Table of Contents
Geometry at Work: Open Issues Encountered in Real Applications using BRL-CADTM
Why We Model
Modeling is Only One Part of the Process
Modeling Means Different Things...
The Simulation Challenge
Meeting the Simulation Challenge
Two Types of Simulation
OUTLINE
I. BRL-CADTM and Targets
BRL-CADTM Primitive Solids
BRL-CADTM Primitive Solids
CSG Boolean Operations
Hierarchical Database Organization
A Medium-Resolution BRL-CADTM Database
Corps Command Post
Library of Existing BRL-CADTM Geometry
One Geometry, Multiple Uses
Ray Tracing
Evaluating Boolean Expressions in CSG
II. Shooting Bullets
Vulnerability/Lethality Analysis Process
Computing Component Damage (Level 1 to Level 2 Mapping)
Ray-tracing Through a Target
Penetration Results
Behind-Armor Debris (Flash X-Ray)
Spall: a Secondary Damage Mechanism
Mapping from Damage to Capability (L2->L3)
Is a Ray a Good Approximation for a Fragment?
In General: No!
Beam or Cone Tracing?
A Ray Slipping Through Complex Geometry
A Beam through Complex Geometry
Objects in the Beam
A Simplified View of the Relationships
Relations Along a Ray
Difficulties with Cone-tracing
A Plea!
Our Short-Term Strategy
III. Making Pictures
What is PST?
Application of PST
Paint-the-Night
SWISS
A Grand-Challenge Computing Problem
Ray-Tracing for Image Synthesis
Advantages of a Ray-Tracing SIG
CSG Rendering Advantages
Cruise Missile Shadow
Target Geometry Complexity
Complex Geometry Today
Procedural Grass
Ray-Traced Atmosphere
The Blue Hills of Fort Hunter-Liggett
Hyper-Spectral: The Power of a Single Pixel
Open Issue: Representing Reflectance
Backplane Philosophy
PST Implementation Goals
Required Backplane Features
PST Simulation with RT
PST Simulation with PTN
Independent Time Scales
Hardware Environment
Ft. Knox Application of PST
The Ft. Knox Experiments
Real-Time Performance!
Data Structures versus The Hardware
Walking a Binary Tree
A Plea to the Research Community
Example of an Alternative: NUGrid
Some Final Thoughts
Acknowledgements
Who is this MUUSS Fellow, Anyway?
Peer Assessment of BRL-CAD?
Data Storage Comparison
|
