[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: [SUMMARY #1] Why is there little usage of XML on the 'vi
Len\ said: > > 2D and 3D are essential. X3D has a 2D layer for that. The question I > have is do you want the semantics to be in a separate class that talks > to the 3D/2D nodes, or built into them? In X3D, you can add classes > for that, then use the rest of the internal message machinery. > Communication with the X3D browsers is easier via the SAI API that > replaced the EAI. > I think that semantics on rendering engines would be optional or maybe installed as separated layer. Take the case of 2D, when prsenting information online one needs the additional semantics for search engines for instance, however when preparing a XSL-FO for printing any distinction between a <h3> and a <fo:block ...> vanishes. I think that some people think that an underlying 2D-3D engine or format may be fundamental. If i understand you, you are popularizing a basic 3D format (based in X3D) with posibilities a 2D layer (of course!) where semantic information would be stored. I know nothing of X3D therefore let me use generic thought (of course correct me when needed!) Your idea may be <X3D-object metadata="value">graphic-info-here</X3D-object> or <X3D-object <metadata>metadata-info</metadata>graphic-info-here</X3D-object> or something similar. I do not think that a rendering engine may be the "host" layer. I think that host may be a "virtual machine" (VM) able to process/transform content-oriented datument generating output. The VM may be in a original "vacuum state" would understand the semanitcs on the fly thanks to stylesheets linked to the original datument. This is not like the Java-Plugin approach; it is more like XSLT or MacroTeX approach. In a chemical notation ;-) Datument + STS_1 + VM ==> 2D visual rendering Datument + STS_2 + VM ==> (2+1)D visual rendering Datument + STS_3 + VM ==> 3D visual rendering (hologram) or sculpting (this is useful in enginnering, art) Datument + STS_4 + VM ==> Aural rendering Datument + STS_5 + VM ==> Search engine query Datument + STS_6 + VM ==> symbolic computation Datument + (STS_2 + STS_9) + VM ==> (2+1)D visual rendering + metadata (e.g. useful when visualizing _and_ understanding molecules: e.g. charge distributions, bond indices). ... I am following this basic design in my non-XML approach, but since it is in so early state of development i cannot offer serious thouths not samples or code still to this list. > len > Juan R. Center for CANONICAL |SCIENCE)
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