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turtle
Account closed
Registered: Mar 2005
Posts: 44 |
plasma ?? what is it
someone who can explain what plasma is? certainly many who wonder what it is =)
is it real time ?
or
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... 39 posts hidden. Click here to view all posts....
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chatGPZ
Registered: Dec 2001
Posts: 11386 |
Quote:
to begin with plasma is a state of matter (ionised gas) where atoms and electrons become (partly) separated.
... which results in constant fluctation of molecular density, similar to fluid dynamics ...
Quote:
thus there's no fx that - even by mistake- can look "kindof" the same.
... which depending on visualisation method, pretty much equals different type of plasmas.
another famous example are various effects achived by the marching cubes technique - which does no more than visualising the density of "matter". |
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Oswald
Registered: Apr 2002
Posts: 5094 |
in a plasma state molecules does not exist, thus you dont have molecular density either.
do your homework.
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chatGPZ
Registered: Dec 2001
Posts: 11386 |
yes please, lets get into nitpicking again. mind you, we aren't doing a physics lesson here, and noone gives a shit wether a plasma visualises the gravitational force between atoms or electrons, the space between them, their speed or spin or whatever else (all of which is somewhat related to density of "matter").
but infact, to make you happy - you'd also get a similar visual effect by visualising the above said for actual molecules, it doesn't need anything like a real "plasma". (any more or less "chaotic" system would do the trick) |
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Oswald
Registered: Apr 2002
Posts: 5094 |
sorry, but I dont fall for buzzwords and I do also hate them. (multimedia/plug n play anyone?:) for me plasmas are what they are:just adding up sines, or interpolating in 2d, or waving a color wash, etc to achieve a colorful eyecandy. |
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Martin Piper
Registered: Nov 2007
Posts: 722 |
Why don't you just ban oswald for being repeatedly disruptive? |
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enthusi
Registered: May 2004
Posts: 677 |
Quote: sorry, but I dont fall for buzzwords and I do also hate them. (multimedia/plug n play anyone?:) for me plasmas are what they are:just adding up sines, or interpolating in 2d, or waving a color wash, etc to achieve a colorful eyecandy.
No offense Oswald, but exactly that might have been an appropiate answer to the initial question itself, no? |
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Monte Carlos
Registered: Jun 2004
Posts: 359 |
http://en.wikipedia.org/wiki/Plasma_effect
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Luca
Registered: Apr 2002
Posts: 178 |
@hollowman: ah very useful 32 chars dithering set, do you have a 64 chars deep one too? |
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Graham
Account closed
Registered: Dec 2002
Posts: 990 |
Just build yourself an own ordered dither matrix with 6 instead of 5 bits. Basically you only need to build up a 2x2 matrix and use it recursively adding the values together while you leftshift them.
Example:
2x2 matrix would be:
0 2
3 1
Step 1 of 4x4 recursion would be:
0 0 2 2
0 0 2 2
3 3 1 1
3 3 1 1
Step 2 would be:
0 2 0 2
3 1 3 1
0 2 0 2
3 1 3 1
Now add matrix A with matrix B*4:
0 8 2 A
C 4 E 6
3 B 1 9
F 7 D 5
Now for each char 0...F you do a compare:
CharPixel[c,x,y] = (Matrix[x,y] <= c)
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Luca
Registered: Apr 2002
Posts: 178 |
@Graham: errr... :o Your elucidation has been quite interesting. Nonetheless, and with a bit of shame, have to admit I've appreciated Hollowman's cooked-to-be-eaten charset, and I was ready to show to the whole world all my lazyness, when I asked for the same but double deeper (64). :) |
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