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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。
9 M, }# f5 E! X- _- c; V- importPackage (java.lang);
' i& |! U1 H; ^8 g" L" k - importPackage (java.awt);$ w9 S0 O, {7 T) P$ l5 X2 n% e
- 5 C3 K+ c- y* m8 b) @' C
- include(Resources.id("mtrsteamloco:library/code/face.js"));1 ~: T9 U* ^; R7 z! m" H% @
6 C/ a9 X( ]# ~! u5 B- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
8 K! \; r$ ` b! g v U - 9 c7 q5 b" E) F. h0 U' r' w" r. E
- function getW(str, font) {: z- i/ a# V4 Y" ~, G. y5 t* {
- let frc = Resources.getFontRenderContext();
: c# I/ V! B' m% { - bounds = font.getStringBounds(str, frc);/ f9 t% A z. W
- return Math.ceil(bounds.getWidth());! I# N. m. r5 T X9 }
- } T& M+ j& p6 I" J" x9 B
0 a: q% c3 \0 f. s* N+ D" ?- da = (g) => {//底图绘制; A+ `6 k+ o/ Z' b
- g.setColor(Color.BLACK);
4 P' k' l, O% v - g.fillRect(0, 0, 400, 400);
; j X% ?6 ^, `2 | - }
# e; c! p* U) f y$ h
1 i4 }7 _2 W' `- db = (g) => {//上层绘制8 g+ o( y2 h( S( G6 R8 W- o' P
- g.setColor(Color.WHITE);2 i! M& E8 w4 n! @- u5 c+ [
- g.fillRect(0, 0, 400, 400);* _" O& U, k, ]3 E0 D1 G9 t
- g.setColor(Color.RED);; M" i( ^$ I( p2 ]6 o& j# o
- g.setFont(font0);
7 M3 U( }( f7 z: j8 e - let str = "晴纱是男娘";
9 C0 m7 K' E) U# ~/ b( ] - let ww = 400;
+ W4 ~/ M0 D b+ ^1 L - let w = getW(str, font0);
# Q( {) W7 z2 k+ p. V: ]) V - g.drawString(str, ww / 2 - w / 2, 200);# q( [0 A" Y2 ]. f
- }9 Z! e/ l1 p& V8 r9 I- s* B
- 8 a+ f' @9 d/ H P# L% b3 x
- const mat = new Matrices();) j1 |% g6 \# [: t4 E- p
- mat.translate(0, 0.5, 0);
: {/ G) o C2 ]2 h! o% I- P" { - n- n( F) d8 B5 ?9 J
- function create(ctx, state, entity) {
@6 t6 E) X, X3 ~. T$ ^* M - let info = {
8 M/ H' W/ f! ^: |( } - ctx: ctx,2 N- M4 o h5 i: s" X
- isTrain: false,
- S+ F) f% x( E+ ?) ?; N, [" L - matrices: [mat],
& L2 J4 e7 K; v2 K0 j9 J - texture: [400, 400],) p; O: p. y! a" H2 I* Y" O
- model: {; R7 C2 V1 r* }1 t( x- y& Y7 r/ U
- renderType: "light",8 j/ I* s& J9 U- L; y W4 E
- size: [1, 1],3 r1 L* o" M/ I* k; _/ o" I
- uvSize: [1, 1]8 v" D5 u+ R, A( w9 @' L
- } Z+ A" O# P, q1 a3 P& x
- }
8 F. H! U, I0 D0 F9 } - let f = new Face(info);2 \% Q( g3 e( w- D* ?4 G; E
- state.f = f;
5 i* N5 X5 K$ B% u/ y% J" E1 l8 } - 6 D1 L) W. m- Y2 ?# [
- let t = f.texture;# q/ X- b3 Q7 s1 h
- let g = t.graphics;+ [! y/ o. \+ L( t
- state.running = true;4 K1 T- U7 L, O% C
- let fps = 24;" N; N, a/ f* c+ S
- da(g);//绘制底图
- O" }! V c- v - t.upload();
6 j( L* c q4 \2 s - let k = 0;
' x3 S% F5 w- N* `" ^! @# r - let ti = Date.now();
/ `" r Z; N% u - let rt = 0;
7 r0 ^, L% R$ n$ N - smooth = (k, v) => {// 平滑变化
