X3D and HTML5 Summary

• Family of X3D Specifications;

• • X3D Abstract Specification describes basic functionality
  • XML, ClassicVRML, and Compressed Binary Encoding
  • Application Programming Interfaces (APIs) Ecmascript (Javascript) and Java

• Relationships between scene graphs, APIs and render layers;

• • Scene graphs are high-level declarative models about how geometry is constructed, colored and animated; these can be expressed as an XML tree
  • APIs are mid-level libraries for programmers to create imperative source code about geometry and animation
  • Render layers are low-level software libraries that expose the functionality of graphics hardware (e.g. OpenGL, DirectX, etc.)

• Similarities between MathML, SVG, and X3D;
  • MathML describes mathematical expressions and then presents a rendering of them
  • Scalable Vector Graphics (SVG) describes and presents renderings of 2D shapes

• Simple X3D example and HTML5 examples; (how current integration looks like via object model then to html5)
  • X3D scene as external reference
  • X3D as embedded object;
  • HTML5 with embedded x3d as mixed namespaces;
  • Template for demo = html5+x3d event passing connections.

• Recommendations for html5 specification.