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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。# g6 M3 e, ?; ^4 i* u! S
- importPackage (java.lang);
( I8 _! Q4 v; i+ ?( \/ z - importPackage (java.awt);# h2 Y t- O* i- }. H+ @! u
7 L1 |/ [0 n& Y$ q4 @- include(Resources.id("mtrsteamloco:library/code/face.js"));
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- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);, m4 F; o3 m4 i0 w6 M; }3 h' q
- }( r6 E- w7 _. E
- function getW(str, font) {
3 g! F, s& }' ] - let frc = Resources.getFontRenderContext();
4 r, o! O* @3 ~ - bounds = font.getStringBounds(str, frc);
) e2 Y$ `+ w0 @' g8 h - return Math.ceil(bounds.getWidth());" ]& S6 }! e: c6 I
- }# v6 N/ F" j: T; l( M% r2 A
- 7 m6 h9 ^4 U" l- g" g
- da = (g) => {//底图绘制
9 S$ |" U# j9 `% d) V, |+ j: I - g.setColor(Color.BLACK);+ M/ \7 Q: ^4 }. h n- V
- g.fillRect(0, 0, 400, 400);) B. r& _( J4 S$ g8 T
- }
5 @' j5 }& p( Y" G - ' B& z* J. }- k+ L
- db = (g) => {//上层绘制
6 Z. C# k% W L4 |! U2 _7 ?* P0 g - g.setColor(Color.WHITE);
/ J: s5 g x7 m- R9 p, h - g.fillRect(0, 0, 400, 400); l, X$ Z9 ]6 e1 w
- g.setColor(Color.RED);
/ O' q3 X! H2 H" U# Q8 G& G - g.setFont(font0);! c9 F! r3 \6 ~) @& u
- let str = "晴纱是男娘";( I6 I8 A: n8 N% h: _; y: v
- let ww = 400;
+ m( b h( Y1 Y - let w = getW(str, font0);' z) D2 Y& i, Z1 e9 ]
- g.drawString(str, ww / 2 - w / 2, 200);% o& Z) G% {+ z, Q+ o3 c+ o( S
- }2 D' C' L; D3 H
- 6 z$ k2 z3 f. e" P. Y! L: P
- const mat = new Matrices();* |8 ^. i0 D* q. }* H" h# A3 ~4 C0 r
- mat.translate(0, 0.5, 0);1 s+ S; J1 C6 |4 S, x
# g9 O3 d6 X. q% }7 @- function create(ctx, state, entity) {
% P; e; u2 U- C/ N, m/ ?$ e) W - let info = {
8 e5 a1 C- u: R6 m6 u0 y- z - ctx: ctx,, p: K, K( z" P& v! I# g+ |7 S
- isTrain: false,
3 ~( r* U0 m. \4 g+ K: V - matrices: [mat],. T8 R$ @4 G% z0 Z' V
- texture: [400, 400],
* ?; t N# r3 X }( b( V2 m - model: {- {8 F! G. b& a% d$ U! U
- renderType: "light"," S# N4 E. N% o' U/ b! o
- size: [1, 1],4 n; x. z+ ^. e& Q% i
- uvSize: [1, 1]
: F( ~1 H4 ]7 C `3 o- c1 ` - }
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+ t) Y7 |2 I8 B: d - let f = new Face(info);
8 V0 a) Y. b" V/ t/ z - state.f = f;$ P# b' i9 } ^- u) B
& e' \; `9 x1 {2 x/ Y7 T! ]8 r2 H- let t = f.texture;' {0 l3 v& t2 [' P) c
- let g = t.graphics;& {0 a) N. k9 B S- a: z9 V
- state.running = true;
6 n$ Z; M" A$ N/ p8 C; K - let fps = 24;& w# v' k+ w/ r! _' A
- da(g);//绘制底图1 |) t4 Q7 A( v
- t.upload();9 w+ y2 g0 O5 q/ e l7 v8 U
- let k = 0;" z% G2 J; I5 m" W" W; s
- let ti = Date.now();
