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

circularOut detail::circularOutEasing circularOut {} inlineconstexpr Circular easing based on quarter-circle arc for smooth deceleration. The circularOut easing function decelerates following a circular curve, creating smooth, natural-looking motion that settles gently to rest. Popular for UI animations requiring moderate deceleration without dramatic emphasis. Characteristics: Smooth, continuous deceleration Natural feeling without being too soft or aggressive Balanced between gentle and pronounced Widely used in production interfaces This easing excels at: Modern UI animations: Cards, panels, menus Material Design patterns: Following Google's motion guidelines Content transitions: Page changes, tab switches Professional applications: Business and productivity software General-purpose motion: Versatile for many animation types CircularOut works well in most contexts. It's less dramatic than cubic but with smoother deceleration than quadratic. // Menu panel sliding in auto x = tweeny::from(-300.0f) .to(0.0f) .via(easing::circularOut) .during(35U) .build(); See also circularIn For circular acceleration circularInOut For circular motion at both ends quadraticOut For gentler alternative cubicOut For more pronounced alternative Visualize at https://easings.net/#easeOutCirc