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6 `" G, a: k* r/ _; a. C; r& Y6 \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。. h1 i; R2 l+ Y2 g" f
- importPackage (java.lang);
- F! `4 p% b0 q; [- a2 n, N - importPackage (java.awt);
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; c* X+ f) [) R5 S2 ^! P/ r- include(Resources.id("mtrsteamloco:library/code/face.js"));
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- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);2 P9 N6 @( X& j" }3 Z! e) ~
- 9 L( y7 O) U2 C5 g/ w1 y
- function getW(str, font) {
9 X1 R' S2 E j - let frc = Resources.getFontRenderContext();; g- v6 C% G6 M. c% W
- bounds = font.getStringBounds(str, frc);
% D. v8 v# x( w2 Q: A4 }" E* x - return Math.ceil(bounds.getWidth());- t' @9 X4 w0 x5 H6 J& L
- }" J3 |; F% S9 P) v7 h
% K4 N7 N+ x/ H1 H- da = (g) => {//底图绘制0 U' k, y( O9 a% e) |
- g.setColor(Color.BLACK);
/ ?8 _: j( `4 A' j/ G/ ~ - g.fillRect(0, 0, 400, 400);0 C3 z& Q) _$ K7 F9 O" O* H7 y- p
- }
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- db = (g) => {//上层绘制+ ^2 g0 y' n! K' Y1 P
- g.setColor(Color.WHITE);& \/ W' m# n# h2 y0 P
- g.fillRect(0, 0, 400, 400);# r$ j) b, v& @6 S6 r4 I* Y5 \
- g.setColor(Color.RED);* i m) ~- c x$ a
- g.setFont(font0);9 }! V! j, p: o" j
- let str = "晴纱是男娘";3 D! f5 f! r9 A
- let ww = 400;( m$ O N& W; Y; ], T) n* c0 B% D
- let w = getW(str, font0);
# X* S; p5 G9 D - g.drawString(str, ww / 2 - w / 2, 200);6 F2 j8 K9 p. I1 x
- }
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- const mat = new Matrices();
2 I2 I6 ]7 \: w/ \- t" b' u - mat.translate(0, 0.5, 0);: n4 S! R+ p$ Q% M$ u; @, Y# c
* `& G! b3 U; D" E$ M- function create(ctx, state, entity) {0 t; H2 Z+ D8 }" g, d* u
- let info = {5 l7 [/ r/ w" l! V' T, O9 L
- ctx: ctx,& P$ V, G) \" d9 k' |6 h+ q; _
- isTrain: false,7 a8 n" i6 |, r; P
- matrices: [mat],
! X% y, V* u) L3 H: t( n - texture: [400, 400],& k1 M% p$ F4 u
- model: {
/ v- A' A7 C; h& @) Z - renderType: "light",
' _- z- V0 f& q - size: [1, 1],
! \; r' \$ {6 I) ` - uvSize: [1, 1]
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- }4 G. h3 B- C! S' i0 w
- let f = new Face(info);/ E% r; b8 J8 a: l' i
- state.f = f;
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$ Z9 P8 d- }1 [! g6 w1 u$ z- let t = f.texture;
- }4 W+ N# h6 v) Y - let g = t.graphics;* G# `" T3 R# l; W
- state.running = true;4 ^1 M! {$ E0 @1 K' ^
- let fps = 24;
" t" w4 g+ ?2 M' x9 d - da(g);//绘制底图
0 `! C& o) @% V5 M% d - t.upload();7 v) r% d& k6 n) c3 V
- let k = 0;
7 y* B) C2 ]. j4 z! q* ?5 V - let ti = Date.now();$ O& {" C: s" n; Y* F9 _
- let rt = 0;: N1 J7 j5 z, R. k: [
- smooth = (k, v) => {// 平滑变化/ K0 _" J: m2 [6 A$ {- J
- if (v > k) return k;* I! P( c9 R& r! ^: t) l6 n
- if (k < 0) return 0;
# J; p6 c3 ]0 ?- o5 j+ G6 ]4 G# `' U - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;& I. j4 t, ~ o" d' Q; w) O
- }$ @6 j( _1 U p* t, p* T
- run = () => {// 新线程
1 O/ J5 n( }" `4 S* H* F i! Y - let id = Thread.currentThread().getId();, ~+ |" u5 K# ^: \( l
- print("Thread start:" + id);
' U7 e4 _7 {: i - while (state.running) {6 w1 D. B: N; ^* e8 M; z1 T; L
- try {
) M4 P C3 X! k6 p- w# o - k += (Date.now() - ti) / 1000 * 0.2;
9 w( q/ ~- V, U+ J: A - ti = Date.now();
! f9 ^! _( Q6 j$ }6 _ - if (k > 1.5) {
$ M5 V) _. y/ m- L - k = 0;
- L# T3 ]6 B4 j# j$ @ - }
5 ]( V l Q8 } e4 U. K - setComp(g, 1);8 N+ a$ m6 M7 M" s- R
- da(g);
! o: M2 L7 k7 i: Q' f! ?% k) A( M- ? - let kk = smooth(1, k);//平滑切换透明度, R% Q" c$ w& J6 ~1 r
- setComp(g, kk);
( _2 ?$ k( N: Y/ z% U. O- S' |: ~ - db(g);
5 C- j. J8 X4 O9 R$ N - t.upload();
: _/ H/ H* i) i6 w4 n - ctx.setDebugInfo("rt" ,Date.now() - ti);( |: V( o: Y& }/ c
- ctx.setDebugInfo("k", k);2 N5 K2 c/ F2 P8 M8 m
- ctx.setDebugInfo("sm", kk);
. K- l; E* S) b2 l! T, S - rt = Date.now() - ti;
/ \; l w* g8 f* q: T - Thread.sleep(ck(rt - 1000 / fps));
7 e) _4 w! z) }& c1 j4 Z - ctx.setDebugInfo("error", 0)4 r4 ]9 { q2 ^, V( {: k: J5 V# d
- } catch (e) {) B) H- N/ t0 D/ v3 }& h& E
- ctx.setDebugInfo("error", e);
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- print("Thread end:" + id);
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- let th = new Thread(run, "qiehuan");$ ~1 f. s: m- Z, o9 L/ o. t$ P
- th.start();
: }. h O& D& y: p - }
/ u5 o8 \; x3 _' d, X1 h; d
; C) b% k: _$ Y- function render(ctx, state, entity) {
$ P& p( Y& ]$ A/ D - state.f.tick();( `8 W: D ]6 `8 [. n* Q* y% _8 F
- }
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- function dispose(ctx, state, entity) {8 Z) w: {9 r8 t
- print("Dispose");
# v9 f! M: W) C9 q - state.running = false;
! L1 `) a- h4 G2 p4 ?+ A+ v. ]( } - state.f.close();8 A" j$ ^% r9 L2 D
- }
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- function setComp(g, value) {
% D; F- [9 S @# ~ - g.setComposite(AlphaComposite.SrcOver.derive(value));
3 w g5 {5 N* E* z6 ` - }
复制代码
2 T2 q5 a9 O- M1 d& a* G! K. A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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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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