backIn backInOut backOut bounceIn bounceInOut bounceOut byName circularIn circularInOut circularOut cubicIn cubicInOut cubicOut def elasticIn elasticInOut elasticOut exponentialIn exponentialInOut exponentialOut linear quadraticIn quadraticInOut quadraticOut quarticIn quarticInOut quarticOut quinticIn quinticInOut quinticOut sinusoidalIn sinusoidalInOut sinusoidalOut stepped

quinticIn detail::quinticInEasing quinticIn {} inlineconstexpr Quintic polynomial easing (t⁵) with very strong acceleration. The quinticIn easing function uses a power-5 curve, creating the strongest polynomial acceleration. It's more extreme than quartic but less than exponential. Characteristics: Very strong acceleration Polynomial with power of 5 Extremely slow start Dramatic finish This easing is ideal for: Maximum polynomial emphasis: Strongest polynomial option Dramatic effects: Hero animations, focal transitions Long animations: Over 600ms durations Alternative to exponential: Slightly less extreme Mathematically: f(t) = t⁵ // Dramatic hero section reveal auto scale = tweeny::from(0.0f) .to(1.0f) .via(easing::quinticIn) .during(60U) .build(); See also quinticOut For very strong deceleration quinticInOut For very strong motion at both ends quarticIn For slightly gentler acceleration exponentialIn For even more extreme acceleration Visualize at https://easings.net/#easeInQuint