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; e5 I! P6 [& G0 E! Y' E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。
& K u- P0 Z9 I5 r" q7 I- importPackage (java.lang); u/ n" c n+ ~/ J
- importPackage (java.awt);
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- include(Resources.id("mtrsteamloco:library/code/face.js"));& t8 h6 E- r! f6 L' D) R& T1 B
7 V9 u- v9 ^ D- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);, n# G" J. E5 U
4 Z( i2 \- l2 z1 g! M; L4 ~: J1 }- function getW(str, font) {( |) p4 @+ B! y4 H/ D+ S
- let frc = Resources.getFontRenderContext();+ M8 u$ ]! l! y9 H
- bounds = font.getStringBounds(str, frc);# Y- d; Z0 K H. n+ X# F: W
- return Math.ceil(bounds.getWidth());
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. M; Q8 P- Y$ }/ r5 u2 }- U8 w I/ h- da = (g) => {//底图绘制
X6 `. e4 ]) W9 Y1 B( Y - g.setColor(Color.BLACK);
# c) l8 \+ s1 T. \' ^ - g.fillRect(0, 0, 400, 400);2 B, v8 o" H3 }! z9 Y
- }
2 G, I6 r6 |+ W! q* e& i$ N
4 N7 k+ d5 {/ j- db = (g) => {//上层绘制
; ~4 m9 |4 Y0 R. B4 n - g.setColor(Color.WHITE);
4 Z+ J4 N$ ?1 U: o, @# u3 P) G - g.fillRect(0, 0, 400, 400);) n- j C" M, _8 w/ q
- g.setColor(Color.RED); o9 o2 j2 t+ a9 S3 K" v: v! o, ?
- g.setFont(font0);8 W+ ?* s/ {. D& g
- let str = "晴纱是男娘";% I! ], N2 A9 x+ w+ m
- let ww = 400;
; t0 d/ [- O7 N) S - let w = getW(str, font0);/ F! L* s$ g/ E5 T* z3 L9 i: W1 ?( O
- g.drawString(str, ww / 2 - w / 2, 200);3 \. _% \' z; G
- }+ ~' Q( Q3 D% F! U" R
- |" E- I. g5 F2 n G7 i" J- const mat = new Matrices();
1 I; ~" E# H; d1 `, Y - mat.translate(0, 0.5, 0);
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- function create(ctx, state, entity) {( n) u: c. p1 _- \2 b! B$ n0 b( |7 |
- let info = {, b4 r! C- V B/ i c9 r
- ctx: ctx,! A* n0 v6 c/ b8 z7 u
- isTrain: false,* Q- D6 K" g& ~: [; Q3 T& k
- matrices: [mat],2 e) `0 j+ _9 B* G
- texture: [400, 400],1 a/ k/ t3 ]$ p& K5 z3 }/ f, G
- model: {1 Y( D( o" b9 _0 Q0 J
- renderType: "light", j. [: O/ A g; j) e7 c) t/ g
- size: [1, 1],/ z/ ]3 |3 t2 D. h3 n
- uvSize: [1, 1]6 Z. v* w6 j1 B1 {: i" \( [
- }6 k: m1 y& X- [) d9 l+ K
- }* E7 t2 @( {: f, F4 O1 S3 w4 |
- let f = new Face(info);
% O7 Y7 Z& Z5 A4 ?' v2 M) X - state.f = f;
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- let t = f.texture;
" n; O" q/ x9 h: D - let g = t.graphics;+ D5 P% ]! I! O9 d
- state.running = true;" ^! R4 P$ i" e; k
- let fps = 24;% U. E) R1 j2 M2 w
- da(g);//绘制底图
: @( @9 I9 b3 r n' J! C- x, w - t.upload();: `8 N- h# [( a
- let k = 0;5 G8 f7 u' {* E* v' V/ G
- let ti = Date.now();
3 } \" K1 F& B - let rt = 0;" J M: W7 l. z% K7 h$ t e# B
- smooth = (k, v) => {// 平滑变化! y/ @8 p! N* r2 S! a) S
- if (v > k) return k;; {9 ]" @5 U/ q5 @5 E) Q
- if (k < 0) return 0;$ }4 f8 \6 i' Q2 p9 u- v
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
3 P( c5 O1 }, X: m4 T - }
) J7 }4 Y) W2 F. k - run = () => {// 新线程
, X& Y6 g6 x/ y: m - let id = Thread.currentThread().getId();
$ l! S6 j$ O/ o2 J - print("Thread start:" + id);
* [/ a5 B# b, Y- G5 L. m* L/ M0 W - while (state.running) {
4 P6 f) F+ w6 _5 N6 c7 A - try {1 ~* |, q2 N5 `
- k += (Date.now() - ti) / 1000 * 0.2; q; L6 c1 P' { d
- ti = Date.now();
1 r8 J" Q0 p" {" X" A8 i S - if (k > 1.5) {
( X7 q& Y8 `' ~ - k = 0;
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- setComp(g, 1);8 Z$ Q3 L1 j, L3 A0 Z1 y( x
- da(g);
9 U' p% R4 ]& M5 ]+ r/ A - let kk = smooth(1, k);//平滑切换透明度
) `0 K! k% [+ Q# M V; G - setComp(g, kk);
! T: g9 s, |$ q, I( h+ p - db(g);$ t# U- t$ l/ e' K" h
- t.upload();! k. q% B& a3 o/ y) q
- ctx.setDebugInfo("rt" ,Date.now() - ti);
9 U& B$ i* d/ X$ _8 o: j2 o9 W+ h - ctx.setDebugInfo("k", k);, [; i+ p' g1 L- Y
- ctx.setDebugInfo("sm", kk);' W; I$ \* m3 b
- rt = Date.now() - ti;: O2 U% Y9 s8 g1 y
- Thread.sleep(ck(rt - 1000 / fps));$ g; v+ ~6 r8 W# |8 p7 n
- ctx.setDebugInfo("error", 0)
2 B% B) Z& ^! I( { - } catch (e) {
9 O% U0 S1 N G) H9 l' s - ctx.setDebugInfo("error", e);
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- }# t- \" T" D& f5 Y
- print("Thread end:" + id);
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- let th = new Thread(run, "qiehuan");
) r8 Q' `. l% n1 p - th.start();
7 c; Y" X5 K6 p8 q* t8 l- i: M X - }
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! S. B$ Z7 y: g D2 q0 w. B- ]- function render(ctx, state, entity) {
, V5 X8 T% K( q) T$ j - state.f.tick();
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2 _0 o, m- D1 a- function dispose(ctx, state, entity) {
4 l T' U! Z, A$ g8 \* W( s5 K - print("Dispose");, y* F0 |/ U, D2 a0 C+ B
- state.running = false;6 Z& {- `3 c% P B" H- o
- state.f.close();
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/ M# h- U1 |, a. S- function setComp(g, value) {
' l& ^6 {7 H, e' O+ O+ v - g.setComposite(AlphaComposite.SrcOver.derive(value));
* a+ |0 Z1 q# W2 z. Z2 m+ i5 D& F - }
复制代码
3 X ^- O$ W9 R9 M% [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。1 c2 z0 t) a9 I O& o+ F- j
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+ J2 T0 c) k# k+ 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)
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