Introduction to Maya - Rendering in Arnold
This course will look at the fundamentals of rendering in Arnold. We'll go through the different light types available, cameras, shaders, Arnold's render settings and finally how to split an image into render passes (AOV's), before we then reassemble it i
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31
23-01-2004
, 06:05 PM
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Creating runway lighiting effects
A linstep function is used in conjunction with a ramp to control the rgbPP attribute of the particles color. The particles appear to "turn on" sequentially from front to back. An offset is added to the particle's age to create this effect.
creation expression:
$pos=particleShape1.position;
particleShape1.lightOffset= ($pos.z+20);
--------------------
Runtime expression:
$myAge=particleShape1.age-(particleShape1.lightOffset*.25);
particleShape1.rgbVPP=linstep (2,3,$myAge);
enjoying...!
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27-01-2004
, 07:12 AM
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Originally posted by ragecgi
Hasn't really stopped, just slowed down a bit because folks are a little busy.
It is a "sticky" thread so that way it is always at the top for reference
Feel free to post any questions, and we will see if we can help
I don't know how to create footprints on the ground.If you have an expression for it ...
I love the thread.
tathu
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27-01-2004
, 05:12 PM
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I think Mike Mckinley or even Danny Ngan know of a way to do this, so they might be better people to ask
Thanks! Good luck!
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28-01-2004
, 06:23 AM
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Last edited by tathu; 28-01-2004 at 06:28 AM.
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28-01-2004
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29-01-2004
, 08:20 AM
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like:
if (your foot touches ground )
the ground should effect;
else if (if its leaving the surface)
the ground should effect;
i think u'll not be able to ...produce realistic effects with only expressions
like Rage said blendshape could help....and i think that there will be an attribute that can be keyable and can be controlled through expressions...so...give a try...u know...expression makes your scene clean from raw data that take up extra..resourse cause they excute when conditions are met......
well will be putting....expression for same type of effect soon...which produces swells in softbodies....it will be helpfull to produce perfect result...for ur scene
enjoy ....
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37
02-02-2004
, 07:43 PM
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1. Create an emitter with as desired parameters......
2. Create Custom Attributes as follows
a. tornodoRadius
b. tornodoTwist
c. tornodoRadiusMult
now let code:
creation Expression
particleShape1.tornadoRadius=rand (.75,1.25);
particleShape1.toranadoTwist=rand (1,3);
particleShape1.position=<<1000,0,0>>;
****
Runtime Expression
vector $pos=particleShape1.position;
float $radius=particleShape1.tornadoRadius*particleShape 1.tornadoRadiusMult;
float $speed=time*particleShape1.toranadoTwist;
float $noise=noise((time*.3)+(particleShape1.particleId* .01));
particleShape1.position=<<($radius*(sin($speed+par ticleShape1.particleId)))+$noise
,$pos.y+.1,
($radius*(cos($speed+particleShape1.particleId)))+ $noise>>;
****
and third create a ramp on tornodoRadiusMult custom attribute this ramp will be used to control its hollowness from top or bottom.....
adding source file.........check it out...!
enjoying.......!
