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From: jturner@tartarus.uwa.edu.au (Joseph Turner)
Newsgroups: comp.sys.apple2.programmer
Subject: Re: Polygons in Quickdraw?
Date: 12 Apr 1996 16:05:28 GMT
Organization: The University of Western Australia
Lines: 86
Message-ID: <4klv08$ok4@styx.uwa.edu.au>
References: <4kj0jb$4pa@styx.uwa.edu.au>
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Joseph Turner (jturner@tartarus.uwa.edu.au) wrote:
:   Hello, I have got myself a bit of spare time, and I have decided to use 
: it get a little bit more IIgs programming knowledge.I recently was looking 
: at one of my friends programs(on an IBM..errrr) well anyway, he was using 
: Polygons. And from his program I can see the power and advantages of using 
: polygons, for example in 3d graphics. I have looked through the orcadefs 
: and I can clearly see that there are functions for polygons, but I have no 
: idea on how to access them. Could anybody supply me with a bit of basic 
: code or a description on how to use this command/s. 
:   Also what I would love to know what to do is to do flicker free 
: animation. I would like to do this using two drawing areas...ie screen 
: flicking. How do I go about this? I tried to use the memory manager to 
: reserve some memory, but it didn't work. It always crashed. I was loading 
: in TLTstartup(I think I have spelt this incorrectly, but it is the first 
: tool you start up), then I started up memory manager, and then I started 
: up miscellanous tools. Then I tried to reserve $8000bytes.It did work. I 
: didn't bother reserving 3 pages for quickdraw, could this be my problem? 
: Well when I get on latter on my IIgs I'll follow up with the code that I
: tried.
:      Thanks for any help.
: 
:   Happy computing! 
: ******************************************************************************
:    Joseph Turner
:      Apple IIgs User, and proud of it.
: ******************************************************************************

Here is the assembly code that I was appending to the main c code to try 
and startup tools and to then allocate some extra memory.

         case on
        copy e16.memory
        mcopy dlog.macros
HandleLoc gequ   0
ToolsDP   gequ   HandleLoc+4
DrawHndLoc      gequ ToolsDP+2

Startup   start
         using StartData
;Starting Code
         phk
         plb

         _TLStartUp
         wordresult
         _MMstartup
         pla
         sta   MasterID
         ora  #$0100
         sta OurID
      _MTStartup


       longresult
       pushlong  #$8000
       pushword  OurID
       pushword  #0
       phd
       phd
       _NewHandle
       pla
       sta DrawHndLoc
       pla
       sta DrawHndLoc + 2

       rts
       end

StartData  data

MasterID   ds   2
OurID      entry
           ds   2

GraphicMode   equ    $00
XClampMax   equ 320
          end


  HOpe that helps.
  thanks.
  Joe 
******************************************************************************
   Joseph Turner
     Apple IIgs User, and proud of it.
******************************************************************************