ElasticEaseIn()

static constexpr Fxp SRL::Math::Interpolation::ElasticEaseIn ( const Fxp & start, const Fxp & end, const Fxp & t )

inlinestaticconstexpr

Elastic ease-in interpolation for spring-like motion.

Implements elastic easing with configurable period and amplitude. Uses quadratic approximation of sine for efficiency.

The easing produces this motion:

• Multiple overshoots
• Decreasing amplitude
• Final snap to position

Common uses:

• Menu bounces
• Character stretching
• Projectile charge-up
• Spring animations

Parameters

start	Starting value of the interpolation
end	Ending value of the interpolation
t	Interpolation factor in range [0,1]

Returns

Eased value

Note

Uses approximated sine to avoid trigonometric tables