a0002 advanced animation with direct morebook vn 5573

Table of Contents
Advanced Animation with DirectX..................................................................................................................1
Introduction.........................................................................................................................................................4
Part One: Preparations.....................................................................................................................................7
Chapter 1: Preparing for the Book..................................................................................................................8
Overview.................................................................................................................................................8
Installing the DirectX SDK.....................................................................................................................8
Choosing the Debug or Retail Libraries...............................................................................................10
Configuring Your Compiler..................................................................................................................11
Setting the DirectX SDK Directories.............................................................................................11
Linking to the DirectX Libraries....................................................................................................12
Setting the Default char State.........................................................................................................14
Using the Book's Helper Code..............................................................................................................15
Using the Helper Objects...............................................................................................................15
Checking Out the Helper Functions...............................................................................................21
Moving On with the Book....................................................................................................................34
Part Two: Animation Basics...........................................................................................................................36
Chapter 2: Timing in Animation and Movement.........................................................................................37
Using Time−Based Motion...................................................................................................................37
Reading Time in Windows...................................................................................................................37
Animating with Time............................................................................................................................38
Moving with Time................................................................................................................................41
Moving along Paths........................................................................................................................41
Creating an .X Path Parser.............................................................................................................48
Creating In−Game Cinematic Sequences.......................................................................................53
Check Out the Demos...........................................................................................................................54
TimedAnim....................................................................................................................................54
TimedMovement............................................................................................................................55
Route..............................................................................................................................................55
Cinematic........................................................................................................................................56

Chapter 3: Using the .X File Format..............................................................................................................58
Working with .X Templates and Data Objects.....................................................................................58
Defining Templates........................................................................................................................61
Creating Data Objects from Templates..........................................................................................63
Embedding Data Objects and Template Restrictions.....................................................................64
Working with the DirectX Standard Templates.............................................................................65
Accessing .X Files................................................................................................................................66
Registering Custom and Standard Templates................................................................................66
Opening an .X File.........................................................................................................................67
Enumerating Data Objects..............................................................................................................68
Retrieving Data from a Data Object...............................................................................................72
Constructing an .X Parser Class.....................................................................................................75
Loading Meshes from .X......................................................................................................................79
Loading Meshes Using D3DX.......................................................................................................79
Loading Meshes with Your .X Parser............................................................................................82
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Table of Contents
Chapter 3: Using the .X File Format
Loading Skinned Meshes...............................................................................................................83
Loading Frame Hierarchies from .X.....................................................................................................84
Loading Animations from .X................................................................................................................86
Loading Custom Data from .X..............................................................................................................86
Check Out the Demos...........................................................................................................................88
ParseFrame.....................................................................................................................................88
ParseMesh......................................................................................................................................88
Part Three: Skeletal Animation......................................................................................................................90
Chapter 4: Working with Skeletal Animation..............................................................................................91
Overview...............................................................................................................................................91

Taking on Skeletal Animation..............................................................................................................91
Using Skeletal Structures and Bone Hierarchies..................................................................................92
Loading Hierarchies from .X..........................................................................................................93
Modifying Bone Orientation..........................................................................................................95
Updating the Hierarchy..................................................................................................................96
Working with Skinned Meshes.............................................................................................................97
Loading Skinned Meshes from .X................................................................................................100
Creating a Secondary Mesh Container.........................................................................................101
Mapping Bones to Frames............................................................................................................102
Manipulating the Skinned Mesh...................................................................................................103
Updating the Skinned Mesh.........................................................................................................104
Rendering the Skinned Mesh.......................................................................................................106
Check Out the Demo...........................................................................................................................106
Chapter 5: Using Key−Framed Skeletal Animation...................................................................................108
Using Key−Framed Skeletal Animation Sets.....................................................................................108
Using Keys in Animation...................................................................................................................109
Working with the Four Key Types.....................................................................................................110
Reading Animation Data from .X Files..............................................................................................112
Matching Animations to Bones..........................................................................................................119
Updating Animations..........................................................................................................................121
Obtaining Skeletal Mesh Data from Alternative Sources...................................................................122
Check Out the Demos.........................................................................................................................123
Chapter 6: Blending Skeletal Animations...................................................................................................125
Overview.............................................................................................................................................125
Blending Skeletal Animations............................................................................................................125
Combining Transformations...............................................................................................................126
Enhancing Skeletal Animation Objects..............................................................................................127
Check Out the Demo...........................................................................................................................132
Chapter 7: Implementing Rag Doll Animation...........................................................................................134
Overview.............................................................................................................................................134

Creating Dolls from Characters..........................................................................................................134
Working with Rigid−Body Physics....................................................................................................137
Creating a Rigid Body..................................................................................................................138
Positioning and Orienting Your Rigid Bodies.............................................................................140
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Table of Contents
Chapter 7: Implementing Rag Doll Animation
Processing the Motion of Rigid Bodies........................................................................................143
Using Forces to Create Motion....................................................................................................150
Connecting Rigid Bodies with Springs........................................................................................151
Providing Collision Detection and Response...............................................................................154
Creating a Rag Doll Animation System.............................................................................................160
Defining the Rigid Body State.....................................................................................................160
Containing Bones.........................................................................................................................161
Creating the Rag Doll Controller Class........................................................................................162
Building Bone Data......................................................................................................................165
Computing the Bone Bounding Box............................................................................................166
Setting the Forces.........................................................................................................................169
Integrating the Bones....................................................................................................................170
Processing Collisions...................................................................................................................172
Enforcing Bone−to−Bone Connections.......................................................................................174
Rebuilding the Hierarchy.............................................................................................................175
Check Out the Demo...........................................................................................................................176
Part Four: Morphing Animation..................................................................................................................178
Chapter 8: Working with Morphing Animation.........................................................................................179
Morphing in Action............................................................................................................................179
Defining Source and Target Meshes............................................................................................180
Morphing the Meshes...................................................................................................................180

