step

Function

step(start: ~T, end: ~T, t: float) -> ~T

Step interpolation with instant transition at midpoint.

This is a discrete interpolation function that switches from start to end at t=0.5, with no gradual transition. Used for non-numeric values that cannot be smoothly interpolated (e.g., strings, enums, objects).

Parameters

start: Starting value of any type
end: Ending value of any type
t: Interpolation parameter (0.0 to 1.0) - t < 0.5 returns start - t >= 0.5 returns end

Returns

Either start or end value (no intermediate values)

Examples

step("hello", "world", 0.3)
    'hello'
    step("hello", "world", 0.5)
    'world'
    step("hello", "world", 0.8)
    'world'
    step(True, False, 0.49)
    True

Notes

The transition happens exactly at t=0.5 (inclusive of end).