condensation on bottle testing
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If you do not want us to publish your art, please mention it in your post clearly. (put a very red small diagonal cross in the left right corner of the image)
Any images already published on the gallery will be removed if the original author asks us to do so.
We recommend placing your credits on the images so you benefit from the exposure too, and use a minimum image width of 1200 pixels, and use pathtracing or PMC. Thanks for your attention, The OctaneRender Team.
For new users: this forum is moderated. Your first post will appear only after it has been reviewed by a moderator, so it will not show up immediately.
This is necessary to avoid this forum being flooded by spam.
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itsallgoode9
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some proof of concept water drop testting as I go along
Last edited by itsallgoode9 on Sat Jul 25, 2015 3:35 am, edited 1 time in total.
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FrankPooleFloating
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Displacement?.. 
Of the glass?.. Glass and water have a different IOR. I always do water drops as separate object(s). Some times as instances... works like a champ.
And displacement can be painfully slooooow...
Of the glass?.. Glass and water have a different IOR. I always do water drops as separate object(s). Some times as instances... works like a champ. And displacement can be painfully slooooow...
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itsallgoode9
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The drops are a separate layer of geo with the correct IOR and an alpha map. Render times are fine for me, this only took a couple hrs to render. For my needs, displacement is the only way to go. Once my have my displacement map created, I can apply to any bottle I need rather than hand placing thousands of drops of geo anytime a client decides they want water drips on a bottle.
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FrankPooleFloating
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Ahhh. Roger that. 
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Why would you hand place? Couldn't you use the bottle shape as a particle emitter?itsallgoode9 wrote:The drops are a separate layer of geo with the correct IOR and an alpha map. Render times are fine for me, this only took a couple hrs to render. For my needs, displacement is the only way to go. Once my have my displacement map created, I can apply to any bottle I need rather than hand placing thousands of drops of geo anytime a client decides they want water drips on a bottle.
best,
O
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itsallgoode9
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I've tried that that in the past but had no luck in getting it to look good enough. I've tried scatter programs too but not luck. They just give you random placements but condensation isn't exactly random, as one would think...there's method in its seemingly randomness. I just might not know how to to use particles well enough though. I've also worked with scattering programs but most are too random as well. Carbon Scatter 2 actually gives me the control I need to create the desired look but it's not compatible with octane render unfortunately.
Do you have any samples you could throw together showing what result you've been able to get with using the geo as a particle emitter?
Do you have any samples you could throw together showing what result you've been able to get with using the geo as a particle emitter?
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itsallgoode9
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damn, that would be s o helpful for me. unfortunately i'm a maya user. one of these days i think i'm just gonna break down and pay somebody to write a tool for me
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itsallgoode9
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here's a quick test update I did using geo instead of displacement. This test was basically to figure out how to get the lighting to cast some nice shadows and caustics while having little pinpoint highlights on the drops...sort of a proof of concept for myself. Alot of bottle photos use this type of crisp, non organic drops on their labels, so that's what i wanted to explore a little bit.
great test! certainly looks more natural! =)