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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。# E: G8 o' i" D4 m) |% i
- importPackage (java.lang);
7 w5 |4 ~0 |2 ^4 V+ J+ {5 p - importPackage (java.awt);4 r+ q# N8 H4 _0 J' q0 W. {9 G9 C) t
- % w% t) q( I- R1 V6 s6 l- V
- include(Resources.id("mtrsteamloco:library/code/face.js"));" r- P$ Z4 r/ q* q+ x- {5 i
- j: ~7 ^* I! ^
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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- function getW(str, font) {9 l, L$ h! z/ l3 O3 r
- let frc = Resources.getFontRenderContext();
+ g% n# @0 T2 c9 N& k& a( i0 [ - bounds = font.getStringBounds(str, frc);
+ }% \6 B6 i" X D% Y3 h - return Math.ceil(bounds.getWidth());( s J- }5 a" V! C% W' s) }
- }
$ P( h& J3 z. Y0 N+ B) U - % ?5 m, A: ]: P8 n* y/ b! Q
- da = (g) => {//底图绘制( `/ @) |9 |6 ~
- g.setColor(Color.BLACK);
' {2 d. \. e; } - g.fillRect(0, 0, 400, 400);
. E1 a6 e, y: h# }- d - }
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1 _, X7 A; W8 ~# a- db = (g) => {//上层绘制: S* y4 u0 [2 [4 M- e
- g.setColor(Color.WHITE);7 H# f3 N, q( @/ Y8 H! A
- g.fillRect(0, 0, 400, 400);2 _* y; n* z( N+ n% x
- g.setColor(Color.RED);/ b/ R" K9 S1 i, g/ E; Z, X
- g.setFont(font0);
( ?& l9 t0 B: L2 O - let str = "晴纱是男娘";8 a- k7 u; F7 I. y9 @
- let ww = 400;
: D! v9 v0 U0 G2 K5 p- Q* ] - let w = getW(str, font0);# P r" H$ L9 h
- g.drawString(str, ww / 2 - w / 2, 200);
0 d: m# D& J4 n7 W: k# k+ d - }5 ]. P0 T: e3 V1 H1 W
% H7 E- R( m8 l) z( f: C' Z6 v- const mat = new Matrices();
6 a: D. `, E) u; b' r* P2 a - mat.translate(0, 0.5, 0);9 E1 }5 n2 {; v2 J
; t* A8 u7 \/ r( m- function create(ctx, state, entity) {/ Q6 k& t/ y, n) ~$ J
- let info = {
4 F3 d9 f b# _, w) X1 Y+ X - ctx: ctx,
/ n" Z4 i; q: D% |8 c - isTrain: false, J) L& S" ~7 i" r
- matrices: [mat],
, A* K# }5 A# ^' p' A) p - texture: [400, 400],3 w3 W/ B% ~3 B5 T) ?2 J
- model: {. w- }5 p) x; [1 X6 P7 e' _
- renderType: "light",
% ] h9 ~, i+ h- D# F& i$ k/ I - size: [1, 1],
- s) H4 Q# N2 f$ J" D2 B9 P - uvSize: [1, 1]
v9 w; t) d% G; ` - }
) x0 p" {9 j4 W- p8 ] - }
' v7 ^# d7 P8 w4 N1 [2 {! B% u - let f = new Face(info);5 ?5 R l2 N; \& b$ i! t
- state.f = f;9 A+ o/ E5 u" t5 ~) A, b
- & ?) i& t- K R& @/ {. ~
- let t = f.texture;3 D% h. ^. D0 Q. i
- let g = t.graphics;
: g7 M9 L/ B: p) [2 P1 b' y - state.running = true;- x: N! b% t k
- let fps = 24;
0 M* h3 k& d7 {5 D - da(g);//绘制底图; o+ i2 g2 L3 i
- t.upload();
7 w X' h j+ Y - let k = 0;7 B! y( A' Y. p( H- T" u1 {& w6 `
- let ti = Date.now();& n% Y+ a/ [4 m+ n! p0 f
- let rt = 0;
