Glowing light trough transparency

[loyflut]

Hello,
I have a little use for rendering and animating a pulsating glowing light placed below a black transparent plastic!

I can't find the right type of light in the library, set the right transparency for the plastic in order to see the light through it and get this glowing pulsating effect in the same time.

If anyone as face something like that I would be very happy if i could benefit from your experience!
Thanks in advance.

Cheers

[INNEO_MWo]

You need one light (point light I would prefer) and a color fade animation node to set the pulse with black/white/black/... fades. This node should be the source for a color to number node, wich converts the black/white to values, wich is applied to the intensity of the light.

Hope that helps

Cheers

Marco
(written on a mobile)

[mattjgerard]

I think Marco's idea would be best, sounds like you are trying to animate the transparency of the plastic, when you should be animating the properties of the light itself.

[loyflut]

Thanks for your help.
The issu I have it's i use a component made in my 3d software (a cylinder) where I applyed a point light as MWo advise but the light goes in only on direction and I cant find the way to control this light in rotation in the component.
I tried to creat a geometry made in keyshot (a disc) but cant apply the light point in order to have the light going in 2 directions.
If you have any advice to make it work that will be so nice
Thanks for your help

[INNEO_MWo]

Hello.

If you need a "guided" light source, then you can use an IES light profile (e.g. 15° Spot light from the default library).
The intensity should be defined as Lumen and can be animated with the color to number node as described below (but with other values).

https://www.keyshot.com/forum/index.php?topic=21620.msg92081#msg92081

Or maybe the thread show one other solution?!


Cheers
Marco

[mattjgerard]

Marco got it again! A point light is an omni directional light source, so that won't work for what you need. If you want to control the light with geometry you need to use an Area Light, or as Marco stated use an IES light that will describe the shape and throw of the light.