Does Anyone know how to give  a sphere in poser 6 a blue haze/glow effect as seen from space on Earth using the nodes in P6? The glow on need be visible at the sphere edges.

Use two spheres, one outside the other.  The inner one is for the planet and the outer is for the atmosphere.  Use an edge blend node to drive the transparency of the atmosphere.  That'll give you a basic start, then you can customise from there depending on what sort of effect you want.

Thanks for helping Ajax.

yeah i understand that part and have experimented but wanted to know if anyone actually knows how to create the planet atmosphere i am describing? In poser 6?

Try attaching the Edge Blend node to the outer sphere.

done that, as thats what i have been experimenting with...any other ideas? Anyone?

it seems poser cannot create/give objects a glow effect!

Depends on the kind of glow you're looking for.

Ambient is the primary means I've used to make things glow, and it works pretty good from what I can tell.

garr, do you have a picture that shows the sort of look you're after?

Hey thanks Ajax....thats really helped....im in the material room tweaking with the nodes to get a similar effect...but yeah i think you sorta hit the nail on the head.

many thanks.

gecco

Cool!  Glad I could help :-)

You need maximum glow near the surface, then fade out at the farthest edge.

Here's my render. I'll post the material file for this next.

Put this on a concentric outer sphere that is 10 % larger than the planet. If your planet ball scale is 200%, then make the glow ball 220%.

You can edit the glow color easily - just go into the material and change the alternate_diffuse color.

nice bagginsbill.

If you have Matmatic beta1, you can try variations yourself. The key to it was the Interpolate.

Here's the script:

eb = EdgeBlend(0,1, 1).asNumber()
f = Clamp(2 * (eb - .5))
f = Interpolate(f, [0, 'd', .2, 1, 'd', .4, .25, 0])

s = Surface(0,0,0,0)

s.Alternate_Diffuse = Bias(Diffuse(), .8)
s.Transparency = Bias(.5 * f, .2)

Oh - one thing I've found is that planet lighting is very different from normal diffuse reflection. You should be lighting the planet with exactly one infinite light at 100%. And you have to bias the diffuse amount as I've done above.

Very cool.  That's the sort of effect I was trying for (but not getting) by having one edge blend feed into another.  I downloaded matmatic yesterday.  I must install it and give it a try.  It sounds great.

i cant get rid of the doc extension?please help.

Maybe you need a new keyboard that comes with a backspace key? 

Pretty slick, Bagginsbill.

can someone post a pic of the mateial room with edgeglow .

Scott8539,

I don't understand what's going on for you.

Right click the link on the attached file.

Choose "Save Target As..." line any other file you want to download.

When the dialog box comes up to ask where to save it, change the name to EdgeGlow.mt5  by simply deleting the last 4 characters of the name.

Why we have this policy that I can't post mt5 files on a poser forum is beyond me. Renaming the file does nothing but confuse people. Honestly I'd post probably 10 times the materials I do now if I didn't have to explain this stuff every time.

I'm certainly not griping at you, scott - please download and I hope my instructions work for you. Then you should be able to use the file and look at it.

However, I suggest that looking at it won't do you much good. It's the math that matters and the nodes don't reveal the math at all. Looking at my script above, you can see that math is very simple. The results shader in the material room is pretty much impossible to understand. I think this one is 18 nodes (not at my Poser pc right now). You should see my shader with 140 nodes in it.

By the way, I didn't have the heart to tell you that nobody should be using this glow thingy on the earth.

The earths atmosphere is generally agreed to be 40 miles thick, although arguably airplanes control surfaces are almost completely useless at only about 25 miles, even at Mach 5.

Anyways, since the diameter of the earth is about 8000 miles, then the ratio of atmosphere to diameter is 40/8000 or 1/200. So if you are rendering an earth in your picture that is 200 pixels across, then the atmosphere should be 1 pixel thick.

I made the shader do much more than that, so you could see it.

It would be easy enough to use a different ratio, but you'd not get to see it unless you were doing a close orbit shot. If anybody wants that, let me know.

thanks bagginsbill,that did it.now i know how to do it next time.thanks agian.

Thanks bagginsbill, 

The different ratio mat file sounds cool could you add a link on this web page so i could try it out?

As i am experimenting with close up shots of planets.