Simplified Flutter stagger animation

flutter animation set

simplified flutter stagger animation.to drive the flutter stagger animation through a timeline in the form of an animation configuration.you can

1. uses the existing animation widget of flutter animation set
2. use flutter animation set to create a new animation widget
3. contribute your flutter animation set widget
4. watch all of the curves of flutter in example

�� installing

dependencies:
  flutter_animation_set: ^0.0.4

⚡ use animation set widget

1、import

import 'package:flutter_animation_set/widget/transition_animations.dart';
import 'package:flutter_animation_set/widget/behavior_animations.dart';

2、use

child: yyrotatingplane(),

3、road map

transition_animations

yyrotatingplane ✅	yydoublebounce ✅	yywave ✅	yywanderingcubes ✅	yyfadingfour ✅	yyfadingcube ✅
yypulse ✅	yythreebounce ✅	yythreeline ✅	yycubegrid ✅	yyrotatingcircle ✅	yypumpingheart ✅
yyripple ✅	yyrotateline ✅	yycubefadein ✅	yyblinkgrid ✅

behavior_animations

yyfadebutton ✅

yysinglelike ✅

yylove ✅

yyspringmenu ✅

yyfoldmenu ✅

4、thanks

• flutter_spinkit

⚡ create animation set widget by yourself

1、import

import 'package:flutter_animation_set/animation_set.dart';
import 'package:flutter_animation_set/animator.dart';

2、use widget

animatorset(
    child: widget.child,
    animatorset: [],
    animationtype: animationtype.reverse,
    debug: false,
)

animatorset supported properties

property	mean	default
child	the component that performs the animation	not have
animatorset	collection of animation	not have
animationtype	controls the type of animation execution	animationtype.repeat
debug	the output log	false

the properties of the animationtype

property	mean
repeat	repeat animation
reverse	rewind animation
once	one play animation

3、use animatorset api

about animation widget

widget	mean	description
w	width	control the change of width. if it is scaled up, sx is recommended instead
h	height	control the change of height. if it is scaled up, sy is recommended instead
p	padding	control padding changes
o	opacity	control opacity changes
sx	scalex	scale the x-axis with the midpoint
sy	scaley	scale the y-axis with the midpoint
rx	rotatex	rotate the x-axis with the midpoint
ry	rotatey	rotate the y-axis with the midpoint
rz	rotatez	rotate the z-axis with the midpoint
tx	transitionx	translate the z-axis with the midpoint
ty	transitiony	translate the y-axis with the midpoint
c	color	control background color changes
b	border	control background border changes

about support widget

widget	mean	description
delay	delay timeline	extend the timeline to wait
serial	combine animation	through the combination of animation, to achieve the effect of playing together

⚡ for example

1、create timeline

1. this figure shows that the core components of the animation are made according to the timeline
2. in the process of execution, there are 6 animations simultaneously, and the total animation duration is 900ms
3. scaley components are used to scale up and down in order to make each rectangle have a wave effect
4. drag the timeline with the delay component to reach the animation duration of 900ms

2、build animatorset

assemble our animation component using the diagram above, which has the following properties

• from:animation initial value
• to:end of animation value
• duration:animation time
• delay:the delay in actually executing the animation
• curve:animation interpolator

animatorset: [
  delay(duration: before),
  sy(from: 0.8, to: 1.6, duration: 200, delay: 0, curve: curves.linear),
  sy(from: 1.6, to: 0.8, duration: 200, delay: 0, curve: curves.linear),
  delay(duration: after),
],

the object that the animation executes is container rectangle

widget makewave(int before, int after) {
  return animatorset(
    child: container(
      color: colors.white,
      width: 5,
      height: 15,
    ),
    animatorset: [
      delay(duration: before),
      sy(from: 0.8, to: 1.6, duration: 200, delay: 0, curve: curves.linear),
      sy(from: 1.6, to: 0.8, duration: 200, delay: 0, curve: curves.linear),
      delay(duration: after),
    ],
  );
}

3、convert to code

class yywave extends statelesswidget {
  @override
  widget build(buildcontext context) {
    return container(
      width: 40,
      height: 40,
      child: row(
        mainaxisalignment: mainaxisalignment.spacebetween,
        children: <widget>[
          makewave(0, 500),
          makewave(100, 400),
          makewave(200, 300),
          makewave(300, 200),
          makewave(400, 100),
          makewave(500, 0),
        ],
      ),
    );
  }
}

4、done

more

1、combination of animation

the scaling effect requires scaling both the x and y axes, uses the serial widget

animatorset: [
  serial(
    duration: 2000,
    seriallist: [
      sx(from: 0.0, to: 1.0, curve: curves.easeinout),
      sy(from: 0.0, to: 1.0, curve: curves.easeinout),
      o(from: 0.5, to: 0.0, delay: 1000, curve: curves.easeinout),
    ],
  ),
],

done

2、time-lapse animations

deal with the delay attribute when you actually do the animation

class yythreeline extends statelesswidget {
  @override
  widget build(buildcontext context) {
    return container(
      width: 40,
      height: 40,
      child: row(
        mainaxisalignment: mainaxisalignment.spacebetween,
        children: <widget>[
          makeline(0),
          makeline(50),
          makeline(100),
        ],
      ),
    );
  }
}

widget makeline(int delay) {
  return animatorset(
    child: container(
      color: colors.white,
      width: 10,
      height: 5,
    ),
    animatorset: [
      ty(from: 0.0, to: 5.0, duration: 400, delay: delay, curve: curves.fastoutslowin,),
      ty(from: 5.0, to: 0.0, duration: 400, curve: curves.fastoutslowin,),
    ],
  );
}

done

3、reverse animation

after the animation can be played, set animationtype.reverse through the animationtype property, making the animation play back

class yyfoldmenu extends statelesswidget {
  @override
  widget build(buildcontext context) {
    return container(
      width: 40,
      height: 40,
      child: column(
        mainaxisalignment: mainaxisalignment.spacebetween,
        children: <widget>[
          makefoldmenu(0, 40),
          makefoldmenu(100, 26.0),
          makefoldmenu(200, 12.0),
        ],
      ),
    );
  }
}

widget makefoldmenu(int delay, double toy) {
  return animatorset(
    animationtype: animationtype.reverse,
    child: container(
      decoration: boxdecoration(
        color: colors.white,
      ),
      width: 30,
      height: 10,
    ),
    animatorset: [
      serial(
        duration: 2000,
        delay: delay,
        seriallist: [
          ty(from: 0.0, to: toy, curve: curves.elasticinout),
          sx(from: 1.0, to: 0.1, curve: curves.elasticinout),
          sy(from: 1.0, to: 0.1, curve: curves.elasticinout),
        ],
      ),
    ],
  );
}

done