Forum: Bryce


Subject: creating a crystal logo

swoosh55 opened this issue on Aug 11, 2005 ยท 6 posts


swoosh55 posted Thu, 11 August 2005 at 6:10 PM

Hey all!
i'm curious on how you guys would do a rendering that could look like this
http://www.plasmadesign.co.uk/images/MacDesktopLarge.jpg
I have tried diffrent lighting and materials but i'm not getting this crisp crystal effect.
Here are 2 attemp of my logo...
[IMG]http://i16.photobucket.com/albums/b13/Olivier_Gabrielle/wallpaper_bryce5.jpg[/IMG]
[IMG]http://i16.photobucket.com/albums/b13/Olivier_Gabrielle/wallpaper_bryce6.jpg[/IMG]

So any tips would be welcome
Thanks


Dann-O posted Thu, 11 August 2005 at 6:35 PM

There are a few ways to do it. If you only have Bryce then make the shape in a program like illustrator then convert it to a bitmap then you apply it to a symetrical lattice. Make sure the size of the image is big over 1000x1000. Then apply a texture from your glass library. Tweak the texture till it looks right. On symetrical lattices the problem is that often there will be a seam in the middle. Another way is if you have a modeler model the logo you want. Now if it is just text most modelers support text so just type it in. Otherwise you will have to model it and that changes depending on wha tkind of modeler you use be it box, spline, Nurbs, patch, or a rails extrusion type. Lat remember to set your number of reflections and transparencies higher for a render like that.

The wit of a misplaced ex-patriot.
I cheated on my metaphysics exam by looking into the soul of the person next to me.


Nicko15 posted Thu, 11 August 2005 at 6:49 PM

Try changing the total internal reflection and maximum ray depth settings in the render options (flippy triangle).

Gog posted Fri, 19 August 2005 at 10:43 AM

I tend to keep MRD higher then TIR by at least 25%, IMHO, TIR tends not to make a great deal of difference above a TIR of 10 or so

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Toolset: Blender, GIMP, Indigo Render, LuxRender, TopMod, Knotplot, Ivy Gen, Plant Studio.


Rosemaryr posted Fri, 19 August 2005 at 6:22 PM

Also, to get the crisp faceted look of the cut crystal, be sure to !!!!---un-smooth----!!! the model.

RosemaryR
---------------------------
"This...this is magnificent!"
"Oh, yeah. Ooooo. Aaaaah. That's how it starts.
Then, later, there's ...running. And....screaming."


Rosemaryr posted Fri, 19 August 2005 at 6:28 PM

And a second (third?) thought: You may wish to use a lower poly-count model. The one shown in your own test renders actually look too smooth along the curved sides. Compare the curved bevels on your desired examples. That's where a lot of the difference appears.

RosemaryR
---------------------------
"This...this is magnificent!"
"Oh, yeah. Ooooo. Aaaaah. That's how it starts.
Then, later, there's ...running. And....screaming."