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1 \. H7 J" s/ e: R4 b; c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。 M2 F" E. A% ^# S2 @, Y
- importPackage (java.lang);; [2 G) h7 f- H5 p
- importPackage (java.awt);
$ l4 P7 g( o: e- J* `7 `+ y7 h - 6 \9 m' X+ C& {
- include(Resources.id("mtrsteamloco:library/code/face.js"));* J, k$ U, f$ t, T; T# o
8 k: M, M' t. ]- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);! N# E+ H/ s# l n
* S) D1 T! A% I- d d) Q" ^5 Z3 T- function getW(str, font) {
: ~1 A1 H# \+ Z# _ - let frc = Resources.getFontRenderContext();, }" g0 k7 V5 K4 `1 i
- bounds = font.getStringBounds(str, frc);
7 z! r3 `- o% M6 a& ` - return Math.ceil(bounds.getWidth());$ y ]" q# l0 s2 A+ n) f
- }
* N' @$ P/ f; H3 v& W% q. o0 S L - ; W/ p' ?2 ]$ M( `* z
- da = (g) => {//底图绘制
0 }9 v5 m" {5 o( X/ z: p - g.setColor(Color.BLACK);
* Z- z" o( A5 V - g.fillRect(0, 0, 400, 400);
- i$ k2 L; S. I! r( c, A: J - }+ c& C- o5 n: F& ~! \7 }
- 3 F1 o# Z. B+ F) l' p
- db = (g) => {//上层绘制: o& p9 B2 _& }- g8 x+ g8 X
- g.setColor(Color.WHITE);
g# e! ?1 Q# m# A - g.fillRect(0, 0, 400, 400);6 M7 V; q" C4 U5 D; l. n4 Z( S+ Z) |
- g.setColor(Color.RED);# S2 a. q4 f; g- W2 U' s- V' n
- g.setFont(font0);5 ]# |) Z' d8 D9 a
- let str = "晴纱是男娘";. w$ u1 ], v3 O9 ]' q1 l. X1 [
- let ww = 400;
# t0 q0 d4 T+ W+ Z! |0 t+ }( r' V7 Z! c - let w = getW(str, font0);
$ n# ]& X6 a8 B9 |$ }% m% y, `: s - g.drawString(str, ww / 2 - w / 2, 200);, f# c- C% a3 A; A- A
- }
: R f0 U& b/ n8 S
4 t3 M* k6 N1 h9 M$ ?- const mat = new Matrices();
* u3 J$ B7 f& N" s- L2 U - mat.translate(0, 0.5, 0);
, t, _$ x8 f5 t - 3 W( |! J0 ~$ b, q) P
- function create(ctx, state, entity) {$ ~6 v1 g% u# K2 ?
- let info = {4 I2 K: w' W$ z) y5 K4 B9 N0 r
- ctx: ctx,7 S1 P1 V$ W* T7 U4 z* m m- N
- isTrain: false,
' B4 s, n+ n( p6 P5 l/ \0 _ - matrices: [mat],+ g7 S1 Y$ V& J' D" \" b
- texture: [400, 400],. Z! K. \, z7 K0 ^
- model: {
; L& y% l" r: A8 t! m9 ` - renderType: "light",
& Y" Y: e3 h) I! X, X' O$ I - size: [1, 1],
$ J$ w$ q( L- z) ~5 [1 q. g - uvSize: [1, 1]; h% T+ I; r) v$ @; m$ ?; q( Z
- }
6 H5 l& G4 g i" I - }
% E2 F6 K6 f! x4 l - let f = new Face(info);
& z- X7 x$ Y) p5 d6 A5 t - state.f = f;- ]& d u) \4 M& o ~1 x
- _. U" i6 _+ h( B9 M. j, P" d4 M
- let t = f.texture;) r4 C( r7 j. F0 \/ s8 y" m
- let g = t.graphics;; n1 B! Z& ~- D$ }) n# u5 \& x
- state.running = true;6 [0 X# o( p5 K
- let fps = 24;
# [9 d& m% l9 K/ f; k3 I - da(g);//绘制底图+ a$ {: U: |* S
- t.upload();
$ m7 D! M. G4 M( r. y1 Q - let k = 0;
; b! C3 M2 j1 j4 |5 L; K0 ?7 N - let ti = Date.now();
