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Subject: Re: [office-comment] draw:extrusion-first-light-harsh (ODF all versions)

But I bet its not used in the domain of Computer Graphics since 1895. So
could you please explain how a "A search of Google books" since 1895
helps implementors implementing the attribute in question?


robert_weir@us.ibm.com wrote:
> A search of Google books shows that the term "harsh lighting" has been in 
> constant use since at least 1895, with the same sense with which we use it 
> today.  I would take this as being sufficient evidence of the term being 
> commonly known.
> http://books.google.com/books?q=%22harsh+lighting%22&btnG=Search+Books
> -Rob
> From:
> Patrick Durusau <patrick@durusau.net>
> To:
> Alex Brown <alexb@griffinbrown.co.uk>
> Cc:
> office-comment@lists.oasis-open.org
> Date:
> 04/24/2009 07:30 AM
> Subject:
> Re: [office-comment] draw:extrusion-first-light-harsh (ODF all versions)
> Alex,
> Alex Brown wrote:
>> 18.162:
>> ----b
>> The draw:extrusion-first-light-harsh attribute specifies if the first
>> light is harsh.
>> ----e
>> It's almost poetic, but I'm not sure a clean-room developer is going to
>> be able to implement it.
>> Please define what constitutes "harsh" light.
> This raises an interesting question, your other comments are noteworthy 
> as well but this one is particularly so.
> I draw you attention to Annex D of Part 2 of the ISO/IEC Guidelines 
> which reads in part:
>> Any term which is not self-explanatory or commonly known and which can 
>> be differently
>> interpreted in different contexts shall be clarified by defining the 
>> relevant concept.
> In this particular context, the question is to who would the definition 
> of "harsh" lighting be commonly known?
> I certainly don't know what it means but then I am not the sort of 
> person who would be implementing the graphics portion of ODF 1.2.
> The term "harsh" does not appear in "Computer Graphics: Principles and 
> Practice" Second Edition in C by Foley, et. al., but I cite for your 
> amusement a Photoshop tutorial that purports to be about "harsh" 
> lighting: http://www.rnel.net/tutorial/Photoshop/8263.
> Personally I don't think I know any more about "harsh" lighting after 
> reading the "tutorial" other than it is "commonly seen in urban portrait 
> or fashion photography." I am not sure that would be a helpful 
> definition. ;-)
> There are standards, X3D comes to mind, that have lighting definition 
> systems. See www.web3d.org.
> All of this is to suggest that perhaps the term "harsh" lighting has a 
> common interpretation in the graphic community that isn't known to those 
> of us more at home in the markup community.
> Speaking strictly for myself personally, I am hopeful that in a future 
> release ODF will adopt by reference the current version of X3D. One of 
> the hallmarks of standards (at least to me), being their use of other 
> standards.
> Hope you are looking forward to a great weekend!
> Patrick

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