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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。; a* w9 W$ S# ?; c
- importPackage (java.lang);' l' O8 v# `% Y+ k# g) N' w& P
- importPackage (java.awt);
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. B9 y! l9 d& C8 i) k# u- include(Resources.id("mtrsteamloco:library/code/face.js")); o6 O8 `; v" O" g' r3 w$ e
3 a$ w/ x' ` X9 U7 `# V$ P2 r- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);; ^+ J: K2 n8 b4 |/ `
- e4 f. ^; t, Y- a: I3 \; g- function getW(str, font) {6 x! E# O6 i) ?* Q+ h8 y
- let frc = Resources.getFontRenderContext();
+ }/ |' k/ W7 T3 q$ z2 G# d - bounds = font.getStringBounds(str, frc);
& P& V. ?. F# B: u - return Math.ceil(bounds.getWidth());
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- N0 N) x/ y0 O- e: S6 }# {
- da = (g) => {//底图绘制$ t! ?- F( }/ H' ~8 b; `. ^
- g.setColor(Color.BLACK);6 t# W: x% B$ X2 ]
- g.fillRect(0, 0, 400, 400);2 j. W" v1 G1 f
- }
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- db = (g) => {//上层绘制* I4 a- @. `$ o& u
- g.setColor(Color.WHITE);4 n) e8 O( h! d. g H6 A8 ^+ @! ~
- g.fillRect(0, 0, 400, 400);
1 g7 y: t r7 A - g.setColor(Color.RED);
0 O5 L% [. l4 W7 q" I - g.setFont(font0);
! j: u' A: M8 [% e - let str = "晴纱是男娘";9 Q1 [2 P% G1 P, L6 o5 e
- let ww = 400;* Z! F1 ?4 w# V& Z
- let w = getW(str, font0);
8 g5 \! X- S' I9 Y6 t4 \4 v5 s - g.drawString(str, ww / 2 - w / 2, 200);
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- const mat = new Matrices();9 C2 ?3 E2 Q6 M1 ]# ^
- mat.translate(0, 0.5, 0);3 b. r' r# @8 w N/ E
+ x8 W" H/ h9 L8 x3 U- function create(ctx, state, entity) {
+ L' j6 s1 A0 a4 ]8 f, R3 E - let info = {8 x$ _5 J+ l R( e
- ctx: ctx,
" K! G# t; d) s! f - isTrain: false,
y0 x3 f# J- P- T0 y# x+ m+ d% d - matrices: [mat],
! U8 L. R! n5 \3 b: n5 b - texture: [400, 400],% J( m4 S; X3 F: Q4 a: `) O
- model: {* z0 U- X5 w7 P- f" A* Q( y, f* f
- renderType: "light",* e# d, l' [, w! f
- size: [1, 1],
) v* e: i5 ~* F8 } E7 H( N8 \# j - uvSize: [1, 1]5 B8 j Z& U. Q. G" I+ x, \/ f
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- }. y- d, ?3 T: a8 x
- let f = new Face(info);+ z5 S( `: E' E" \0 v2 ?9 K
- state.f = f;' Y6 L% r7 t6 D7 l& L" c
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- let t = f.texture;; v6 n6 k3 z) k; W. }
- let g = t.graphics;# r R: n1 { Y/ n' R7 y
- state.running = true;/ ]3 r4 k- K5 k- ]
- let fps = 24;6 s# G% P% Z* S0 ~/ |
- da(g);//绘制底图
9 P8 e8 m/ _) E z- d. J) j - t.upload();
7 t; L& m% k+ h& I - let k = 0;$ ` V8 t5 K, Z, U8 n) d+ D
- let ti = Date.now();
2 t# W" H5 n( B. k9 g* w - let rt = 0;
% B0 x% F: W& I0 J J - smooth = (k, v) => {// 平滑变化. z8 B5 l) D; T' w6 d$ w# m
- if (v > k) return k;
9 s( ^. a' v7 J; d0 \ L - if (k < 0) return 0;+ n. T7 i; `' J& d5 H0 i
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
- q+ @. P3 d' N) V9 f; ] - }6 L: I4 {+ C0 w5 v [
- run = () => {// 新线程
9 ]1 X/ ^( m' Z1 h1 F( W" Q - let id = Thread.currentThread().getId();
, M4 y* u5 i" k. _+ _1 ]9 s: _1 Y - print("Thread start:" + id);
6 l# [- H% w" b7 N4 m" v - while (state.running) {
) O5 V9 X, g# |/ P; S" P, o1 U/ R$ z - try {9 o3 Q2 L& K) k0 k |0 K3 A1 Z
- k += (Date.now() - ti) / 1000 * 0.2; J! W0 H! g% K
- ti = Date.now();& a9 @! c- H; C& N* i+ h
- if (k > 1.5) {, W4 L, @+ \! i( f- A& Z
- k = 0;
) a( |4 |. r; i. k - }
* U+ ]4 J" |5 u1 I+ K4 k) z* z - setComp(g, 1);
9 N i) I8 k3 K4 U; h/ v! A3 d4 q - da(g);$ j1 m: ]: ?' g
- let kk = smooth(1, k);//平滑切换透明度9 E& C. C+ _8 z
- setComp(g, kk);! z0 D1 \7 J* D7 p! {$ s
- db(g);, ]5 e- f; a, M4 j A+ H5 i3 S9 Q6 k
- t.upload();
2 j Y1 m) o. _' } - ctx.setDebugInfo("rt" ,Date.now() - ti);
8 s5 f/ P9 T1 O3 h - ctx.setDebugInfo("k", k);5 Z5 e- E3 P4 I, j+ \0 y
- ctx.setDebugInfo("sm", kk);- N9 k ^) Q! N6 w& E" X
- rt = Date.now() - ti;2 I( T( U* V3 D# j8 h- A* N
- Thread.sleep(ck(rt - 1000 / fps));
$ m0 [/ j) t6 Q5 V$ i9 Q - ctx.setDebugInfo("error", 0)
p4 z7 v& u4 A: E4 @; W9 k0 W - } catch (e) {
" o; U6 t: v/ I# P- w$ v' P - ctx.setDebugInfo("error", e);
( X) U7 _ r" {! C& |1 x( Z - }
9 X3 `$ D- I) J# m9 {3 o- K - }
7 t6 n- `1 N, z- B& s3 I7 X - print("Thread end:" + id);# R1 |3 J) l- j4 E8 J) L e2 B% m
- }* y) `9 D7 u/ A( \( |
- let th = new Thread(run, "qiehuan");& Q9 E; A* J/ x! c. U% E
- th.start();2 @$ }1 y- N1 [# Z4 |
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7 o; a. }% O7 F( b- function render(ctx, state, entity) {% ?/ R3 C, F8 R# m3 Y T$ Z
- state.f.tick();" e3 ^* s! b3 z% z4 a1 c$ Q
- }
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- function dispose(ctx, state, entity) {
% ~; V' S6 I" @7 f1 Z- ^: F5 O - print("Dispose");/ r3 M1 j' V* P% B% g' f3 ?5 h
- state.running = false;
5 |+ C( Z0 Z# L& N* l - state.f.close();
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' }3 q! ^1 t7 T& r- function setComp(g, value) {
3 B \+ R& y+ l( ] - g.setComposite(AlphaComposite.SrcOver.derive(value));
! v: W( V; h) j, v0 A2 [ - }
复制代码 & C- `( _" V0 N
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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+ O( f% Q0 q4 U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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