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I N T E R A C T I V E 3 DApplication Development

USING EON PROFESSIONAL

FOR CREATING

3D VISUALIZATIONS

Justice · Bergerud · Garrison · Cafi ero · ChurchesEON Reality, Inc.

and the

Kentucky Community and Technical College System

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v

Table of Contents

Preface xix

Introduction xxi

Module 1: Getting Started with EON Studio 1

Lesson 1.1: Introduction to Interactive 3D Environments 2Visualization and Simulation, 2

Disciplines and Definitions, 3Simulations and Games, 4Models, 5Why Simulate?, 5

Serious Games in the Real World, 5Classifications and Subsets of Serious Games, 6Examples of Serious Games, 8

What Does EON Bring to Simulation?, 10EON Software, 10EON Display Systems, 14EON Plug-Ins, 16

Navigating in EON Studio, 16Navigating with a Game Controller, 19

EON Development Workflow, 20

Simulation Creation Overview, 20

Lesson 1.2: EON Studio Workspace 24EON Studio Terms, 24

Basic Explanation of Nodes, 25Basic Explanation of Prototypes, 25

Main EON Studio Windows, 26Basic Window Types, 27Simulation Tree Window, 28Components Window, 30Placing Nodes and Prototypes in the Simulation Tree, 31Routes Window, 34

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Other EON Studio Child Windows, 40Property Bar, 40Log Window, 42Find Window, 44Butterfly Window, 48

Toolbars, 51Toolbar, 51EON Zoom Extents Bar, 52EONSelectionTools Bar, 52VisualNodesTools Bar, 53Status Bar, 53

Returning to the Default Layout, 53

Getting Help, 53Context-Sensitive Help (F1 Key), 53Help Topics, 54

Lesson 1.3: Introducing EON Nodes and Basic Prototypes 55Data Types, 56

Fields, 57Viewing Node Fields, 57Viewing Field Properties, 58Setting Field Values, 59Property Bar Settings, 63

Nodes, 65Node Libraries, 67Node Functions, 70

Commonly Used Nodes, 742DText, 742DImage, 74ClickSensor, 74Converter, 75Counter, 75DirectSound, 75Frame, 75Group, 75KeyboardSensor, 75KeyFrame, 75Latch, 76Light, 76Material2, 76Mesh2, 76MovieTexture, 77Place, 77PopupMenu, 77Rotate, 78SceneModifier, 78Script, 78SphereSensor, 78TextBox, 78

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Texture2, 78TimeSensor, 79ToolTip, 79Viewport, 79Walk, 79WalkAbout, 79

General Guidelines for Using Nodes, 80Copying and Moving Nodes, 80Renaming Nodes, 81Changing Node Properties, 81

Adding Prototypes to EON, 84Definition and Instances, 86Adding Prototypes to the Scene, 87

Commonly Used Prototypes, 90Camera Functions Prototypes, 90ObjectNav Prototypes, 91OrbitNav Prototypes, 92Useful Functions Prototypes, 93Top Most-Used Prototypes, 94

Module 1: Simulation, 96

Module 2: Fundamentals of EON 99

Lesson 2.1: Fundamentals of Developing Interactive 3D Environments 100Workflow for Creating EON Applications, 101

Before Importing to EON, 101In EON Studio, 101Distributing EON Applications, 102

Interactive Media Storyboarding and Project Planning, 102Thumbnail Storyboard, 103Graphic Storyboard, 104

External Resources, 105Models, 105Materials and Textures, 106Audio and Video Files, 106Pros and Cons of External Resources, 111Raptor, 112

Rendering, 112

Establishing the Virtual World, 113Visibility Determination, 114Level of Detail, 114Hidden Surface Removal, 116Rasterization, 116

The Coordinate System, 117Positioning 3D Objects in the Simulation Scene, 119Translation, 119Rotation, 119Using the KeyMove Node to Place Objects, 120

Table of Contents vii

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Lesson 2.2: Organizing, Running, and Saving an EON Application 125Simulation Tree and Node Hierarchy Relationships, 125

Using the Frame Node, 128Using the Group Node for Organization, 130

Accessing and Changing Node Properties, 132

Connecting Nodes Using the Routes Window, 133Receiving External Data via inEvent Nodes, 133Sending Internal Data via outEvent Nodes, 135Receiving and Sending Events, 136

Saving EON Project Files, 137EON File Formats, 137Internal and External Resources, 139

Viewing the EON Application in Real Time, 140EON Studio, 140EON Viewer, 140

Configuration Setting for Rendering Engine, 140Driver Options, 141Rendering Quality Options, 143CPU Time, 144


