M2A3 Bradley Fighting Vehicle Model

1
M2A3 Bradley Fighting Vehicle Model

• LTC Rene Burgess
• Final Project, MV4204
• 24 MAR 03
• Briefing Models available online at
  http//fp2k.redshift.com/rayburge3/x3d.htm

2
Model Production

• Base M2A3 Model
• Improvements
• Drive System
• Track
• Road Wheels
• Drive Sprockets
• Articulation
• Turret
• Gun
• TOW
• Back Ramp
• Appearance Items
• Bolts
• Handles
• Crew Door
• Text
• Issues/Lessons Learned

3
Base Model

• Vertices for most of the Model extracted from
  standard Army M2A3 model in .hps format (which
  was extracted from a .flt format model)
• This gave the physical outline of the outside of
  the vehicle.and a bitmap texture of a BFV to
  overlay on the outline.
• Rather than overlay the picture, instead built a
  model based on color and physical geometries for
  better extensibility.

4
Drive System Improvements

• Tracks
• Both double/single track sections, then rotated/
  repeated to complete track
• Road Wheels
• Built based on photos using simple geometries
  and extrusions

5
Drive System Improvements (Cont.)

• Drive Sprockets
• This was hard.tried a couple different methods
  before deciding to use repeating, extended/
  translated/ rotated spheres to create drive
  sprocket

6
Articulation

• Turret (Around)
• Gun (Up and Down)
• TOW (Up Down)

7
Articulation (Cont)

• Back Ramp
• (Up and Down)
• Easier to use two TouchSensors than to do a
  JavaScript boolean (like double click)

8
Appearance Items

• Skirt Handles
• Bolts

9
Appearance Items (Cont)

• Crew Door
• Text

10
Lessons Learned

• Texture Mapping
• CylinderSensor
• JavaScript Booleans
• ClickSensor
• Model Conversion Hiccups
• Polygons IndexedFaceSets
• Need for Visual Modeling/Edit Tool
• Right Hand, Right Hand, Right Hand.
• Internet Explorer v. Netscape during Interpolation

11
Conclusion

• Adequate M2A3 Bradley Fighting Vehicle completed
  / prepared for addition to SAVAGE Library
• Process of building this model reinforced lessons
  of X3D design
• Posting models on web good way to check
  functionality/ extensibility on other PCs