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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。: C# B% N8 A% Y5 t: Z
- importPackage (java.lang);3 [3 ^3 S6 T" Z# J
- importPackage (java.awt);
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. g0 u% [ [0 u/ p2 i( t- include(Resources.id("mtrsteamloco:library/code/face.js"));* _: i4 Z( V) f/ ~/ f
9 J. @0 B8 ?% q& b* F- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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1 C/ Q% U% v: I: Y9 o- function getW(str, font) {# \$ k. C, y* `6 T! ?# A
- let frc = Resources.getFontRenderContext();
' X) N9 d1 d h9 k, E5 x: `% T% T - bounds = font.getStringBounds(str, frc);
; T8 P( ~# K3 i0 I+ A6 ?1 P; T% J- R# ] - return Math.ceil(bounds.getWidth());9 s' c! I* `2 H4 t
- }
' ^3 T. S" M5 ?# C- {9 h - ( J! F9 r7 d! Q6 V; z- G `# }6 c" n
- da = (g) => {//底图绘制
o& R: Q6 b* R- Z7 R4 C6 |% T; \ - g.setColor(Color.BLACK);
6 ?! h. Y# F d - g.fillRect(0, 0, 400, 400);
U9 y/ r, n3 j3 e - }/ E) Y7 @( z/ x
& f8 X# @! d9 G' S- db = (g) => {//上层绘制
' a9 [4 H+ C1 |1 ] - g.setColor(Color.WHITE);
* f/ G, P" p, E# p# `5 c1 N8 y - g.fillRect(0, 0, 400, 400);
9 X6 C. F6 S5 L0 Q* O3 J6 S6 ] - g.setColor(Color.RED);
! d- E' R0 W9 Z/ F - g.setFont(font0);
) j( }8 S+ q8 G0 L& }' W - let str = "晴纱是男娘";
; {% N: }6 \& w( @ - let ww = 400;& p" b0 D0 U5 x4 ~8 f3 I" e
- let w = getW(str, font0);
# Z, }+ o2 o+ }/ E G9 ^0 p0 I# w% k: L - g.drawString(str, ww / 2 - w / 2, 200);" ?' L6 F7 U8 J& ^
- }
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- const mat = new Matrices();
1 b! {# T2 g# f% K* y. V - mat.translate(0, 0.5, 0);# }5 y1 g+ X% v; S4 |
0 n8 }7 B+ l0 T6 T( ~- function create(ctx, state, entity) {. G0 v8 w( ~' v1 j- k3 B
- let info = {
5 N' U( w, d, D7 P, Z - ctx: ctx,
$ ]) C& t* a) X; M - isTrain: false,2 s6 e9 Y1 ~( L. B; c8 ^# E
- matrices: [mat],/ F( m z& A! G
- texture: [400, 400],
3 X3 z( i+ V8 l - model: {
X5 O. w& _0 J' f$ G) m& p - renderType: "light",( w7 {1 o4 B$ K& t2 ]2 H* `, r6 t6 P
- size: [1, 1],6 q: h+ p, i( v5 v; f- s7 k! M
- uvSize: [1, 1]# ]- _) V1 C' b# n( [
- }" K% f$ Z* a) m
- }! Z2 J* p% ~+ h7 C
- let f = new Face(info);
4 c. G& F( u+ S. B) W - state.f = f;
1 n: b' W. T* I% I- B5 |+ f
+ W' W0 c0 f: ~5 C9 B# m- let t = f.texture;5 n8 {1 j+ J* ^2 H P1 a
- let g = t.graphics;3 O7 k2 i G) K! `* W! p
- state.running = true; \- Q! m, V) w6 [! k R
- let fps = 24;
5 J+ R9 n( P! E& s9 e8 q! S - da(g);//绘制底图
7 Q7 o( b) q6 ^9 a# D1 ]& L/ S - t.upload();# f) Q) E4 q0 d8 y% J1 l
- let k = 0;0 M" A, O; D3 ^2 x: U l
- let ti = Date.now();: c# ^) b; K/ k
- let rt = 0;
' i( `, J: d' _$ E* Y7 X* r3 Q/ N+ G - smooth = (k, v) => {// 平滑变化
9 ?% ~, ~2 [1 D; W - if (v > k) return k;
) a2 a+ D" g8 S' k2 f - if (k < 0) return 0;* A' [5 r R" \& w) A! Q+ ?
