Topic : The VGA Training Program
Author : Grant Smith
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   pal (loop1,Pall[loop1,1],Pall[loop1,2],Pall[loop1,3]);


void RestorePallette() {

  for(int loop1=0; loop1<255; loop1++)


  In closing

Well, there are most of those origional questions answered ;-) The following
sample program is quite big, so it might take you a while to get around it.
Persevere and thou shalt overcome. Pallette manipulation has been a thorn
in many coders sides for quite some time, yet hopefully I have shown you
all how amazingly simple it is once you have grasped the basics.

I need more feedback! In which direction would you like me to head? Is there
any particular section you would like more info on? Also, upload me your
demo's, however trivial they might seem. We really want to get in contact
with/help out new and old coders alike, but you have to leave us that message
telling us about yourself and what you have done or want to do.


P.S. Our new demo should be out soon ... it is going to be GOOOD ... keep
     an eye out for it.

          [ And so she came across him, slumped over his keyboard
            yet again . 'It's three in the morning' she whispered.
            'Let's get you to bed'. He stirred, his face bathed in
            the dull light of his monitor. He mutters something.
            As she leans across him to disconnect the power, she
            asks him; 'Was it worth it?'. His answer surprises her.
            'No.' he says. In his caffiene-enduced haze, he smiles.
            'But it sure is a great way to relax.'                  ]
                                           - Grant Smith
                                              Tue 13 July, 1993
                                               2:23 am.

See you next week!
   - Denthor

--==[ PART 3 ]==--

[Note: things in brackets have been added by Snowman.  The original text
has remained mostly unaltered except for the inclusion of C++ material]


Greetings! This is the third part of the VGA Trainer series! Sorry it
took so long to get out, but I had a running battle with the traffic
department for three days to get my car registered, and then the MailBox
went down. Ahh, well, life stinks. Anyway, today will do some things
vital to most programs : Lines and circles.

Watch out for next week's part : Virtual screens. The easy way to
eliminate flicker, "doubled sprites", and subjecting the user to watch
you building your screen. Almost every ASPHYXIA demo has used a virtual
screen (with the exception of the SilkyDemo), so this is one to watch out
for. I will also show you how to put all of these loose procedures into

If you would like to contact me, or the team, there are many ways you
can do it : 1) Write a message to Grant Smith in private mail here on
                  the Mailbox BBS.
            2) Write a message here in the Programming conference here
                  on the Mailbox (Preferred if you have a general
                  programming query or problem others would benefit from)
            3) Write to ASPHYXIA on the ASPHYXIA BBS.
            4) Write to Denthor, Eze or Livewire on Connectix.
            5) Write to :  Grant Smith
                           P.O.Box 270 Kloof
            6) Call me (Grant Smith) at 73 2129 (leave a message if you
                  call during varsity)
NB : If you are a representative of a company or BBS, and want ASPHYXIA
       to do you a demo, leave mail to me; we can discuss it.
NNB : If you have done/attempted a demo, SEND IT TO ME! We are feeling
        quite lonely and want to meet/help out/exchange code with other demo
        groups. What do you have to lose? Leave a message here and we can work
        out how to transfer it. We really want to hear from you!

  Circle Algorithim

You all know what a circle looks like. But how do you draw one on the

You probably know circles drawn with the degrees at these points :

                        270 ----+---- 90

Sorry about my ASCII ;-) ... anyway, Pascal and C++ don't work that way ...
they work with radians instead of degrees. (You can convert radians to
degrees, but I'm not going to go into that now. Note though that in Pascal
and C++, the circle goes like this :

                        180 ----+---- 0

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