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I would like to use the age of particles to effect the color of a material, however the Particle Info node returns the age of the particles in frames so the values are greater than one. (which makes the ColorRamp node ineffective as it works in the 0-1 range.)

Image of my node setup

So I need to convert the Age value to the 0-1 range (As you would with the Map Range/Map Value node) but with Material nodes instead of Composite nodes.
Is this possible?

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  • $\begingroup$ dude, how did you figure out the output was in frames?? got that exact question up here blender.stackexchange.com/questions/2885/… $\endgroup$
    – krivar
    Commented Sep 13, 2013 at 17:19
  • $\begingroup$ @krivar it says so on the wiki ;) That's a good question though, you might want to consider generalizing it to be something like "is it possible to view values outputted by node as numbers?" I have wondered that too.. $\endgroup$
    – gandalf3
    Commented Sep 13, 2013 at 20:17

1 Answer 1

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Use a Math node set to multiply:

  • on top put 1.0 / max age <-- this you can precalculate
  • in the second socket connect age

= 0....1

or, Use two Math nodes. Useful for if your max age is the same as lifetime of the particle. This way you can also deal with a dynamically changing particle lifetime.

enter image description here

enter image description here

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  • $\begingroup$ Why don't you just Divide the Age by the Lifetime? You would have a [ParticleInfo] node and a [Divide] node, and [ParticleInfo:Age] -> [Divide:TopValue], [ParticleInfo:Lifetime] -> [Divide:BottomValue]. $\endgroup$
    – wchargin
    Commented Oct 20, 2013 at 22:58

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