Path: utzoo!utdoe!generic!pnet91!marekp
From: marekp@pnet91.cts.com (Marek Pawlowski)
Newsgroups: comp.sys.apple2
Subject: Smooth Scroll for Graphics in Assembly - How?
Message-ID: <143@generic.UUCP>
Date: 9 Nov 90 22:00:04 GMT
Sender: root@generic.UUCP
Organization: People-Net [pnet91], Etobicoke, ON
Lines: 15


   I am looking for advice in the area of graphics scrolling on the screen. 
When I have a routine which DRAW's (EQU $F601) a shape, then XDRAW's (EQU
$F65D) over the same shape, then increments the X position by one, and does
the process over again, the shape moves along with a very annoying flicker.

   Instead, I would like the effect of the shape sliding, without any major
flickering.  Are there suggestions/corrections as to how I can do this?

   All help appreciated, as usual.


/* Marek Pawlowski, marekp@{generic|pnet91|contact|bkj386|torag|aunix}.uucp */
/* President, Intelligent Twist Software, 250 Harding Blvd, PO BOX 32017    */
/* Richmond Hill, Ontario, L4C 9M7, CANADA.				    */