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# 1 19-10-2003 , 10:22 AM
sporktine's Avatar
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Rendering - Creating a camera facing shader

I'm trying to create a nice planet with good atmosphere. I've made three concentric spheres, the smallest a planet skin, the next two slightly bigger than the last and i intend them to have camera facing shaders, so that the atmosphere is thickest around teh edges. I had managed this once in 4.0 but forgot how I did it. I'm in 5 now and a bit fuzzy on the use of render nodes for this. Any ideas?

Thanks..

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# 2 19-10-2003 , 10:29 AM
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You could use the Sampler Info node for this. Use it's facing ratio to control a Ramp's V coordinate and then the Ramp's color to control the shader's Transparency. Can't check right now but you may need to add a Set Range node between the Sampler Info and the Ramp to scale the facing ratio to 0 - 1 (it's -1 to 1 by default if i remember correct).
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# 3 19-10-2003 , 10:30 AM
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durr

found it...

Map Transparency to a Sampler Info node, using Facing Ration connected to Transparency-RGB.

thx anyway

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# 4 19-10-2003 , 08:00 PM
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wow, yours is a better solution, am checking it out. thanks!
 
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