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From: u906400@BRUNY.CC.UTAS.EDU.AU (Roger Scott)
Newsgroups: comp.graphics
Subject: How do I draw a perspective view?
Message-ID: <9106010027.AA01356@bruny.cc.utas.edu.au>
Date: 1 Jun 91 15:27:53 GMT
Sender: rwh@ucbvax.BERKELEY.EDU
Lines: 21

Could somebody please explain to me how to take a point (x,y,z) in space and
map it onto a screen as a single point perspective view in (x,y)?  I've had
a look through the books, but I can't follow what's happening.  It is for an
assignment and so far I can get it to draw a cube properly, but when I throw
anything more difficult at the program  the lines seem to go everywhere. I
am currently using
	xp = (x/((z/d)+1)) & yp = (y/((z/d)+1)) where d is the distance between
						the point and the origin.
Is this right?  I don't think it is or otherwise I would have figured it out
by now.  Any help appreciated.

	Roger.

*****************************************************************
*   Roger Scott             3rd Year Computer Science           *
*                           University Of Tasmania, AUSTRALIA   *
* Internet/AARnet  u906400@bruny.cc.utas.edu.au  (Try here 1st) *
*             or   ap351@cleveland.freenet.edu                  *
*             or   Roger.Scott@p15.f206.n670.z3.fidonet.org     *
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