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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。, w# T0 M' u J% `
- importPackage (java.lang);
# K6 G8 }: \# }8 ?" e1 R8 i1 I - importPackage (java.awt);
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- include(Resources.id("mtrsteamloco:library/code/face.js"));
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: L) b4 |% s j/ F9 I, m1 T- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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0 e4 ?( X0 z: D# @- function getW(str, font) {
3 ^) L( q: {3 M - let frc = Resources.getFontRenderContext();
8 q# S0 H6 n4 u - bounds = font.getStringBounds(str, frc);& Q+ e0 L' k1 z) a
- return Math.ceil(bounds.getWidth());7 _( i& y0 \' g/ h
- }
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8 f# f3 }2 S* P5 `- da = (g) => {//底图绘制# B, s, Q; X! K$ U
- g.setColor(Color.BLACK);+ l6 n) I3 g9 ^9 y) |' u' Q
- g.fillRect(0, 0, 400, 400);
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- ( t B& U) O% @7 ]+ ^: T0 ?8 f1 I
- db = (g) => {//上层绘制
' W+ b# E8 b* ^# r" n - g.setColor(Color.WHITE);
2 r9 a/ b* I& |, \ - g.fillRect(0, 0, 400, 400); b: [" H. v5 G9 S7 J
- g.setColor(Color.RED);& \$ A3 A0 |7 a3 G" x5 {$ h: q* _7 y
- g.setFont(font0);
7 C0 u& c, Y# x/ A7 s - let str = "晴纱是男娘";
4 Q/ Z; `1 Y" @; h# Q - let ww = 400;
8 }: B% C% Z+ E3 y, a - let w = getW(str, font0);
. n; _' U; V e+ g. N - g.drawString(str, ww / 2 - w / 2, 200);* F, i0 g! a& q$ R5 L' H8 a
- }
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- const mat = new Matrices();
4 D' f- }1 w7 ~; Q& k+ d' ]% w - mat.translate(0, 0.5, 0);
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- function create(ctx, state, entity) {
. `& _9 y5 c% x$ J* l+ g9 J) @ - let info = {1 e$ ?* D3 [" @- X, W+ j
- ctx: ctx,/ a: H4 c( u- _0 C- O3 w+ g
- isTrain: false,- O1 T/ a* b" a8 R$ j- ^7 J( m
- matrices: [mat],
$ ]6 l3 H/ I' S' W! ` - texture: [400, 400],
6 z7 ^" R6 B' V8 r1 }. l - model: { X! d V0 [9 _2 y" \' _8 v4 B; @
- renderType: "light",. ~, `. K. B2 Q( k v& e- w8 a9 L
- size: [1, 1],
3 p7 {* z5 d4 {* Q( N R7 \ - uvSize: [1, 1]
2 G* ]* d7 A" @& y# P; v6 C - }
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- let f = new Face(info);! z: a9 a% ?; S/ T* v, C
- state.f = f;
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- let t = f.texture;
, q3 o2 h& U- F: g9 ]- a - let g = t.graphics;
- y9 I: b( [* @0 c1 f - state.running = true;0 }6 y* a, l: m
- let fps = 24;, r7 U' f) K8 Q0 M' |( {: j
- da(g);//绘制底图
' {% ~- Y& L$ | - t.upload();
8 B7 z$ m6 Q! r* X3 e - let k = 0;
0 a6 z. d9 t# S1 S+ Q) h - let ti = Date.now();9 ?; S: @1 ^+ q3 J% ~* G6 @
- let rt = 0;# z! u; O4 q E6 _
- smooth = (k, v) => {// 平滑变化
, Z- M. @ n8 w) S - if (v > k) return k;
8 J6 R5 i' O" r: f% R6 S; k - if (k < 0) return 0;' G3 N9 Q' y/ |
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;' s3 l5 B! \" a+ G4 u
- }
! e" g- H% g# L+ y6 | - run = () => {// 新线程7 V5 X$ g! p; M5 _1 d) A1 C) w
- let id = Thread.currentThread().getId();
5 I/ y4 f/ T L0 H5 ]6 K: _ - print("Thread start:" + id);
- Y6 s: L3 p3 q8 q - while (state.running) {4 M+ p6 x' a+ |# X& f9 U6 |
- try {* y, z% j/ |7 U! h
- k += (Date.now() - ti) / 1000 * 0.2;7 O Z# c/ g1 H; n7 u6 l' {
- ti = Date.now();
+ g4 x( n6 T$ z; H: e& Y$ i) ] ~ - if (k > 1.5) {* W+ \5 X3 X) v, F# G
- k = 0;
5 X7 q. f* _2 X/ e1 B5 b7 t4 U - }
3 B. }, u. l! F) c. m; n. f - setComp(g, 1);" ^+ G; @! Y) ]9 a/ T" W7 R, S
- da(g);
- q. x0 F; q; n8 z - let kk = smooth(1, k);//平滑切换透明度5 Z5 m1 { r3 s" T. H9 ?5 D
- setComp(g, kk);) e- ~8 {' y8 p) d
- db(g);
/ ]: Y) b/ k2 h( {7 k+ p3 }3 U - t.upload();3 ~4 j! F( ?/ d; l: n0 R4 ]
- ctx.setDebugInfo("rt" ,Date.now() - ti);2 \: Y! l0 x8 C# f( X6 b3 `+ b
- ctx.setDebugInfo("k", k);
S/ K% O) t' [7 f! e+ r2 R - ctx.setDebugInfo("sm", kk);5 e9 U& m3 M/ k2 A3 V( q. y
- rt = Date.now() - ti;
5 p3 |% O) p+ ?1 }' B - Thread.sleep(ck(rt - 1000 / fps));$ W# ~# b* M) x T
- ctx.setDebugInfo("error", 0)
# G) B) U v P- w - } catch (e) {
9 B# f* a) \, [* c - ctx.setDebugInfo("error", e);. E( T; D' a) i f) `
- }. N4 D6 ?# L) F/ ?
- }
6 i0 O. D) M' A' K0 v0 J - print("Thread end:" + id);
0 c* {! \+ e" c' O- B2 | - }
% @- W4 f% O0 h4 u$ C - let th = new Thread(run, "qiehuan");
& b' \7 [5 p1 E - th.start(); w+ c- q; ~" x
- }' ]& X) R9 y9 Y7 H! m
' R7 z! Q4 z8 @6 B5 a! t- function render(ctx, state, entity) {
" D' ^# u8 d' S, m8 A! h( W) L) A$ [+ X - state.f.tick();8 T- k5 d6 R3 _$ R
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8 d. x" S3 _4 F. l3 E7 s5 A' y- function dispose(ctx, state, entity) {- S& t, ^2 F, |% {
- print("Dispose");
" W9 s0 I4 A" K3 b4 c' O0 s - state.running = false;
4 L8 d2 Y u! b; x3 P( u: F - state.f.close();
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- function setComp(g, value) {; q6 E- N) i% P, p: j+ j
- g.setComposite(AlphaComposite.SrcOver.derive(value));' Q$ Y5 B$ j: F0 |" e, t( f- l5 s
- }
复制代码 & B" N' t6 h' j! `( n& N
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。2 l( s% |! B6 n1 r7 J; o
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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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