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

cubicIn detail::cubicInEasing cubicIn {} inlineconstexpr Cubic polynomial easing (t³) with moderate acceleration. The cubicIn easing function uses a cubic power curve for acceleration, providing smooth, noticeable easing that's more pronounced than quadratic but less extreme than quartic or exponential. Characteristics: Polynomial acceleration with power of 3 Balanced between gentle and dramatic Widely used and well-understood Good default for many animation types This easing is ideal for: Standard UI animations: Menus, panels, overlays Easing beginners: Easy to understand and predict General-purpose acceleration: Versatile for many contexts Medium-length animations: 200-500ms durations CubicIn is a popular choice because it provides clear easing without being subtle (like quadratic) or extreme (like quartic/exponential). Mathematically: f(t) = t³ // Dropdown menu opening auto height = tweeny::from(0.0f) .to(200.0f) .via(easing::cubicIn) .during(30U) .build(); See also cubicOut For cubic deceleration cubicInOut For cubic motion at both ends quadraticIn For gentler acceleration quarticIn For stronger acceleration Visualize at https://easings.net/#easeInCubic