extensible 3d x3d graphics technical overview n.
Skip this Video
Loading SlideShow in 5 Seconds..
Extensible 3D (X3D) Graphics Technical Overview PowerPoint Presentation
Download Presentation
Extensible 3D (X3D) Graphics Technical Overview

Extensible 3D (X3D) Graphics Technical Overview

230 Views Download Presentation
Download Presentation

Extensible 3D (X3D) Graphics Technical Overview

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Extensible 3D (X3D) GraphicsTechnical Overview Don Brutzman Web3D 2007, Perugia Italy, 15 April 2007 Naval Postgraduate School Monterey California USA

  2. Web3D 2007 Symposium • Sunday-Thursday 15-19 April 2007 • University of Perugia, Umbria Italy • Sponsored by ACM SIGGRAPH in cooperation with EuroGraphics and Web3D Consortium •

  3. Session 1: X3D Introduction • X3D Software Development Kit (SDK) • Installing X3D-Edit and Examples • Installing Xj3D and an X3D Plugin • History, Goals, Development, Capabilities • Chapter 1: Technical Overview • X3D for Web Authors, Don Brutzman and Leonard Daly, Morgan Kaufmann Publishers • Current Working Groups and Activities

  4. Session 2: X3D Examples • Chapter 2: Geometry 1, Primitive Shapes • Chapter 3: Grouping • Chapter 4: Viewing and Navigation • Chapter 5: Appearance, Materials, Textures • Chapter 6: Geometry 2, Points Lines Polygons • Chapter 7: Event Animation • Chapter 8: User Interactivity

  5. Session 3: X3D Examples • Chapter 9: Event Utilities and Scripting • Chapter 10: Geometry 3, Geometry2D • Chapter 11: Lighting and Environment • Chapter 12: Environment Sensors • Chapter 13: Geometry 4, Triangles • Chapter 14: Prototypes • Chapter 15: Metadata (online only)

  6. Session 4: Scene Access Interface (SAI) • Alan Hudson, Yumetech • Installing Xj3D • Examples directory • Running in Netbeans

  7. Introduction Topics • X3D-Edit, Xj3D, Plugin Installation • X3D Past • X3D Present • X3D Future • X3D Earth

  8. X3D Software Development Kit (SDK) • Applications • Examples • Resources • Released annually at SIGGRAPH • Available in bulk to Web3D members • Time for 2007 contributions is now!

  9. SDK screen snapshot

  10. Contributing to 2007 X3D SDK • Become a Web3D Consortium member • • Tell Jeff Weekley NPS • Get on mailing list • Send or upload contributions

  11. Xj3D Features, Installation • Standalone X3D application browser • Converter to/from various X3D formats including .wrl VRML97 • Open source Java • Example implementation of X3D Standard • Designers, primary contributors Yumetech

  12. Installing an X3D plugin • Media Machines Flux: windows, open source • • CRC FreeWrl: Mac, open source • http:// • BitManagement Contact • http: • Octaga • http:

  13. X3D-Edit • Simple NPS tool for teaching, authoring X3D • Thank you IBM for run-time license to use Xeena API builder freely with X3D-Edit • Helped develop X3D specification by showing X3D mappability to VRML • Much of X3D-Edit automated by XML itself • Document Type Definition (DTD), tooltips, conversion stylesheets for .wrl .x3dv .html

  14. Context-sensitive, self-validating, multi-lingual editing tools X3D-Edit complete interface

  15. X3D-Edit 3.2 design in progress • Scene-graph centric: XML tree and text editing • Not an immersive 3D authoring tool • Complete rebuild using Netbeans Platform  • Pure Java, cross-platform, plugin, deployable • Embedded Xj3D views, node-specific helpers • Open source, tooltips, internationalization • Schedule: alpha SIGGRAPH, β December 2007

  16. X3D-Edit 3.2 sneak peak 1

  17. X3D-Edit 3.2 sneak peak 2

  18. Applications Authoring Tools Authoring Support Books Conversions Examples License PowerPoint References Transitional DTD Contact X3D Help

  19. Authoring Coordinate Systems Credits Dates Help HTML Images Inlines/Prototypes License meta Tags Naming Conventions Scripts URL Links Viewpoints X3D Scene Authoring Hints

  20. X3D tooltips in English

  21. X3D tooltips in Italiano

  22. X3D Past as prologue

  23. Extensible 3D (X3D) Graphics has steadily progressed since work first began a decade ago. • Wow!  • Many other commercial companies have tried and failed to “own” 3D graphics on the Web. • The Web3D-supported community process to build and extend X3D works, sustainably. • Can we learn from both successes and failures?

  24. • The Web3D Consortium is the public-private partnership of industry, agencies, universities and individuals that has "kept the flame alive" and made X3D what is today. • How to accomplish all of this wasn’t clear as we proceeded. Structuring for success let us work together through dialog + collaboration.

