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% s! {# o' o% Y/ J5 {5 e: W* N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。 ~2 p d m% o0 _) J
- importPackage (java.lang);
# C3 [5 _/ W/ {9 m) r6 \ - importPackage (java.awt);
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: m- f# T1 S0 i- V# V- include(Resources.id("mtrsteamloco:library/code/face.js"));
# O$ k. }- F/ A& N
8 e# x6 u- N. m) L0 I' f- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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' D8 n6 j7 |7 ~* I6 Y+ W- function getW(str, font) {4 Z5 S6 ], ?5 f/ n
- let frc = Resources.getFontRenderContext();
- L, ?- N, W% K$ {, P3 K, a - bounds = font.getStringBounds(str, frc);( y6 G" v$ t( M1 g9 }: c
- return Math.ceil(bounds.getWidth());, F6 G r2 H+ ]+ f0 j& Y% E
- }: D" f6 P% M# i
- , P# T* j( g$ Z
- da = (g) => {//底图绘制9 |# h2 [, A7 W/ s
- g.setColor(Color.BLACK);
' h5 H5 y- k; }( ?) `7 L. o - g.fillRect(0, 0, 400, 400);/ T# m$ `0 {; ~- C
- }
6 C. T- S. G' y! C- g
3 B# q( p: q6 y, J+ F0 C9 q- db = (g) => {//上层绘制' o) d" t4 ^8 d" k$ A
- g.setColor(Color.WHITE);6 [: I1 |, o: ^. s r
- g.fillRect(0, 0, 400, 400);, L# f V' N% u+ B+ N
- g.setColor(Color.RED);
# h ~3 L( m- z7 J. d$ E9 t( Y - g.setFont(font0);
) m3 R3 ?% p ]- C' S8 m$ W - let str = "晴纱是男娘";
" g( u% C1 {7 n" \ - let ww = 400;
! ^% k6 h b3 ?' I6 e% w2 |7 h. d9 O - let w = getW(str, font0);
- L1 T' O8 l5 v' Q/ t) j- F% ?! | - g.drawString(str, ww / 2 - w / 2, 200);; U8 N, I1 x1 {* X5 C6 ` V8 o8 E
- }3 H' [; `% h( v8 P# s. M8 ~6 L0 Z) [5 F
) c4 t2 d( {" n' D9 \- const mat = new Matrices();0 z! b& l+ J! D; W/ D5 o6 ?
- mat.translate(0, 0.5, 0);* Y8 h, ^- h! S/ [; X* A/ o; d1 J
& g" m$ f" ~ Q) h4 |, R- function create(ctx, state, entity) {1 r# Z, Q4 k- @' F. D! C; g( G
- let info = {
7 |- n) {9 I) q" S - ctx: ctx,3 I! }$ c9 F3 V$ k" E# i5 i: M
- isTrain: false,
. A9 F4 L1 K. B* d4 \8 ^; r6 E - matrices: [mat],9 h! b' ~/ x0 @: Z$ E
- texture: [400, 400],
3 W8 z5 `1 o; }( k6 A, Q, v - model: {3 \# j# G& h/ ^$ x- X' _$ j
- renderType: "light",6 h; i( b, I: [" w4 }7 G
- size: [1, 1],
; }1 B) W. \, F3 Z' a - uvSize: [1, 1]$ }: F. X1 B# R5 t- j! ?( ?8 `5 O
- }
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- let f = new Face(info);
, q9 m* @) D. p8 l+ Y - state.f = f;4 O9 B% n/ w# Z# ]
( e0 I _1 J/ W. b- let t = f.texture;
9 |( s! I. Q! m' ]" b8 @ - let g = t.graphics;# L) B' x! [% S' V# W$ [, n( N
- state.running = true;
5 l5 |9 p2 s; Q' R - let fps = 24;# T" `& d" O! a( W' c
- da(g);//绘制底图