0 @9 x" d0 T; H' d5 Z - if (v > k) return k;
_+ g$ \6 A+ S4 A! W - if (k < 0) return 0;
9 y" d( E4 j/ P# |# U5 x - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;) s" s, b0 L% ^1 I9 C! f
- }% Y; x5 O- m" }4 \/ Q0 ?6 t
- run = () => {// 新线程
6 o. X L9 x% B$ d: a2 r& P - let id = Thread.currentThread().getId();
, M! [% w; ]7 F; V+ C4 Y - print("Thread start:" + id);$ j. P) y, p; U& q
- while (state.running) {' V9 r. g3 z2 B0 l6 U9 |4 ?1 Y
- try {
' P: M# h+ s1 @+ ?6 Q3 ` - k += (Date.now() - ti) / 1000 * 0.2;, F* U$ }5 n6 n. e L
- ti = Date.now();
2 u! N4 X0 P3 `+ {: d- } - if (k > 1.5) {
$ O' t+ E* {; o& p* E" T6 t - k = 0;
+ h6 [9 V8 `: u! @: o7 V' f - }
* G0 C! q+ ]7 D2 |' s) s/ u) f) C: f - setComp(g, 1);0 a2 d5 p) @" D! c) T% ]; k p4 E
- da(g);) T8 Q+ u. r( @" c; ^$ e% q
- let kk = smooth(1, k);//平滑切换透明度
% ]- r4 a% ]& p& m4 n9 T" o) K - setComp(g, kk);
' y1 C* Y9 Q9 U( e9 H' U8 v4 P& V - db(g);
# Z- y o, q' f2 D/ o3 l - t.upload();( c( `) J4 p6 n; I* E% L
- ctx.setDebugInfo("rt" ,Date.now() - ti);" B# ?0 C7 }7 F0 y% X" B' l# s
- ctx.setDebugInfo("k", k);
+ _# b# X4 }2 o0 ]' Y, Q' A - ctx.setDebugInfo("sm", kk);% V$ A; a( C- A2 m0 h5 K `" x
- rt = Date.now() - ti;, p; Y }4 i3 `; f" s# R
- Thread.sleep(ck(rt - 1000 / fps));
1 C6 o. T$ V3 v7 {! d- P - ctx.setDebugInfo("error", 0)
* K: X! g! z; @! W% x& y* Y2 d1 ^ - } catch (e) {( C) G: `& A6 B
- ctx.setDebugInfo("error", e);
* E- \0 R1 G" l0 u Q0 ~2 d - }9 w6 I8 J! J9 K. V' y) Y
- }) K3 Y" S8 Y; j% X: `# S
- print("Thread end:" + id);8 t& _6 u/ g7 P! M$ \: T
- }! I0 U, T, U: t( k
- let th = new Thread(run, "qiehuan");, }" s; d7 L+ l+ e6 S1 k. W
- th.start();
8 n5 P& Q/ y% q1 @8 S$ P - }
& s4 Z0 y. c, L7 p0 Z; G) ? - 5 B! U5 s( z2 D
- function render(ctx, state, entity) {
p) ?, x: i: _+ u6 d - state.f.tick();- z$ m2 c/ I. J. Y" C
- }$ n' {! ^) l; q" W& J. {( r
- 4 `) Y% x( e# S0 j: N' b& Q
- function dispose(ctx, state, entity) {4 L2 n; y. r# R- Y1 h1 a' c8 }
- print("Dispose");
( q/ e a! I9 f p4 o* J! M - state.running = false;
% c6 `3 h4 f1 L; m - state.f.close();6 R+ d. ~2 B+ l1 f4 ]0 l. }
- }
. V8 a( o" ^4 V# v6 {
8 h C# d, b; H% M# u0 t- function setComp(g, value) {- [0 x% c( e n& B7 D$ B2 l5 S
- g.setComposite(AlphaComposite.SrcOver.derive(value));
; s3 i1 Y2 q8 m4 h' T% i* Z+ M& x" Q6 M - }
复制代码
8 ~* n: ` t8 _0 z/ V' 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。& J, k4 w( v9 i- X; b) k6 b$ @1 ^
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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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