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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 q8 R y0 b' t3 I1 v9 u( j
- importPackage (java.lang);( g- |* N8 e& `6 }! s. m0 _* n
- importPackage (java.awt);
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! T' ^9 i" A, c, W- include(Resources.id("mtrsteamloco:library/code/face.js"));
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- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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8 _5 x$ ]7 ]( q4 ^, \1 h- function getW(str, font) {
6 v* w, V6 S$ U0 Z: Q; ^9 |: c) m - let frc = Resources.getFontRenderContext();$ U9 `5 f% c/ ]% z5 _0 j/ @1 i
- bounds = font.getStringBounds(str, frc);4 p6 p& w9 ^0 v5 g1 w' _4 M9 ~. i. \. v
- return Math.ceil(bounds.getWidth());
/ k% t3 _5 I m - }
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* J! a& D! o+ U$ E S' x1 ?- da = (g) => {//底图绘制
! l( O0 [" o; i$ J - g.setColor(Color.BLACK);. r( S6 w. B7 f
- g.fillRect(0, 0, 400, 400);
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: L5 Y O$ {: N$ _- db = (g) => {//上层绘制0 `/ v; W! k0 Y& r0 {/ x
- g.setColor(Color.WHITE);% S: D8 b/ l8 O- z! d* N2 h. C
- g.fillRect(0, 0, 400, 400);
/ R( f; ]0 @3 p! @ - g.setColor(Color.RED);
3 d( Q+ [- x7 E4 U5 V' [/ [ - g.setFont(font0);4 m5 U0 ^- j7 c& B L. c/ s
- let str = "晴纱是男娘";! J( K5 s. J+ B- H
- let ww = 400;# v" j4 H2 H% b- Q4 y/ u: f( h6 F v
- let w = getW(str, font0);2 ]2 @4 R' p' B2 [1 ?7 Y' @
- g.drawString(str, ww / 2 - w / 2, 200);" y# \: b) h2 o, \* O. U- ]
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- 5 a: ~. Z$ I& X8 T
- const mat = new Matrices();& K! R4 c" G, s8 I; ]) ^7 r
- mat.translate(0, 0.5, 0);
2 P, E7 h; G" V# s- N; E7 o z# {
+ l8 {+ N- m; t: m+ _3 M- function create(ctx, state, entity) {4 f, O" p, a4 S, x; J
- let info = {' s* U u6 m8 a
- ctx: ctx,
5 K& q2 x9 v8 v - isTrain: false,! z& Y( ~ ]/ F2 i- n
- matrices: [mat],( ?( U" ` D2 f, J
- texture: [400, 400],* i2 i, l O X0 }: J/ |. x
- model: {6 l' S; D* ~; r) j1 V( _9 q3 N. P' P
- renderType: "light",! Y5 i6 m2 s6 N* x. s( |5 K
- size: [1, 1],: M$ Z0 E2 P5 V
- uvSize: [1, 1]
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- }
# z- |' O2 L; g" u1 z# T - let f = new Face(info);
, d! A8 q7 _- _: ?( {* V0 x - state.f = f;
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' J3 T1 \5 P4 b- let t = f.texture;
" e5 w! G6 D/ k/ [$ _( K - let g = t.graphics;
& w" `6 B6 R/ J$ u; H* H6 w8 k3 [ - state.running = true;
& o2 m* ]" P+ w" V - let fps = 24;
% u4 s+ _% s! d- U - da(g);//绘制底图$ m2 X. T; x. S9 ~
- t.upload();
9 G0 \( F- \' N - let k = 0;+ V4 S R3 O% W% Q/ f9 ?. C
- let ti = Date.now();* Y4 n5 p- }+ h
- let rt = 0;- t$ `9 b8 w9 O+ L/ \: W
- smooth = (k, v) => {// 平滑变化
" F& j/ k7 y; q9 _; ? - if (v > k) return k;, N# j9 J; \2 B9 V! g
- if (k < 0) return 0;5 H) d- T% V/ ` T2 j! M
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
6 {" u3 {& l; p ^- |7 `$ c - }
) v) t7 ]* @8 f& p1 u; c, B2 k - run = () => {// 新线程
1 m9 g$ X) {0 Z+ C5 a" Z - let id = Thread.currentThread().getId();3 e, F0 B: I0 E9 F$ a. z
- print("Thread start:" + id);" U! i/ B% }% H0 P7 [/ a
- while (state.running) {- O. f& s6 F7 T9 X" ?6 T
- try {7 D& |4 m1 C1 ~" ^' `1 A+ v- O1 g
- k += (Date.now() - ti) / 1000 * 0.2;& R8 B! P' d( u
- ti = Date.now();) j+ Z' ]# L( f2 I
- if (k > 1.5) {& ?) e6 B2 K: m4 a) \7 u( l* ^& R
- k = 0;
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- setComp(g, 1);+ a( Q6 V% R8 D1 i7 x& q
- da(g);
* m, g& B* F' u/ _ - let kk = smooth(1, k);//平滑切换透明度
0 y& ^4 V' q- d% \2 Z - setComp(g, kk);2 A6 v, ^; o) T* `5 s5 b) J+ {7 l
- db(g);
/ {- G* k$ b }% J* _& H: r& G# p - t.upload();
9 F7 ~3 a# `" y y. Z; X/ I/ \ - ctx.setDebugInfo("rt" ,Date.now() - ti);
* r+ g7 A0 Y1 z% ?& R - ctx.setDebugInfo("k", k);- p" Y) ?) B! b0 I
- ctx.setDebugInfo("sm", kk);9 a) y9 r( L7 |! U. p1 q6 S
- rt = Date.now() - ti;! @6 v+ C% J5 V
- Thread.sleep(ck(rt - 1000 / fps));
% s+ ]. a7 A' y; G% ^! Z% k* E - ctx.setDebugInfo("error", 0)) J y3 N7 o J. \* I2 m
- } catch (e) {
/ _ ]. s6 @& Y& ` - ctx.setDebugInfo("error", e);8 ?* K% \! c S6 @& P$ ~
- }
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- print("Thread end:" + id);
, F* g3 ~: r/ n" |2 ~! l+ G5 C - }
8 V0 e9 M( a, M9 x+ G7 j/ m7 j - let th = new Thread(run, "qiehuan");4 \6 g& b' n' N+ R% \& ~5 p
- th.start();5 B- P% j9 [- V' c8 p! o+ e$ m" C6 X
- }' C2 `; g1 n. i/ }
& k0 w' k4 o+ y& b+ q& B& `$ r- function render(ctx, state, entity) {$ g+ |! f2 q5 n# `6 k% {
- state.f.tick();
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- * L+ k, O: u/ s1 q6 E, T1 O# _& R
- function dispose(ctx, state, entity) {
+ P/ A& Y3 V5 i9 v, q - print("Dispose");
% _) w( S- i1 ~5 b, @ - state.running = false;2 u5 c; K+ s: g, o
- state.f.close();+ W. E3 Q4 ~6 K8 P
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. ^* `8 d* k9 n1 p! F6 J- function setComp(g, value) {! P$ }% L# K+ N v* n9 e/ Q- }
- g.setComposite(AlphaComposite.SrcOver.derive(value));7 e5 T. o/ {. j
- }
复制代码
3 L: [* Q- @ R) a8 |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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; c$ |- p% s4 r9 p- R; z1 ?/ G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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