  25. Today’s page

  26. Community rules • Thanks to steady innovation by Web3D members, new X3D features continue to evolve and grow into great capabilities. • Lots of working groups have formed, worked, faded, regrouped and succeeded. • Web3D members (and big www-vrml list too) keep these successes building, year after year

  27. ISO • Implementation, evaluation and then formal review by the International Organization for Standardization (ISO) have made X3D an approved standard for real-world use, both on and off the Web. • Experts from 12-15 nations review our specs • Immediate adoption by other governing bodies helps to increase deployment

  28. W3C • Further collaboration by Web3D Consortium with the World Wide Web Consortium (W3C) has made X3D a "first-class citizen" on the Web, providing excellent (and growing) interoperability with other XML standards. • More work (especially more volunteers) needed, some excellent individual opportunities here.

  29. Intellectual Property Rights (IPR) • Web3D and W3C have similar policies • Any known patented technology must be declared by members prior to consideration by working groups • Any patented technology contributions must be licensed on a royalty-free (RF) basis for inclusion in an openly used Web standard • Caveat: any legal problem can be solved, but only in advance

  30. Open Source • Open for any use, without license fees • Free = freedom to innovate • Not necessarily free cost (unlike “free beer”) • Common shared example implementation(s) • Not a reference implementation – the specification/standard hopefully provides that • Can provide a self-sustaining business model for continued activity, improvement • Can break logjams when company participants can’t resolve technical issues

  31. Digital rights management • X3D’s XML and Compressed Binary encodings allow use of W3C’s Security recommendations • XML Encryption • XML Digital Signature (for authentication) • Public key infrastructure • DRM is now feasible • More uses than Hollywood-commercial exist • See Sun’s DReaM project

  32. IPR summary • Open standards & open source: part of success • Complements legacy approaches, traditional “hierarchical stovepipes,” provides stability • Win-win approach for government, industry • Both wins are needed for program success • Standards organizations, IPR agreements provide a stable playing field for long term • Welcome to another active playing field!

  33. X3D Present Steady daily progress

  34. Our approach • Demonstrate application value of new technology • Collaborate, implement, evaluate, report, repeat Key Technologies • Extensible Markup Language (XML) • Validatable data, binary compression • Web Services for message exchange • Extensible 3D (X3D) Graphics • ISO-approved interactive visualization

  35. XML is for structuring data XML looks a bit like HTML XML is text, but isn't meant to be read XML is verbose by design XML is a family of technologies XML is new but not that new XML leads HTML to XHTML XML is modular XML is basis for RDF and the Semantic Web XML is license-free, platform-independent and well-supported Extensible Markup Language XML in 10 Points 400+ member companies & institutions in World Wide Web Consortium (W3C) already understand the business case

  36. XML Elements and Attributes • Elements correspond to X3D nodes • Attributes correspond to X3D simple-type fields • Parent-child relationships define containerField • Validatable XML using X3D DTD, schema

  37. 3D Graphics Education • 3D doesn’t have to equal “programming” • We are able to teach X3D to students from any major, without programming experience • Making X3D accessible to Web authors should • mainstream X3D usage • open the flood gates

  38. X3D Profiles for Extensibility • Different levels of content complexity • Browsers can support increasing levels of capability • Authors can use the proper palette for intended delivery

  39. Family of X3D specifications • Abstract specification describes “how it works” • Equivalent encodings • XML .x3d, ClassicVRML .x3dv, Binary .x3db • Scene Access Interface (SAI) • Consistent programming in EcmaScript, Java

  40. X3D Specifications honeycomb diagram X3D Specification itself is componentized and extensible

  41. Example X3D browser architecture • A particular strength of X3D is that it does not tell software implementers exactly how to achieve results • Nor is a single “reference implementation” used • Instead innovation is allowed • Results are often both similar and different • Following diagram shows “typical” architecture

  42. Example X3D browser architecture

  43. X3D Compressed Binary Encoding • Two types of compression for .x3db encoding • XML-centric ISO Fast Infoset • Geometry-centric for coplanar polygons, quantization of points, colors & normals, etc. • Java3D algorithms are default • Royalty free for use with X3D • Other uses – please contact Sun Microsystems • Alternate geometry compression can be used • Sample implementation: Xj3D

  44. X3D Binary Encoding • NPS has implemented Canonical X3D algorithms in open-source Java

  45. XML and Web are out there.. • Note many World Wide Web Consortium (W3C) Recommendations align directly with X3D • You get these X3D capabilities whether using XML encoding or not  • We’re aligned with common enterprise data processes, so more usage is inevitable

  46. XML and Web… 2 • Further uses already in play • XML tooltips in multiple languages, displays • Content catalogs built directly from metadata provided .x3d scenes • Pretty-print XHTML annotating a scene • SVG drawings for crossSection diagrams • Building custom programming interfaces • Validation detects many errors, prevents rust

  47. Telling the story.. • Marketing hasn’t quite reached ignition yet… • … though lots of work continues to proceed • … so what does it take to get to the next level? • Nothing succeeds like success. We have many. • It is sufficient to keep succeeding (at least for our NPS group) because that enables us to continue succeeding on new projects.

  48. Logo development • The quest to “symbolize the story” continues… • Credits: J. Eric Mason, 3DLabs, Viveka Weiley

  49. X3D Future Day by day progress all adds up

  50. X3D Amendments 1, 2 and 3 • Meaning <X3D version=“3.1”/> 3.2 and 3.3 • Lots of great work coming to fruition! • Specification-building mantras are unchanged: • Implement and evaluate • One implementation to start the process, at least 2 (and some open source) to finish • Companies, community have steady path to success