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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。# B* j9 r; J6 q" a' c T
- importPackage (java.lang);
8 a& X' C% J) w4 P, S - importPackage (java.awt);) ?, Q& b" y/ S: K( A3 V) D7 ]
# g0 \- {4 G5 u- K' }# L- l- include(Resources.id("mtrsteamloco:library/code/face.js"));
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; T: A7 P& ]+ N- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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1 i# H& Z( O- D' @. [- function getW(str, font) {
! H! U6 _- M/ s |# G - let frc = Resources.getFontRenderContext();0 ]. @/ E8 j) N6 l, \" R( q
- bounds = font.getStringBounds(str, frc);# E: |" v1 V: A4 b: W
- return Math.ceil(bounds.getWidth());4 A$ ? _) l. X0 n+ C" ?+ p9 [
- }* }, m4 K7 o3 c0 U3 {; |9 K
. V( [* F$ I: f- da = (g) => {//底图绘制/ N, t0 W+ j5 H9 a ]
- g.setColor(Color.BLACK);
1 q* [9 } p. L) w2 c6 C - g.fillRect(0, 0, 400, 400);! C$ Y: D, \- G1 Y) e6 P4 d
- }
5 @+ o$ V# [1 P7 Q6 E - & b1 {8 h B2 M6 I( y0 w- C& }
- db = (g) => {//上层绘制
7 C$ a* N8 D" W; n - g.setColor(Color.WHITE);
/ n$ k9 b& @& S3 A9 D* y - g.fillRect(0, 0, 400, 400);
, |' |0 ^2 _8 T/ v" n5 K4 [! D - g.setColor(Color.RED);
' `1 C$ B$ a! N3 \. Y! s Z/ k: s - g.setFont(font0);7 w. u" k0 i4 d6 { G
- let str = "晴纱是男娘";
2 K* ~; b' m$ h* R - let ww = 400;& w$ o2 E7 n2 L m2 C
- let w = getW(str, font0);; c: l# ]- |8 A. i
- g.drawString(str, ww / 2 - w / 2, 200);8 [9 l- u5 E, `4 J; I$ n; [
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- 7 v6 A# q9 v# y; G& ]7 l( s W
- const mat = new Matrices();: B2 A# n3 b4 b: R/ M
- mat.translate(0, 0.5, 0);
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- function create(ctx, state, entity) {/ b- D5 K2 r; s2 P. p
- let info = {' A3 n# L( T, ?4 M% q$ C" X
- ctx: ctx,
$ }' e. u. [( J) W7 s( p0 ]1 ] - isTrain: false,
% Q; X5 M7 J! E9 ~( R. z - matrices: [mat],, O& N. S# I- h
- texture: [400, 400],
: R+ V% R, ?9 ~2 b - model: {
8 [& s9 M% P6 Z$ H" J4 i) I - renderType: "light",
1 C1 D% z9 V% @0 |. \" M - size: [1, 1]," e2 G. g' E {7 Y
- uvSize: [1, 1]5 v* o3 a, o: `9 Q3 f: J
- }5 ~' S, D9 @" g) z9 r
- }- N& ?: O4 A" _; F
- let f = new Face(info);
0 ^, W+ C& Y R2 P - state.f = f;5 A. h+ {. m6 \9 y& A
- # ]- {" \* B7 B; P' j& a
- let t = f.texture;
+ Q/ E4 d/ ?) M8 e# x - let g = t.graphics;+ B! W/ `# S4 p' j5 p
- state.running = true;$ f" ?2 l8 B8 g
- let fps = 24;1 U& N$ o5 N2 ^. s v
- da(g);//绘制底图) S, M/ N* Z$ Z( D$ e5 b. _
- t.upload();: t9 } D/ D% \ t4 r% z
- let k = 0;+ F2 d3 M3 S# v. [% S
- let ti = Date.now();) t2 @3 F& Q7 M8 i& C1 g* M
- let rt = 0;
: v, V3 `! o/ v7 q - smooth = (k, v) => {// 平滑变化
+ r% Y0 |) M/ A( d - if (v > k) return k;
8 C2 m/ ?5 m4 S4 k4 g - if (k < 0) return 0;; N7 P! K7 n) T( E4 K8 T+ L
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
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- run = () => {// 新线程 b' i) R$ V% m. R
- let id = Thread.currentThread().getId();
9 _& N. K- j9 _. B& T8 p# ` c$ U - print("Thread start:" + id);
, e2 H6 S! ?& L4 O9 K" \3 j - while (state.running) {" b% s1 y3 [ C* x" D
- try {
6 ^9 g4 g6 H4 }4 a8 I$ f& l( F1 \ - k += (Date.now() - ti) / 1000 * 0.2;, p I/ r; [9 H+ n
- ti = Date.now();
$ F* Q+ ^! s/ {, B7 Q& g - if (k > 1.5) {
! C# d" g' G* \) Q, o - k = 0;
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- setComp(g, 1);
4 s) ?. L9 p; W - da(g);4 N4 ]" e5 [# l- m
- let kk = smooth(1, k);//平滑切换透明度
- l& x* m9 w* i& G4 u5 a: i w - setComp(g, kk);
& p$ d1 I6 E7 p) p1 C% h& d - db(g);
3 A7 y! ?; b- B- E7 j( z - t.upload();- n! S3 R# t( V% B
- ctx.setDebugInfo("rt" ,Date.now() - ti);
0 u% U i; o+ ~; X$ G - ctx.setDebugInfo("k", k);
9 u" i( L* o8 l: ^ - ctx.setDebugInfo("sm", kk);
}0 X# G$ o5 O/ U5 G U9 l6 L q - rt = Date.now() - ti;
/ J k8 b3 S. ^3 d l, H - Thread.sleep(ck(rt - 1000 / fps));7 M2 N2 f, u. w! b, B, ]+ D
- ctx.setDebugInfo("error", 0)
+ T, h3 [* A! N) {9 s! x - } catch (e) {- q$ h1 R2 v: k0 W8 D6 V [; P7 l
- ctx.setDebugInfo("error", e);
: k9 j; d8 @2 r+ h - }
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- print("Thread end:" + id);8 w% y; ]. {: p
- }
" x1 t4 D. V2 i$ A% m - let th = new Thread(run, "qiehuan");
' x5 ], f7 j; I - th.start();
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- function render(ctx, state, entity) {7 @, N% M* l/ i! `: q
- state.f.tick();
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$ f; v7 L4 s7 W! C- function dispose(ctx, state, entity) {. `3 A# M7 B; M" f0 n. d) T9 k( i
- print("Dispose");* K" N8 w- S V6 l/ Y; X8 X
- state.running = false;6 R0 D& V& m0 e: j- O- q$ B
- state.f.close();
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- + O( B3 K A0 k& s( ?
- function setComp(g, value) {, Y7 T. A( D$ u7 k, [ S4 E9 L
- g.setComposite(AlphaComposite.SrcOver.derive(value));
' Q8 c- [9 f/ J - }
复制代码 ) N, R* |& U( U7 I. M1 X G
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。; h; u% [" p, B7 V: E
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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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