1. What is the syntax of RiBlobby() ?
2. What is the "NDC" space ?
3. What ‘SubdivisionMesh’ algorithms have been copyrighted (and
therefore cannot be used by other renderers) by Pixar ?
Thanks in advance..
N.Y.
Sent via Deja.com http://www.deja.com/
Before you buy.
nass…@hotmail.com wrote:
> 1. What is the syntax of RiBlobby() ?
there should be an app. note with 3.9 that describes it all.
> 2. What is the "NDC" space ?
"Normalized Device Coordinates", basically the ‘texture space’ of the
screen 0.0-1.0 in each direction (regardless of aspect ratio) with the
origin in the upper left (I think).
In article <8j342l$9k…@nnrp1.deja.com>, <nass…@hotmail.com> wrote:
>3. What ‘SubdivisionMesh’ algorithms have been copyrighted (and
>therefore cannot be used by other renderers) by Pixar ?
None. You can’t copyright algorithms. You can, unfortunately,
seem to patent them these days.
For Pete’s sake, don’t trust USENET for anything as important
as judging what patents you may be infringing. You can do a
full-text patent search at:
http://www.patents.ibm.com/
Search for "subdivision surface" (the Pixar patent is the first one
listed). This web site will sell you the full text of patents in PDF
for, I think, $3 each.
Also, a bit of advice about reading patents: don’t make any
assumptions based on the abstracts — they can be notoriously
misleading. Read the full text very carefully. Only the actual list
of claims is what counts, and sometimes they are surprisingly more
narrow than common lore about the patents would have you believe.
– lg
–
Larry Gritz Pixar Animation Studios
l…@pixar.com Richmond, CA
In article <39577D71.D9FF1…@pixar.com>,
Doug Epps <d…@pixar.com> wrote:
> nass…@hotmail.com wrote:
> > 1. What is the syntax of RiBlobby() ?
> there should be an app. note with 3.9 that describes it all.
> > 2. What is the "NDC" space ?
> "Normalized Device Coordinates", basically the ‘texture space’ of the
> screen 0.0-1.0 in each direction (regardless of aspect ratio) with the
> origin in the upper left (I think).
I don’t have access to 3.9 documentation
Sent via Deja.com http://www.deja.com/
Before you buy.
>Search for "subdivision surface" (the Pixar patent is the first one
>listed). This web site will sell you the full text of patents in PDF
>for, I think, $3 each.
Patents can be got free from http://www.uspto.gov. No need to pay.
>Also, a bit of advice about reading patents: don’t make any
>assumptions based on the abstracts — they can be notoriously
>misleading. Read the full text very carefully. Only the actual list
>of claims is what counts, and sometimes they are surprisingly more
>narrow than common lore about the patents would have you believe.
If you would tell what you have patented, would everything become crystal
clear. Please.
Juhana
maj…@uta.fi (Juhana Sadeharju) writes:
<snip>
> >Also, a bit of advice about reading patents: don’t make any
> >assumptions based on the abstracts — they can be notoriously
> >misleading. Read the full text very carefully. Only the actual list
> >of claims is what counts, and sometimes they are surprisingly more
> >narrow than common lore about the patents would have you believe.
> If you would tell what you have patented, would everything become crystal
> clear. Please.
Larry hasn’t patented anything. He very wisely has avoided trying to
interpret either the content of Pixar’s patents or Pixar’s policy in
enforcing and licensing them.
Really, he just works there.
–
-Stephen H. Westin
Any information or opinions in this message are mine: they do not
represent the position of Cornell University or any of its sponsors.
In article <uituvckx5….@graphics.cornell.edu>,
Stephen H. Westin <westin*nos…@graphics.cornell.edu> wrote:
- Hide quoted text — Show quoted text -
>maj…@uta.fi (Juhana Sadeharju) writes:
><snip>
>> >Also, a bit of advice about reading patents: don’t make any
>> >assumptions based on the abstracts — they can be notoriously
>> >misleading. Read the full text very carefully. Only the actual list
>> >of claims is what counts, and sometimes they are surprisingly more
>> >narrow than common lore about the patents would have you believe.
>> If you would tell what you have patented, would everything become crystal
>> clear. Please.
>Larry hasn’t patented anything. He very wisely has avoided trying to
>interpret either the content of Pixar’s patents or Pixar’s policy in
>enforcing and licensing them.
>Really, he just works there.
I knew all this already, really! Now back to topic!
Juhana