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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。6 v9 {9 D. H" @2 o
- importPackage (java.lang); b1 w! r0 S' s$ H: ~
- importPackage (java.awt);
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" v8 [3 B$ C# j+ @) t( F3 [( b5 E- include(Resources.id("mtrsteamloco:library/code/face.js"));3 d" Y* {7 @: }# A
- & K: i; G ?' D6 \
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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" ^9 G; x; N" n( \& B. B4 v- function getW(str, font) {8 m. i) _, y9 Z# o6 t
- let frc = Resources.getFontRenderContext();- N1 O: t8 } s. X/ }
- bounds = font.getStringBounds(str, frc);
: n$ k* \: l% F: W1 A - return Math.ceil(bounds.getWidth());
j1 G4 N8 s1 `3 h! ^/ E/ n% k1 ] - }
# R# ^" Y7 E k. F1 G7 l. O; z5 Z - $ d' ^- J$ {" J$ }- V" O
- da = (g) => {//底图绘制
+ N6 E6 g! h' V& x% X/ e4 c6 k - g.setColor(Color.BLACK);
* e! X6 C2 v, L - g.fillRect(0, 0, 400, 400);
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- * C3 z5 P# S4 X9 q
- db = (g) => {//上层绘制
) f- L: t0 N2 ` - g.setColor(Color.WHITE);
* `) e4 m3 I& u( S7 r. T3 ? - g.fillRect(0, 0, 400, 400);$ c7 u& Q+ s+ g1 s8 f8 {: @
- g.setColor(Color.RED);
# N R2 S# f# |% Y5 Y- _ - g.setFont(font0);
- n; D8 N# P K& S - let str = "晴纱是男娘";
1 I# Q9 L, o# ?* t' b9 `. L/ V - let ww = 400;
r( s( {. ]* y+ l" k6 g1 K - let w = getW(str, font0);7 N7 S) ?' [5 J2 c+ E# P
- g.drawString(str, ww / 2 - w / 2, 200);5 ?4 z$ x% P) p B+ h1 }+ q
- }
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- const mat = new Matrices();
- L& s: K2 O X - mat.translate(0, 0.5, 0);8 J: c" ?8 K8 }6 t9 T* S/ n0 l
- 1 l% C1 a0 H# b1 l; s$ A. G7 B
- function create(ctx, state, entity) {) E7 M, v# d- [ I2 q2 V4 J! `# T
- let info = {4 f# n% Z; e8 L9 k! g! x7 ~/ Y% S
- ctx: ctx,
3 W r: h8 e( J: ~0 k) F3 c( Y9 P - isTrain: false,
, G8 s, s* d# N - matrices: [mat],
5 z6 b3 R) k6 o, M2 P! C - texture: [400, 400],( F( [( [7 l8 r. d5 ]' x0 ~" X
- model: {
, q# c9 p7 [: f3 U+ x - renderType: "light",) h" x) ?% y' L2 {
- size: [1, 1],
' @3 o# @* R8 A% q' ? - uvSize: [1, 1]" d% v. }% {9 o7 n$ W
- }7 a9 B0 r: Y. r& s+ X$ ^8 j
- }
O+ c3 i/ [$ T$ [ - let f = new Face(info);2 h/ o; k v: u/ i7 f4 H
- state.f = f;2 C. K9 H& v( a
& X, ]! C( D% G7 V: D- let t = f.texture;
1 N+ F, }4 E" P2 [$ ` - let g = t.graphics;
1 Z5 |, J& c o3 W - state.running = true;( G( N6 ^- x( n
- let fps = 24;
6 A* p+ T9 f6 C6 J# G0 |" s - da(g);//绘制底图" ]& G Y- h- b& j3 b; u5 m. V
- t.upload();& c$ V8 @/ R: c
- let k = 0;
; e+ {# q2 q2 v* v; V) D - let ti = Date.now();6 H$ u( w* w4 N. Z2 Z
- let rt = 0;
1 r& C/ s3 ~( E+ h - smooth = (k, v) => {// 平滑变化6 B5 g" ~5 |- G! p; N, f; r" r8 M
- if (v > k) return k;
% J; D. \6 _: J! m& ]# R - if (k < 0) return 0;
9 }8 B2 n0 F7 A' o, g" ~0 Y9 Q4 ] - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;* u* b/ t+ ^) W1 I# `
- }
& U) u3 m/ t* c4 F- H+ l - run = () => {// 新线程, n \* x, |- E3 d9 h2 y& |
- let id = Thread.currentThread().getId();
- x% @1 M# U& I - print("Thread start:" + id);
( p, t" M/ c+ _2 i - while (state.running) {
& h. m2 I. j4 x8 [4 g5 f - try {
" ^8 I5 {, J) U, H- I: W - k += (Date.now() - ti) / 1000 * 0.2;2 q# n$ ?- G3 p. i
- ti = Date.now();4 r/ {* Y5 Q2 r9 S3 D
- if (k > 1.5) {
. }5 m. {* B. p% z - k = 0;
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- setComp(g, 1);
. @5 x! ` P# K. c - da(g);
2 p0 Y1 l' n4 R/ T6 i% W6 b - let kk = smooth(1, k);//平滑切换透明度* {( n, V: n2 ?* Y
- setComp(g, kk);
. S9 {2 ~: s; {/ A, }" I9 h2 r$ Q - db(g);* K- x; S* e" d2 ^% W" }
- t.upload();
8 i! d5 C( `) x+ Z$ Q2 v, i! a: @# { - ctx.setDebugInfo("rt" ,Date.now() - ti);$ Y) B4 l* G0 D
- ctx.setDebugInfo("k", k);
6 J" ? |' m: B* @, F - ctx.setDebugInfo("sm", kk);
" |5 q9 {, N+ r+ @) d6 I* [ - rt = Date.now() - ti;
" c% v+ I* j4 G7 @1 T6 { - Thread.sleep(ck(rt - 1000 / fps));
% u' Q' ~& b2 I |8 O - ctx.setDebugInfo("error", 0)
+ J* M1 p& Z# ^ a c - } catch (e) {7 P( V# W# p6 Q% q
- ctx.setDebugInfo("error", e);
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- }7 c" G `8 h0 }
- print("Thread end:" + id);
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- let th = new Thread(run, "qiehuan");3 r8 O" m1 q) y1 Y
- th.start();
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- ; ~* x9 R$ y2 a7 \' b
- function render(ctx, state, entity) {) G& y0 W6 g. s6 Z/ {* R
- state.f.tick();
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u1 ^" C0 j- D- function dispose(ctx, state, entity) {9 L9 t, ?$ z: R8 `7 \
- print("Dispose");
! P; o8 [2 c" F: M" r$ a' y. h - state.running = false;. U0 X6 x7 D# u) L6 [6 J7 k* S' \
- state.f.close();. l+ z) K- V8 G9 x* v! g
- }
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: O8 Q+ X' G, U: m+ `! a5 w9 r- function setComp(g, value) {! X, C0 S1 ?/ [3 B1 X* x) N
- g.setComposite(AlphaComposite.SrcOver.derive(value));
; U* u* J) J4 I - }
复制代码 4 S8 M9 s% Q' K3 W7 U
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。' d3 Y9 Z# e0 g: ^
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; B* @( l. H) u! [4 T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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