Painted Sky?

[danb]

if you have bodypaint you could adjust the uv mesh to move the sky object to suite your scene. try that if you can.

[AdamT]

Does your canvas have the proper dimensions and resolution for spherical mapping? The tex will have to be pretty big in order to avoid pixelization. You can move it around on the sphere or sky object by playing with the texture tag's offset and scale functions.

[bobtronic]

Sometimes you don't even have to use a sky- or sphere
object. A simple plane could be enough. Just make big
enough to cover the screen. As far I know the sky in
Rustboy isn't a sphere. Definitive not in the little sky-
girlie animation.

Bob

[JamesMK]

bobtronic is correct here IIRC. Planes is the way to go. Clouds with alphachannel, on a multitude of planes.

[AdamT]

A floor object (or multiple) can also work very well as a sky, since it recedes infinitely towards the horizon. Just elevate it and tilt it down.

[neods]

What size should the "painting" be if i want it to be mapped in to a sphere? The resolution of the final animation is 758x420. I would like to be able to rotate the camera in anyway and shoot from any side of the scene. SO i think sphere mapping would be good here? right?

[AdamT]

Originally posted by neods
What size should the "painting" be if i want it to be mapped in to a sphere? The resolution of the final animation is 758x420. I would like to be able to rotate the camera in anyway and shoot from any side of the scene. SO i think sphere mapping would be good here? right?

The bitmap should be twice as wide as it is tall, and you only need to paint the sky on the top half, since the bottom will be obscured with a ground plane or some kind of terrain. The actual pixel demensions depends on the smallest field of view of your camera--figuring that the tightest zoom will show the most pixelization. I would experiment with a test pattern or texture and see how it looks before painting the real texture. I suppose I'd started out at something like 3000 x 1500 and see how that works.

Also, if the camera will be pointing anywhere near straight up you'll get some ugly distortion unless you warp the image for spherical projection. You'll want to wind up with a longitude/latitude map. You can make these with Panotools and I'm sure some other image editing and stitching apps. Another option, if you have Advanced Render, would be to paint the texture on a square canvas, use PS' polar coordinates filter, and then use Cinema's HDR convert filter to convert that to longitude/latitude.

[kiwi]

The plugin skyshader {free at plugin cafe} which I think is 8 friendly {dont quote me on that} is capable of doing a nice job of sky with some tweaks,then you dont have to worry about all of the bitmap sizing and messing about.



What environment is your sky set in?,reason I ask is because haze or oxygen will sort most of your problems,and if you use bitmap a layer of the same again can also solve most problems.

[neods]

Thank for the replys.

The scene is in a desert. so there wount be much haze or anything. But I want to paint the sky and want it to be "painterly" so i dont know if skyshader can do that. I'll try that too.

And i have Advacer Render module. So i will try that techinique too.

[caraffi]

here's some nice skys

http://1000skies.com/fullpanos/index.htm

might find a few to your liking

[neods]

Thanks for the link man, its perfect for me.. :applause: :applause: :applause: :drool:

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