Web3D

1
Web3D

• Jyun-Ming Chen
• Fall 2001

2
Contents

• Definitions, components
• Examples
• Task breakdown
• Survey of available technologies
• Recommended platform
• Details

3
Components of Web 3D

• WWW browser
• Display
• of 3D objects/scene
• Interactive
• Different modes of GUI
• File I/O
• Most do NOT have READ-ONLY

4
Tasks of Web3D

• Scene composition
• Static, dynamic
• Geometry, material, texture,
• Authoring interface
• Internal within 3D scene
• External w/ other components of the page

• Approach
• VRML(Plugin) EAI
• Pure Java
• Proprietary
• Advanced
• Self-defined data type
• C/S (client/server)
• NVE (networked virtual environment)
• Integrate with other API

5
(No Transcript)
6
(No Transcript)
7
Eyematic (plugin required)
8
Web3D.ORG

• Organization for setting up standards
• Sources
• Technology comparison

• (www page)

9
Course Rundown

• Introduce VRML 97
• Focus on core nodes
• Emphases
• Internal Scripting w/ JS
• Prototype the proper use of
• A preview of future
• Blaxxun3d
• X3d
• Applications

10
VRML97

• Shapes, geometry, appearance
• Animation, sensor, geometry
• Texture, light, environment
• Scripts, prototypes

• Follow SIGGRAPH98 course slides
• Supplement by examples
• Sourcebook
• Self-testing
• Spec details
• Take a look at cheat sheet
• In-class demonstration using VRMLpad

11
On Homework Submission

• Set up your website
• I will examine your work on due date/time
• Make sure it works under IE/Blaxxun
• Keep wrl unzipped

• Details of the assignment will be posted on
  website
• Make sure youve implemented every required
  feature

12
X3D

• Based on VRML97
• Core part concepts
• Low-footprint engine
• (java applet, small browser plugin)
• Address limitation of s/w renderer not capable
  of dealing with all details of VRML97 lighting
  model
• Support a simplified but powerful API similar to
  EAI

• Shape
• IndexedFaceSet, IndexedLineSet, PointSet
• creaseAngle
• 0, 3.14
• Convex TRUE
• Appearance
• ImageTexture

13
X3D (cont)

• Light
• DirectionalLight
• No color (only white lite),
• ambientIntensity

14
http//www.virtualrealms.com.au/vrml/tute01/tutori
al.htm