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* @; f& R- a. w" c: I- x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: [( }9 `9 E; z! l& a
- importPackage (java.lang);6 [( J' e$ w2 z; Z3 ?) `$ H
- importPackage (java.awt);
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, a9 l( e! \+ n4 j+ q- include(Resources.id("mtrsteamloco:library/code/face.js"));
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$ D9 p6 k; z' v" U3 l- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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/ \. I- P0 D% K0 u6 _ E2 J/ x: z/ N: X- function getW(str, font) {
5 R& I3 x! D, B - let frc = Resources.getFontRenderContext();/ z' q) t3 ?$ _% _
- bounds = font.getStringBounds(str, frc);
* A- l# f H7 y4 I$ X - return Math.ceil(bounds.getWidth());& k3 c/ w/ s0 o5 F: j
- }
" h1 W; z, ]6 L3 D1 G" c - 1 w8 @" m2 B0 `, e1 q
- da = (g) => {//底图绘制
. C0 Q4 b3 b Q# [3 ~7 M) m+ Z - g.setColor(Color.BLACK);
2 p% A- w) v( S - g.fillRect(0, 0, 400, 400);
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- db = (g) => {//上层绘制
. w) D! A4 _3 j - g.setColor(Color.WHITE);
1 P$ A, r G$ k - g.fillRect(0, 0, 400, 400);
+ e! D/ d% H1 _% W - g.setColor(Color.RED);
0 |$ Q; j l( q. v v1 _; H. e* H - g.setFont(font0); ]* ~6 z# n4 l3 d2 J7 U" E- `
- let str = "晴纱是男娘";& U7 g1 _' q3 |: P
- let ww = 400;
+ n X9 W6 A. R+ y7 X0 X - let w = getW(str, font0);( m1 {8 h U# ^6 P1 N5 c
- g.drawString(str, ww / 2 - w / 2, 200);
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- ! n( B. |# O- d
- const mat = new Matrices();
. j: E- H l# W& G7 n7 w - mat.translate(0, 0.5, 0);) g! u, c" i' R O# S5 V7 D
- ( I! R6 U! h8 Q' l+ o8 i( D" \7 |/ ~
- function create(ctx, state, entity) {# Y f8 ?$ Q! O% _1 h$ t" d, t
- let info = {2 a" z4 E7 I3 N5 T/ j
- ctx: ctx,
6 T% V& z5 U, [ }3 | - isTrain: false,
/ ^" L- p, |, ]- r0 [3 s - matrices: [mat],. L! s# n# \2 x$ k0 \; p
- texture: [400, 400],
" G9 k1 h3 V+ s7 K- v& D; b - model: {1 K- L! \$ B- q; O
- renderType: "light",
& Q2 H+ j |: B' T* H - size: [1, 1],0 [- I7 K" n) |- c) H
- uvSize: [1, 1]2 H" P* p* X2 N- B" C( b( L% I
- }
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- let f = new Face(info);
% c+ h1 g, ]3 b: p - state.f = f;+ e7 `; ?' q4 [: b4 S, K. ^' L: y
2 k0 ~/ E# ?# i1 x2 ?* a- let t = f.texture;+ v& }0 j# h4 B2 J+ O" R( N
- let g = t.graphics;
0 e! `3 m; u$ k7 u - state.running = true;
, m" O9 q- @; H# J- m* L/ P6 D2 c3 _ - let fps = 24;
* K% V6 c3 A0 A, F3 F W - da(g);//绘制底图
" u$ L( I5 e/ N - t.upload();
% Y5 c- k# ?8 U6 i/ G - let k = 0;
' ]- h: s2 A" C Y2 h - let ti = Date.now();4 g7 b5 ~0 |# h; i! r$ c
