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, g9 P, h2 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。0 o" V6 T+ p7 _6 k
- importPackage (java.lang);
! W( ~$ M7 M/ v6 W! n. M9 }' o9 z - importPackage (java.awt);
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( e$ r. [6 |# F) c- include(Resources.id("mtrsteamloco:library/code/face.js"));7 Q2 T7 n! d3 t- P3 j
" W% [. Z* l1 I$ t, U- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
/ J5 G# w( F% D/ k - 8 P0 V* X3 T# e; c" b, t
- function getW(str, font) {8 y. A% ?. U1 v0 t! G; }, F
- let frc = Resources.getFontRenderContext();% w/ X- Y( o. S; Q" q+ R
- bounds = font.getStringBounds(str, frc);& z; w0 e/ Q. U$ z T+ I
- return Math.ceil(bounds.getWidth());
7 z/ y# ?% o! ~( @5 Y - }
+ ]5 t$ K6 d# m C4 H% h$ S" j
" Z r% Y9 [. L: V4 e# P) e9 I- da = (g) => {//底图绘制* ]8 y7 n2 G/ V, D+ u7 H- Z
- g.setColor(Color.BLACK);! L' B0 P. l: g
- g.fillRect(0, 0, 400, 400);
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- R2 q' B! b; f/ P' `" E& `
- db = (g) => {//上层绘制9 C- p1 Q2 I, ?1 V( W
- g.setColor(Color.WHITE);
& T( C a$ g) w0 F5 t - g.fillRect(0, 0, 400, 400);$ U5 b0 O- V! r- o1 j4 D
- g.setColor(Color.RED);
/ W/ b' ~ M, P0 v. p8 h - g.setFont(font0);) N+ |- N; Y& Y" U5 p
- let str = "晴纱是男娘";
6 W# \& N# b: S$ B' J g. y - let ww = 400;; ~# x; g6 @. Y' k* \) N
- let w = getW(str, font0);
3 W# x y6 G+ P - g.drawString(str, ww / 2 - w / 2, 200); q% }9 _- ]- S7 q/ S6 U; P& l# C
- }
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- const mat = new Matrices();( }, d- P1 Q& V+ E6 o+ m
- mat.translate(0, 0.5, 0);; s4 T( P/ U' \2 j* O4 T
- # {, u2 ?6 x( M/ b. Z4 S6 q7 Y5 b- R. |" }
- function create(ctx, state, entity) {
6 V% r. H! l% H - let info = {+ z5 N9 ]2 J& J6 M7 n7 i7 l
- ctx: ctx,+ h7 E6 f/ u: j8 {
- isTrain: false,, d7 @7 Q2 Z. n) x& T
- matrices: [mat],
% [; e9 J& x# L+ q - texture: [400, 400],
9 c4 u. I! g: @ - model: {
3 K4 T* J5 \; Y# {7 A+ @ - renderType: "light",+ L! F& Y, |- e& s6 y- `
- size: [1, 1],
- J0 u) X. v. @! a' w0 { - uvSize: [1, 1]
& }; k a) F! e6 @, k; W- ? ] - }
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- let f = new Face(info);7 Z1 H+ A- i( x' W
- state.f = f; \; V2 @/ h3 s E7 ]) H! w
- 1 E" E; h2 e+ Q3 m! v; v. v
- let t = f.texture;$ m: E4 q( |6 S
- let g = t.graphics;, D# p7 p$ P5 H, x& A
- state.running = true;6 _3 \0 b0 L' {+ M+ t, u
- let fps = 24;3 R( w. B# c1 a h1 G6 B
- da(g);//绘制底图
6 n; G, s6 e6 o( l* Q) i; |4 z - t.upload();8 i/ ?& u9 D! d4 T& }# r
- let k = 0;
5 C- w; f" I4 K9 J2 V - let ti = Date.now();
