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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。9 }' E/ A( T! c {7 C
- importPackage (java.lang);
' b; a& |3 l5 Z8 b2 a3 S, N" A: j - importPackage (java.awt);) ^% J& i- m0 P7 X, A5 p1 J
- $ [6 O8 u( {& m' ~" H- y' z. z
- include(Resources.id("mtrsteamloco:library/code/face.js"));
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- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80); N5 s$ l4 Y+ J! B5 [9 U
6 Z$ L# A3 Y) f i/ b- p$ Q- function getW(str, font) {
( D t7 r d" F& x6 \( z" C - let frc = Resources.getFontRenderContext();9 n6 [, J" t; z3 w6 P' V
- bounds = font.getStringBounds(str, frc);( @' [! `8 T; `- ]
- return Math.ceil(bounds.getWidth());2 O' Q0 L: W( n
- }; k$ W0 q0 L+ \1 b. Q, R
9 ]5 L( @3 J/ [- da = (g) => {//底图绘制, K. [8 }2 ]! X- K5 r
- g.setColor(Color.BLACK);
: T4 N' V, q; ~( W1 X8 ? - g.fillRect(0, 0, 400, 400);1 e- X. c/ R% k7 W, [6 s
- }
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# u* s8 `% F" }+ t1 d0 |. W" p- db = (g) => {//上层绘制2 o8 Y! Q$ l) _/ ^& d! |
- g.setColor(Color.WHITE);
3 W+ q" f: e. j# z' | - g.fillRect(0, 0, 400, 400);. E9 ^! E% x! A' [& K5 U
- g.setColor(Color.RED);6 s2 Z" O: O, Q0 _0 W+ |( ^
- g.setFont(font0);
+ x7 K! V- z A5 J; O - let str = "晴纱是男娘";" D0 C) V/ Z1 m$ n
- let ww = 400;
3 T1 ?5 b' b. K1 x( ^5 m - let w = getW(str, font0);2 e7 S. X9 c# K5 W& I [
- g.drawString(str, ww / 2 - w / 2, 200);
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- & C1 {9 h8 ^4 D i
- const mat = new Matrices();
. C; ]+ _9 O4 m1 ^- c+ G - mat.translate(0, 0.5, 0);! O6 m, F% v. h8 N Y. E8 m
- * ]$ f' l& V; [' X/ U
- function create(ctx, state, entity) {
3 d4 D- D2 K, h! V' F1 H$ x - let info = {
+ }, T9 c8 \, W F! u- O - ctx: ctx,
5 E# {) F% J: k- @ G - isTrain: false,
; r8 s2 h1 ^2 D ]6 H% H) j - matrices: [mat],/ U/ Y0 S7 W- \1 F
- texture: [400, 400],
" d) y+ d$ I5 ]7 R - model: {* E; Y4 L, E" }2 M+ m3 |3 p
- renderType: "light", H0 {" H' j5 G% c1 R
- size: [1, 1],
; I. `: o( d5 d2 |! X7 F - uvSize: [1, 1]
, F1 I; n: g7 f- `0 x+ a' S- h - }
5 f3 m ~- f* \+ |$ P9 V8 U - }
3 D0 i/ A0 c5 z! H4 l: z - let f = new Face(info);
" r( T b, O& k1 S6 c6 j# K7 g - state.f = f;
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- let t = f.texture;
8 ~' \* i3 _: x3 I0 U - let g = t.graphics;
. Q4 a% D$ s& z5 o - state.running = true;4 j$ t* u0 h6 [6 s* u% i3 |, C
- let fps = 24;
6 M' V2 P5 L: W8 J% `7 q% n+ @3 Y - da(g);//绘制底图
+ m5 n# B& i% u - t.upload();
: `- s! ~( a8 ^! O - let k = 0;
0 h. r" h8 ?, z& s - let ti = Date.now();$ T$ S3 R+ W! U( p
- let rt = 0;6 q4 Y$ ?# f0 H9 n# m% A
- smooth = (k, v) => {// 平滑变化, v2 }! i8 I9 I4 G* o
- if (v > k) return k;! _3 K4 T0 M) l' ]' c
- if (k < 0) return 0;9 ?2 X# V' P+ b) {5 V) S+ S
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
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- run = () => {// 新线程. n8 M: B- w) S' }" w
- let id = Thread.currentThread().getId();
; J3 r; c: S5 {2 B1 I' G1 [% n - print("Thread start:" + id);' x4 s9 p- p5 h& X, L
- while (state.running) {
0 E8 i8 y# e6 t - try {* }2 L: a3 U! ^, a& _; |* T
- k += (Date.now() - ti) / 1000 * 0.2;
/ z G' i& i L' @- {# Z+ \6 L - ti = Date.now();/ [& E3 I- Y8 Z" n( y' e3 J# z
- if (k > 1.5) {: P! f1 k* s) g+ a
- k = 0;
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- setComp(g, 1);5 g4 K: e5 B% a9 \0 K. n( F& d$ B5 A
- da(g);
; O$ n R. P6 {. g2 R - let kk = smooth(1, k);//平滑切换透明度1 a8 x" I0 a. d. g. Z7 \( Y7 |
- setComp(g, kk);; G* D6 {: `* U9 l7 \: z- E
- db(g);0 a7 x$ o! M6 G& q1 W Q2 N
- t.upload();1 ^# X9 `6 v' ~% z ] G
- ctx.setDebugInfo("rt" ,Date.now() - ti);
; K5 |2 {. H+ o2 Z& t7 S - ctx.setDebugInfo("k", k);! d' ^( {; R- F
- ctx.setDebugInfo("sm", kk);
+ R/ H5 O* \9 f; z1 Z4 \ - rt = Date.now() - ti;
, a* p8 ^# u0 z+ C. h. w+ q - Thread.sleep(ck(rt - 1000 / fps));
& {' J' u% P5 F2 l3 D3 L; q, Y0 G - ctx.setDebugInfo("error", 0)
( o M0 _0 t4 ?. M5 Z8 c5 _ - } catch (e) {. Y! I1 n2 j9 K7 Y2 [4 i2 z8 _$ X
- ctx.setDebugInfo("error", e);% [& a3 I- i7 Z4 M
- }1 D1 G, J) ?$ t% A W* Y- @
- }
' I x3 Y, Q) l! } - print("Thread end:" + id);+ {: F6 \5 {7 t2 Y! S
- }: T: }6 U( x' D$ c
- let th = new Thread(run, "qiehuan");% f- h, q; o5 i8 x5 i
- th.start();
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: O0 S8 [5 N- Q3 [) H% o2 l3 @- function render(ctx, state, entity) {2 r, T! Q$ H" Y" j( W |6 v
- state.f.tick();6 q' w; }. Z: j
- }
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- function dispose(ctx, state, entity) {
! l! Z5 O5 k; }0 [ - print("Dispose");2 S5 R4 J, a1 j( G* B0 z
- state.running = false;) a% ~- _4 p) {+ T# J
- state.f.close();8 n- a1 S& B2 s* w8 t0 C- \
- }4 f; i, |1 p- H/ @0 j# A4 U5 S
: K& K- z# w8 P- I+ c W6 K- function setComp(g, value) {
h; R# D4 f7 g - g.setComposite(AlphaComposite.SrcOver.derive(value));2 A$ L$ D8 v+ B4 u8 C0 F
- }
复制代码
* t+ Y: d1 F" r% z' [9 ~8 `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。1 i7 O1 t) d! K
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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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