& _3 M& v p$ t: [0 T - t.upload();/ o! g% N+ b2 Z! B
- let k = 0;
. T O+ `8 V6 E0 s - let ti = Date.now();2 g; \3 t8 H' C+ Q. H, |
- let rt = 0;) f: c P" |" h# g* ^- H
- smooth = (k, v) => {// 平滑变化' q$ q& h' k: f' }3 I% v. p
- if (v > k) return k;
! O% _5 [) E& s$ f( g - if (k < 0) return 0;5 W& [6 T; v( q3 j6 o7 k& i, Z
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;& a; b) h/ j% N7 [4 E' I
- }
- e' i: o: d2 ?8 \2 V - run = () => {// 新线程( ]# h- e4 Q7 C: P
- let id = Thread.currentThread().getId();
- t# [7 y' D2 R' \9 ] - print("Thread start:" + id);0 q( u) f5 @. c# O- Z
- while (state.running) {
, z+ C0 Q/ d( j- X q - try {
7 O7 u: u/ Z: o9 c - k += (Date.now() - ti) / 1000 * 0.2;7 g6 T& O+ E" R4 d0 ?8 |) L4 m, _+ { g
- ti = Date.now();
; ~1 M" s# a O! N8 ]# g - if (k > 1.5) {0 C$ V: c+ y" w" p$ C& ]$ }! p. I: q
- k = 0;2 D) g0 s0 W- S ]# E# m
- }
. W6 E. v$ s# G - setComp(g, 1);
' X* j. p- K4 u; R" J; t - da(g);
# U! a* k9 N, g6 C- o) o* H - let kk = smooth(1, k);//平滑切换透明度8 r; q/ M# m: b( _
- setComp(g, kk);9 C& l' P+ I; S% g$ E0 B
- db(g);% N4 m; k. y: ]9 T4 Y. f( `
- t.upload();7 f; N( \# T6 e' t
- ctx.setDebugInfo("rt" ,Date.now() - ti);
7 N3 W# _5 c& P o6 z S9 E - ctx.setDebugInfo("k", k);
! a+ O2 t# z2 p4 _) k - ctx.setDebugInfo("sm", kk);
9 T% j# I# p! I* }* X - rt = Date.now() - ti;
& w6 ]' y( @- k3 v4 _ - Thread.sleep(ck(rt - 1000 / fps));/ c1 F I/ Q5 U
- ctx.setDebugInfo("error", 0)$ @, \0 f' ]6 j, p( B' i P
- } catch (e) {
# i4 u1 H4 c6 E7 |7 \0 q - ctx.setDebugInfo("error", e);# i: N5 {8 m5 _8 K5 v# M
- }6 N# D# r7 X/ h- V$ O3 i
- }: J; p, I, k$ }: H/ \+ F: E4 z# M
- print("Thread end:" + id);
9 |0 t( C$ B8 {6 q# s3 ` - }0 V, V8 W: H: V) C
- let th = new Thread(run, "qiehuan");
8 {7 P# Q, |1 z. h5 \( @ - th.start();
- g$ ?) B" w. G - }" G% U0 s0 D) L$ J3 @ s
- ! K, B1 O1 R/ Y* }) z6 U
- function render(ctx, state, entity) {# ]9 f r# c f6 e! D
- state.f.tick();, _" A2 Y3 |+ R' s
- }' g2 a4 V8 \5 M. }( c2 \
- , a8 ]1 y3 J/ s& z
- function dispose(ctx, state, entity) {
. k- N! F9 B3 }/ k' u w8 h - print("Dispose");6 X9 \9 U1 u/ s }- n1 z
- state.running = false;- Z; r9 y3 c7 U- `. V1 A R- [8 i
- state.f.close();
1 [, E! ?! U7 G - }
- U4 v8 s, R4 Z; t- A - " b6 r$ v6 k7 @/ }
- function setComp(g, value) {
4 G# Z& |& V" c+ {- r: k$ P - g.setComposite(AlphaComposite.SrcOver.derive(value));9 H: Z! K0 y9 K# ]5 A
- }
复制代码
7 H- N( J7 J! U3 q7 b) |2 [8 d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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