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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。) l }* Z. u& o) d
- importPackage (java.lang);' M# ?. q- w8 I$ D
- importPackage (java.awt);" |8 ~$ O, F+ t- ~& H* p% x
8 z5 _) B9 v; ^) k- include(Resources.id("mtrsteamloco:library/code/face.js"));
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' ^1 [ e \8 k% c- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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- function getW(str, font) {
# F- ~1 K- Q/ g' c$ W - let frc = Resources.getFontRenderContext();! Z& V: ?) V' b! Z! _" w, u5 Y
- bounds = font.getStringBounds(str, frc);6 b3 y6 V: c5 y& I! z
- return Math.ceil(bounds.getWidth());
" i3 v# [% K& E+ r5 C( f, c - }
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$ N. [; U' F7 s* p- u- da = (g) => {//底图绘制
$ `6 J- P X4 `; e5 V+ A - g.setColor(Color.BLACK);
# W- v6 x; X6 b8 c$ E - g.fillRect(0, 0, 400, 400);3 b4 g5 ^6 t- }" J9 f: \9 `
- }
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- O& U/ v; J$ R+ |8 j. c- ?) A- db = (g) => {//上层绘制
7 I1 R1 d% e, z* ] - g.setColor(Color.WHITE);
6 q* l9 [! M, y1 e/ {* x" `- Q - g.fillRect(0, 0, 400, 400);
" ]) Y0 C! q I3 @1 n1 p4 a$ o7 o - g.setColor(Color.RED);, ]- }8 b, o R& T
- g.setFont(font0);$ c( ~! |) F- q1 i
- let str = "晴纱是男娘";: i, \" B, i/ o E$ X1 ?
- let ww = 400;
) I% n( J$ P( a& e - let w = getW(str, font0);3 O4 S4 M2 F) I2 y$ I! @# Q! t) }
- g.drawString(str, ww / 2 - w / 2, 200);! l( @% n+ f J }
- }
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- const mat = new Matrices(); _9 F2 ]( g4 h: E
- mat.translate(0, 0.5, 0);# r. l. d" j2 m- K' V* F b
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- function create(ctx, state, entity) {( T8 c- o, T: \$ ~
- let info = {' ~" X& O7 y# Y4 K1 a! i
- ctx: ctx,0 i1 ^6 O- Z& ?1 j! }3 R
- isTrain: false,
2 L# k6 \$ a l3 ~: u& ^, z' R% ` - matrices: [mat],# ^/ y7 p( [0 N4 g8 f
- texture: [400, 400],( a: g+ U( u5 c9 [+ d
- model: {7 Y. I; Q: U; @
- renderType: "light",' I8 ^3 m G& C
- size: [1, 1],
# z" i' I8 g: l6 f/ W - uvSize: [1, 1]
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5 y% M/ O' V# ?$ y$ _# {) K+ | b - let f = new Face(info);0 t+ T. n: i# z( C" T5 c
- state.f = f;0 t# o8 I3 a8 G* i$ `+ w E
- 8 t! M' W4 q/ h* ^7 T( F+ d! Z1 r
- let t = f.texture;
t8 i# W, t4 L! F - let g = t.graphics;8 c2 Q( h2 m& L+ m2 k
- state.running = true;. f! ?$ r6 q- U& E# M! a
- let fps = 24;
/ I v+ Z9 F0 E; Z. o - da(g);//绘制底图
9 X, e3 {: e: u" G& x* A - t.upload();& t& a9 z$ j1 H& ~, T8 u- f
- let k = 0;
) G; ^6 g0 W; E7 l1 m3 F. l - let ti = Date.now();
( R% Y( {( Q5 M. p2 | - let rt = 0;& J9 C% }+ t1 A+ n m, Z
- smooth = (k, v) => {// 平滑变化
/ A( R, d8 x& u4 m - if (v > k) return k;
8 l1 g, A5 A) m9 s$ K - if (k < 0) return 0;/ v0 k0 ?, g a, _& ?
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;$ r- A4 d; d0 j8 f- K1 r6 q! R8 y3 z
- }7 n! \. x' }. H2 U. f) x& B
- run = () => {// 新线程' P. N! b* A4 y1 T V- u
- let id = Thread.currentThread().getId();
6 n7 x' g; h6 s( v V t% a - print("Thread start:" + id);
$ f' ] Q) N% Q* Z: c. {8 m - while (state.running) {
- L1 S3 x3 V2 H+ H, T8 H - try {4 G' [/ B$ k! P/ h( _3 F4 E6 P7 V
- k += (Date.now() - ti) / 1000 * 0.2;
2 A' ?2 H$ R7 t k/ a, z - ti = Date.now();( f3 H, s I4 K9 o( B7 {9 @# [
- if (k > 1.5) {& @! n+ K3 h4 X g
- k = 0;7 X, p* w8 _7 H Y
- }+ t, v( T- I" p" w" Z: ^8 D
- setComp(g, 1);0 e% G& Y" j. ?6 n2 p- `
- da(g);9 X& X* L, h1 N9 ~0 |3 c
- let kk = smooth(1, k);//平滑切换透明度
8 x) f8 r) t, y6 Y C6 D; H - setComp(g, kk);. o$ w0 j2 n3 P G( F
- db(g);
- F+ Z3 u/ Z% \7 ?6 b9 C - t.upload();
! T8 Y p+ }- k - ctx.setDebugInfo("rt" ,Date.now() - ti);
: y: k0 l: X. }: f m' c0 M - ctx.setDebugInfo("k", k);
8 w; d8 \; \+ C% F7 T( R - ctx.setDebugInfo("sm", kk);
- p3 V& L1 p2 e9 L8 b - rt = Date.now() - ti;
+ W" }- c; l) z" l% O - Thread.sleep(ck(rt - 1000 / fps));
5 K4 ]* }$ j% r( V! o - ctx.setDebugInfo("error", 0)
5 W( M2 ~1 y0 Q1 t. S - } catch (e) {* n4 o# g7 d; E$ O
- ctx.setDebugInfo("error", e);, {/ U2 g5 C- C6 _7 w, T
- }
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- print("Thread end:" + id);' B/ l) @, r8 r, h- y+ S \
- }' [; h* p+ `2 x1 P6 x
- let th = new Thread(run, "qiehuan");
3 S7 `! A$ b% i1 i4 Q% R$ O, r# ]9 g - th.start();
1 X/ u' p$ g: @8 P% e. m8 M& q - }
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- function render(ctx, state, entity) {
" G3 S. Y3 |. U: e+ F3 ^+ T1 _ - state.f.tick();
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- . j8 ]) v+ |6 r+ U
- function dispose(ctx, state, entity) {! S) V- z, K$ D) g
- print("Dispose");$ J7 Y2 N( d: n( d h. y
- state.running = false;) h! L) @7 O! I% `( @$ E" P8 K
- state.f.close();3 n R5 ]: j5 u; ^1 t5 s% K
- }
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- function setComp(g, value) {
4 Q- n8 u; P9 @: w - g.setComposite(AlphaComposite.SrcOver.derive(value));% w# K* J7 u' r+ ^
- }
复制代码
4 _: k' S7 u' P. _/ \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。
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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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