Higher-Order Interpolation (HOI) Tests

See github.com/arrowtype/NLI-test for details and a written explanation.

Quadratic Example

Allows curved interpolations while being reasonably simple to design. Has some limitations in rotation.

Cubic Example

A bit harder to make, but able to do curvier interpolations up to 180-degree rotation (beyond this, you would need an additional dimension or an additional step).

Linear Example, for comparison

Much simpler to make with existing tools and useful for many things, but totally unable to do rotation.

HOI was discovered & detailed by Underware. These simple explorations were made by Arrow Type.