|
|
还没有账号?赶快去注册吧!
您需要 登录 才可以下载或查看,没有账号?立即注册
×
, o: B( U0 }# ?$ Q: v
这些天想了想怎么给LCD做丝滑的动画,稍微想了想,便有了下面这些代码。
. y f" D4 I7 h" h+ s- importPackage (java.lang);% D8 D7 k B" ^) u
- importPackage (java.awt);
5 z& g1 g& [8 {' \9 X, [ [% G
, h( }' J. c7 M- |( ]- include(Resources.id("mtrsteamloco:library/code/face.js"));7 i, ]) g: ?+ M* J+ P
- 2 q) U9 L/ \( `
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);! N: M& t: V+ K5 G0 }
3 K+ W6 L1 w: e, I- function getW(str, font) {
( y% G! d. c x g: h! U+ r - let frc = Resources.getFontRenderContext();7 H! I$ {& ~) s2 u7 l
- bounds = font.getStringBounds(str, frc);% i3 |$ k+ v6 a* K |4 f. c
- return Math.ceil(bounds.getWidth());3 R$ M! ~' Z! `& U9 e
- }
; W9 b1 Y t0 U/ w - - ]; U- a# o6 ]1 e1 V3 V
- da = (g) => {//底图绘制: G1 _3 S6 i5 {1 d. j) @
- g.setColor(Color.BLACK);3 i1 |2 A s$ D* P
- g.fillRect(0, 0, 400, 400);' D3 q" p @; z7 {8 _' ~+ ]
- }6 R; N& Z+ `" k& I, j4 x. c+ f8 N
* k0 N5 L! P( w' _4 u# [: ]- db = (g) => {//上层绘制
. T+ a9 X& P& R, X P - g.setColor(Color.WHITE);
* w" K q* f" _" D( s# o - g.fillRect(0, 0, 400, 400);
. c$ i* F- C) [* A3 m - g.setColor(Color.RED);0 s# |" y6 w6 ?; b, y& F
- g.setFont(font0);
( B {% v/ E/ K( A& M+ W( W - let str = "晴纱是男娘";
2 @4 u# c. {2 M1 g - let ww = 400;$ }& q% o8 H( I
- let w = getW(str, font0);
, N2 B9 w P0 ~: k - g.drawString(str, ww / 2 - w / 2, 200);7 U4 g9 c8 ~% Z. I$ U
- }! T1 P3 p& g+ ^; b
, o' F$ D- Q5 s h2 j7 Y$ |- const mat = new Matrices();8 H* Y: [( q* {, g
- mat.translate(0, 0.5, 0);
8 L+ B( u+ i4 W& U
3 Q: w( O: p6 `& |0 ?- function create(ctx, state, entity) {
6 @. H ]% C& P. ^- P - let info = {
, n) c3 f' t& C8 W$ y - ctx: ctx,
5 r f" N5 F" p1 B4 P* ] - isTrain: false,
, L$ `* r! y$ u! o" m1 f& ]& ~& z/ l - matrices: [mat],% n( W& _& a6 q3 w5 r1 V$ [
- texture: [400, 400],: \7 v9 \9 c( K9 B$ \
- model: {
/ o0 e U) ]+ H, M! x0 a# U - renderType: "light",
; F7 _2 }: S. S7 s ^ \5 l - size: [1, 1],* ^" a8 Z7 S, E: Q
- uvSize: [1, 1]( j1 X1 o3 T. g2 o7 n
- }2 v% w. U! ~5 z, X
- }9 g% m5 |! y p; y' C" k! l' N" P
- let f = new Face(info);% w9 z* C, S y" X# }& C' j4 O
- state.f = f;
1 X% B$ n) p( Y1 d3 x
( ]$ c- M) n$ D. K- let t = f.texture;
$ b. p7 a! x5 k - let g = t.graphics;
% q" l* o5 T4 x. I: w! m3 _ - state.running = true;. u( d# H& V: W0 U/ C, k$ g# D
- let fps = 24;7 J' e: d+ N2 c- Y1 N p0 m Z
- da(g);//绘制底图
$ M/ H7 ], `; }2 T7 }2 A - t.upload();
. v6 {( B! N7 V - let k = 0;- U9 m/ z, h$ l* z# T
- let ti = Date.now();, V- Y6 W1 ? @ R) ^" T
- let rt = 0;
