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- b. h8 e; x' x' {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。
- ?7 W* Q" y7 x/ x' \1 Y3 m- importPackage (java.lang);
+ q8 w. y$ x5 C' i8 R) V - importPackage (java.awt);
" q: N( Q6 o! S7 t0 U - 7 S0 \6 H- U0 `4 I8 ?
- include(Resources.id("mtrsteamloco:library/code/face.js"));: ~( c& V, f+ e
. P" @4 _6 _8 o* V! ?- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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) Z' h# V* f' O1 H' U- function getW(str, font) {( R/ a1 ]( @7 ?4 M& F! [, T+ W
- let frc = Resources.getFontRenderContext();7 }* @5 d& o' X& ^8 Y0 s2 ~ s- Q _
- bounds = font.getStringBounds(str, frc);9 A5 ]. V! E8 ]. t8 v/ X$ n# k
- return Math.ceil(bounds.getWidth());8 P5 e9 V. H! W4 J% M+ L7 L/ C
- }
7 o$ S+ V1 D. ]; q/ o) I. @+ H
2 e" K9 l. c/ J4 d5 N0 i/ c- da = (g) => {//底图绘制2 A6 P& M$ i) L- c3 m% V
- g.setColor(Color.BLACK);
& ]7 m' ^: s A+ { P" l - g.fillRect(0, 0, 400, 400);
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- . e$ s) J: |5 c3 @5 _1 y
- db = (g) => {//上层绘制: A: _1 T/ |7 @; b2 c9 s- R
- g.setColor(Color.WHITE);
. e9 h# O0 z6 X0 X9 e8 e - g.fillRect(0, 0, 400, 400);
& G3 L4 s4 g& C% Q+ E- t - g.setColor(Color.RED);
9 f4 O7 s* ]) q3 u( {$ r1 k - g.setFont(font0);
- E" q# Q# F9 l+ L - let str = "晴纱是男娘";
$ e% _/ B) d$ @; }( U! O - let ww = 400;6 G9 ?+ p! s3 a: y. N
- let w = getW(str, font0);4 F. T! P8 {5 r
- g.drawString(str, ww / 2 - w / 2, 200);6 p& b" t& H: g) _! P
- }7 j2 B: G: E& i! I) b2 K) K P. i, p
: }0 _" |" G D! h- const mat = new Matrices();2 F n# ]0 B# M0 t! g9 f
- mat.translate(0, 0.5, 0);
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z5 h$ B8 y6 i Z0 c8 Z- function create(ctx, state, entity) {
4 l- H. Y* M6 t% r& l {; Z! E6 Y% o - let info = {
5 e, \7 n1 ?7 \5 p" ?0 p' E - ctx: ctx,: L: z( y. ]5 B s& `
- isTrain: false,
$ n: p2 i8 g |, ^ - matrices: [mat],( p1 u/ T- r, W
- texture: [400, 400],
& D$ F" H; X2 d5 d - model: {0 P" p1 Z$ v* K5 Y0 [' R4 Z9 b
- renderType: "light",# m+ {. R' i; x" e4 Q- v% q
- size: [1, 1],, B1 P+ r# Z+ x
- uvSize: [1, 1]9 v$ G6 w( @ a( Y/ x
- }. [; Y) K$ T, h' D
- }
) B1 f8 u( p S( B - let f = new Face(info);. T9 I8 ]# T, `9 j- b# }7 P
- state.f = f;* K* K/ V& q6 b' O- t
" B0 y9 [5 ?6 L9 k- let t = f.texture; [: @* ~; n. f- b) Q7 G% \ s
- let g = t.graphics;7 _8 t8 B" z% z) d/ ~0 W% h' Y
- state.running = true;/ E6 G$ ~0 d% z) y4 J
- let fps = 24;
' V# g! a% P" u: F; Y3 m - da(g);//绘制底图
$ l S3 E" R6 _/ E - t.upload();/ J6 ?0 h( Y; P
- let k = 0;
8 t8 Z) D2 V) C) m9 ?6 Q% K - let ti = Date.now();
