Re: 3d programming

Article View: comp.lang.pascal.borland

Article #46

Back to comp.lang.pascal.borland Previous Next

#46

From: TheAnalyst
Date: Wed, 14 Feb 1996 05:01

36 lines
1781 bytes

"Christopher H. Clark" <chc104@psu.edu> wrote:

>Jonathan Cohen wrote:
>> 
>> In article <3118310E.52F@psu.edu>, Christopher H. Clark <chc104@psu.edu> wrote:
>> >Actually, you only need 2 points to define a plane: a point on the plane and
>> >a normal vector.
>> 
>> Sorry to quibble, but...
>> 
>>    A VECTOR IS NOT A POINT!!!!
>> 
>> Now back to our regular program.

>Points are vectors.

I may not be a 3d programmer but I do know that a point is NOT a vector.

Definition of Vector from my Physics book:
	VECTOR: Quantity having both magnitude (size [meaning speed]) and direction.

In other words a point is not a vector and a vector is not a point.  Also, two
points do not necessarily make a vector.  A vector is a point that *points*
somewhere.


--
Why should I hide my domain?  I am doing nothing illegal.

NewBies, to find information go to:
        pubweb.nexor.co.uk/public/cusi/cusi.html
pick a search engine, preferably Lycos
and use common sense in the key words.
Remember hackers don't need this kind of common sense help.

NEVER post underground URLz or FTPz.

Technical Details

Message-ID: <4frlln$lp5@dfw.nkn.net>

Path: arc1-ca.pugleaf.net!dfw.nkn.net!usenet

References:

<4f3od9$2jg@zeus.tcp.co.uk> <jderrick-0502961551360001@slip037.csc.cuhk.hk> <3118310E.52F@psu.edu> <4fiuh2$qrj@fulton.cs.unc.edu> <311E38D7.71BC@psu.edu>

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!dfw.nkn.net!usenet
From: TheAnalyst@Nfo.Org
Newsgroups: comp.lang.pascal.borland,comp.lang.pascal.mac,comp.lang.pascal.ansi-iso,comp.lang.pascal.misc,comp.sys.amiga.programmer,comp.graphics.algorithms,comp.os.ms-windows.programmer.graphics,comp.sys.amiga.graphics
Subject: Re: 3d programming
Date: Wed, 14 Feb 1996 05:01:25 GMT
Organization: National Knowledge Network
Message-ID: <4frlln$lp5@dfw.nkn.net>
References: <4f3od9$2jg@zeus.tcp.co.uk> <jderrick-0502961551360001@slip037.csc.cuhk.hk> <3118310E.52F@psu.edu> <4fiuh2$qrj@fulton.cs.unc.edu> <311E38D7.71BC@psu.edu>
NNTP-Posting-Host: fw52.fastlane.net
X-Newsreader: Forte Free Agent 1.0.82

Reply to Parent Message