END OF AN ERA, FRACTALFORUMS.COM IS CONTINUED ON FRACTALFORUMS.ORG

Rendered by my Julia3D software, ray tracing mode, ambient occlusion with no directional light, one minute a frame.

This is based on Quaternion Multiply operation, 5 times for each iteration:
Quaternion operator *(const Quaternion a, const Quaternion b) { return Quaternion(
         a.y*b.z - a.z*b.y + a.x*b.w + a.w*b.x,
         a.z*b.x - a.x*b.z + a.y*b.w + a.w*b.y,
         a.x*b.y - a.y*b.x + a.z*b.w + a.w*b.z,
         a.w*b.w - a.x*b.x - a.y*b.y - a.z*b.z);}
<a href="https://www.youtube.com/v/PkbYVVlxw0w&rel=1&fs=1&hd=1" target="_blank">https://www.youtube.com/v/PkbYVVlxw0w&rel=1&fs=1&hd=1</a>