KeatonMill

11th June 2003 04:08 UTC

DM source map
I'm interested in implementing a sort of static (in that it's always on) DM source map. The problem is that I can't exactly figure out how the source map works. Can someone help me with this?

Thanks
~K-dawg

dirkdeftly

11th June 2003 05:07 UTC

source map moves the color of each pixel into it's target position and leaves everything else black. normally it's the other way around; the color of the target pixel is moved into the original. for example:
x=x*2;
normally the pixel at x is colored according to the pixel at x*2. source map reverses this; the pixel at x*2 is colored by the pixel at x.
in the long run, it's better to try to reverse the function before trying to use a source map, because source mapping just plain looks ugly. if you're not familiar with inverse functions then you need to brush up on your algebra - basically it's taking the function f(x)=..., replacing every instance of x with f(x)^-1 and every instance of f(x) with x, then solving for f(x)^-1. so the inverse of f(x)=x*2 is
x=f(x)^-1*2
x/2=f(x)^-1
there are a few cases i can think of where you would want an actual source map for data storage and whatnot, but i really can't see anybody that isn't unconed and isn't me using that, and i certainly can't. why did you want it?



not that i am in any way as good as unconed, but i'm about the only other person on this forum that would resort to tricky hacks like that...

[Ishan]

11th June 2003 09:40 UTC

yah, why do you want it for??(i mean i'm not able to use souce mapping in mov's to a good effect:( )

sidd

11th June 2003 11:03 UTC

i'm about the only other person on this forum that would resort to tricky hacks like that...

dirkdeftly

11th June 2003 11:38 UTC

sid, you are a total fucking moron, you know that? i said i'm the only one who *would* resort to those measures just for a damned preset. i also went on to say that i *could not* do so.
if there was any reason to that post other than to try and instigate an argument (and if i had a dime for every time you've accused me of doing that i'd be a rich man), you tell me.

PAK-9

11th June 2003 11:40 UTC

This sparked a huge argument on finnish flash between Atero and Sid, just in case anyone cared. :weird:

Phaze1987

11th June 2003 11:43 UTC

pak-9 ? forums ? :igor:
Guys,quit the argument,it does not worth it..

sidd

11th June 2003 11:44 UTC

no arguements then..
:)

Raz

11th June 2003 12:05 UTC

*sigh* another day another argument. What's this... Atero? Again? :rolleyes: :p

sidd

11th June 2003 12:32 UTC

i wouldnt do that if i were you raz.
please leave this topic alone.

KeatonMill

11th June 2003 16:52 UTC

Atero: Well, actually my original idea would be to reverse a 3D DM just for the heck of it and see what it would look like... It could also be useful for a couple of my "trippy diner" presets. I understand what you're saying about function inverses... I'm just wondering if there's some sort of shortcut if you know x, y, x' and y'...
Siddhartha: I'm talking about implementing source map in a DM. If I wanted to just have a static movement map I would of course use a regular movement, but that doesn't seem to work so well.

[Ishan]

11th June 2003 17:01 UTC

So you are wanting to implement a source map in a DM , then this should be in the wishlist aint it???:p

Raz

11th June 2003 17:56 UTC

Siddhartha, don't worry if i get into arguments i either come up with a correct and relevant argument and present it in a mature and adult way or i say "i lub joo too" or some such :D

KeatonMill

12th June 2003 20:43 UTC

So, aside from all of the non-existant ;) arguements, does anyone know how to duplicate the source map effect without re-writing the equations?