|
请使用QQ关联注册PLM之家,学习更多关于内容,更多精彩原创视频供你学习!
您需要 登录 才可以下载或查看,没有账号?注册
x
) R! \* ~5 B. J/ ]5 N7 [' c' S& Y+ k
. _2 T( \9 f% A7 Y7 G4 E1 f
* z* Z1 z/ v. C8 _! f* a4 n9 @动画库tween.js
3 @8 t" Q+ k/ }
' d; L" B; [( X9 x相关资料 http://robertpenner.com/easing/
. @4 |( [6 e4 C0 o0 E- O9 o( e" |; N- j4 U
& l- n/ j( F B$ V" E) E" P8 s8 wLinear:无缓动效果;
# m% r. u" C5 S/ QQuadratic:二次方的缓动(t^2);3 }" I" O! x9 |2 r
Cubic:三次方的缓动(t^3);
6 a) r& J7 _( ^% @: D" U3 hQuartic:四次方的缓动(t^4);% Q \3 k6 J& D! R) _. q
Quintic:五次方的缓动(t^5);
( n6 B( e" {2 \0 u" OSinusoidal:正弦曲线的缓动(sin(t));
: E* v- f; A; J) k+ b% }' H6 ] ^6 IExponential:指数曲线的缓动(2^t);! H+ K5 I4 H# Q( I2 h; \; Z
Circular:圆形曲线的缓动(sqrt(1-t^2));
4 Q+ `+ a. b* E- Y: d w8 X4 z5 [Elastic:指数衰减的正弦曲线缓动;
& t" Z5 t3 v @; |: H0 h. OBack:超过范围的三次方缓动((s+1)*t^3 - s*t^2);
2 W- m, |( ?) l# p% \9 O, n4 JBounce:指数衰减的反弹缓动。' Z, Q+ Q: u9 q8 e0 G
ps:以上都是自己的烂翻译,希望各位修正。& {& u1 ` R* L# ]9 r
& _" Z( n. \6 ?& m$ U1 C' `
每个效果都分三个缓动方式(方法),分别是: @2 }0 z# Z9 ~/ W6 P2 S
easeIn:从0开始加速的缓动;
# I% _: f+ f5 ZeaseOut:减速到0的缓动;5 X+ S+ A) i0 c6 Q* U _+ x
easeInOut:前半段从0开始加速,后半段减速到0的缓动。) d( P2 \* v$ m* X( h
其中Linear是无缓动效果,没有以上效果。/ M8 P. |+ R8 ?, s7 P' `
) o; {0 w8 i/ z( Y6 c9 k) g
0 R- r5 @3 ~3 E这是as代码,四个参数分别是:
" a$ ^ h7 T2 Y% x2 f6 a' Qt: current time(当前时间);
; H5 R# x7 o) P1 w% Eb: beginning value(初始值);
% T. E" o* z$ Rc: change in value(变化量);5 X P8 ]7 w& [0 Z- Z
d: duration(持续时间)。8 v9 R+ a/ G9 O) ^2 n2 L
ps:Elastic和Back有其他可选参数,里面都有说明。
# B8 v" e' ^' z' e
& u. m& V$ T' o9 b4 u" W那如何在js中利用这些算法呢?可以看到,虽然是as代码,但里面的程序是可以直接放在js里使用的。
6 q. \1 D& y+ p1 g: {5 M* g我们可以定义一个类,把它这部分放在里面:! Q0 I6 \; n6 W! |* r; z0 ~
+ f' z: Y+ A" q& v
) o7 ?" i! ~- m: x3 @3 `4 I: F7 V
! v! W& _" ]" j2 Q: b[mw_shl_code=javascript,true]var Tween = {* Y* l0 c* @+ _ Y$ v3 {
Linear: function(t,b,c,d){ return c*t/d + b; },
& s! _2 {/ M5 J& f7 O Quad: {
: Q1 T: g/ H: E8 |* R0 k' I5 O easeIn: function(t,b,c,d){
! k, @! y! |: k" t, h return c*(t/=d)*t + b;% T, m% R" t# O7 f/ X
},' g" B/ ~, y( r8 \1 I0 p
easeOut: function(t,b,c,d){
3 T0 C! k0 }; @ return -c *(t/=d)*(t-2) + b;, e. }/ }. Q9 V, M0 g" a- Q
},
* w2 M+ w* J; c easeInOut: function(t,b,c,d){
3 V# o8 U$ e& s if ((t/=d/2) < 1) return c/2*t*t + b;! t# U) B& v0 K" U
return -c/2 * ((--t)*(t-2) - 1) + b;! |8 S: ?1 Z. [/ s+ M7 T
}5 [4 g5 ^# X, E- K# I+ @( F
},- \* m% B0 ~5 l; n& v! f1 J
Cubic: {
& y0 o' O5 Q/ S9 I' H9 h; Y5 H- Z- W easeIn: function(t,b,c,d){
0 F* b% B. \5 X2 ]$ k return c*(t/=d)*t*t + b;& v. d E$ k3 o
},
+ ]4 K1 H9 m8 Y1 I9 V easeOut: function(t,b,c,d){
( n1 s6 }/ s- W! m, e return c*((t=t/d-1)*t*t + 1) + b;
' ]2 a. @ H8 H' E+ c5 m },$ l$ x1 I i% N/ k/ M
easeInOut: function(t,b,c,d){ H" d5 l% j! R0 i1 f) M
if ((t/=d/2) < 1) return c/2*t*t*t + b;
" ^+ B, x( `* Z# c9 u- r return c/2*((t-=2)*t*t + 2) + b;- O8 h5 J$ A5 F! l, a
}
" U0 q- H& S6 H l. R/ z },
; q. V/ m( t# F. M/ X" B5 n Quart: {
3 S0 b% N3 D! [% N easeIn: function(t,b,c,d){+ E+ q& `+ x0 }! s/ \5 D# n4 o
return c*(t/=d)*t*t*t + b;
( |8 G2 W( m9 q' Y" U( _2 i4 j },% A# x# ]- F1 r' X: l: Z% _$ D
easeOut: function(t,b,c,d){
$ k( L3 K7 D% Y+ O1 }9 Y return -c * ((t=t/d-1)*t*t*t - 1) + b;
# w8 c/ U8 \3 {9 I' X- I/ g },4 f/ U( z, _" Z8 g, Q( i3 Y
easeInOut: function(t,b,c,d){/ C/ c/ V/ [( j, G% S
