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Tranquility - small by phresnel Tranquility - small by phresnel
Rendered with picogen (upcoming version 0.4)

A Tranquility in the morning, the sun arises and elegantly projects into the slowly settling night fog. Autumn, still warm, the world is becoming golden.
Some leafs have fallen already, raising the beauty of what remains.

--

This is the result of enriching picogen by the following over the last weeks:

* L-System compiler, interpreter, mesher (based on Algorithmic Beauty of
Plants)
* Texture mapping and adding a generic material framework
* Add an additional cylindrical mapping camera (the previously used pinhole
camera had too much distortion for actual geometry like trees)
* Make translucent materials possible
* Make possible to combine multiple BSDFs (based on the PBRT approach)
* Add instance-primitives (which are basically pointer-to-objects with a
seperate transformation)
* Add a generic acceleration structure (Bounding Volume Hierarchy in
particular) to store tree-instances
* Add a triangle-specialized acceleration structure to gain more performance
for trees themselves

... and another plethora of code-bits not really worth mentioning one-by-one :)

--

Now I need some sleepery, please pardon moi if I check all watches tomorrow and instead get some sleep now :hug:
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:iconmiarath:
Miarath Featured By Owner Sep 30, 2010   General Artist
Looks wonderful!! Guess you really did get a lot of work done. :) :iconthumbsupplz: :heart:
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:iconphresnel:
phresnel Featured By Owner Oct 5, 2010
I hope it will all pay out (in terms of fun). Merci beaucoup :heart:
Reply
:iconmiarath:
Miarath Featured By Owner Oct 5, 2010   General Artist
You're most welcome. :huggle: :heart:
Gern geschehen.
Reply
:icondexausmelmac:
DexausMelmac Featured By Owner Sep 1, 2010
A beautiful render! My favourite bit is the sun rays. My only point is that the water appears to be a bit too undisturbed, almost like a mirror.

other than that, it looks perfect :)
Reply
:iconphresnel:
phresnel Featured By Owner Sep 8, 2010
Thank you very, very much. Looking back, yes, the "water" is too flat. Must implement fresnel-refraction yet, then it will maybe look better :)
Reply
:icondpow3r:
dpow3r Featured By Owner Sep 1, 2010
I was mind boggled for one second , i couldn't figure out what the image is from the first glimpse , then i thought this is a worm view of some huge trees . I like how you made the trees , they look fantastic though not very natural but to be honest with you , i think the reflective ground ( or is it supposed to be water ? ) ruined the beauty of the image.

Good luck in the competition and keep up the good work :) .
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:iconphresnel:
phresnel Featured By Owner Sep 1, 2010
-> "i couldn't figure out what the image is from the first glimpse"

Not at all, or did you have (which would be awesome) problems deciding on whether this is a photograph or a rendering? Or is there too much visual noise?


-> "though not very natural"

May I ask you why? (I don't feel offended or so, I am just curious :D)


-> "or is it supposed to be water ?"

Yes (I knew I should better apply noise on it) :P


-> "Good luck in the competition and keep up the good work :)"

Thank you very, very much :)
Reply
:icondpow3r:
dpow3r Featured By Owner Sep 1, 2010
"Not at all, or did you have (which would be awesome) problems deciding on whether this is a photograph or a rendering? Or is there too much visual noise?"

I guess because there is too much visual noise.

"May I ask you why? (I don't feel offended or so, I am just curious :D)"

Its hard to tell precisely but the leaves of the tree are very uniform in orientation and position also the tree branches seems to follow some pattern.

Take a look at this image [link] no branch is similar to another , i think that's what makes trees in nature look interesting.

I never expected you to add the L-System to picogen so quickly , congratulations you definitely deserve some rest now.
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:iconphresnel:
phresnel Featured By Owner Sep 8, 2010
Btw, do you think the lighting on the leaves is okay? Imho, it looks very similar to what I see at sunset/rise, when the sun-disk (argh, I graphics-program too much) is occluded by trees.
Reply
:icondpow3r:
dpow3r Featured By Owner Sep 8, 2010
No , the lighting of the leaves is not okay , its PERFECT (i really mean it).I forgot to tell you this but i think you did a pretty amazing job at implementing the translucent material , if only you can improve the tree-generation process a little bit more I'm certain that you will reach photorealism.

You gave me enough motivation in this deviation to move my lazy ass and work harder.Thank you :)
Reply
:iconphresnel:
phresnel Featured By Owner Sep 9, 2010
"PERFECT" -> oh wow, thank you very very much :D It is actually a pretty hacky hack. It is 50% lambertian reflection, and 50% lambertian reflection transformed into a transmissive BSDF (the "transformer" is inspired by PBRT)

"tree-generation" -> I see. Admittedly, I was too lazy to define an awesome L-System and just took one from "Algorithmic Beauty of Plants" (a free book). The one you've shown should be possible in structure already, and then the missing link is spline-interpolation, and better leaf-distros :)


"motivation" -> I am amazingly glad if that is true :) I see a lot of potential, seeing how much you've improved on ompf that fast
Reply
:iconphresnel:
phresnel Featured By Owner Sep 8, 2010
"Its hard to tell precisely but the leaves of the tree are very uniform in orientation and position"

Working on that. Once trees make it into release, one will have to choose some kind of distribution (like "disk", "sphere", "cylindrical") and stuff ... and then, ..., profit :D

Thanks also for the tree-image-link. The formation of this tree should already by possible with picogen, having implemented stochastic l-systems. Though I also need to implement spline interpolation between tree-nodes.
Reply
:iconphresnel:
phresnel Featured By Owner Sep 8, 2010
"I guess because there is too much visual noise."

I see. I had that feeling for a moment, too. But then there is a jungle-photograph atop my computer screen that is even noisier, hence I thought it'd be okay :S :D
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August 31, 2010
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