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) p" t6 E) Y6 z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。! E/ C, v% M! h1 j4 Q
- importPackage (java.lang);: p0 k0 F0 H& Q5 o, y$ t- S
- importPackage (java.awt);
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/ W+ | X! a# B- include(Resources.id("mtrsteamloco:library/code/face.js"));7 r; z4 w+ \( _& }0 U* B
5 A: I& d5 N+ [5 S! D- O1 Q- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);, d% B7 ]8 K! W. }
- 6 ]# x9 [- Z9 m9 u9 E6 r9 f5 {: u9 N
- function getW(str, font) {! i) N" J/ V% e. W- T
- let frc = Resources.getFontRenderContext();
3 x$ e2 E2 B, b5 i/ ^8 k, b' M - bounds = font.getStringBounds(str, frc);9 L' m5 k( @ R% J: U( ] v
- return Math.ceil(bounds.getWidth());! H6 G( D7 n" ^0 o
- }/ Z. @% d* O+ [: U9 E$ z
/ C r; O" {& `4 r5 k- da = (g) => {//底图绘制
3 }& c; m, Y8 G$ j8 W& G) S" @ - g.setColor(Color.BLACK);1 Z; ~" O3 B& W
- g.fillRect(0, 0, 400, 400);
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- 4 L1 b/ A& d* p7 A$ W$ m. G0 f
- db = (g) => {//上层绘制) v' ^& _" ^1 m$ s" C) v
- g.setColor(Color.WHITE);
( `" m" Z# D6 J# X4 w+ p - g.fillRect(0, 0, 400, 400);3 c: h% a4 q' ]# E
- g.setColor(Color.RED);
% C# V9 s/ s* Z6 ] - g.setFont(font0);
8 d" Y" u0 t3 n - let str = "晴纱是男娘";
4 L. H- T/ @' o$ I2 F% ?/ L# o - let ww = 400;" j, _& a, W3 O& n. c: _( E
- let w = getW(str, font0);( d+ z. t! C( Q( N( R1 H
- g.drawString(str, ww / 2 - w / 2, 200);4 O7 z# P/ C" k5 ]( ]+ D
- }
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- const mat = new Matrices();/ B" v4 Z4 t& S
- mat.translate(0, 0.5, 0);
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2 W2 y# ^/ p/ b2 y/ h; H- s2 H- function create(ctx, state, entity) {3 V* V- g9 ?; y
- let info = {
8 E9 \1 D% c9 ]8 l% T+ n1 Y - ctx: ctx,) B& y1 r* L8 V0 y8 V$ m/ I: I+ ]. m
- isTrain: false,3 t U/ F8 P! }
- matrices: [mat],
2 T" J% N6 W% N z( h* N b$ _ - texture: [400, 400],
3 W3 x' E5 r/ j) t, g - model: {, F: ?3 J( E8 b
- renderType: "light",
; Z9 U% @. f+ ? - size: [1, 1],
2 S" Q0 z7 I% U* v! ?9 k - uvSize: [1, 1]
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- }: h; d& t0 S5 K. B0 i
- let f = new Face(info);4 O* P, z- M3 u0 Z9 R$ w
- state.f = f;6 ~# A0 l K, x! Q
, l3 R! n+ F) C: y) R% D- let t = f.texture;
# i: V0 p* n, Y6 V2 Y4 L2 f - let g = t.graphics;4 f/ n9 g& }+ g3 G. J( W
- state.running = true;
! o. X5 M6 f) ^4 J/ m - let fps = 24;' r9 Y4 m3 z+ R" O% c! t* _: n7 g; U
- da(g);//绘制底图% O. I- I: G, N2 |" S; r
- t.upload();. P& v7 l3 ~. l
- let k = 0;9 c7 M) y9 j& N" \$ f/ y
- let ti = Date.now();
9 }- C9 G) ?6 }7 r - let rt = 0;1 A4 Q' ?" B4 n2 ~5 x# s
- smooth = (k, v) => {// 平滑变化8 r0 Q4 q2 p0 z3 T2 k
- if (v > k) return k;
( B' O9 d- I4 t( ^: d% o - if (k < 0) return 0;/ M6 n: F- t" ?1 u- n: f
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;- q$ m8 y' @' }2 @' c' f
- }
, @% Q9 f0 ]( x, H2 Q* N0 G - run = () => {// 新线程+ N2 ?( F4 Y j& O
- let id = Thread.currentThread().getId();
; Q7 C T( p7 }% T7 J# j9 k - print("Thread start:" + id);
R8 B$ p" v4 F1 n4 Y, r9 J, q - while (state.running) {
; h; H+ `+ r& w* d: H - try {- }$ `2 w$ }$ E9 f* X
- k += (Date.now() - ti) / 1000 * 0.2;
" J/ O$ ^" R$ r. \. K - ti = Date.now();
7 s0 g3 G$ m0 N" w - if (k > 1.5) {# S3 S3 U$ p5 c( \
- k = 0;
" `# l$ R! ^1 i5 I - }
' I, [! c) O! Z* V0 l+ G) C - setComp(g, 1);( b0 b4 H. V$ z$ }8 }
- da(g);
# J8 N4 |3 \: L) ^( f# Q6 A9 m6 l - let kk = smooth(1, k);//平滑切换透明度
- F( ]' p( b8 X# p) e, c, A, V - setComp(g, kk);: v+ L% [9 `5 `2 A! d
- db(g);4 O6 Z W6 N+ ]
- t.upload();( f$ B1 v# t) o- p$ ^+ f4 ~+ d3 f
- ctx.setDebugInfo("rt" ,Date.now() - ti);2 o* J- q. y8 Z- \3 r% E9 K4 A- S
- ctx.setDebugInfo("k", k);+ s% q8 K6 [& ~3 z; d+ T
- ctx.setDebugInfo("sm", kk);
. l. C7 s) i5 V; e2 l - rt = Date.now() - ti;
7 n2 S7 _4 ]8 g" J+ F - Thread.sleep(ck(rt - 1000 / fps));8 {' \' g/ J, v2 P
- ctx.setDebugInfo("error", 0)
1 J1 u' R i; e6 O/ i0 N# s8 Q - } catch (e) {( i, H! T7 B* E7 Y Z$ V$ O3 ?
- ctx.setDebugInfo("error", e);) S% B" H' ]' l7 y, p
- }
V# T+ w: u1 I7 H8 I9 M3 Z; J" o - }
3 K) Q( g @3 ~: E. u - print("Thread end:" + id);. F v J* n+ D" L' U, Y
- }
' ]1 X$ g' O, N) E1 e" X - let th = new Thread(run, "qiehuan"); E* O. u6 h9 m$ l% u
- th.start();8 q% _% x2 x0 Y2 n, _$ `
- }
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- function render(ctx, state, entity) {. r& v" K2 N2 M! T6 i6 J; W
- state.f.tick();2 s" P, \- P% a) @3 }
- }
( f' I1 {/ ^9 i5 F
$ c- ^* J; Q# g. Z6 C1 n' ]( i- function dispose(ctx, state, entity) {
; f/ w! i5 N) k) z M - print("Dispose");8 {+ e# [( x/ m* y' M% Q
- state.running = false;
( B% C+ x/ k! h6 C: s - state.f.close();
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- ) C3 e* b! _: w" p9 M6 M* ?% X+ b$ M
- function setComp(g, value) {* C. }* V3 ` p
- g.setComposite(AlphaComposite.SrcOver.derive(value));: B/ y% I/ U, S1 |' Z% ~1 `6 |8 R
- }
复制代码
4 a/ y8 g! `1 ~$ c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)" W5 `5 \' R( p
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