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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。! `5 K! ~6 Y4 k' a0 y
- importPackage (java.lang);
& ^2 P7 g3 }( l - importPackage (java.awt);, ?) t3 k( w6 T* g/ R d
2 @5 y5 O( M5 z/ D6 |- z8 K- include(Resources.id("mtrsteamloco:library/code/face.js"));" I: t; b$ D( u' V
0 s) z" J7 X9 Y9 w( b- [/ k- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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- function getW(str, font) {
4 [& l8 \4 O U6 r" D0 ?3 @ - let frc = Resources.getFontRenderContext();! F9 z# n- {% k( Y6 Y/ L
- bounds = font.getStringBounds(str, frc);
/ e; o+ S$ |' N# B. @4 Y0 ~ - return Math.ceil(bounds.getWidth());3 F% p8 ~& _% w+ I4 b0 O; |, [( X
- }2 O. L) O3 T; n! Y, |; l
: j \ \, C6 m( o- da = (g) => {//底图绘制
5 @. V8 ?, ^! i, D' }" f - g.setColor(Color.BLACK);: p0 H3 b7 u+ t2 d0 b! Q! x
- g.fillRect(0, 0, 400, 400);
: }. `( r0 H6 b - }9 P3 l& ]. w9 @0 C1 }
- 9 ?, b, |1 @9 y4 j
- db = (g) => {//上层绘制. T% J! U* g* d% {8 @" J
- g.setColor(Color.WHITE);
% K5 ]$ E' d; M7 ] - g.fillRect(0, 0, 400, 400);) Z. ?" H, s' ~! I7 W# V- T
- g.setColor(Color.RED);
* [6 ~0 z- k u; u( e - g.setFont(font0);
2 z: _; ], T% j8 R - let str = "晴纱是男娘";
" M( q! J2 O+ [8 m5 t - let ww = 400;
7 ^) B: V c3 j9 o6 ` - let w = getW(str, font0);
$ }: B. Z# e- _2 D! X* O - g.drawString(str, ww / 2 - w / 2, 200);
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. P* F3 J) m7 v( u0 S- const mat = new Matrices(); _8 k; a+ W5 B2 y, w
- mat.translate(0, 0.5, 0);4 K2 B: a' {; l+ s" w& g
- 9 p7 o: s6 F. z' H7 u
- function create(ctx, state, entity) {
" |9 }# W! g. V - let info = {) b* P |$ A1 N1 N
- ctx: ctx,
; r$ w8 j" _# y4 N, z; j - isTrain: false,5 y, H, w% Z X* D q1 w: e
- matrices: [mat],6 L& S6 `* ]- N
- texture: [400, 400],
+ D& s" c2 G8 H: L4 {: @3 s - model: {
0 t I; V( x* x - renderType: "light",
! D! D; I/ V! @" U - size: [1, 1],
" T W- y+ e' Y9 Q - uvSize: [1, 1]9 a% f5 Y+ T `6 [( B J! Z$ A$ P
- }: e' u, [( R2 o
- }) m9 X6 \- ?' Z, m% g
- let f = new Face(info);* z( c# J+ v& H/ o3 c6 z6 H
- state.f = f;
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- let t = f.texture;
' G9 M! e8 ~5 F - let g = t.graphics;& {7 y6 l* u \0 w" e* C; u: X
- state.running = true;
/ N V0 a- {$ j7 i1 x$ t/ j - let fps = 24;
) d E5 @) ]/ v( A% G5 E" D - da(g);//绘制底图
, y3 d( q& @3 X5 r2 _. w, P - t.upload();
% C1 L4 P& R$ }2 B+ L6 n3 P - let k = 0;( r) X( J* X) K. h0 j$ U" H; F
- let ti = Date.now();: K+ c9 I6 o" p( A4 r
- let rt = 0;; @7 C3 M# L: C! E; K& T% x
- smooth = (k, v) => {// 平滑变化
! z! \& [& @! n$ q% T% k* d - if (v > k) return k;! _( g5 h9 `7 k: f) B
- if (k < 0) return 0;9 T# A& J. z6 N S3 t8 D7 F
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;: n0 {+ T, D- i& q! i
- }( W) `1 U4 T- k2 V
- run = () => {// 新线程 n1 G! c& M! i& H
- let id = Thread.currentThread().getId();! x( t0 M' V6 Q S5 I8 l
- print("Thread start:" + id);
; E/ _ `* B" z/ _/ K x3 x: h - while (state.running) {9 f% y Z, ?5 B
- try {
" K) `; b9 M; @" k, e: ^6 E3 ^ - k += (Date.now() - ti) / 1000 * 0.2;
! U- ]% C6 H9 X' K: d - ti = Date.now();" ]+ e+ _4 R- L1 r/ u- ^* D
- if (k > 1.5) {( r: R# }% F1 H' k# X# h( `
- k = 0;- Q2 w2 K! k. Q9 u, h$ h
- }, X4 a; U/ @. o& c: [
- setComp(g, 1);- i9 ~' v; b$ H& G* `; Y. E
- da(g);
3 U. ?& Z6 ~' W# Q O4 K1 O7 U - let kk = smooth(1, k);//平滑切换透明度
( n3 o% a! @' ^8 A - setComp(g, kk);
4 f$ o% ?# Q7 g2 S& s - db(g);1 p; I% S/ h& n
- t.upload();7 n! _; q7 H6 B" p+ B
- ctx.setDebugInfo("rt" ,Date.now() - ti);
7 x! o$ g2 S' j' [! V7 P5 ~7 ^: z9 m4 F3 T+ g - ctx.setDebugInfo("k", k);# F6 m f A/ F. X+ {
- ctx.setDebugInfo("sm", kk);
) N8 k: I& u" [ - rt = Date.now() - ti;2 p9 D' X2 W1 q6 n$ _/ M
- Thread.sleep(ck(rt - 1000 / fps));1 L1 B6 z I7 t8 ~
- ctx.setDebugInfo("error", 0): u' E' d! l7 R$ W' D
- } catch (e) {! m' `! J- ?% L0 J8 T4 S
- ctx.setDebugInfo("error", e);
% m. F5 T. u- L! w& W - }
$ l* v& H3 O6 }; `: |( V) d& { - }
$ E' D& ?- ^, j! i - print("Thread end:" + id);5 o. Q) j9 E% s3 Z) }' O
- }- {6 b- T+ q4 q7 H0 K5 F% d) N
- let th = new Thread(run, "qiehuan");$ O. j; |: g2 S
- th.start(); ?0 Y0 C: l" k; B H3 a
- }
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' S/ P! m }3 k* [- function render(ctx, state, entity) {
7 q4 M( G% ]4 F - state.f.tick();
# M6 {3 R9 N) L# J - }
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1 @% G: x* N% o6 ^- function dispose(ctx, state, entity) {
* A) ~/ I* {. w6 s. x% e - print("Dispose");1 ?* b1 I, A0 y, ~% L# k
- state.running = false;! B3 O4 h9 w) M6 W9 o
- state.f.close();; U" Q2 h, r* q: [/ v
- }1 i9 [0 H5 U3 a9 H
1 s3 C/ O% d3 L$ b& r- function setComp(g, value) {
/ T- V* `2 b6 U8 H6 R; B - g.setComposite(AlphaComposite.SrcOver.derive(value));2 M8 ~. B3 P: a M& n4 n2 A P8 R
- }
复制代码
$ Y% u+ b ~/ y5 O0 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。: b* w* `9 X* Y, S7 d
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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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