// Copyright 2014 The Flutter Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // @dart = 2.8 import 'package:flutter/animation.dart'; // The easing curves of the Material Library /// The standard easing curve in the Material specification. /// /// Elements that begin and end at rest use standard easing. /// They speed up quickly and slow down gradually, in order /// to emphasize the end of the transition. /// /// See also: /// * <https://material.io/design/motion/speed.html#easing> const Curve standardEasing = Curves.fastOutSlowIn; /// The accelerate easing curve in the Material specification. /// /// Elements exiting a screen use acceleration easing, /// where they start at rest and end at peak velocity. /// /// See also: /// * <https://material.io/design/motion/speed.html#easing> const Curve accelerateEasing = Cubic(0.4, 0.0, 1.0, 1.0); /// The decelerate easing curve in the Material specification. /// /// Incoming elements are animated using deceleration easing, /// which starts a transition at peak velocity (the fastest /// point of an element’s movement) and ends at rest. /// /// See also: /// * <https://material.io/design/motion/speed.html#easing> const Curve decelerateEasing = Cubic(0.0, 0.0, 0.2, 1.0);