if ((t/=d/2) < 1) return c/2*t*t*t*t + b;0 j1 u9 j. n1 V! x5 \, S
return -c/2 * ((t-=2)*t*t*t - 2) + b;
: m! b7 T H9 P0 L# Y }9 h: l% g9 U+ ]5 N: f
},
/ ^. z5 e/ x; f P& M7 \ Quint: {
9 O' y5 q) a. h( @5 s easeIn: function(t,b,c,d){8 z- K" h; K: P8 S, Z, t: A
return c*(t/=d)*t*t*t*t + b;
4 F m& i ^3 H! `& Q },9 v& V& I! H; v7 e: i
easeOut: function(t,b,c,d){
0 k, Y" S) ^) D& X! r return c*((t=t/d-1)*t*t*t*t + 1) + b;% B$ V) S4 l2 A2 m6 q4 ~
},
7 o$ L, Y+ a1 w9 `) s. J easeInOut: function(t,b,c,d){
8 K; P4 i/ W3 f) _6 Q) s if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
2 I0 u, ?* E* M: { return c/2*((t-=2)*t*t*t*t + 2) + b;
W! s/ z% z6 m4 H }5 ~2 q: i% g* |
},: ^! c2 b$ y. O: M( k5 A. y' f
Sine: {: i8 t$ Q* M7 U x1 i3 ^, l. B
easeIn: function(t,b,c,d){
2 l ~- L8 A" a return -c * Math.cos(t/d * (Math.PI/2)) + c + b;$ E0 R: D2 P0 I$ F8 t' g a' J3 f
},* p$ V; b E+ F( ?; H
easeOut: function(t,b,c,d){
# s5 g, H6 O7 ?! u { return c * Math.sin(t/d * (Math.PI/2)) + b;
; z5 Y& p( Q6 z! Z( a4 c },/ e% O% C' ~' q" u7 d* Z" t$ l
easeInOut: function(t,b,c,d){ q! ~, G& s5 a1 x# @( G: [
return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
. D3 ~0 q3 F; ]' f( A/ d0 x6 d8 m) D }
$ F/ p+ s8 i; s+ I5 L },
1 Y, |& w; I) _' e' } Expo: {
; O% z( D5 u/ P4 s easeIn: function(t,b,c,d){% m9 v! I% @; x9 U
return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
- z( y Y; `: o },% l Q# ]" s! r$ J, d
easeOut: function(t,b,c,d){
& H- | T6 M9 N return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
4 `- J) x8 E% E5 `4 `" ~5 L }," V2 b3 z. D! n' s# A
easeInOut: function(t,b,c,d){
; Q- ^+ i6 E) H/ B7 X% r' ~4 @- ^ if (t==0) return b;" ~$ n5 e0 D; b: O
if (t==d) return b+c;) E F' o7 Y o3 i6 [' g) y+ t
if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;9 M( S/ Z- [8 T
return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
* @, T4 f1 E" k; n2 [ }
" w) q( M k& N4 d1 S& j. r },
8 N7 [9 t' a9 b: r$ \( H" l0 c Circ: {
v8 `6 z9 }( ? h8 [0 J" l# q easeIn: function(t,b,c,d){
9 d d9 b+ ]% R7 u return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
! [* v+ M. a: G* }$ q },7 x+ t, \# I' t6 o0 i& g" X/ Z, g
easeOut: function(t,b,c,d){
6 e. e. L1 c; ^; I1 q return c * Math.sqrt(1 - (t=t/d-1)*t) + b;/ c7 c; o/ D, N5 Y
},& l" Y, q% C' t+ d5 J
easeInOut: function(t,b,c,d){
/ P# s; x7 X7 V+ K5 p" ^* h if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
" V$ `7 |" q5 u* U return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
, \- Y9 J6 d# z- h( O% ~ }3 ]6 _& j1 k4 ?8 {
},
/ Z- U3 j c7 t9 W1 Y$ K" A: b Elastic: {
, A q9 G1 l! C$ T6 F2 W% `) t0 ^ easeIn: function(t,b,c,d,a,p){
* w3 o+ V; ?" w. o* V" ] if (t==0) return b; if ((t/=d)==1) return b+c; if (!p) p=d*.3;
7 J5 s4 A7 ^% h' N6 R, X if (!a || a < Math.abs(c)) { a=c; var s=p/4; }) m k5 P4 @% X D: D
else var s = p/(2*Math.PI) * Math.asin (c/a);3 ?7 H3 Y7 q" ^0 e) X0 Z: n9 }+ {
return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
" E$ T. ?4 s; ~$ G6 D },- M% W5 O2 x/ Z! M+ r) b
easeOut: function(t,b,c,d,a,p){
" ]- \8 E/ e" ~ if (t==0) return b; if ((t/=d)==1) return b+c; if (!p) p=d*.3;1 G& }+ v% L# x) ?