- let rt = 0;
$ g; t1 V9 [# G. `6 x - smooth = (k, v) => {// 平滑变化
$ a9 C" J$ Y3 h# b: } - if (v > k) return k;1 F4 s, d( x* @( k, b5 @
- if (k < 0) return 0;: @7 V, }) V3 ^1 r3 {: k
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
) J$ I9 r; j. a& p; b3 z9 M - }
, k, M2 T" C3 @& C0 H6 K - run = () => {// 新线程1 D( T+ r/ I) z0 r/ Z/ o
- let id = Thread.currentThread().getId();; X* R. \( B( Z$ m/ s" W$ d; ]
- print("Thread start:" + id);
: q- z5 X7 M. s- o _! i - while (state.running) {$ A3 _* [2 ] {- k5 n$ W, P
- try {
: q5 ?( T! I1 R - k += (Date.now() - ti) / 1000 * 0.2;
& B+ q2 j4 _$ ~* @ X4 b% U& { - ti = Date.now();+ [& z' e) E% ?6 f2 V
- if (k > 1.5) {# P2 R3 T2 c7 o. f T3 T* R( K
- k = 0;9 _' C; g6 K0 r+ o' I
- }, y$ H* N v5 u7 O& L3 c; N/ x- N" @4 B
- setComp(g, 1);- `# o% p9 ] J( q! H# n3 s) e: {
- da(g);& e9 M4 e6 S- N& l/ b
- let kk = smooth(1, k);//平滑切换透明度/ J3 f6 ~! P6 l( L e
- setComp(g, kk);
* K" C8 T- W& ]0 g - db(g);
) s! |' q6 [- p1 B( I. ~ - t.upload();
, E; t1 E/ ^0 Y0 k - ctx.setDebugInfo("rt" ,Date.now() - ti);/ t8 `' K. V2 Q) p
- ctx.setDebugInfo("k", k);
0 a1 s" [* \9 ~" {& q2 a6 @# b M - ctx.setDebugInfo("sm", kk);
4 s0 l+ n' O; e( N' s# R6 B0 t& n - rt = Date.now() - ti;: z! r) F% o# q( I3 l, c
- Thread.sleep(ck(rt - 1000 / fps));/ q7 |) C% m; V
- ctx.setDebugInfo("error", 0)
- W. a0 r$ D$ C8 W) {. [, u0 _ - } catch (e) {. K4 p1 G( k! y) M6 _- g) W( P$ V
- ctx.setDebugInfo("error", e);; s/ U. x: U8 b3 t n2 U
- }
$ S: a* l" |; K7 z. m - }* x) u, x7 d2 o2 f
- print("Thread end:" + id);% p. x- Y# @& g( _
- }3 h- {! [0 d6 ]6 }8 h
- let th = new Thread(run, "qiehuan");9 X' c/ e( B0 W0 l; Q2 f' R
- th.start();$ A/ U! x3 N- h6 `
- }) x; J# K6 X$ z$ u& s( L. [+ W
2 S2 _* M1 A" S" ]6 }" `- function render(ctx, state, entity) {$ S$ M3 M+ o' |% {
- state.f.tick();& d+ a# A1 y) A. w3 p
- }* s3 N1 z- U% F) b% h) R: j
7 j4 g1 m8 |) M( Y0 t3 d2 u- function dispose(ctx, state, entity) {
* g+ r1 K3 P1 E2 ]4 [7 c - print("Dispose");
% F' b# Z. C0 E' ]2 {# X: y2 h7 U - state.running = false;
! A# V" [( r: u# F- t8 D - state.f.close();
' f; e" u& S' f5 I - }
3 Z! D; s& R2 e! S2 x5 A/ e - / y$ [6 d& D. R9 f( F! o: L. [
- function setComp(g, value) {
# X$ Q3 n2 L8 S$ W* u) C4 } - g.setComposite(AlphaComposite.SrcOver.derive(value));
9 B. |: Z* y/ Z* p- u - }
复制代码
8 B7 V5 }5 s6 d# `! I% 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。/ |0 j3 m- Y1 @" `/ L4 ?7 x) Z
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1 l% [# m% |/ Q: K# b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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