Building a Morphed Mesh through Manipulation..............................................................................182
Drawing Morphed Meshes..................................................................................................................185
Dissecting the Subsets..................................................................................................................185
Creating a Morphing Vertex Shader............................................................................................187
Check Out the Demos.........................................................................................................................190
Chapter 9: Using Key−Framed Morphing Animation...............................................................................192
Using Morphing Animation Sets........................................................................................................192
Creating .X Morphing Animation Templates.....................................................................................192
Loading Morphing Animation Data....................................................................................................194
Rendering the Morphing Mesh...........................................................................................................198
Obtaining Morphing Mesh Data from Alternative Sources................................................................201
Check Out the Demos.........................................................................................................................202
Chapter 10: Blending Morphing Animations..............................................................................................204
Blending Morphing Animations.........................................................................................................204
Using a Base Mesh in Blended Morphing Animation.................................................................205
Calculating the Differences..........................................................................................................205
Blending the Differences..............................................................................................................207
Building a Blending Morph Vertex Shader..................................................................................208
Using the Blending Morph Vertex Shader...................................................................................213
Check Out the Demos.........................................................................................................................215
Chapter 11: Morphing Facial Animation....................................................................................................216
The Basics of Facial Animation..........................................................................................................216
Blended Morphing Back in Action..............................................................................................216
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Table of Contents
Chapter 11: Morphing Facial Animation
Using Phonemes for Speech.........................................................................................................218
Building Facial Meshes......................................................................................................................220

Creating the Base Mesh................................................................................................................220
Creating Facial Expressions.........................................................................................................221
Creating Viseme Meshes..............................................................................................................223
Creating Animation Sequences...........................................................................................................225
Automating Basic Features..........................................................................................................225
Building Phoneme Sequences......................................................................................................226
Using an .X Parser for Sequences................................................................................................233
Playing Facial Sequences with Sound................................................................................................237
Using DirectShow for Sound.......................................................................................................238
Synchronizing Animation with Sound.........................................................................................239
Looping Sound Playback..............................................................................................................240
Check Out the Demo...........................................................................................................................241
Part Five: Miscellaneous Animation............................................................................................................243
Chapter 12: Using Particles in Animation...................................................................................................244
Working with Particles.......................................................................................................................244
Starting with the Basics................................................................................................................245
Drawing Particles with Quad Polygons........................................................................................246
Working with Point Sprites..........................................................................................................250
Improving Particle Rendering with Vertex Shaders.....................................................................253
Bringing Your Particles to Life...........................................................................................................260
Moving Particles Using Velocity.................................................................................................261
Using Intelligence in Processing..................................................................................................262
Creating and Destroying Particles................................................................................................263
Drawing Your Particles................................................................................................................264
Controlling Particles with Class.........................................................................................................267
Using the Emitter in Your Project......................................................................................................270
Creating Particle Engines in Vertex Shaders......................................................................................270
Check Out the Demos.........................................................................................................................271
Chapter 13: Simulating Cloth and Soft Body Mesh Animation................................................................273
Simulating Cloth in Your Projects......................................................................................................273

Defining Cloth Points and Springs...............................................................................................274
Obtaining Cloth Data from Meshes..............................................................................................275
Applying Force to Create Motion................................................................................................278
Rebuilding and Rendering the Cloth Mesh..................................................................................286
Restoring the Original Mesh........................................................................................................287
Adding More Springs...................................................................................................................288
Loading Mass and Spring Data from .X.............................................................................................289
Building an .X Parser for Cloth Data...........................................................................................290
Working with Collision Detection and Response...............................................................................292
Defining Collision Objects...........................................................................................................292
Detecting and Responding to Collisions......................................................................................295
Creating a Cloth Mesh Class..............................................................................................................298
Using Soft Body Meshes....................................................................................................................307
Reverting a Soft Body Mesh........................................................................................................307
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List of Sidebars
Chapter 1: Preparing for the Book
Programs on the CD

Chapter 2: Timing in Animation and Movement
Programs on the CD

Chapter 3: Using the .X File Format
Programs on the CD

Chapter 4: Working with Skeletal Animation
Programs on the CD

Chapter 5: Using Key−Framed Skeletal Animation
Programs on the CD

Chapter 6: Blending Skeletal Animations
Programs on the CD

Chapter 7: Implementing Rag Doll Animation
Programs on the CD

Chapter 8: Working with Morphing Animation
Programs on the CD

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Chapter 9: Using Key−Framed Morphing Animation

Chapter 9: Using Key−Framed Morphing Animation
Programs on the CD

Chapter 10: Blending Morphing Animations
Programs on the CD

Chapter 11: Morphing Facial Animation
Programs on the CD

Chapter 12: Using Particles in Animation
Programs on the CD

Chapter 13: Simulating Cloth and Soft Body Mesh Animation

Programs on the CD

Chapter 14: Using Animated Textures
Programs on the CD

346