Freya Holmér

freya.bsky.social

29 September 2026 10:52

rotation quaternions without roll form a topological torus in quaternion space c: if you also disallow being upside down, half of this torus is cut away, leaving a squiggly ribbon

Freya Holmér

freya.bsky.social

29 September 2026 10:52

quaternions/4D sphere geometry isn't that complicated! just remember ( 1/√2, 0, 0, 1/√2 ) is a positive and/or negative rotation around X and/or YZ by 90° and/or 45°

Freya Holmér

freya.bsky.social

29 September 2026 10:52

there is no skill these people don't consider a means to an end they want the experience machine they're begging for their AI models to create it, to hook them up to the machine

Freya Holmér

freya.bsky.social

29 September 2026 10:52

given a unit vector (x,y,z), the quaternion (x,y,z,0) is a 180° rotation around that axis which is neat bc you don't need any trig/euler conversion!