[Bf-funboard] Feature proposal: Cycles Shader "Phosphorescent"

[Karl Kühberger]

I think this could work. I will give it a try.
Thanks for your hints.

Karl



> Am 20.08.2015 um 19:45 schrieb Tiago Estill de Noronha <TiagoTiagoT+Bf-funboard at gmail.com>:
> 
> I think you might be able to create this effect by first baking a diffuse
> map of the animation (of the whole animation, not just a frame), then use
> some some compositor trickery to combine the frames additively with the
> previous frame, while also averaging the result of each frame with black
> (the black is to make it fade), repeating the process with it's own results
> as many times as necessary to make the glow last for the duration you want.
> Then use that animation as the color and/or strength map for a Emission
> node added to a diffuse shader (the Diffuse shader is to define how the
> material looks when it isn't lighting itself).
> 
> On Thu, Aug 20, 2015 at 9:36 AM, Karl Kühberger <karl.kuehberger at gmail.com>
> wrote:
> 
>> Hi!
>> 
>> For a little animation I was looking for a kind of phosphorescent effect.
>> I mean this effect of phosphor color (normally green), which keeps the
>> light energy when it is hit by a light source and emits it until
>> continuously
>> over a certain time.
>> 
>> I now how to obtain this effect in Cycles using animated nodes, but for
>> the desired effect it should work automatically because there are too
>> many light-sources and moving objects throwing shadows.
>> 
>> I think of a „simple“ shader similar to the already existing „Emission“,
>> but with no fixed strength. The strength sould be 0.000 at the beginning
>> (or alternatively have a minimum to be set) and which loads up light energy
>> until a maximum (max. slider to be set by the user). The collected energy
>> should be emitted continuously until the „battery“ is empty. Another slider
>> for the speed of discharge would be the icing on the cake.
>> 
>> Is this kind of shader interesting for other people too?
>> For me as a non-coder it sounds quite easy to be made (hopefully it is),
>> but I know that things often are much more complicated as it seems to
>> a noob.
>> 
>> Best regards,
>> Karl
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