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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。0 ^ b, m7 ^( ?7 ~+ i1 R
- importPackage (java.lang);
, Y( {! k8 N" v, N9 h - importPackage (java.awt);
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- include(Resources.id("mtrsteamloco:library/code/face.js"));. X; i. U- Q: |* \* H3 L) a
0 L( K8 ~ y' X3 j) ^5 f7 Q u* f- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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" j- q) t V* h0 I8 G4 c% `- function getW(str, font) {
K8 |3 ? e* {. ?" M, t: B - let frc = Resources.getFontRenderContext();1 A K( ]8 m! }" Q
- bounds = font.getStringBounds(str, frc);6 F! w0 u$ Z' d) C& r! Z
- return Math.ceil(bounds.getWidth());
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- 0 V1 w) Y& G; u9 O1 V/ D* o
- da = (g) => {//底图绘制2 g7 d% d! _ Q3 g& i
- g.setColor(Color.BLACK);/ a( v' n% m1 I. \* L
- g.fillRect(0, 0, 400, 400);
8 `/ B0 [4 }5 q* U' a; ` - }
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- db = (g) => {//上层绘制. q/ s/ k; L. T3 l
- g.setColor(Color.WHITE);
l+ r: m% d, W$ _9 t# t& s; m* R - g.fillRect(0, 0, 400, 400);, f' ?, x5 @, u( E! c# f
- g.setColor(Color.RED);2 _( z$ M: Y$ y6 ]5 n7 ?
- g.setFont(font0);
2 J/ w( _! ?! w - let str = "晴纱是男娘";
6 z2 S- l) l7 b3 j" d' k. d - let ww = 400;
- b( A/ S1 S$ a4 W5 |/ _$ ?4 p - let w = getW(str, font0);
2 C% V" U! U' ?3 H1 n9 [ - g.drawString(str, ww / 2 - w / 2, 200);
: G4 L* ]; L& \/ \8 X/ N$ _ - }
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- const mat = new Matrices();" ?. z, q2 L; G! [9 o
- mat.translate(0, 0.5, 0);: j& y v$ {' B* ?
+ ^! Y& Z7 [% Z$ J- function create(ctx, state, entity) {* o9 g3 v, F9 k
- let info = {4 ?) C% s: w* q, B
- ctx: ctx,
0 t: c `0 D- F3 t - isTrain: false,
& n8 ?' Z7 Y2 T& z - matrices: [mat],
# K# z9 G" m1 K9 f - texture: [400, 400],
3 Y# W1 `# X" |; R' ]3 r - model: {
; B7 G6 w, {. p7 Q9 d2 x - renderType: "light",
?' V6 l% o4 Y/ E - size: [1, 1],( D @" H2 L% y* X) Y$ o
- uvSize: [1, 1]$ S8 h. a$ P" U( `. k+ b* ~
- }
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- let f = new Face(info);8 p7 P0 l! r, `& F7 A
- state.f = f;
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& o- q5 ?# b" L5 r- let t = f.texture;
$ w6 G3 J# j+ l; L7 Z, S* C/ `9 w- U - let g = t.graphics;
1 ^0 u0 T; o" l% E# m - state.running = true;
7 E) s% J4 `" `( B* G# ^) U9 F - let fps = 24;
, P3 Q5 O$ M l: K | - da(g);//绘制底图
' V+ |6 h' |$ B# k; m5 Y% x - t.upload();
8 P3 ?: ?, y+ X" W5 s# x4 J( E - let k = 0;1 a+ ?% e" J+ F$ U+ ~" P* \- P3 }4 n O( x. Z
- let ti = Date.now();5 g- [3 j5 D1 A
- let rt = 0;
( L4 _' P$ E$ w) J7 Y" P" ^0 M - smooth = (k, v) => {// 平滑变化
7 p4 o& _0 O+ R; V4 r - if (v > k) return k;
# T2 c ~, |, a - if (k < 0) return 0;: R# J8 ^* w9 n. C' I
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;. V' q% O4 f6 c0 N1 M
- }6 d2 U" [ c2 T: _
- run = () => {// 新线程8 G+ i5 N/ m7 n4 N# h
- let id = Thread.currentThread().getId();( }$ m4 F1 }0 D+ D4 [" x# v' w8 ~
- print("Thread start:" + id);5 i4 }" \# i# I- Q2 R* ]+ H+ [; a
- while (state.running) {/ J3 t7 J: { b# |
- try {) P: B7 [& A. A) q: w2 U
- k += (Date.now() - ti) / 1000 * 0.2;
$ @* ~/ P9 w$ X! Q) r# ^; i - ti = Date.now();: ^6 e( k3 {. N9 ~
- if (k > 1.5) {5 F/ E b5 m+ q
- k = 0;0 I. G, s. P: m% |
- }
* Y: E! ?. q R2 e* i9 w6 q - setComp(g, 1);/ F4 V% x9 O) R0 J- r
- da(g);, x+ v( [+ C2 I5 J8 e; o3 f
- let kk = smooth(1, k);//平滑切换透明度" H3 ]5 G P' g
- setComp(g, kk);0 g. k, A# o. f6 X( H! J0 f# I
- db(g);
% L; a9 T H" K- K1 b( @ - t.upload();) a3 J, Y, ]: k" l7 n/ H w
- ctx.setDebugInfo("rt" ,Date.now() - ti);
6 d, z5 G3 M9 `3 J - ctx.setDebugInfo("k", k);) T9 ]/ t1 ?% s9 C
- ctx.setDebugInfo("sm", kk);
5 S+ Y! T8 Z0 O) g; ~# Q - rt = Date.now() - ti;
* Z; T8 g9 r5 G9 t' Y - Thread.sleep(ck(rt - 1000 / fps));& f1 W9 W% Z5 ^% Y/ T9 ]
- ctx.setDebugInfo("error", 0)
- G4 D/ X* t0 x, }6 \) u/ Y3 X - } catch (e) {
2 N. S: _/ |4 |4 p7 D - ctx.setDebugInfo("error", e);
+ O) m9 l5 D0 [1 y$ b4 ] - }
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- print("Thread end:" + id);
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- let th = new Thread(run, "qiehuan");$ ?7 I4 W; | X/ n
- th.start();) D- `/ j9 x9 M, S2 `; x% g
- }
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- function render(ctx, state, entity) {
" C4 F" S* H9 [7 b& p, P - state.f.tick();
# Z# L9 }4 H1 q: c/ d( [8 T - }
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- function dispose(ctx, state, entity) {0 w' c' I; }: U7 @: [4 j/ L
- print("Dispose");, A' f' ~; I( p6 M; _3 J; O
- state.running = false;1 H8 E! M" ]; N. t$ e& W* e! e# W" q
- state.f.close();
~$ ?, k: f" Y! F% D1 G - }
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- function setComp(g, value) {% V6 O1 Z, |+ g; ?1 u( A
- g.setComposite(AlphaComposite.SrcOver.derive(value));5 p2 S4 `+ h U! B; {# z* |
- }
复制代码
2 d' |; d( P6 c$ @( N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。
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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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