Old 16th June 2001, 10:35   #1
Rovastar
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Here is my first Old Style Geiss/Acidspunk preset nothing too fancy. See what you think. More complex than it first appears.....

[preset00]
fGammaAdj=1.000000
fDecay=0.950000
fVideoEchoZoom=1.000000
fVideoEchoAlpha=0.500000
nVideoEchoOrientation=0
nWaveMode=7
bAdditiveWaves=1
bWaveDots=0
bModWaveAlphaByVolume=0
bMaximizeWaveColor=1
bTexWrap=0
bDarkenCenter=0
bMotionVectorsOn=0
bRedBlueStereo=0
nMotionVectorsX=1
nMotionVectorsY=3
bBrighten=0
bDarken=0
bSolarize=0
bInvert=0
fWaveAlpha=4.000000
fWaveScale=1.402300
fWaveSmoothing=0.000000
fWaveParam=0.000000
fModWaveAlphaStart=1.000000
fModWaveAlphaEnd=1.000000
fWarpAnimSpeed=1.000000
fWarpScale=1.000000
fZoomExponent=1.000000
fShader=0.000000
zoom=1.000000
rot=0.000000
cx=0.500000
cy=0.500000
dx=0.000000
dy=0.000000
warp=0.000000
sx=1.000000
sy=1.000000
wave_r=0.650000
wave_g=0.650000
wave_b=0.640000
wave_x=0.500000
wave_y=0.500000
per_frame_1=ff= frame/100;
per_frame_2=zoom=1+(pow(cos(ff),4)*pow(sin(ff),3)/3);
per_frame_3=wave_g = cos(ff)-pow(sin(ff),2)*0.45+0.55;
per_frame_4=wave_b = sin(ff)/2+0.5;
per_frame_5=wave_r = cos(ff)/2+0.5;
per_frame_6=decay = 1-(sin(ff)/20+0.05);
per_frame_7=dx=cos(ff)/200;
per_frame_8=rot=pow(sin(4*ff),5)/30 + pow(sin(2*ff),3) /30 -sin(ff)/30;
per_frame_9=dx=pow(sin(ff),3)/100;
per_frame_10=wave_x = wave_x + sin(ff)/12;

Cheers,

Rovastar
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Old 18th June 2001, 03:34   #2
Krash
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nice, but because all the variables are a function of ff, it repeats itself alot. If you used different multiples of time instead, it would be a bit more interesting. And having a longer fade time would make it a little more interesting to look at as well

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Old 18th June 2001, 14:40   #3
Rovastar
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I thought that frames was an incremental counter of the number of frames from when MD was started so therefor it is no difference from the time variable. Let me know if I am wrong. I will experment with it later when I finish at work.

I looping stuff is a little repeative but that is sort of by design to look more like the old school Geiss style preset. I agree with the decay though but I am waiting for (hopefully) the decay values to change their variable range and/or the new progress variable to be released in 0.99e. Any that is my excuse and I am sticking to it.

Anyway why are you browsing these forums anyway you have exams to do. Get back to work!

Cheers,

Rovastar


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Old 18th June 2001, 23:52   #4
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After looking and experimenting more with this preset I actually worked out what it was doing.

I thank Krash pointing me in the right direction with the variable ff because you can very different outcomes to the vis the more you change the value.

Let me explain (hopefully not to much maths is needed here and I may be technically wrong) the looping period on my 1.4 GHz machine is 25sec for the preset with ff = frames/100 but if you change the value of ff to frame/300 the looping period is 3 times this 75 sec. Therefore the rate of change of the cos/sin waves is slower and that means a more intense rotation, decay, etc effect when these values are at max/min of the wave.

Anyway the bottom line is that changing the top value ff radically changes the vis.

try ff=frame/50,
ff=frame/250
ff=frame/500
ff=frame/30 etc.

or even ff=(frame+rand(frame/10))/100
(or divided by whatever) for a more random effect.

So if you do not like the preset in it current form change this one line and the preset will change loads. This may depend on the speed of your machine.

I actually like ff=frame/250 on my machine better than the original preset of ff=frame/100


Do you like that better Krash

Hope it all helps folks,

rovastar


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Old 19th June 2001, 04:09   #5
Krash
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Yeah, very interesting =]

I was never actually a big fan of Geiss, so I wouldn't really know where you're coming from. Nice all the same

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