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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$ N! H! g l6 }1 D) P
- importPackage (java.lang);
$ T5 i, N5 k5 |: J - importPackage (java.awt);6 F+ D7 P6 {5 Y9 r
" {* a) n/ R: M$ R( V* w- include(Resources.id("mtrsteamloco:library/code/face.js"));
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4 U7 h( r! `: e/ _$ M- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);1 z3 s5 I- N; _, d3 s& r
- / O2 I# `& @% Z& L/ S
- function getW(str, font) {2 j, G9 x( N8 f" |; D
- let frc = Resources.getFontRenderContext();: ~: I( ?: n: [0 I7 J' }
- bounds = font.getStringBounds(str, frc);/ `1 h0 S" R" V' e
- return Math.ceil(bounds.getWidth());
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7 Z/ Z; M4 v: o! n. W8 x1 C7 L- da = (g) => {//底图绘制! G0 t9 {5 B7 u
- g.setColor(Color.BLACK);% S0 t+ J' o. d" {' b- B
- g.fillRect(0, 0, 400, 400);
) Z) ~9 P7 r4 `7 T8 M - }
6 K8 d" Q; u4 W: o+ F( C
; G! a! E# u5 w t* o9 A- db = (g) => {//上层绘制
1 h& Z% k4 |' p5 i3 s% _1 ` - g.setColor(Color.WHITE);9 E6 n; c. s* F5 O0 ~' Q+ r/ F1 ?
- g.fillRect(0, 0, 400, 400);
- K6 e$ I+ U) r - g.setColor(Color.RED);3 Z; n) _/ q2 E0 ~
- g.setFont(font0);
3 Q; `, ~$ y) e3 X/ e - let str = "晴纱是男娘";& n" \/ y& O. J$ A. d( H
- let ww = 400;
" j5 ~7 D8 F2 N1 t5 q' J% ^ - let w = getW(str, font0);
) F& u" E( q- Q( v8 V - g.drawString(str, ww / 2 - w / 2, 200);
* y- s- ~! Q$ y0 q/ R: e: X0 h0 G6 ~ - }
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& Y7 t3 n, Y( W/ S/ s- const mat = new Matrices();
2 |( ?0 \1 D4 @: y' x. n - mat.translate(0, 0.5, 0);' ~5 Q9 y8 f* a- V X( M
- ! e9 g6 c& x+ z$ V9 y6 L, a
- function create(ctx, state, entity) {, y2 R* j+ Q0 d- |9 x) t
- let info = {7 z% ?; [$ n# X2 ^9 v
- ctx: ctx,
3 k$ U' a+ l$ w. h5 J) ^) H" d - isTrain: false,
3 \1 D2 _; o, o) d4 s - matrices: [mat],
) f4 d$ g, U" z) l( g6 \ - texture: [400, 400],8 ]( Y7 B5 R9 P! z$ u/ k6 r
- model: {
9 |+ J% t% f4 {* J4 n0 A, @. ~ - renderType: "light",
% s. D4 m; k7 N - size: [1, 1],( k4 t- ^ [: s' x7 U& t" L
- uvSize: [1, 1]
. V! n# m1 I8 h/ {+ H6 M - }( h3 w% C% J0 B( \
- }" [ W: Q: q, _ Q0 x9 J' e% R4 H1 O
- let f = new Face(info);
: m" i! E% A. k9 y! Z9 z- O$ V - state.f = f;" l) e: d* x8 B& Y+ ~2 C' D) ?
. \3 U0 s2 g2 {8 ~$ [! n- let t = f.texture;. C( c. f' D" \* ?
