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) x7 Q1 I1 S. Z$ V. z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。
5 C, s5 m3 t+ L2 t- importPackage (java.lang);
% |* {! h# ~. i - importPackage (java.awt);# E/ ?( Y2 w' L2 M% {
- " k) a' @. v$ E, s( v6 q
- include(Resources.id("mtrsteamloco:library/code/face.js"));
% O% l) n1 P) Y: f b# [5 `3 t. b
; Q* x: q* }6 y# @0 T" _- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
. I1 O5 R, h g4 }# [! ^, R0 S0 [% o - # y: e2 `0 w9 _! x1 O
- function getW(str, font) {
+ d, t" g: ~7 q' N5 J* Q - let frc = Resources.getFontRenderContext();9 U) X n! ^0 N% g
- bounds = font.getStringBounds(str, frc);' j$ l% p6 S; P I" w) J2 y
- return Math.ceil(bounds.getWidth());
1 [8 m7 O% D8 m4 T6 j( { - }4 V. e9 v3 L- ^& w; [
7 R2 r$ |, @9 d9 F4 @0 i- da = (g) => {//底图绘制: G4 q9 u/ L! `0 P2 K ^1 N" f5 b9 O
- g.setColor(Color.BLACK);* `4 {0 x5 \1 l9 D! Q3 k+ j
- g.fillRect(0, 0, 400, 400);# N! i, u, ]2 X4 Q+ v$ F
- }
# k' c' C9 @# D; p. s5 I
$ y0 S" o- l$ E" f& ]* ^- db = (g) => {//上层绘制/ F7 @0 E1 n7 O
- g.setColor(Color.WHITE);. [7 D7 N( L- @& Z$ E; V
- g.fillRect(0, 0, 400, 400);4 c0 `6 A! n6 x1 ^
- g.setColor(Color.RED);
, P; V% s& W- z$ H5 s - g.setFont(font0);( P* p# `) A; f1 w; k. o4 L
- let str = "晴纱是男娘";
' E; S* B5 Y: E. w - let ww = 400;; U8 v5 b! W8 r' ]4 b" T
- let w = getW(str, font0);6 v& | }2 w% j9 {& l: A
- g.drawString(str, ww / 2 - w / 2, 200);: E2 f% `1 g2 q, I9 r4 u0 s$ @
- }
0 g* v2 J; h: P. p6 e
* f3 Z; T8 e( A- const mat = new Matrices();
& ^6 E, y4 g" Z) c) }8 S - mat.translate(0, 0.5, 0);
( Z7 M: Q( d- _! v! o# z* R6 e
1 t6 s6 b9 E L( d% c3 u& Z- function create(ctx, state, entity) {" t' b9 J' ]& X0 x; S! A
- let info = {
, l. s8 K( z) v, s6 b/ H7 E5 S7 V - ctx: ctx,
$ ^0 P- u/ Q8 M y: e! Q - isTrain: false," f* y, B B0 U3 {
- matrices: [mat],
7 F/ _" q7 f0 R/ J5 U+ R - texture: [400, 400],* S% t5 e6 c: `1 ]) D) p! S6 O
- model: {
& e3 P& [3 n' V- u6 u* S$ ?: U - renderType: "light",0 Y+ @" X/ Z* m
- size: [1, 1],
' g8 c0 c, j" [! I - uvSize: [1, 1]
$ V& i7 i2 [( o3 j# @* ^0 g - }
0 f4 X" T2 h& u5 m0 s/ \4 B - }: N2 _) h- ^7 _! y! X
- let f = new Face(info);0 @ i! X, l' e+ l1 E
- state.f = f;. [+ R) w" s3 g- A
- 6 P- C+ k8 v8 b. @
- let t = f.texture;3 h* e% a q8 e
- let g = t.graphics;9 ~+ D$ a t: v( x4 ^' L" J" \# Z7 N
- state.running = true;. V& B$ l1 l$ s W' u
- let fps = 24;3 M( ?) `9 f$ [- P9 z( j# f+ y
- da(g);//绘制底图
( E/ K% ]3 E( R8 R2 H8 g - t.upload();) Q3 b. T" `5 l. B9 H
- let k = 0;
& F. t2 V8 B( B4 C- l _" u - let ti = Date.now();4 ]& I1 h# j* g
