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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。4 h+ l% L7 F) T2 E: [5 W( |
- importPackage (java.lang);
( c- A7 E( b: p* S - importPackage (java.awt);$ H% n+ h% X! ^7 O9 C
& X; K; g9 p5 y& U- include(Resources.id("mtrsteamloco:library/code/face.js"));
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5 d" o+ h0 Q) d- P. p* ?- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
& V6 L& Z* `2 F9 d5 Z
$ Q1 M0 d- K# T6 x9 f- function getW(str, font) {* W& L0 j( [( d
- let frc = Resources.getFontRenderContext();; D9 m5 T: H2 k; c
- bounds = font.getStringBounds(str, frc);
+ z3 B9 ?; g" C) G* }8 g8 u3 ^ - return Math.ceil(bounds.getWidth());
. ~1 O. _' d) Q, \1 N - }% q4 Z8 s# K6 w+ \
* j5 V- b8 [ x2 k3 h- da = (g) => {//底图绘制9 }* u& d! R& ?9 K& H c
- g.setColor(Color.BLACK);
6 F2 \( i- T; X3 z1 O) e) ? - g.fillRect(0, 0, 400, 400);: T& k6 b7 n r
- }+ u! K8 \1 q2 H9 n, i
- 3 V) ~: ^1 M1 U/ Q3 e' d3 R
- db = (g) => {//上层绘制2 e4 w, b/ U3 Y
- g.setColor(Color.WHITE);
9 C% C6 K! D' z# _6 K" ^ - g.fillRect(0, 0, 400, 400);' f- W1 K# ? f/ ]
- g.setColor(Color.RED);
% f; Y" P2 z! s' S7 h& h - g.setFont(font0);
7 _* g2 q* g* e+ C* I - let str = "晴纱是男娘";: Z8 S( a/ i. Q# O, R! n0 J% B
- let ww = 400;$ w9 H! z" G& D; A; u- Y; n
- let w = getW(str, font0);
% k' X I, h4 B% \! W, R5 j - g.drawString(str, ww / 2 - w / 2, 200);+ T/ `- a+ Z( M! l& N
- }5 S3 X- A5 K3 y; }* D2 }$ x4 z; a
& ?+ i( V9 F# ~: G2 |/ A O, Y- const mat = new Matrices();
7 N: _/ Y" T) o( K - mat.translate(0, 0.5, 0);; u8 T# _1 g5 U! N I
_+ v( W- z8 Q0 N+ D- function create(ctx, state, entity) {! V6 e) Q+ a; s+ i% @& \
- let info = {6 B- i+ z3 d/ X% N$ R
- ctx: ctx,
3 B5 M( F2 S4 s2 w; C; G' [, u7 a - isTrain: false,
* h: b, a/ R3 L# V$ |$ V3 | - matrices: [mat],# Q4 e- b. j7 x( Y
- texture: [400, 400],
& H' g: v( a9 X# I - model: {" B: Y2 T, t3 a
- renderType: "light",) X/ W1 w' O0 L& Y7 ~# m% n
- size: [1, 1],
+ p5 P b; M0 n8 M' x3 a* _. { - uvSize: [1, 1]
' p- i% O7 i3 L' k! t - }
- C6 d Z' \7 V - }% `$ W/ g. f% b9 G
- let f = new Face(info);
! F3 n) c8 a! c% M7 ~ - state.f = f;& {& N3 R/ |2 x A
- * o% ~# O a* |6 S0 H0 L
- let t = f.texture;9 n' Z& ?6 T( h# p9 V. \
- let g = t.graphics;
+ \; i) A7 W# R$ i* T, { - state.running = true;1 b# ?) m4 J6 {0 T( W
- let fps = 24;
+ }/ h* p/ z7 G0 C - da(g);//绘制底图
5 ?9 Y1 t4 H* A' w - t.upload();
( d3 m- f# Y Y1 |( T- ?/ O - let k = 0;6 x1 b% n }( y9 c2 e
- let ti = Date.now();( H! l: Q: e5 b* [- F% a. y
