Topic awaiting preservation: Syringe (Page 1 of 1)

This is my 2nd complex model, (Complex to me anyhow) It's an insulin syringe, the bottle and cap come next. This is also my first try at global illumination. I'm not too happy with the shadows but It took forever just to get rid of the artifacts. The materials are kinda crappy too. Also needs an imagemap... gee.. looks like I'm FAR from finished with this one. Any critiques are welcome!
http://akasha.y0ru.net:8080/~schitzo/misc/insulin.png

Schitzo

Actually it looks good so far.

I would love to see the image completed with imagemap and what not.

Just out of curiousity, what did you use to create this image? I'd really love to start working in 3D one of these days but I have no immediate use for it other then pleasure and the programs are expensive.

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cheers.jay

Believe it or not I used POVray. Once you get past theinitial steep learning curve it gets real easy. Its free and the results are amazing (as long as you're patient

Schitzo

Hey looks nice. But if I may sugest a thing or two. 1) frost the syringe... Most are a milky clear plastic. This one looks very clear. 2) put some blue fluid in the syringe... and add a drop of stuff hanging off the needle. Both of those changes will make the image more interesting.

Cheers!

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I agree that the syringe needs to look hazier, I'm just not sure exactly how to do it. I think its called sub surface scattering and I need to use and interior media. I've never touched media before so I've got a lil bit of reading to do first. Next I'm gonna make a lathe bottle full of insulin.

p.s. Insulin isn't blue!

SOURCES!

Nice modelling. Certainly if you want that milky effect of transparent solidity, you'll need scattering media. Honestly, if you're going to start working with media, I suggest you start with a different image, with more simple container objects (like a sphere). You'll probably run into a lot of problems, and the simpler the objects you're working with, the easier it will be to catch your mistakes.

You may also want to just try giving the plastic a pigment that's not perfectly transparent. Try rgbt <.9,.9,.9,.8> or something.

Did I mention that syringes make me faint? =)

(Wow, you used radiosity for this, I just realized. That's pretty cool.)

Did you take the link down? Because I keep getting a 404 error.

Hmm, should work. i'll try to upload a new version later. I'm really havin' some troubles with subsurface scattering so it might take some time.

http://akasha.y0ru.net:8080/~schitzo/misc/insulin3.png YAY! I think I'm done! Global illumination is cool, but its not easy when the majority of the object is transparent I took it out and put in an area light instead.

Grumble: If you still want the source I can send it to ya.

[This message has been edited by Schitzoboy (edited 03-16-2002).]

Much more realistic. The area light needs more points and less jittering, though (the shadows look very fuzzy). Also increase the resolution of your image map, it looks a bit blurry.

Thanks Silme. I just upped it from 2x2 to 5x5 and changed the rez to 1600x1200 (before cropping). I overwrote the last file so it's in the same place.

Schitzo

ooh yea yah! iz perfect man! iz way to clean! Flop it inta PS and dirty it up!

. . .

From 2x2 to 5x5? Hah! My more recent area lights are 17x17. I rarely go lower than 7x7, although now I tend to use 9x9 since 7x7 isn't easily adapted (if you're using adaption, which is a good idea).

The "hah" in that last paragraph was just to add a bit of light humor, i'm not really laughing at you =)

Actually, your area light looks a lot better now. No jittering noticeable, so don't worry about it. I guess it's only really necessary for larger area lights.

I can still see individual pixels on the numbers... when i said you should change the resolution, i meant for the image with all the "5 10 15 20... units" on it =)

But aside from that, this is really good!

not being a 3d'er myself, I just wandered in and thought I would say your syringe looks exellent Schitzo! very impressive

~Vp~

it's looking nice, but still looks fake because your edges are sharp and aren't catching any kind of reflection/highlight. NOTHING (save maybe a blade or something) has a truly sharp edge, everything is beveled to some extent. that bevel is what light catches to highlight the edges of an object, thus giving it depth. try it and soften that shadow a bit and you'll be getting towards photoreal...

chris


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