1 _! R4 E ]" Q, f/ _3 ]6 G - let rt = 0;
6 ^3 e+ v1 z' |& @ - smooth = (k, v) => {// 平滑变化6 C# A' p& R9 l0 m( k
- if (v > k) return k;
8 ]" c0 a0 w/ U, C - if (k < 0) return 0;
9 N* j" u7 V4 Z$ Y - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
$ s) h5 J9 q* R5 N - }( f: { d2 o- V
- run = () => {// 新线程
" y5 a/ G2 L9 M$ n) i: b; n - let id = Thread.currentThread().getId();; G3 m; ]3 O! l/ N/ Z# Q% H
- print("Thread start:" + id);4 m/ D( Z9 f- N( }( N! c
- while (state.running) {2 x8 x1 ^, s5 x5 f3 \
- try {
' z9 [% J- `$ S0 I1 v4 Y# E, t - k += (Date.now() - ti) / 1000 * 0.2;
& H0 k* y3 b# \% }1 \8 v) e - ti = Date.now();
7 r3 P5 o1 G J$ c) \6 i! e - if (k > 1.5) {& b6 V% u `% C4 f
- k = 0;9 L0 N: W$ u3 T2 B* a
- }
J$ C3 z5 h3 _" i9 c - setComp(g, 1);
- i. C# Z3 E* l9 b* Z1 P0 I. o" B - da(g);
0 E; K, |9 Y0 u4 D0 m9 M - let kk = smooth(1, k);//平滑切换透明度
. \2 u/ A% @8 \" x. b8 J - setComp(g, kk);" ?, V3 x( K$ A# [1 B
- db(g);1 M. P, n- M- i. }7 Y# N; ~
- t.upload();
5 E7 `9 q# j8 A/ n& H - ctx.setDebugInfo("rt" ,Date.now() - ti);
% j$ ~3 L% D. N* B7 m V$ O - ctx.setDebugInfo("k", k);
4 Z! p. k3 {: ^: p - ctx.setDebugInfo("sm", kk);
* J1 u) T3 w! u! C' G - rt = Date.now() - ti;$ N/ t6 [* B$ A1 ?
- Thread.sleep(ck(rt - 1000 / fps));
$ p- J3 u) I; x7 k: D2 R! y - ctx.setDebugInfo("error", 0)
7 |" L5 ]8 h+ L6 l2 Z - } catch (e) {6 Y0 v2 e: l' H+ _* d2 C
- ctx.setDebugInfo("error", e);+ i7 }2 I7 M* |) d; }' d
- }
. X0 V2 \% t9 c! u - }0 L) Y/ P8 d- H- L7 Z7 N/ @* u
- print("Thread end:" + id);% B1 o7 f, ~& g; N X6 q7 i# ~" o
- }+ p% ? R. b. A7 L* _5 t) k+ C
- let th = new Thread(run, "qiehuan");) `2 ], I& a) o, H+ h
- th.start();; _/ e d7 l( {! G
- }
7 E; _$ k: T/ ~& `: ?" Y' V( M
7 O' g" v3 g8 N! B- function render(ctx, state, entity) {
$ k d ]- D% j" Q* }1 H - state.f.tick();
4 ~ a& Z+ b) i% U - }' E; D$ Z6 s1 U( P# R! I# G( z$ C
- 6 v' `& z& ]7 _% d1 V* o, M2 i
- function dispose(ctx, state, entity) {
( a" t7 E( V9 L4 L4 O' v - print("Dispose");
, m1 }6 m( e1 ]) u, A' x0 m - state.running = false;0 [, E9 l5 u- |
- state.f.close();
9 k" u4 N8 S; w) `) h; T8 N+ A - }
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- function setComp(g, value) {' ?& m# j; L2 B) }' {4 F1 T
- g.setComposite(AlphaComposite.SrcOver.derive(value));
+ m6 Z7 s, ]: v1 i3 t7 ~ - }
复制代码 ) f$ y9 A3 |( `4 d2 p
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。: _* M5 ]6 O% t! r% D, C+ z
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7 L+ Q `( D& n顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)0 ^: p2 o0 B+ _. ?* v
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