- let rt = 0;
! |1 p. H, F9 x/ U; r8 | - smooth = (k, v) => {// 平滑变化
7 Z% d; l9 H- l& L7 A* W3 L0 X - if (v > k) return k;
: s4 T) X6 @" M! d& m- p* t. ^ - if (k < 0) return 0;
5 O: K: w0 t4 ^$ b - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;7 n$ J, N: ^% `- e
- }0 t. _8 c, P( @% n' Q
- run = () => {// 新线程+ I$ t* }3 h! `
- let id = Thread.currentThread().getId();3 y8 Z9 h6 X' G" `( V& s
- print("Thread start:" + id);7 e8 i. {6 y2 @9 c3 I
- while (state.running) {* o3 T- C7 a( Q' r: }; s" z4 B6 }
- try {
/ T# L- ~. \ }( [2 i+ v - k += (Date.now() - ti) / 1000 * 0.2;& D, c& B# }. v$ p
- ti = Date.now();0 t/ I, ^0 a3 _' @' [& c
- if (k > 1.5) {
- |/ X, t* F0 I. v" ?3 b - k = 0;
# I; ?; i, u* u' k" \4 U$ z - }
0 N4 V6 }! N" x. x# t% s - setComp(g, 1);
" J# L! J8 Y6 x2 j! _4 u3 j! O% M - da(g);
$ l% l/ B1 y) k: l# E' n - let kk = smooth(1, k);//平滑切换透明度
4 ~4 ~/ v w6 @; M9 c - setComp(g, kk);. f5 O/ y, P) Y& U/ p0 d
- db(g);
2 R) J& @, Z9 e/ J - t.upload();
* e/ | t5 J* K3 Z6 c, z - ctx.setDebugInfo("rt" ,Date.now() - ti);
6 }, n5 f, A* V% e" @: w$ O - ctx.setDebugInfo("k", k);. C' C$ L7 h$ T( }+ j, Z& G
- ctx.setDebugInfo("sm", kk);% L2 y ~5 `1 c( t5 v3 o. E7 O
- rt = Date.now() - ti;
7 z) t2 t4 S q, D: T4 l - Thread.sleep(ck(rt - 1000 / fps));
! R) U# Y/ p5 n: y! }, l- Q( U* E - ctx.setDebugInfo("error", 0)+ M' c: V1 k7 ^. j; p
- } catch (e) {( d& j5 S& O! X/ L
- ctx.setDebugInfo("error", e);
% B3 j! `0 e6 ^1 F - }
9 e9 s+ e$ r" j" j+ u! K - }% X5 G* r* a9 v
- print("Thread end:" + id);
! \" G0 N% F" b - }
3 ]5 h& A9 ?$ Z. z6 a2 H - let th = new Thread(run, "qiehuan");1 X; r5 t6 i2 }) l4 u! x+ i
- th.start();& u' O* [/ }/ q& ^
- }; A% Y& b! n( m' e* `# F$ A6 W8 m
- 3 P- f6 c+ i0 e! |2 h( V, Z$ Y: T
- function render(ctx, state, entity) {& o6 K! I7 Q, j p$ M+ ]" _6 \
- state.f.tick();
$ Z+ f% a: K. V: h( R# [ - }
* C' s( L# f& z! Z - & Q- R1 J+ \% g# G) b( t
- function dispose(ctx, state, entity) {
+ |+ h! [' b$ Q3 F1 L7 p - print("Dispose");0 K. V j7 ]. N8 B, K: B: h/ a/ @
- state.running = false;
3 j8 X0 _. L$ X, T j3 |, T - state.f.close();/ ], f$ \0 V2 x, |! Y/ W
- }; `- {1 ]7 \0 z/ c2 h/ f; \
- ) w7 C- j2 a& A, t) y: W* G) O$ h! _/ i
- function setComp(g, value) {) ^3 g c( J( c6 L
- g.setComposite(AlphaComposite.SrcOver.derive(value));
2 S* T# u( P+ A4 H - }
复制代码
) _' J3 Y# I2 [8 S( M7 [$ L7 z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。; c/ ~* A4 b" @5 s3 t& r9 b
. [ f' F9 `3 j3 J" l* G
: l! f$ f* p: t9 M3 A" U顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
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