, [- z, T4 H `5 Z$ c - smooth = (k, v) => {// 平滑变化/ u6 E, k. l. O
- if (v > k) return k;1 ?/ R% n2 W6 _$ V- E4 Q5 |
- if (k < 0) return 0;
9 A2 h' F+ m" l ]! C - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;& j: B4 @3 Z6 G4 {
- }! ]; I/ y c* E. c3 q
- run = () => {// 新线程8 G1 J4 {& a* q' K/ O! W
- let id = Thread.currentThread().getId();
3 r0 y! O7 Q! } - print("Thread start:" + id);5 H9 y$ e" s6 {
- while (state.running) {
2 j4 n& h0 a+ s! v+ M7 c4 _. A# y - try {
! j$ k5 S+ _7 _' \0 _& v/ @4 C - k += (Date.now() - ti) / 1000 * 0.2;
1 s E; M% _: z! x: u& d% q - ti = Date.now();
: j1 J$ B1 B% I6 R I0 X - if (k > 1.5) {* Q: t p: F) J! ^& Y" q" \
- k = 0;/ s g# h" Y( `5 Z/ Q& z8 \
- }
/ A+ L* D' i/ O3 c. a, F. | - setComp(g, 1);
" B1 V$ o; K: F' w8 ~1 t9 d ? - da(g);; Q5 c% m |5 B* x; V
- let kk = smooth(1, k);//平滑切换透明度, ]7 a0 B2 ~- E$ s$ y* U
- setComp(g, kk);0 ^/ l" t. m9 M# B0 H3 X8 h
- db(g);/ }4 m8 t; b6 w7 O: T7 f
- t.upload();
1 L% A7 ~ G& d' z1 |% }5 \ - ctx.setDebugInfo("rt" ,Date.now() - ti);" a1 ~$ j) U! w9 x0 G; b
- ctx.setDebugInfo("k", k);& u$ }) X! r% @& q% k7 c; i
- ctx.setDebugInfo("sm", kk);" K' [/ d$ D* N7 [
- rt = Date.now() - ti;
8 |$ n% c; q Z% O$ e8 m' Y - Thread.sleep(ck(rt - 1000 / fps));- s8 X. J% c' `% p8 ]0 e5 ~
- ctx.setDebugInfo("error", 0)
$ }% q/ T; @0 z1 ~ - } catch (e) {8 [1 L( V8 k! j0 @, } C
- ctx.setDebugInfo("error", e);
, s f; L! g7 ~" P/ O; L. j - }2 y4 ~, Y0 Z9 x2 f% d3 K' [
- }
2 s1 X% M+ a6 B9 R* t1 v, g - print("Thread end:" + id);5 n) v4 y. p6 w& B8 y
- }
4 `5 J5 p9 c5 m6 \6 @: ^: r - let th = new Thread(run, "qiehuan");( {3 v/ k) m- ]9 c# L
- th.start();7 n6 p, H% k, ^6 [# y) B! `+ j0 {$ ^( v. O
- }4 i+ f( G3 x! C3 l% L- n. a" p$ Q
- 4 I# V4 V" o2 u5 p
- function render(ctx, state, entity) {
4 [4 ?4 Q$ J0 n! r8 h" Z - state.f.tick();2 O* X7 q' I3 ]( r, W. a
- }
3 B4 t" e2 H, B! r, b) Y$ Z: Z0 J - * v9 D# g: v" h ~4 O
- function dispose(ctx, state, entity) {% r y% Z1 C$ g2 J& T
- print("Dispose");
* f" B! C, g0 d4 l4 [ - state.running = false;: p! s1 u3 C, x6 ]4 ]$ T
- state.f.close();
9 W- c) Y4 k$ }3 A - }+ P# b( a8 g& u7 _/ g2 }/ {' b
- 7 {4 D5 R4 \4 P+ H
- function setComp(g, value) {! c% {! b, l4 C* t3 T
- g.setComposite(AlphaComposite.SrcOver.derive(value));
" i' ?; }4 ]! M1 @1 @. B1 w+ o - }
复制代码 / h% F3 w) S/ J4 a- x% |
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。$ t) k7 Y5 k" e$ R! ?7 ]
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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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