Quote:Original post by medevilenemy
Now I'm off to make the ripples stick to the surface (basically: looking for a formula giving the radius of a small circle of a sphere given the distance of said small circle from the center of the sphere)... or something with similar effect.

Since we've gotten this far, we might as well go ahead and try to figure this out as well :)

I think this should be as simple as:

ring_effect_radius = sqrt(sqr(shield_radius) - sqr(distance_to_ring_effect));

This from the fact that the vector from the sphere center to the effect center and any vector from this center perpendicular to the sphere surface form two legs of a right triangle whose hypotenuse has length shield_radius. Letting a represent the length of the first leg and b the length of the second, we have:

a2 + b2 = r2b2 = r2 - a2b = sqrt(r2 - a2)

My brain's kind of shot for the day, so I offer no guarantee that this is correct. But maybe it'll at least get you moving in the right direction...

Quote:Original post by medevilenemy
Here's a quick little video I whipped up to demonstrate the effect, Its not much... but I'm still very pleased with the effect.

Looks good! :)