TransitionDirection

Enum

Source: TransitionEffect.h

Description

Direction of the transition effect.

Out: starts fully visible and transitions to black/invisible. In: starts black/invisible and transitions to fully visible.

Methods

uint16_t smoothstepQ8(uint16_t t)

Description:

Q8.8 smoothstep easing function for transition progress.

Parameters:

• t: Q8.8 input in [0, 256] (0.0 to 1.0 in fixed point).

Returns: Q8.8 eased value in [0, 256].

Implements smoothstep(t) = t^2 * (3 - 2t) using fixed-point Q8.8 math: result = (t^2 * (768 - 2t)) / 65536, clamped to [0, 256].

Provides smoother acceleration/deceleration than linear interpolation, used by DiagonalWipe to avoid harsh pixel boundaries during the wipe.