Book Image

Augmented Reality for Developers

By : Jonathan Linowes, Krystian Babilinski
Book Image

Augmented Reality for Developers

By: Jonathan Linowes, Krystian Babilinski

Overview of this book

Augmented Reality brings with it a set of challenges that are unseen and unheard of for traditional web and mobile developers. This book is your gateway to Augmented Reality development—not a theoretical showpiece for your bookshelf, but a handbook you will keep by your desk while coding and architecting your first AR app and for years to come. The book opens with an introduction to Augmented Reality, including markets, technologies, and development tools. You will begin by setting up your development machine for Android, iOS, and Windows development, learning the basics of using Unity and the Vuforia AR platform as well as the open source ARToolKit and Microsoft Mixed Reality Toolkit. You will also receive an introduction to Apple's ARKit and Google's ARCore! You will then focus on building AR applications, exploring a variety of recognition targeting methods. You will go through multiple complete projects illustrating key market sectors including business marketing, education, industrial training, and gaming. By the end of the book, you will have gained the necessary knowledge to make quality content appropriate for a range of AR devices, platforms, and intended uses.
Table of Contents (16 chapters)
Title Page
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

About Mixed Reality Toolkit Input Manager


The HoloToolkit Input Manager prefab is an empty (nongraphical) object that includes the components Gaze Manager, Input Manager, and (in a child object) Gestures Input, as well as others. You can open these scripts to read through them and see in detail what they do and how they're implemented.

Gaze Manager

The GazeManager provides a useful Unity interface for managing the gaze ray-the user's camera view direction-and its interaction with other objects in the scene. This includes the current HitInfo (see https://docs.unity3d.com/ScriptReference/RaycastHit.html). GazeManager is a singleton class, ensuring that there is only one instance in the scene. In each game update, it gathers the current gaze info and does a physics raycast to see if any objects are at the center of the user's view. It also includes some magic goodness to stabilize the gaze pose for comfort, compensating for the fact that it's tied to your head movement, which may not be as smooth...