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

bounceOut detail::bounceOutEasing bounceOut {} inlineconstexpr Bounce easing simulating a ball dropping and bouncing to rest. The bounceOut easing function creates the classic ball-drop effect where an object bounces several times with decreasing height before coming to rest. This mimics real-world physics of an inelastic collision and is one of the most recognizable easing patterns. Characteristics: Multiple discrete bounces with decreasing amplitude Simulates impact and energy loss Creates playful, physical motion Widely recognized and understood by users This easing excels at: Object drops: Items falling into place Landing animations: Characters, UI elements touching down Playful interactions: Buttons, icons, notifications Game elements: Collectibles, power-ups, score displays Error/success feedback: Visual confirmation with personality Cartoon physics: Exaggerated, entertaining motion BounceOut is more popular than elasticOut when you want discrete impacts rather than smooth oscillation. It conveys weight and physicality better than spring-based easings. The bouncing creates natural emphasis on the final position, making it excellent for drawing attention to where something lands. // Notification dropping in from above auto y = tweeny::from(-100.0f) .to(0.0f) .via(easing::bounceOut) .during(45U) .build(); // Button that bounces into place auto scale = tweeny::from(0.0f) .to(1.0f) .via(easing::bounceOut) .during(40U) .build(); See also bounceIn For inverse bouncing at the start bounceInOut For bouncing at both ends elasticOut For smooth spring-like alternative Visualize at https://easings.net/#easeOutBounce