- let rt = 0;( l0 Y; B$ b( D; T% k
- smooth = (k, v) => {// 平滑变化# M! s v$ }7 t. _* n' b% t
- if (v > k) return k;" m) l/ k8 v$ }8 E
- if (k < 0) return 0;( k+ w% s. Q1 ?0 ]9 m
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;$ C) w% \: y x9 |5 N1 u
- }
/ Q, v% G6 `! X) J - run = () => {// 新线程: Q8 t \* s a2 e# L9 H
- let id = Thread.currentThread().getId();
% q0 k' E; L3 |, U - print("Thread start:" + id);/ n5 G5 X/ y, R
- while (state.running) {
5 B) t: O; B. ~+ L6 W8 {5 X - try {3 O! n" [( D9 b$ s/ e8 B" F
- k += (Date.now() - ti) / 1000 * 0.2;
8 u& ?5 j7 P8 g3 y3 ] - ti = Date.now();4 o8 S- e! J% T5 R$ p! @+ @
- if (k > 1.5) {5 U$ V8 d. K* V+ u: }
- k = 0;' z& l# z5 R$ ^/ D+ ~) _5 R
- }& z" ?6 [) d1 U( Z6 B/ O
- setComp(g, 1);
3 @- O3 x0 z/ k2 r0 T - da(g);
" {. H0 V$ E, I9 { - let kk = smooth(1, k);//平滑切换透明度: |; C' B" g9 e0 a, C' f
- setComp(g, kk); [. r: {' U& h' l
- db(g);+ G9 k, {/ X/ B; Y
- t.upload();5 G8 w _! B$ J" z: t" w- y
- ctx.setDebugInfo("rt" ,Date.now() - ti);5 P/ Z* F8 B, n
- ctx.setDebugInfo("k", k);$ t7 z, K8 t& f; I
- ctx.setDebugInfo("sm", kk);
+ x. c( f+ \! G2 O8 R$ f - rt = Date.now() - ti;
7 R9 [3 l) J1 i/ Z+ ^, W2 Z6 n( { - Thread.sleep(ck(rt - 1000 / fps));
8 ^! m/ M, [* n3 P9 K7 e - ctx.setDebugInfo("error", 0)! J+ J6 z. W" u# m) U% G
- } catch (e) {
* ~+ A3 E a3 `/ h3 S - ctx.setDebugInfo("error", e);
- A8 z2 Y$ j. p# U4 N/ b) B - }
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- print("Thread end:" + id);
: ?9 m# v8 v& A' ^" G - }
6 E, K; E3 y% l: p8 y2 A - let th = new Thread(run, "qiehuan");
& ]5 e3 h2 n/ F. J - th.start();/ v1 V9 y% `% b0 D" J) k: w
- }; G. j* z+ @* m& {: ^: {: K& r h
- , W# T4 Q. c3 S% P6 Z; d4 t
- function render(ctx, state, entity) {0 P- c, L0 W+ Q% k
- state.f.tick();# y J$ m* a* e: p& P5 x$ z
- }
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; n% i0 s* J$ `. t1 z( M- function dispose(ctx, state, entity) {9 h# s* n- o2 e
- print("Dispose");( g _4 z3 k- V/ c8 @
- state.running = false;1 H o/ K9 s3 V8 i! U
- state.f.close();
, q3 J) ~1 }9 `6 h4 R% a - }
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- function setComp(g, value) {
, v t. s: g! A! {, Q - g.setComposite(AlphaComposite.SrcOver.derive(value));2 e; |# V' q! c2 ~1 O P
- }
复制代码
" C5 B& E5 S V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。 i* s& v& G7 T$ e" p3 P
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1 U' x! o1 E9 [. c3 I- y E# t3 A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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