* ~0 d$ | I$ n# s6 J" z' a3 j' j9 D - let rt = 0;2 F, \; _/ I# f3 w/ ]8 x& ]: }
- smooth = (k, v) => {// 平滑变化
2 H- Z7 P# h# q - if (v > k) return k;( u4 n/ `; s1 B w6 ~6 ?' g$ c
- if (k < 0) return 0;
5 E& }9 ^" P0 ?, |. B, g0 j. H9 }; W - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;) u- Q7 |" j! r$ S7 R9 Z9 x, C
- }2 j" H% {* ^7 x+ u5 O' Z: g i
- run = () => {// 新线程
3 ~9 Y; ]0 H/ N0 Z - let id = Thread.currentThread().getId();3 O7 S( i1 C) Q+ l
- print("Thread start:" + id);) i9 P- C# Z% V8 y9 p, ], P4 N5 M
- while (state.running) {6 m" N" M5 G# G7 L1 Y
- try {$ M; w# j$ a$ j+ H9 k# c# j7 f
- k += (Date.now() - ti) / 1000 * 0.2;
5 S. @# a! Z* y - ti = Date.now();7 @0 b" P$ q$ D4 f: N
- if (k > 1.5) {" \( X& Z! y+ w& H- _( X
- k = 0;
* @9 n+ {8 F$ u K( P0 n - }: [" Y& D3 Z: c3 Q. ?7 t$ A7 w
- setComp(g, 1);& h; n& j" K6 f$ t$ n5 C, E
- da(g);0 \5 Y$ M: s' \; `- _
- let kk = smooth(1, k);//平滑切换透明度
2 p) s% @9 M# V6 N - setComp(g, kk);
7 M: r2 A( f) k9 n" O" C - db(g);" z! J( l8 g2 E, R% V6 A5 I2 i' y8 _3 y# a
- t.upload();7 `: I, Y8 ] U! ^: f, k! G
- ctx.setDebugInfo("rt" ,Date.now() - ti);
; A, f6 T- F9 ^ - ctx.setDebugInfo("k", k);6 Y: l* |0 |4 Y, X
- ctx.setDebugInfo("sm", kk);6 ]3 |4 R( z" i& ?7 r, X
- rt = Date.now() - ti;
( I3 M% I2 k+ f) B5 V% s - Thread.sleep(ck(rt - 1000 / fps));
9 h2 i# Y* M) U" x' `9 r, X - ctx.setDebugInfo("error", 0)! x* W9 I1 D* U7 f0 d' y1 {
- } catch (e) {
: Y. H/ o n$ W+ X4 F* \& | - ctx.setDebugInfo("error", e);
5 U4 _' `8 e1 u; d; O6 v! |1 m+ f - }
1 j2 Z0 n5 i, N2 n/ b, X: O0 R - }
/ E0 e8 `& o* ` x2 a - print("Thread end:" + id);
/ l+ i3 T: P3 C# D" [ - } Q9 ?2 m' h$ P: O
- let th = new Thread(run, "qiehuan");6 M3 L( v3 r/ \" K0 ?$ ^# _
- th.start();5 O4 O) Y7 @) m7 `# g
- }$ I% \5 a: @ o
8 {) j/ R, h* Y3 x# {0 ~- function render(ctx, state, entity) {
6 h2 O8 ~ ?6 m2 q& s - state.f.tick();" a: F. _' o, c/ J
- }
: R/ \$ T& b* C+ T, ] - - w r, [6 f y$ l3 b5 _* t/ Q9 O. L
- function dispose(ctx, state, entity) {
: H0 k( P- r8 l3 ^6 [8 [ - print("Dispose");
/ }7 t" z ^% H v - state.running = false;) o+ @4 H: y( D' Q8 S1 d
- state.f.close();: P* V: E& Z0 W" d
- }8 }3 H# [/ \! O# ]$ ~
- # |' H. o7 ~* L2 q* D- t
- function setComp(g, value) {
# e: p- v& i/ d2 w% O; A' W' b - g.setComposite(AlphaComposite.SrcOver.derive(value));
6 s7 V6 T1 `; c! s - }
复制代码 : d9 n6 }( @3 r) w
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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7 S" s0 W9 |! N" ^4 i) D
8 t. _" K$ m0 f1 e" y顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)6 W" ^; p$ H8 O0 u
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