Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!uupsi!sunic!dkuug!daimi!pilgrim
From: pilgrim@daimi.aau.dk (Jakob G}rdsted)
Newsgroups: comp.sys.amiga.graphics
Subject: Re: several questions on dpaint, and selective fading ( perplexed )
Message-ID: <1991Apr23.185332.22479@daimi.aau.dk>
Date: 23 Apr 91 18:53:32 GMT
References: <111524@tut.cis.ohio-state.edu>
Sender: pilgrim@daimi.aau.dk (Jakob G}rdsted)
Organization: DAIMI: Computer Science Department, Aarhus University, Denmark
Lines: 36

wayne-s@tut.cis.ohio-state.edu (derbaer) writes:
>I would like to be able to take a dpaint file, and selective fade in and out 
>any and/or all of the colors used to create the image from some specified 
>initial point to the images final color scheme. 

>eg.  I have three squares colored red, blue, and green on a black background.
>I want to be able to start with the initial picture, and then fade the red 
>square, then the blue, then the green, to the background color in succession. 

>Now, what i _don't_ know is how unreasonable i am being in this line of 
>questioning.  I should think this feat to not be very hard, but then i could 
>be wrong... :D 
As far as I know it is a very easy feat; meant in terms of what the computer
must do, and can do. F.x, I could do things like that by reading the picture
in from AMIGABASIC and then alter the palette(It is so easy, because it is
not HAM). Practically, though, a program suitable for this would be written
in a compiled language(Modula-2(my choice) or C.
>So are there any PD, shareware, commercial programs that do what i speak of? 
>I'll settle on a binary, but would be oh so pleased to glom onto code as well.

I don't know of any, but there should at least be(it is not an all-silly
purpose). A problem concerning the nature of what should be done, though is
this: Assuming you only want to do the described effect, a program for this
sole purpose could be written and used. But the best would be a program
more general in concept, to do various effects. And this is the problem:
Devicing an interface, with which one could describe these effects(e.g.
tell the computer what to do) seems hard to me; it would maybe be easier
to program the solution.

just my 17.623 $ of worth(well its abit long, isnt it?)

--
From the notorious
                      Jakob Gaardsted, Computer Science Department
Bed og arbejd !            University of Aarhus,  Jylland (!)
(Pray and work!)       AMIGA!               |     I'd rather play Moria.