6 X9 @- c5 w, E7 M - let rt = 0;$ H: ]* `7 `3 m' c% R1 [
- smooth = (k, v) => {// 平滑变化
W2 G( g) b( L. ^) Q" n* t3 t - if (v > k) return k;& n$ D* L n" l Q( }7 {' n5 d: K
- if (k < 0) return 0;& g/ @0 D+ y+ D
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;' B9 ~3 D3 Y0 S) C: f5 D
- }
8 u$ a+ z( ]2 m1 V2 K5 ] - run = () => {// 新线程
) E/ O. e- o1 n: S; m: D7 x - let id = Thread.currentThread().getId();2 e0 X" b) _' s5 g
- print("Thread start:" + id);
: @. Y; k, G" s/ }5 g - while (state.running) {( \! m5 ~) n8 Z$ k8 e e
- try {
- s+ F% Z* m8 E( C5 ? - k += (Date.now() - ti) / 1000 * 0.2;
$ R2 K! i9 _$ R2 y9 ^ - ti = Date.now();
, q8 H; C {0 U, [ j( v - if (k > 1.5) {1 }- [- y1 c4 U2 E k, a3 q3 V5 u1 f
- k = 0;* L6 L6 f- m# D$ j' u4 N0 V
- }- Y. F% ~3 }! P) s* T
- setComp(g, 1);; v( Z. W. Z- [
- da(g);+ b3 b2 e& p) t/ @. Y6 v
- let kk = smooth(1, k);//平滑切换透明度
' U# y+ a! O7 ]1 \: O! B - setComp(g, kk);9 L; A/ q/ h' t7 v7 N
- db(g);
. a. E# \0 m0 P: P4 x; E/ I - t.upload();' M2 [$ H3 ]. g4 g
- ctx.setDebugInfo("rt" ,Date.now() - ti);4 W: d J( E+ |
- ctx.setDebugInfo("k", k);
" H0 r* ]8 y! c& b& j - ctx.setDebugInfo("sm", kk);
" u N; \4 U9 P }/ E& G - rt = Date.now() - ti;2 P ?7 Y n" g& T4 C5 D
- Thread.sleep(ck(rt - 1000 / fps));
9 e$ U" G$ a& ?% e; ? - ctx.setDebugInfo("error", 0)
( |. F* f5 H; E0 V1 x - } catch (e) {! U( E, m$ A4 F& t; r
- ctx.setDebugInfo("error", e);4 |: d! J |9 A8 v/ N/ X) j' ^. s) m- H
- }
3 w8 y) \9 f) L C. C! }$ O - }
0 {2 c, p( N# I/ T- F4 c - print("Thread end:" + id);
# L* ]! u" s# ]; S - }
- ~+ {6 i6 k2 V: ~' q+ f - let th = new Thread(run, "qiehuan");
, z1 R2 y# K( m* j% E% V7 f - th.start();( y' P; o9 x0 R$ x' R; u6 K+ ?
- }$ n1 F; `3 L( ~" U3 T
! m% ]) H, ~6 [5 S' O* Y. @- function render(ctx, state, entity) {) g, B; m1 z' j/ [- p7 Z
- state.f.tick();& N) o: _. d: `4 S% N2 d$ D. F
- }; U0 |# s+ i& _/ ^& J
- ! z) L. Y- S7 h; T% z" `; d+ K0 L; B
- function dispose(ctx, state, entity) {1 m! R# g- _; R, T, X
- print("Dispose");- z6 v/ {; W& f( }6 A+ c& z: d
- state.running = false;
! O) _. Q2 G! w& T |/ l5 ~ - state.f.close();
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- ( Z- }# [ X5 m/ R
- function setComp(g, value) {7 d# U$ [2 G: T" ]' }3 ` o/ t
- g.setComposite(AlphaComposite.SrcOver.derive(value));
: i; B, b' ~8 y0 @1 o$ Y: c - }
复制代码
; }8 Y' ]* l. j8 b' 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。" t! V. [5 r% L9 s2 q
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1 Y/ D( {1 V6 { x+ b, O9 F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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