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;( t3 @* m5 g3 _$ S; B" L
- }
* Y. m, W% N" M q - run = () => {// 新线程
% d% W! w% L! k/ x* F, F( x, y& T - let id = Thread.currentThread().getId();
8 q% n* o+ T; V. C; ? v& q - print("Thread start:" + id);+ @3 A- c. I4 g6 _" R
- while (state.running) {$ J" o7 A# p# o8 l
- try {
* ]% Q4 S, `5 e& A( V2 q9 l2 U - k += (Date.now() - ti) / 1000 * 0.2;& g3 U' O$ _" J0 Z5 u, G
- ti = Date.now();, i4 _- H+ P# y/ z2 B# M
- if (k > 1.5) {/ d6 L# n0 F" C# A# L$ K- V
- k = 0;
4 J/ i$ B; w& S2 w7 c) T - }
2 Q7 Z- M* p v" m9 i+ |) M% u - setComp(g, 1);* o8 O1 B2 r0 D' {0 `
- da(g);
0 t, h: f7 T7 H- G' i: Y* z - let kk = smooth(1, k);//平滑切换透明度7 B; Z3 k3 d% J+ S/ F# N2 k) ^, S
- setComp(g, kk);, Z% E2 e, b e& j) Q
- db(g);5 N& x& o% s. X
- t.upload();
4 L! C) v) e& n% A - ctx.setDebugInfo("rt" ,Date.now() - ti);8 j, o8 y( b& F3 d4 }- ?
- ctx.setDebugInfo("k", k);
0 h( z# _, T: f: r - ctx.setDebugInfo("sm", kk);
" h# ]& T1 r& Q. a; E - rt = Date.now() - ti;/ O" H2 f% I- m
- Thread.sleep(ck(rt - 1000 / fps));
5 q% x3 Z+ i. A3 O" i, b, `3 U( ^* h - ctx.setDebugInfo("error", 0)
% f {- ^9 k: p9 ^" b, q - } catch (e) {' s3 t" `7 j! B8 e3 Y! L6 \8 `
- ctx.setDebugInfo("error", e);0 F$ C1 r1 n* v/ T! C3 D* A% \4 U
- }% D H7 N! I* ^! l' c7 a0 E
- }
; q# f% d2 W: @% i; j; L# r# ^$ l - print("Thread end:" + id);
; H g1 f5 }* [) } - }
$ s" w6 v! j1 G3 I - let th = new Thread(run, "qiehuan");
3 h% J4 n' ~' j9 t& G+ J" \/ [! ? - th.start();
; }1 j5 p7 U/ Y7 P" P+ o& F+ D' u5 H - }4 W6 E7 M/ I9 ?
- : _+ U$ D; e: s% X( C
- function render(ctx, state, entity) {' P0 |& a( H3 y" K; V3 T
- state.f.tick();1 M9 U/ Y( j5 K5 ?4 I2 s( Q* \
- }
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2 x7 o% f# W( n! e- c/ H7 X- v- function dispose(ctx, state, entity) {
9 u; t. Z* M8 ?6 y D! q - print("Dispose");
5 @) y% D' i# ]5 \7 s6 m - state.running = false;
# T. G: b7 ]& u! D - state.f.close();) u. D& \8 ~# @8 L8 _6 o% M
- }4 v" y; z* e; l3 |
- ! M D: H0 F& n) P- u+ L
- function setComp(g, value) {7 d4 }( W& I, Z
- g.setComposite(AlphaComposite.SrcOver.derive(value));- ?' x s5 p: r8 V& C% R
- }
复制代码 # J: d, }9 L* \
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。0 {0 J! D' c8 v9 F
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2 V9 ^ l# b0 n0 G( }顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)6 ?8 N8 V8 V+ Z7 A% O6 j: C- l
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