Module 3: Importing into EON 157

Lesson 3.1: Model Export Considerations 158Grouping, Hierarchy, and Naming, 159

Pivot Points, 161

Geometry Optimization, 164

Camera Views and Animations, 167Camera Positions, 167Animations, 167

Lights, 170

Lesson 3.2: Import and Place 3D Objects 172Procedures for Importing 3D Objects into EON, 173

Importing Compatible 3D Object File Formats, 173Using File Format Importer, 174EON Raptor, 179VRML, 179Importing Noncompatible 3D Object File Formats, 181

Positioning Prototypes, 181MoveRotateArrows3D Prototype vs. DragManager

and DragSelector Prototypes, 181Mover Prototype, 183StickyMover Prototype, 183QuickPos Prototype, 183

DegreeOfFreedom Node, 183

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Improving Performance and Appearance, 190


Module 4: Object Properties 195

Lesson 4.1: Object Fundamentals 196Texture and Materials Basics, 196

Texture Mapping, 197Texture Projection, 198

Meshes and Materials in EON, 202Composition of a Shape, 202Meshes in EON, 202Materials in EON, 203

Resources Node in EON, 203

Making the Resource Visible, 203

Lesson 4.2: Visual Nodes Library 205Introduction to the Visual Nodes Library, 205

Resource Database, 207Materials, 207Textures, 208TextureResourceGroup, 209Meshes, 212MeshResourceGroup, 213

Light Map Rendering, 215

Light Types, 216Ambient Light, 216Diffuse Light, 216Specular Light, 216Emissive Light, 217

Lesson 4.3: 3D Edit Tools 223Zoom Extents Tool, 223

Selection Tools, 224Shape Selection, 225Geometry Selection, 225Material Selection, 225Texture Selection, 226Reverse Selection, 226

Visual Nodes Tools, 228Convert 3.1 Visual Nodes, 228Merge Shapes with the Same Material, 228Display Info of a Node, 230Make Texture Compression/Resize Permanent, 230Remove Duplicated Resources, 230

Face Fixing Tool, 232

Paint Material Tool, 232


Table of Contents ix

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Module 5: Object Appearance, Behavior, and Interactivity 237

Lesson 5.1: Modify Object Appearance 238Adding Light, 238

Light Modes, 239Light Node Parameters, 239Default Light Nodes, 242

Adding Textures, 243Texture2 Node Properties, 244

Material2 Node, 244

Object Appearance, 244

Scaling: Changing the Size of Objects, 244

Shape Node, 245

Transparency, 245

Modifying Render Settings, 246Driver, 247Rendering Quality, 248

Lesson 5.2: Add Behavior and Interactivity to Simulations 250Adding Motion, 250

Scene Navigation Using the Camera, 251Object Navigation Model, 251Walk Navigation Model, 251

Methods of Movement, 251OrbitNav Prototype, 251Walk Node, 251Joystick Node, 254WalkAbout Node, 255KeyMove Node, 255SuperMan Prototype, 256

Object Movement in 3D Space, 256Movement Along a Predefined Path, 257Sensor Nodes, 264Interactive Movement, 267

Handling Collisions, 267Base Nodes Overview, 267Collision Geometry Types, 268Collision Response, 270


Module 6: EON Views and User Interfaces 275

Lesson 6.1: Viewports and Cameras 276Understanding Viewports in EON, 276

EON Viewport Elements, 277EON Viewport Properties, 279

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Understanding Cameras in EON, 282Creating Camera Views in EON, 282Collision on a Camera, 284

Lesson 6.2: User Interfaces 287Understanding GUI, 287

Usability, 288User Interfaces, 288Exploring Interfaces in EON, 289

GUI Controls and Buttons Prototypes, 293GUIControls Nodes, 294Buttons Prototypes, 295

Creating an Interface in EON, 297

Adding Interactivity to the Interface, 300

Add Buttons to the Interface, 303


Module 7: Add Media 311

Lesson 7.1: Fundamentals of Media 312Media in the Real World, 312

Media Nodes in EON, 314

Fundamentals of Sound, 314Sound from Science Class, 314Sound Attenuation, 315Orientation of Sound, 315Stereo Sound, 316

3D Sound in EON, 316Microsoft’s DirectSound® Component of DirectX, 316DirectSound Node, 316Volume of Sound, 317

Fundamentals of Video, 321File Types, 321Microsoft DirectShow, 322

Quality vs. File Size, 323

Lesson 7.2: Adding Sound to a Simulation 325Sound in a Simulation, 325

DirectSound Node, 326DirectSound Node Properties, 326DirectSound Node Fields, 328Media File Storage, 328