- let g = t.graphics;- j1 E" c1 X& u& L% H
- state.running = true;6 W! Z2 _% z. y/ w5 K8 Y, u4 l8 A1 i
- let fps = 24;1 v4 s$ W8 a# W. x% y- F& u
- da(g);//绘制底图
; N8 p7 V# g+ U- n - t.upload();1 w7 Q3 c9 j# y7 s4 J# O
- let k = 0;
& X2 C: K% B) L( i; N$ |7 K6 ~ - let ti = Date.now();8 A% C" H1 H/ m
- let rt = 0;+ l' m J2 W4 Y5 _; m& V1 K; J
- smooth = (k, v) => {// 平滑变化( f& q! z |+ i5 X: ]$ E4 h
- if (v > k) return k;, n5 E- H; {7 j
- if (k < 0) return 0;
! g2 c4 z+ K3 P7 X+ A. k. ^ - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
& m6 G: q8 i( M4 {4 d& `3 @* ~% z - }
. G% R: A7 Z3 Z+ |" U6 H2 y - run = () => {// 新线程
8 v1 x1 e5 T5 ?( T - let id = Thread.currentThread().getId();
& D) B9 o6 j/ \ - print("Thread start:" + id);. b7 Q1 p/ w: W0 X. x2 k" t
- while (state.running) {
6 S. O/ N" T/ v9 W1 V7 Z: s; L! x - try {- x1 ^' T# {3 J2 x0 k: i+ C) c
- k += (Date.now() - ti) / 1000 * 0.2;
& y( C E& y$ `) R! V- k( ?9 V3 T - ti = Date.now();
! S- R8 T. E& M0 q6 N" R) g# S - if (k > 1.5) { L2 L" m- [8 U1 M. d+ |
- k = 0;0 Q* g6 j& M, @& J) h
- }0 _# f3 w. C3 G* L$ }
- setComp(g, 1);
* R: U9 b1 `, B1 v# O- F, w - da(g);4 M2 G( p3 r4 h5 e. M% ^
- let kk = smooth(1, k);//平滑切换透明度8 [# d, M7 q) p7 i, H" Q" a
- setComp(g, kk);
4 Y/ x- D% D2 F' F; @ - db(g);% e% ?: `7 w0 a: h3 @, d* z. e: z
- t.upload();
" O3 i) ^$ d6 Z" g - ctx.setDebugInfo("rt" ,Date.now() - ti);
! z* ^5 L& B1 ?3 `. W - ctx.setDebugInfo("k", k);1 F- t1 J( A4 y* O4 t
- ctx.setDebugInfo("sm", kk);
% r# p% x% T6 T5 c1 s) x) S - rt = Date.now() - ti;
, y" w9 y7 V6 S) m7 u - Thread.sleep(ck(rt - 1000 / fps));0 a& _) w6 W/ P( e8 l2 A3 k
- ctx.setDebugInfo("error", 0)
+ ]+ {9 K1 p: D/ e" F/ K* s - } catch (e) {# N( b, B: [( Z' p/ @3 _2 |
- ctx.setDebugInfo("error", e);1 l3 ~1 R* l5 k, p3 f$ _" G
- }
8 H( Z% J6 P, j8 \' o - }) u8 Q( Q/ \, {# j- I
- print("Thread end:" + id);
2 o( S# W& v. d - }
6 Q( Z+ Q% D. ~% [* N - let th = new Thread(run, "qiehuan");; ^9 S0 x; O& q. g* D n
- th.start();
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+ g9 G3 Z" i( C! |% d- function render(ctx, state, entity) {
3 ]1 c. G* ?/ `" W/ ]/ S' R - state.f.tick();
- [8 V0 {8 q0 R/ I' \4 D6 ` - }3 h; e# [/ z* z. M6 J+ e% g
2 i1 p* m7 i Q$ b, t- function dispose(ctx, state, entity) {
5 Z& p( Y. ~' J4 R# X - print("Dispose");
+ T. n" s1 o9 f% u6 Y6 \4 z - state.running = false;, G: J) ~6 k2 j* C
- state.f.close();
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1 q0 M/ O1 D2 Y5 ~0 j6 L& |" T- function setComp(g, value) {2 I1 R3 V$ D1 | ]/ g
- g.setComposite(AlphaComposite.SrcOver.derive(value));6 L# Y u B8 j, j0 N4 N; w
- }
复制代码 8 M e2 f, x; Q8 O
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。( {; f, ?/ J( {9 g$ O5 V1 K
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& l9 Y) Z, b9 f& X2 I: a顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)# a# A9 a) w( Q5 v Q p5 U$ d
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