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Realsoft Forum • View topic - Klein bottle

Klein bottle

Klein bottle

Postby geo » Saturday 13. May 2006, 10:16

Not really a wip, but curious object I saw in a museum the other day and thought I could model it easily. Don't recall seeing these before in my travels and reading. The bottle has no edge and only one side, or something like that. Cut it open and you get two mobius strips.

Anyway it made me realise I know nothing about making or rendering glassware. I did make it thicker by doubling the walls, but when you extrude over the top and back in - the outside becomes the inside and they don't hook up :-) There were threads about rending glass I think. Will look later and maybe update. The bottle is too hard to drink beer from anyway.

Geo
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Postby Timo » Saturday 13. May 2006, 12:25

You might want to take a look at LeoxandeR's glass shader. a proper fresnel does wonders. You also need more recursions. And you could drink beer out of that ;)
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Postby geo » Monday 15. May 2006, 06:49

oh recursions. Ta. Makes sense. Couldn't get Leoxander's shader to work. Had a quick thought about putting booze in it, but too hard for Monday morning. Where do you start modeling beer?

Anyway here is an update with recursions fixed.
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Postby Timo » Monday 15. May 2006, 17:19

The absorption multiplier is pretty high as default in LeoxandeR's shader, try dropping it to one or so. Also remember to load the procedure library first (as stated in his post)
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Postby TheRookie » Monday 15. May 2006, 18:14

The three most important aspects of glass imo are recursions, lighting and enviroment, this is a very old tutorial but perhaps it might be helpful

http://web.ukonline.co.uk/frank.dodd/Re ... ottle.html
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Postby geo » Monday 15. May 2006, 21:23

Well thanks Frank. You do turn up at opportune times :-)

Here is your scene with my bottle and Leoxander's shader. Unfortunately it shows the seams of my nurbs surfaces now. Can't work out how to join them together.
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