PDA

View Full Version : how to animate noise surface ?


ahs
07-10-2003, 02:29 PM
hi folks,

i'm working on a animated surface in the bumpchannel. like that one seen in SPHERE. but i get stuck in animating it (flowing together). the only thing i've managed is rotating the surfacebump but not flowing over it !

any ideas

cheers
andreas

SplineGod
07-10-2003, 05:19 PM
You can animate the texture position by using the E button next to the x,y or z in the texture editor or attach the texture to a reference object (null) and animate that.

ahs
07-10-2003, 06:08 PM
hi god ;-)

i know this technique but it'll only rotate the whole texture. there will no flowing on the surface. Or ?


cheers
andreas

SplineGod
07-10-2003, 06:17 PM
The texture will only rotate if you rotate it or the reference object. If, for example, you move the reference object down the yaxis the texturewill appear to flow down. You can also stretch the reference object to make the texture appear to stretch while flowing.

ahs
07-10-2003, 06:21 PM
thx

i'll give it a try, now.

cheers
andreas

ahs
07-10-2003, 06:25 PM
aeeehhhh,

i used a turbulenz in the bump channel, but i cant see anything after hitting F9 ?? (no bumps)

andreas

SplineGod
07-10-2003, 06:34 PM
I would use VIPER to preview textures.
The bump may not show for several reasons including the scale of the texture being too large or the layer opacity is too low.

aurora
07-10-2003, 06:36 PM
Hey ahs any chance of getting you to post an image or better yet the files you are working on? We might be able to help you better or if you want and just Email them to me let me know and I'll be happy to take a look at them as would others.

ahs
07-10-2003, 06:43 PM
hi folks,

nice to see so many helping people here.
http://home.tiscalinet.de/andreashaun2000/kugel.jpg
this is the noise i'm looking for
http://movieweb.com/movie/sphere/co1.jpg
and this sphere has the animated surface i'm looking for

cheers
andreas

btw: i finished the sphere in c4d in a jiffy (incl. animation)
but i'll like to have it in lw (for my ongoing project in microcosmos)

ahs
07-10-2003, 07:18 PM
hi,

i've found some numbers for bumpchannel

turbulence : texture value 100%
frequencies:1 (doesn't matter)
contrast: 200
small power: 100

scale= noise in the channels


but it goes for- and backward so i use an ocillator

cheers
andreas

aurora
07-10-2003, 09:02 PM
ahs, I tried using your data then took the envelopes of the scale and replaced them with a small envelope on the y-pos and one on the z-pos and got pretty decent results. Try it.

SplineGod
07-10-2003, 09:12 PM
Is THIS (http://www.3dtrainingonline.com/examples/sphere_bump_test.avi) sort of what youre looking for? :)

ahs
07-10-2003, 09:13 PM
hi aurora (sonnenstern)

what is a small envelope ? in your mind ?

cheers
andreas

ahs
07-10-2003, 09:17 PM
@splinegod,

thats very near !

but it needs more differencies in the bumpmap

i'll animate this in ...arrrggh... c4d and put it online.

cheers and thx
andreas

ahs
07-10-2003, 09:56 PM
here are the results of the german republic ;-)))


lw test
http://home.tiscalinet.de/andreashaun2000/test.avi



c4d test
http://home.tiscalinet.de/andreashaun2000/kugel2.avi

cheers
andreas

ahs
07-11-2003, 08:48 AM
@splinegod

hi,

would you share the numbers, how you make that sphere ?

cheers
andreas

aurora
07-11-2003, 02:20 PM
ahs - if so you send me your Email address I will send you a preset that is simular to Splinegods. The only difference, and Larry I wish you would share this trick with us, is his has a more rounded look to the textured bumps. I played and played with that but always came up with a more flattened, mesa like, look.

ahs
07-11-2003, 05:52 PM
hi folks

here are my surface settings
http://home.tiscalinet.de/andreashaun2000/sphere.jpg

the contrast does the trick ;-))
cheers
andreas

SplineGod
07-11-2003, 06:17 PM
Im glad you found the contrast adustment. I forgot to save my object and lost my surface settings on it. :)
I found that two th ings helped:
1. Contrast
2. Using a gradient with previous as the input parameter. I could use it to play with the overall shape of the bumps.

ahs
07-11-2003, 06:28 PM
hi larry,

i'm going to play with the gradients.

thx
andreas

ahs
07-11-2003, 06:32 PM
hi,

do you use the gradient as texture displacement ?

cheers
andreas

SplineGod
07-11-2003, 06:47 PM
You can use the gradient to modulate the underlying texture.
I use this to control the edges of the texture and the center area.
You can use texture displacement to help break up textures too.
This can also be useful to get a liquidy effect when animated

ahs
07-11-2003, 06:53 PM
hi,

if i add a gradient to my turbulece , i can only change the color ?? not the bump of the gaps

even i use it as texture displacement nothing happens ?

whats wrong

andreas

SplineGod
07-11-2003, 08:30 PM
Gradients can be applied in ANY texture panel not just color.
Texture displacement must be added BELOW the layer you wish to displace.

ahs
07-11-2003, 09:06 PM
hi,

sorry for my bad formulating. i placed the gradient in the bump channel but it alter only the luminance in the gaps.

cheers
andreas

SplineGod
07-11-2003, 09:17 PM
Youre going to have to experiment. Gradients can only effect luminense in the luminosity channel.
Gradients are very very powerful in Lightwave and can effect many things. :)

ahs
07-11-2003, 09:38 PM
ok.

i've in the bump channel 1 layer with turbulence (you know the settings)

then i add an gradient layer with texture displacement and the input is previous layer.

if i now add keys and alter the values, i can only see a change in the brightness not in the bump ! the bump stay always the same !

what i'm doing wrong ?

cheers
andreas

SplineGod
07-11-2003, 10:11 PM
The gradient is not being used to displace the turbulance procedural. Its being used to shape the turbulance in the middle and at the edges. Heres an example:

SplineGod
07-11-2003, 10:13 PM
Texture displacement is used to move or displace the texture above it. In this example the grid procedural is being displaced by the turbulance procedural BELOW it.

aurora
07-12-2003, 01:52 PM
ahs, I sent you that preset I promised. Hope it helps try cranking the gradient up I have in the bump layer to match what Larry displayed above and see what happens. I belive I left the gradient in the bump channel as a straight 100at0 -> 0at1 gradient.

ahs
07-12-2003, 08:53 PM
hi aurora,

i've got your email, thanks allot.

i'm going to experiment now with your settings ;-))))

cheers
andreas

ahs
07-12-2003, 08:57 PM
@splinegod

thx for your pics but they are to compressed i can't read anything, sorry

cheers
andreas

ASCIISkull
07-12-2003, 09:05 PM
One thing I haven't seen anyone mention, if you use two noise textures moving in different(usually opposite) directions, you create motion without a sense of flowing in any one direction.

SplineGod
07-12-2003, 09:07 PM
You really dont need to see my settings.
The important thing is to see how a gradient effects the bump shape and where it goes in relation to the turbulence. The same goes for the texture displacement.

ahs
07-12-2003, 09:19 PM
@asciiskull
you are right. so we are using scaling for the flow !

@splinegod
i can see nothing, even the layers !, sorry

cheers
andreas

CGTalk Moderation
01-15-2006, 02:00 PM
This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.