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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。9 S2 O5 r( \+ v' E: E$ Q- e
- importPackage (java.lang);1 y7 d* V+ I3 w# l
- importPackage (java.awt);
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$ M( }& }/ c; z3 @* A* Z- include(Resources.id("mtrsteamloco:library/code/face.js"));
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# o: }9 x% A- E% m1 g; ~- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);0 M% j# [: c5 T" K% ?* C* v
" {& x+ C, K! g+ }% u6 ^- function getW(str, font) {( E. C2 I4 B) m3 Q$ {
- let frc = Resources.getFontRenderContext();, u, ` _' A, O+ S3 L
- bounds = font.getStringBounds(str, frc);. w2 d0 D1 t2 Y
- return Math.ceil(bounds.getWidth());
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- # M& ~9 \8 ?( @1 y1 k' S7 T
- da = (g) => {//底图绘制' W% j( O% w4 |' E- r: U9 g- l
- g.setColor(Color.BLACK);6 y& n; T1 U1 I7 H% f& ~8 K
- g.fillRect(0, 0, 400, 400);2 E' _2 b4 x4 u9 P: J+ b. w+ L
- }8 h! r; t) `8 q3 u( ?% [) v0 ]/ l6 R; F
0 W! N5 f' l% s- db = (g) => {//上层绘制$ [% P) P1 j# \7 V
- g.setColor(Color.WHITE);
* X$ a1 W# E" Z - g.fillRect(0, 0, 400, 400);5 V& U4 @" ^' }
- g.setColor(Color.RED);3 K& l) }+ a; k3 k* I# j/ X
- g.setFont(font0);5 N* R+ i0 j. I4 [
- let str = "晴纱是男娘";- u) d' ^) C% N+ Z. E1 v
- let ww = 400;, u; X, [6 c) J- {, {
- let w = getW(str, font0);
8 q" C8 L% {. h% E7 o8 y% J. T - g.drawString(str, ww / 2 - w / 2, 200);0 q( u a) b) \5 z8 D
- }
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g: X g% C" ~9 y: R- const mat = new Matrices();, _* h# x, f/ _0 K
- mat.translate(0, 0.5, 0);- W0 u6 I# B. {2 P* O
- ' j8 ~* p( O1 F5 G! R' v
- function create(ctx, state, entity) {. @( F9 C5 T! E/ f% \3 L
- let info = {
+ f6 I8 c8 I. }- a4 [0 s C9 i - ctx: ctx,2 y% M$ z6 {6 M5 d4 Z9 T
- isTrain: false,) L5 ~" p4 K0 b) D! A
- matrices: [mat],
/ X2 z2 x* \+ q2 {8 `: U - texture: [400, 400],
. ]+ M3 L9 P3 y; D* u; l# H - model: {
8 p! L( `- Q4 S! m r2 { - renderType: "light",
4 {6 r" \$ k+ J4 W6 j& Z4 t - size: [1, 1],2 W- I$ h: i9 L* r
- uvSize: [1, 1]
f; i5 u% d) z1 X( s6 p2 Q - }
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- let f = new Face(info);
" Y: P1 O; j: E0 V* ?! Z - state.f = f;5 }, l, L7 a. W( E% h
6 f- {9 r: Z! l) o2 \5 _! D/ ~" W! W. {- let t = f.texture;, I! ]0 e2 U6 R- y+ ?" W. E
- let g = t.graphics;3 k$ l y- f5 j8 B- s. D' b
- state.running = true;) ]- Q& U4 y- [7 s/ \+ O( L! a; S
- let fps = 24;
4 |0 \: |! X. J" a - da(g);//绘制底图
4 C6 y: K) Z; y9 j2 Z - t.upload();
: S% p/ f* U- G" C3 K6 r - let k = 0;
- q7 }, F1 \6 G( `7 w1 o% ]7 B - let ti = Date.now();
G- g6 j5 w! ~$ C5 V# o4 r) M - let rt = 0;6 T+ \; E3 G( q6 u N
- smooth = (k, v) => {// 平滑变化
" a! {7 D$ ^' Q W3 y7 \ - if (v > k) return k;
2 f# D) B: M8 m j - if (k < 0) return 0;$ f5 U& I$ k# P% S: e4 Q# @2 y6 x
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;7 C0 B1 o# n2 d$ o% L9 A
- }: ?+ s+ b, @6 H {- c) O
- run = () => {// 新线程
& q. W( e4 m6 H; b - let id = Thread.currentThread().getId();
0 a+ O) a0 t0 n/ @ - print("Thread start:" + id);
2 D* N! g' s+ F! w8 j - while (state.running) {# n1 T6 E6 O% R* C$ Y
- try {( B C- C o. I8 a/ ?, D: r
- k += (Date.now() - ti) / 1000 * 0.2;& l* P0 h& i/ z. ?3 Y3 z# p, m
- ti = Date.now();: ? w. l! X& |) E
- if (k > 1.5) {" e- h3 ~6 t4 C7 Z: E; s
- k = 0;
; r% f3 B& `. I8 B3 V$ O - }
/ Z% a# o y; M0 r' Z. z" J6 h - setComp(g, 1);8 y$ g, G9 ^3 R3 O+ S; Q4 l+ P6 U
- da(g);
- F. q- P o W t$ } - let kk = smooth(1, k);//平滑切换透明度
8 C3 R; R5 P8 P& v% o3 I) T* c A - setComp(g, kk);
+ _$ S6 e4 E" g) D - db(g);6 W W. }* r! L3 H9 l# `
- t.upload();. H! M' U' M: e4 X9 N2 x2 {
- ctx.setDebugInfo("rt" ,Date.now() - ti);
! u6 K% J5 {% _- ^ - ctx.setDebugInfo("k", k);
2 f% j7 |! R4 T/ t+ {: r - ctx.setDebugInfo("sm", kk);4 z# ~+ p7 f( d7 T1 S
- rt = Date.now() - ti;
: t' ~+ v$ K$ }4 p( T - Thread.sleep(ck(rt - 1000 / fps));" N' T( n. g$ V% E1 G
- ctx.setDebugInfo("error", 0)
& D+ \5 D/ O7 L! e( W0 \4 i - } catch (e) {
7 a8 ]+ B$ H" E" b! x2 I5 D - ctx.setDebugInfo("error", e);( D, U c! {5 b+ g* s, E
- }
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- print("Thread end:" + id);
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- let th = new Thread(run, "qiehuan");. H( q+ d/ @4 B+ E' E e& e
- th.start();
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& A! Z) _+ N0 q6 W9 P7 ^+ N" u- function render(ctx, state, entity) {
* i0 D$ i; u* _; p - state.f.tick();
0 M7 h# ?; c$ ?2 Z. L - }
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- function dispose(ctx, state, entity) {
5 K$ M Y8 E2 I" Z- C1 R; j - print("Dispose");/ f8 Q h8 k l3 j6 E% z& v
- state.running = false;
& V3 ^5 f7 J6 P& s+ ] - state.f.close();
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. ?5 V8 `7 X/ W- function setComp(g, value) {
6 k) K; [: d; u5 j' x - g.setComposite(AlphaComposite.SrcOver.derive(value));
; |/ M3 @# ~! y - }
复制代码
. C6 e0 T0 |) `' _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。 G) h3 o. Y. E/ B
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7 H% M& E! u! P' d' x顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)3 K3 o ^( W% [
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