[x3d-public] X3D JSON Schema Updates: determining event constraints for SFTimedurations and timestamps

[John Carlson]

From: Don Brutzman
>>     Extra-credit issues:
>>     a. generating X3DObjectModel-3.3.xml files for each X3D version
>>     http://www.web3d.org/specifications/X3DObjectModel-3.3.xml

> That's your task, Don, or someone who is familiar with your builds/Xslt.

OK, can do... worked today on the build scripts and generation stylesheet.

Have renamed several files for better clarity (earlier deferred with Roy) and improved the processing, creating a new object-model file directly, version by version, from each corresponding X3D schema.

And so added corresponding matches as follows:

	http://www.web3d.org/specifications/X3dUnifiedObjectModel-4.0.xml (experimental)
	http://www.web3d.org/specifications/X3dUnifiedObjectModel-3.3.xml (primary)
	http://www.web3d.org/specifications/X3dUnifiedObjectModel-3.2.xml (strict backwards compatibility)
	http://www.web3d.org/specifications/X3dUnifiedObjectModel-3.1.xml (strict backwards compatibility)
	http://www.web3d.org/specifications/X3dUnifiedObjectModel-3.0.xml (strict backwards compatibility)

All of these links are now refreshed, committed and online via

	X3D Unified Object Model (X3DUOM)
	http://www.web3d.org/specifications/X3DUOM.html

Found a problem with X3dUnifiedObjectModel-3.0.xml.  It’s missing X3DVertexAttributeNode abstract node type , or fields which use it should be redone.

Also, ConcreteNode FogCoordinate is missing, or fields which use it should stop referencing it.

Added both, then the X3DUOM 3.0 converted to JSON schema 3.0.  Will send in next message for validation.

$ grep X3DVertexAttributeNode /c/x3d-code/www.web3d.org/specifications/*nified*.*|grep Abstract
/c/x3d-code/www.web3d.org/specifications/X3dUnifiedObjectModel-3.1.xml:      <AbstractNodeType name="X3DVertexAttributeNode">
/c/x3d-code/www.web3d.org/specifications/X3dUnifiedObjectModel-3.2.xml:      <AbstractNodeType name="X3DVertexAttributeNode">
/c/x3d-code/www.web3d.org/specifications/X3dUnifiedObjectModel-3.3.xml:      <AbstractNodeType name="X3DVertexAttributeNode">
/c/x3d-code/www.web3d.org/specifications/X3dUnifiedObjectModel-4.0.xml:      <AbstractNodeType name="X3DVertexAttributeNode">
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