Sound Node, 334Sound Node Properties, 334

Creating Realistic Sound, 338

SimultaneousSound Prototype, 341

Table of Contents xi

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SmoothOperator Prototype, 343Event Properties, 345Using Keys, 345

Lesson 7.3: Adding Video to a Simulation 348Video in a Simulation, 348

MovieTexture Node, 349MovieTexture Node Properties, 349MovieTexture Node in Context, 354

Many Ways to Use the MovieTexture Node, 356

TVChannelSwitcher Prototype, 357Setting Up a TVChannelSwitcher Prototype, 357Fields, 358


Module 8: EON Prototypes 363

Lesson 8.1: Fundamentals of Prototypes 364What Are Prototypes?, 364

Why Use Prototypes?, 365What Is an EON Prototype?, 365Prototype Definition vs. Prototype Instance, 366Prototype Library Files, 367

Object vs. Functional Prototypes, 368

Parts of a Prototype, 369Local Prototypes Window, 370Open Source Development, 370Dynamic Prototypes, 371

How Prototypes Work in EON, 371

What Happens in a Prototype When You Run the Simulation?, 373Simulation Startup, 373Simulation Runtime, 373Simulation Shutdown, 373

Lesson 8.2: Using EON-Supplied Prototypes 376Introduction to the EON-Supplied Prototypes, 376

How Are Prototypes Different from Nodes?, 376Most Versatile Prototypes, 377Most Frequently Used Prototypes, 377Derivative Prototypes, 378

Prototype Libraries, 378Selecting a Prototype Library, 379Using Selected Prototypes, 380

General Tips for Using EON-Supplied Prototypes, 396Copying Node References to SFNode Fields, 396Some Prototypes Automatically Find Node

References, 397

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Prototypes Provide a Convenient Way to Send Events, 397IsActive and IsNotActive Fields, 398

Placing Prototypes in the Simulation Tree, 399How Can You Tell That a Node Is a Prototype Instance?, 399Inserting Additional Prototype Instances, 400ClickSensors Can Reside Inside Prototypes, 400Some Prototypes Need Other Prototypes, 400

Common Fields Used by Prototypes, 400DisableWhenMoving Field, 400Refresh Field, 401MouseButton Values Fields, 401

Getting Help to Set Up and Use Prototypes, 401

Using 3D View Prototypes, 403

Using 2D View Prototypes, 419

Lesson 8.3: Developing EON Prototypes 435Creating Prototypes, 435

Creation Methods, 436Start Prototype Creation with a Frame, 436Naming a New Prototype, 436Preserving Routes and Node References, 436Resolve Resource References, 437Nested Prototypes, 440

Adding or Inserting Prototype Instances, 440

Editing Prototypes, 441

Customizing Prototypes, 442

Editing Prototype Definitions, 442Editing the Subtree, 442Editing the General Properties, 444Editing the Exported Fields, 447

Deleting Prototypes, 450Instance Counter, 450Deleting a Prototype Instance, 450

Working with Prototype Libraries, 451Creating a Prototype Library, 451Storing Prototypes, 452EOP File Format, 453Adding Prototypes to a Library, 453Removing Prototypes from a Library, 453Moving Prototypes, 453Deleting Prototype Libraries, 454EDP File Format, 454

Prototype Development Example, 454

Prototype Optimization Example, 467

Scripting for Prototypes, 468

Rearranging the Sequence of Exported Fields, 469

Using Prototypes to Create or Delete Nodes, 471


Table of Contents xiii

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Module 9: Scripting and Dynamic Load 477

Lesson 9.1: Fundamentals of Scripting 478Why Is Scripting, 478

Why Use Scripting?, 479

Programming Concepts, 481Scripting vs. Programming, 481Object-Oriented Programming, 482

How Scripting Works in EON, 483Script Node, 483Scripting Languages, 484EON Extensions to the Scripting Language, 484What Are Fields?, 485Event-Driven Simulations, 486What Can a Script Do?, 486What Cannot Be Done with Script?, 486

Creating Fields for the Script Node, 487SFNode and MFNode Data Types in a Script Node, 488

Event Handlers, 490Creating Event Handlers for User-Defined Fields, 491

Designing Scripts, 498

Using the Script Editor, 503Opening the Script Editor, 503Editing in the Script Editor, 503

Scripting Basics—JScript, 510Statements, 510Variables, 511Operators, 513Intrinsic Objects, Methods, and Properties, 514User-Defined Objects, Methods, and Properties, 514User-Defined Functions, 515

Accessing EON Field Values, 515Single Field (SF) Type Fields, 516Multiple Field (MF) Type Fields, 517

