people places and events depicted herein are fictitious. No association with any real company organization product domain name e-mail address logo person place or event is intended or should be inferred. This book expresses the author s views and opinions. The information contained in this book is provided without any express statutory or implied warranties. Neither the authors Microsoft Corporation nor its resellers or distributors will be held liable for any damages caused or alleged to be caused either directly or indirectly by this book. Acquisitions Editor Ben Ryan Developmental Editor Devon Musgrave Project Editor Lynn Finnel Editorial Production Online Training Solutions Inc. Cover Tom Draper Design Body Part No. X15-66460 Table of Contents .