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Lights (Read 492 times)
secretsquirrel
Lights
Mar 18th, 2007, 5:25pm  
Hi,

I'm new to processing and have been working on creating a simulation of firefly synchronisation (http://www.bettstetter.com/publications/tyrrell-2006-minema-firefly.pdf). I've got my 3D environment set up and have my fireflies 'flocking / swarming' using something similiar to the perlin noise technique described here: http://www.flight404.com/blog/?p=67

What I'm now having problems finding is a definitive guide to using light sources (kinda needed for fireflies ^^ ). So far, attempts to create light sources haven't gone so well.
I'm looking to create 'halo'-like light sources, but using pointLights doesn't seem to be working. Can anyone point me to a guide or some example code?



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JohnG
Re: Lights
Reply #1 - Mar 18th, 2007, 9:24pm  
Lights themselves aren't visible, you only see the light they emit, when it hits objects.

I think you would get a better effect by using a partially transparent image for each firefly.
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secretsquirrel
Re: Lights
Reply #2 - Mar 18th, 2007, 11:21pm  
Thanks for the help - I see. That kinda confirms what I've been discovering.
That said, would it be possible to apply alpha channels to shapes? What I'm thinking is a solid 'firefly' shape, and an slightly transparent 'halo' - a sphere within a sphere, that is lit up when a firefly, uh, fires (?).
I'll keep experimenting - thanks again.
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