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From: howard@cpocd2.UUCP (Howard A. Landman)
Newsgroups: comp.sys.mac.hypercard
Subject: Re: problems with visual effects
Message-ID: <996@cpocd2.UUCP>
Date: Wed, 25-Nov-87 14:02:27 EST
Article-I.D.: cpocd2.996
Posted: Wed Nov 25 14:02:27 1987
Date-Received: Sun, 29-Nov-87 12:00:43 EST
References: <4@ovaltine.berkeley.edu> <13160@felix.UUCP> <6765@apple.UUCP> <5967@jade.BERKELEY.EDU>
Reply-To: howard@cpocd2.UUCP (Howard A. Landman)
Organization: Intel Corp. ASIC Systems Organization, Chandler AZ
Lines: 33

>In article <6765@apple.UUCP> hyperbug@apple.UUCP (Keith Rollin) writes:
>>It's OK; we know about this one. Actually, it's not a bug, but an honest
>>to  feature that the programmers worked hard at to put in.
>>Because of speed and memory limitation (mostly speed), visual effects are
>>disabled when your screen is using 2 or more bits per pixel.

In article <5967@jade.BERKELEY.EDU> edmoy@opal.berkeley.edu () writes:
>I suggest having this a configurable option on the next version of HyperCard.
>I think many (if not most) people would be willing to give up speed for some
>of the neat visual effects.  Setting the screen back to 1 bit is a pain.
>Also, if someone wrote an external command that could display color, then
>he could have both color and visual effects.

Keith, I agree with Ed.  Consider the case where someone has specified

	visual effect dissolve very slowly

and you are refusing to dissolve at all in the interest of speed.
Kind of silly.  So, it might be worthwhile not only making it
configurable, but allowing it to depend on the specified speed,
e.g., do it if slowly or very slowly are specified, but not otherwise.
This limit may have to depend on the number of bits per pixel.

The memory limitations are acceptable if necessary, but does the code check
to see whether it is running on (say) an 8 MB Mac II with 6 MB free?  Hah,
I thought not.  This check should not take as long as performing an effect,
and so would be worth adding.

-- 
	Howard A. Landman
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