three.js outer glow for sphere object?

Question

I'm building some sort of planetary system in three.js and I spent couple of hours looking for a decent solution to get an outer glow on one planet - a sphere object with a texture.

I came across this example http://stemkoski.github.io/Three.js/Selective-Glow.html which kind of does the trick, but the thing is - this form of glow also affects the main 3D object resulting in color change (as seen there).

Another nice glow example can be found here http://bkcore.com/blog/3d/webgl-three-js-animated-selective-glow.html but again it glows the entire region, not only "outer" thing.

I've been reading some discussion thread about "overrideMaterial" property on GitHub but this seems experimental, unused and undocumented... not even sure if this could solve my problem.

Please share your ideas, thanks!

Answer 1

In the example you are referring to, I used a blue glow with additive blending -- if you used a white color instead maybe that would produce the effect you want.