7 N% c1 m; j; } - smooth = (k, v) => {// 平滑变化( r+ @4 z" b% k7 J; G
- if (v > k) return k;
5 Z8 V" K0 s0 M4 i; {& J, S( V - if (k < 0) return 0;+ B0 A- t+ e! R7 u) ~, [
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;/ c5 x$ Q) N- ]" O3 g
- }1 s( P: w/ s9 W5 J2 o$ B
- run = () => {// 新线程
7 T- v& ]5 M6 a0 M. B - let id = Thread.currentThread().getId();
2 j$ M8 q% P* i3 r b) m! h - print("Thread start:" + id);
4 y4 v& ~% B. ~: W6 L- ]* e" I, p5 K - while (state.running) {; ^6 g$ t1 N8 l' [ ^
- try {) k( i! a; H0 q* Q6 f
- k += (Date.now() - ti) / 1000 * 0.2;
. n" u! B2 p9 H- d - ti = Date.now();
8 o9 h0 S7 D" ? - if (k > 1.5) { H' |, A: ]" P
- k = 0;
+ Y- q+ t# E0 o) ^- u3 [8 o) p/ r# s - }; H. F) \, h- y. w, s, G" [0 v( p6 u2 |
- setComp(g, 1);8 o; X* R) j+ C1 v& U
- da(g);
! T7 e3 J2 z4 e3 X; u5 M/ b: N - let kk = smooth(1, k);//平滑切换透明度2 k8 x1 C- B1 W( a' c9 |1 a% I
- setComp(g, kk);
\& Y' v, q2 a& p* y - db(g);; J# |$ p! ]' m P5 \ m; ~2 |6 @/ J
- t.upload();
: K- m3 a5 l! u1 D - ctx.setDebugInfo("rt" ,Date.now() - ti); c6 @7 C. `1 Y+ |% v
- ctx.setDebugInfo("k", k);
1 j i( t; }! z; e L - ctx.setDebugInfo("sm", kk);7 E& L% n) q7 _9 j
- rt = Date.now() - ti;
O9 ^" P* [% i - Thread.sleep(ck(rt - 1000 / fps));% @; L* v f6 i, s6 G
- ctx.setDebugInfo("error", 0)
4 K+ ?: R ]; j' d6 _ K: G/ D - } catch (e) {! u1 `5 f- q6 x- a4 j
- ctx.setDebugInfo("error", e);. K$ A. X: ?/ E6 \+ L2 v
- }
( M! t1 u" b4 C! x - }+ l8 I8 W, K% t# u" a9 v, Y6 `
- print("Thread end:" + id);
6 |# b- L5 ]" ?# B f* b - }' P3 N. F% Q* P6 p, r3 F
- let th = new Thread(run, "qiehuan");
4 k5 s- t: Y. V4 Q - th.start();
3 S) b2 j" ?- o: A8 z) y$ t - }7 p9 I; d& t( o" f% B
3 i$ @/ A: F' H' i* q6 k: d- function render(ctx, state, entity) {
+ K# L# ]& s: \, W - state.f.tick();
1 p4 o9 ~3 N$ _" A - } w3 S% P# h9 @
- : Y9 b1 Y& X, D2 I$ F3 {. Z
- function dispose(ctx, state, entity) {
% [- ^+ p% T8 U7 |; W. v - print("Dispose");
& V' `$ P: [- o( `% J1 A, A2 T1 t - state.running = false;
5 [. S7 t% Q. @- m7 Z# X - state.f.close();& V+ V3 e- }: W3 X$ y) y
- }
4 Q$ l! \; ^7 L2 p! S - ( ~6 V( e5 X2 S; `
- function setComp(g, value) {
8 t$ O8 E. t3 y1 t+ j7 X5 L' e - g.setComposite(AlphaComposite.SrcOver.derive(value));. f& o, o: _; g
- }
复制代码 2 x" C+ M3 z9 a% ]1 g
写了这么久的js,我便渐渐发觉使用 render 来写更新内容有局限性,比如说会拉高延迟.....等等(但可能也没什么影响?)。在这里我用新建 Thread (线程) 然后在新的 Thread 里来处理图片更新逻辑,实现丝滑切换。
+ N$ V# _8 p# f( A0 ]2 ?0 H& i! O: |; H5 s
* u. A! L* M& A: r5 e顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)0 Y7 ]6 {; d! z
|
|