Lesson 9.2: Using Scripts 519Program Flow in EON, 519

Stages of Program Flow, 520Program Flow Example, 522Calling a Function vs. Triggering a Function, 523How to Make Global Variables and Functions, 523Program Flow with Script and a Frame Node, 524The eventsProcessed Event, 525

Copy and Delete Nodes, 528

Including External Script Files, 533Keeping Included Scripts External, 534Working with the Includes Field, 534

Using Script and the PopupUnlimited Prototype, 535

Accessing Text Files, 549

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How to Move Nodes, 561

Recursive Functions, 562

ActiveX Controls, 562Accessing Databases, 564Additional Functions, 564

Lesson 9.3: Dynamic Load Applications 566Introduction to EON Dynamic Load, 566

Advantages of Using EON Dynamic Load, 567Configurable EON Applications, 567

Running an EON Dynamic Load Application, 568

Understanding Web-Based Dynamic Load Applications, 571Authoring Time, 571Runtime, 571

Setting the PrototypebaseURL Property, 571EON Studio, 572EON Viewer, 573Web Pages, 573

Creating a Dynamic Load Application, 574DynamicPrototype Node, 574Nodes That Have the Download Field, 576

Adding Download Bars to Your Application, 579

Configurable EON Dynamic Load Applications, 583

Licenses for EON Dynamic Load, 583EON Server License, 584Dynamic Load Stand Alone License, 584Licensed EDZ Application, 584Choosing the Correct Type of License, 585


Module 10: Working with Advanced Nodes and Prototypes 589

Lesson 10.1: Creating User-Driven Simulations 590Creating User-Driven Simulations, 590

Logic Control Nodes, 591And, Or, XOR, and Not Nodes, 595

Flow Nodes, 599Flow Node Basics, 600Using the Flow Nodes, 602

Lesson 10.2: Data ManipulationData Manipulation in EON, 610

Converters, 611Adapter Prototype , 611GroupGUINodes Prototype, 611Addition, Subtraction, Multiplication, and Division Nodes, 615BooleanSplitter Prototype, 615

Table of Contents xv

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xvi Table of Contents

BooleanToIntegerConverter Prototype, 615Colors Prototype, 615Constant Node, 616Convert3DPosToScreenPos Prototype, 616Converter Node, 618HexColor Prototype, 618MousePos3D Prototype, 618MouseToBoxPosition Prototype, 619MouseToTextBoxPos Prototype, 619Opposites Prototype, 619RouteSwitch Node, 619


Module 11: Running Simulations on End User Computers 633

Lesson 11.1: Building Distribution Files 634Introduction to Simulation Distribution, 634

Distribution File Format, 635Why Should You Create Distribution Files?, 635

Creating a Distribution File, 636

Optimization Features, 637Polygon Reduction, 638Geometry Compression, 639Texture Compression and Conversion, 641

Distribution Prototype Files, 642

External Resource Files, 646

Resource Streaming and Loading, 647Example of Streaming, 647Deciding to Use Streaming, 647Streaming vs. Dynamic Load, 648

Sharing and Protecting Resources, 648Protecting Resources from Unauthorized Use, 648Controlling Access to External Resource Files, 649

Lesson 11.2: Web Publishing and Runtime Installation 656Using the EON Web Publisher Wizard, 656

Step 1: Select a Template, 657Step 2: Select Events, 658Step 3: Configure Background, 659Step 4: Web Page Configuration, 660Step 5: Where Do You Want to Store Your New Site?, 660Step 6: Summary, 662

Running EON Simulations on End User Computers, 666Two Installation Programs, 667EON Applications on the Internet, 667CD/DVD Distribution, 668What Is EonX?, 668What Is an ActiveX Control?, 669

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Table of Contents xvii

Where Does the EON Viewer Setup Program Place Its Files?, 669System Requirements, 669When Does a User Need an EON License?, 670Uninstalling EON Runtime Software, 670

EON Dependency Walker, 670


Appendix A: EON Prototypes 675

Appendix B: EON Scripting Reference 687EON Base Object, 688

Using the Find Method, 693Using the FindNode Method, 693Using the MessageBox Method, 694Using the SetScriptTimeout Method, 695Using the Trace Method, 696Using the TransformOrientation Method, 697Using the TransformPosition Method, 697

EON Node Object, 697Using the GetParentNode Method, 700Using the GetField Method, 700

EON Field Object, 701Field Types, 702Data Types, 702Using the GetName Method, 704Using the GetType Method, 704Using the GetMFCount Method, 704Using the SetMFCount Method, 705Using the GetMFElement Method, 705Using the SetMFElement Method, 706Using the AddMFElement Method, 706Using the RemoveMFElement Method, 707Using the Value Property, 708

Summary, 709

Glossary, 711

Index, 721

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