A few refraction index functions

[zsparal]

diff = distance(lens.origin, p);
if (diff > 0.001){
    index = 1.0 / diff;
} else {
    index = 1000;
}

Try these in the diff > 0.001 part of the if branch:

• index = exp(diff) / diff;
• index = 1.0 / sqrt(diff);
• index = 1.0 / cbrt(diff);
• index = erf(1.0 / diff);
• index = exp(1 / cbrt(diff)) * (1 / diff);
• index = 1.0 / ((diff) / (diff + 1));
• index = 1.0 / ((diff * (6.2 * diff + 0.5)) / (diff * (6.2 * diff + 1.7) + 0.06));
• index = sqrt(length(p));

Doesn't fit on a list:

index = 0.5 * (fabs(0.5 * diff) + sqrt(1 - (pow(fabs(fabs(diff) - 2) - 1, 2))) -
        1 / 112 * (3 * sqrt(33) - 7) * diff * diff + 3 * sqrt(1 - (diff / 7) * (diff / 7) ) - 3) *
        ((diff + 4) / fabs(diff + 4) - (diff - 4) / fabs(diff - 4)) - 3 * sqrt(1 - (diff / 7) * (diff / 7));
index = fabs(index);

[leios]

Haha, some of these look like loads of fun! I'll try a few of these on stream tomorrow, for sure!

Thanks again for all your help!

[zsparal]

Most of them are fairly similar, but they still look cool.

[leios]

Yeah, I will certainly be checking them out. I never really thought about doing raytracing art before...

I also found the formula for the refractive index of the invisible lens, so I'll be trying that tomorrow too!

Super excited!

Thanks again!