if (!a || a < Math.abs(c)) { a=c; var s=p/4; }8 d8 b% Q/ W- P" e6 J5 F4 b: G
else var s = p/(2*Math.PI) * Math.asin (c/a);
+ {% A+ \) Q6 l: r$ [" q return (a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b);0 }1 Z2 w g& b9 Y' p. ?
},3 Z- D2 W5 d2 G# q2 X) g9 X) T% E
easeInOut: function(t,b,c,d,a,p){
P5 x. b* Y& E# n, |7 r if (t==0) return b; if ((t/=d/2)==2) return b+c; if (!p) p=d*(.3*1.5);3 u7 Q: j6 F9 p
if (!a || a < Math.abs(c)) { a=c; var s=p/4; }
4 o; P6 I: ~8 h1 i else var s = p/(2*Math.PI) * Math.asin (c/a);
# q3 p4 x) \! d# w if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
! ` p+ a- n3 w3 W1 a6 S return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
2 ] M6 g: {$ J7 ` }
5 p' i3 D: O; ~3 s( [ },
3 K+ E. a' m% \6 r" P8 U- m8 L6 d Back: {
8 ?2 h9 M: }9 [9 X# a easeIn: function(t,b,c,d,s){" }' N9 \8 ~2 ]" \& \$ g* a
if (s == undefined) s = 1.70158;5 I9 n) \- f3 u9 x
return c*(t/=d)*t*((s+1)*t - s) + b;
5 W+ v/ [# D, c+ R/ x/ d! s },
4 ^ c7 T3 z. ] easeOut: function(t,b,c,d,s){
- \) V# k0 o1 e9 c3 X* R if (s == undefined) s = 1.70158;$ w/ p! Q1 e# D0 A/ ?3 ]
return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;! s6 C7 u6 ]# k P, X
},0 P8 u- ], I; K
easeInOut: function(t,b,c,d,s){
, F7 ~/ ^* o; ^6 Q5 t2 R& ] if (s == undefined) s = 1.70158; 7 N/ f$ s% V; |; B
if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
+ m: e* m5 K* W0 O+ y. {4 k9 Y( F return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;: g, ]2 J9 Z- w, C% A6 E3 p
}
) S7 C) O* x7 { },& S/ ~$ \) M. A$ a6 A u( E( _
Bounce: {
6 z# D }) v$ n& {9 M( d! \& ^- L% n easeIn: function(t,b,c,d){
7 }6 C4 G- g4 o return c - Tween.Bounce.easeOut(d-t, 0, c, d) + b;
% N6 p- g! R0 A, \ },5 J" O8 ?+ u+ g5 i0 ?
easeOut: function(t,b,c,d){1 ^* g+ c6 Z1 G& W
if ((t/=d) < (1/2.75)) {( ?7 h2 c, |5 @
return c*(7.5625*t*t) + b;
/ D I% L Z( r5 J! ?' |$ W } else if (t < (2/2.75)) {
: o4 h. p1 g8 F) C4 U& p2 [" \4 ^ return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
" `$ X) s4 \9 x1 c8 `9 Y } else if (t < (2.5/2.75)) {9 L* a: k% E0 L) O
return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
# [" i h" M9 K5 l" W } else {+ ]; ^1 v+ W% p, U! } O9 C% _: L
return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;: {0 o5 q( {! B- C( v
}8 R: v) o" {& U6 r# Y: u7 u( a
},' p& x; C! @1 E# W7 R
easeInOut: function(t,b,c,d){ V$ N- o: O* c; K% y8 E
if (t < d/2) return Tween.Bounce.easeIn(t*2, 0, c, d) * .5 + b;
" T$ n( e: F8 c( F( a. b else return Tween.Bounce.easeOut(t*2-d, 0, c, d) * .5 + c*.5 + b;4 M+ }2 p- ~& o
}1 k6 {* C `5 Q* q1 j& K; S
}
6 ? X) s# ] C4 p}[/mw_shl_code]
2 ~1 t2 e2 Y* n$ A- l |
|