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Subject: volumetric mist


RaysOfLight ( ) posted Sun, 19 May 2002 at 6:22 PM · edited Fri, 27 December 2024 at 10:21 PM

i've seen lots of pics made with bryce where there's mist hovering just above the ground, or swirling upwards and stuff, you get the point how do i do that? i don't want to use a cloud plane, because they're too flat i need something.... well, volumetric i read a tutorial somewhere a short time ago, where it said to use a sphere and put a cloudy texture to it i tried that, but the texture doesn't look quite right i've got a test render done, but since i'm at school now, i can't really post it :p i need a sort of cloudy, eery mist i'm using all Bryce 5 presets here if that helps any


firefly ( ) posted Sun, 19 May 2002 at 6:59 PM

you can also try using squares and/or terrains. They work well! Of course, it does require lots of experimentation and fidgeting even with the cloud you choose.


sdnoble ( ) posted Sun, 19 May 2002 at 7:31 PM

Attached Link: http://www.renderosity.com/viewed.ez?galleryid=106563

Sheres with volume textures have always given me the best results. A single large sphere in the background with smaller ones at strategic spots to fill in where needed. The sheres can't be to small or too squished and overlapping them usually causes artifacts where the materials intersect. One of the best of the volume materials to play with is the yellow/brown smog preset (with the colours altered). You can adjust the scale and world/object spacing of that one easily to achieve the desired effect. A lot of trial and error in involved regardless of what material you use. Check the link to see an example, it the best I've managed to produce.


RaysOfLight ( ) posted Sun, 19 May 2002 at 9:58 PM

damn, i can't see the picture
people tend to much around a lot with these computers, and for some stupid reason, they show every picture other than the ones in the galleries.
i'll check it out soon as i get home :)

thank you for all your help, i hope i can make something decent out of it heheh


kawecki ( ) posted Mon, 20 May 2002 at 5:28 AM

Attached Link: http://www.renderosity.com/viewed.ez?galleryid=132695&Start=1&Artist=kawecki&ByArtist=Yes

file_9085.JPG

I use planes or irregular surfaces, one or many, can be horizontal, inclined or vertical, depend of the needs. The texture is used as transparency map. The ambient color is white or can have some blue, the specular color is black and the diffuse you can experiment different colours from black to white. You can use the planes with the same texture, other texture or none. The textures that are good for the transparency are variants of Perlin noise (3d turbulence noise). In my Poser gallery are some pictures with fog.

Stupidity also evolves!


RaysOfLight ( ) posted Mon, 20 May 2002 at 6:36 AM

Attached Link: http://www.renderosity.com/viewed.ez?galleryid=186859&Start=1&Sectionid=21&WhatsNew=Yes

file_9086.JPG

hey, that mist looks great the making of it sounds a bit complex though :p here's my pic, it looks okay, but not quite right and the mist down the bottom right hand corner is messed up


kawecki ( ) posted Mon, 20 May 2002 at 6:50 AM

You must hide the fog surface edges, rotate, hide behing the rock elevations, etc.

Stupidity also evolves!


RaysOfLight ( ) posted Mon, 20 May 2002 at 8:14 AM

? what do you mean? what edges?


kawecki ( ) posted Mon, 20 May 2002 at 5:44 PM

file_9087.JPG

There edges are where the surface of the fog ends, unless it is a closed surface as a sphere.

Stupidity also evolves!


EricofSD ( ) posted Mon, 20 May 2002 at 9:34 PM

I've used sphere's, cone's, and rocks to put the cloud texture on. If you want some irregular shape, try the rocks. Remember, each time you click on the rock object it provides a different shaps so bring in a bunch and ditch the ones that you dont' like. Experiment with the textures. Cloud textures are fun especially when you tweak it in the texture editor, but I've also found that some non cloud textures work well too. It takes time. No pain no gain.


Lightpen ( ) posted Mon, 20 May 2002 at 10:30 PM

Hi, I found that the sphere stretched to a tube that is round on the ends, rotated by its axis and expand the tube or squash the tube does great. The gray blue smoke might be a good one to experiment with. This is the one I use. The edges do not show with this useage. Increasing and decreasing the frequency is also a very effective way to change the appearance of the mist or fog or.......... Hope this helps. Lightpen.


Patrick_210 ( ) posted Tue, 21 May 2002 at 10:27 PM

If you go to my gallery and click on "Clear Runnin' Stream", I have posted in detail how I made the mist for the waterfall.


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