* }' I9 }. I; i0 `3 C - let rt = 0; {1 h2 h) Q- j- n) r8 Z, k6 w; z3 N
- smooth = (k, v) => {// 平滑变化 @+ U# v, w! o$ n7 ^
- if (v > k) return k;
+ }# X$ \/ g1 O - if (k < 0) return 0;: j0 K2 Y# ^6 v3 A& W
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;; V3 S: Y9 Q6 d% |; Y3 D# k
- }! F4 I" ~" Y0 m! {
- run = () => {// 新线程$ s @$ v7 b" L1 S7 V
- let id = Thread.currentThread().getId();! f( S7 d) J: \; H' n5 D
- print("Thread start:" + id);+ i, R/ }# ^$ F- f( h
- while (state.running) {* `" V8 K: W5 v3 q
- try {4 n9 g3 K! l+ x' g0 m
- k += (Date.now() - ti) / 1000 * 0.2;
6 n3 \( b' a6 Z% m. g - ti = Date.now();' X# n* P7 ^: R, s1 q
- if (k > 1.5) {4 A, M) Y" n9 g6 \- u, k
- k = 0;
* I2 c0 t/ X/ _ - }& [. |! M) W- B+ g0 o, O
- setComp(g, 1);1 M+ e, r; Q$ G: c
- da(g);
# i# J5 v+ s- k* d4 {) J$ k( e - let kk = smooth(1, k);//平滑切换透明度9 D# L, d8 X2 H4 O6 b
- setComp(g, kk);) l* s/ g( y) V8 ?; o; j9 x; x( {# p2 u
- db(g);
! P$ @5 R! `! E& o - t.upload();$ k& Q% h O9 f
- ctx.setDebugInfo("rt" ,Date.now() - ti);
; {: l" i: S' t1 o% R6 B2 O - ctx.setDebugInfo("k", k);
! [0 y+ F3 m! o/ I6 u - ctx.setDebugInfo("sm", kk);
8 L p! L2 y5 W5 y" Y# j - rt = Date.now() - ti;
7 d# K% }& k( ?# I4 O - Thread.sleep(ck(rt - 1000 / fps));* N; r: S, M" v( [" u. }# y' Q
- ctx.setDebugInfo("error", 0)+ B. i$ z- R% W- }* R) v
- } catch (e) {
2 q1 \8 V1 w. c9 h - ctx.setDebugInfo("error", e);* B# b% ?( j! y0 o" \3 [
- }
$ o" o7 e x( D; ?6 f4 l% K8 I# q - }# L( Y+ w+ ?; l! m+ r v* O! T
- print("Thread end:" + id);
F5 V: P& I) J$ X - }0 }- |& N* Y/ K0 ] E
- let th = new Thread(run, "qiehuan");
4 T: n6 H9 l& _" k# b; x8 f - th.start();
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) `0 u3 p5 Z5 q/ ^6 U; B- function render(ctx, state, entity) {
4 l" [# ?3 S7 c- I: Y - state.f.tick();+ o+ O4 [/ }: w. q6 @: @' u1 @; F
- }8 `7 ~9 J9 Q% u. U' m5 j
, M {8 u j- t( x0 b+ S6 S- function dispose(ctx, state, entity) {
7 F. b! k6 D7 c: F - print("Dispose");' M+ G& h, V" K" Z0 v4 b4 V! V
- state.running = false;' t0 u+ b2 T5 e
- state.f.close();
1 l2 Z g1 ^. }- W8 k. u - }
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- function setComp(g, value) {
B7 L4 T4 i6 K9 ]7 c1 l( o - g.setComposite(AlphaComposite.SrcOver.derive(value));
$ U/ Z: V2 l, o4 [/ ~$ N& d. M - }
复制代码
8 @! ^0 Z$ f1 a- O- @4 l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。3 m% p) o) Q# c6 [
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2 t! ?; u2 W. b; Z% X& V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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