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/ x2 d& v0 r6 C) Y! ~7 L' v6 u8 ~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。3 _" ^7 A- Y6 L
- importPackage (java.lang);
( M. Y3 d9 n7 ]6 V - importPackage (java.awt);
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- include(Resources.id("mtrsteamloco:library/code/face.js"));4 t" y4 \0 @2 o" c( N+ `8 ]
! @1 f7 K, o X# [ P* I; T0 c: ?0 y) H- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
4 g, ]+ F: r" Q6 j2 |8 f5 v5 u, \
( m; L$ s. \5 x& i% `1 q7 J; V- function getW(str, font) {
) @: \7 Q7 _7 F7 I; `! \7 Y - let frc = Resources.getFontRenderContext();
& C: L4 _% L8 A. C& ?: N - bounds = font.getStringBounds(str, frc);4 ~- R! }# L ^# \
- return Math.ceil(bounds.getWidth());2 A% ^0 ]* | V. X/ n. @
- }
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- da = (g) => {//底图绘制
/ f- ~2 o5 H# `( `6 ^* X6 P - g.setColor(Color.BLACK);
/ f4 y; i# X6 l/ _$ |8 t0 N8 P( f - g.fillRect(0, 0, 400, 400);
4 i. [" y- }$ i% b7 w! i' Z - }
( G4 w) M% {* ?0 ^
, z1 g; U+ E, L3 Y+ @- db = (g) => {//上层绘制- D* Y& o1 ?% P
- g.setColor(Color.WHITE);: ^9 f) n" c- H, S
- g.fillRect(0, 0, 400, 400);
/ I- D8 u" y' t1 q - g.setColor(Color.RED);4 |( N0 ~: f& z: c( Z, F# w$ }
- g.setFont(font0);9 `; P7 a5 k) F i
- let str = "晴纱是男娘";
: ~ u) ~( h+ U4 C - let ww = 400;# A: s5 s" ?' i8 t2 o n
- let w = getW(str, font0);' b0 g2 Z% s" M/ V( E0 V; a# N- e: I
- g.drawString(str, ww / 2 - w / 2, 200);
9 h! D# a- Z. h) O! o - }
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0 q! T) `" Y% O) g( V; l- const mat = new Matrices();
5 [5 r" C' Y) V) d/ P - mat.translate(0, 0.5, 0);& t" ]5 ]1 A. C# R( c
- 0 \8 k. H4 @" ]$ `! `' V
- function create(ctx, state, entity) {9 l0 r. s$ O: M" k7 Z, C6 X
- let info = {% S( R4 N0 |) w% t, V# ]
- ctx: ctx,1 }* X. F3 p3 D/ x5 ^" w# l) J, m
- isTrain: false,
' g ~6 Z/ p9 s5 _+ }; ^8 O0 @* T - matrices: [mat],3 F5 I4 a0 [( ^& O( @5 O+ H
- texture: [400, 400],7 x& w' g* s+ E1 w# o
- model: {
9 B% s6 @7 A. a - renderType: "light",) H7 _+ O+ c) y8 x! O/ I
- size: [1, 1],
6 c8 O: q+ m: a2 [ - uvSize: [1, 1]" t7 f7 C& i6 ]( S0 L, d
- }
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- let f = new Face(info);
5 ~, W# s" ]- A/ p - state.f = f;
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- let t = f.texture;
6 W% P. ?* z* S4 X3 | - let g = t.graphics;/ r5 {: V3 E: h% t Z( w# w, V% q3 E
- state.running = true;
6 J5 B5 o7 e0 c( q - let fps = 24;
! ^) S/ p) \6 V# t# P9 y - da(g);//绘制底图
2 Q: [$ o- k/ @% s" {2 k - t.upload();
$ v6 a8 `5 @8 v2 f+ d8 ? - let k = 0;# u A: W6 Q. e8 H {
- let ti = Date.now();7 ~9 @: W( d/ [1 p: Q
- let rt = 0;
5 \* e( I% k4 f% F8 { - smooth = (k, v) => {// 平滑变化
$ J" p; [! M6 x+ O! @. s" x1 l - if (v > k) return k;
5 t9 f- z2 |: g. Q' h - if (k < 0) return 0;
" d- v }3 `% K - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;- p2 P! I" p, H1 o: k0 c9 ^
- }* O: b6 p/ }: V& e, K. g
- run = () => {// 新线程
/ P2 ]" N; l$ V" N - let id = Thread.currentThread().getId();1 B [5 g7 X# u" Y3 f
- print("Thread start:" + id);+ {2 [4 i% w( o0 C7 ^
- while (state.running) {# t d$ t. M! i! o, Z) u* _% `
- try {* S0 F- I5 f) E
- k += (Date.now() - ti) / 1000 * 0.2;
" x9 I3 b- l' X! Y# T' R( f& {. [- n - ti = Date.now();
1 V b/ l. w2 y6 T - if (k > 1.5) {
\4 t. x. M4 C! O* v! ]: X - k = 0;1 G% K" P% L! o1 Y% I# I# s
- }9 c. s4 p% m$ Y2 l: V
- setComp(g, 1);
) ^. }1 M" F- v4 @; N - da(g);
1 j0 H& ]+ W( E! q$ j Z* w - let kk = smooth(1, k);//平滑切换透明度
U3 T" _ L, V. W, B5 t - setComp(g, kk);* U3 J8 W$ h" N
- db(g);
- L: D! H& g9 c. i+ y" h {& P - t.upload();
$ g! P+ m V: r1 V' I - ctx.setDebugInfo("rt" ,Date.now() - ti);
4 e* F+ {/ y; E# ^/ l9 x9 v- l& v - ctx.setDebugInfo("k", k);* B( [, x4 S9 |) F5 q2 u, R
- ctx.setDebugInfo("sm", kk);
! v o! b [4 c/ m1 Q - rt = Date.now() - ti;
9 A! t4 M. K' G! f4 ]/ ? - Thread.sleep(ck(rt - 1000 / fps));+ M5 q! E: d" O; D5 W
- ctx.setDebugInfo("error", 0); l8 F9 y% b; }" G2 S' W9 q
- } catch (e) {
$ x/ {/ }# E% ` `: n' v - ctx.setDebugInfo("error", e);
/ c- D' a- K* g* ?: f - }! | @' E; H, F) T# p# d; @, o
- }
A: _0 t$ T; B7 h- ]6 v - print("Thread end:" + id);
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- let th = new Thread(run, "qiehuan");
% }( N2 `4 d( S! n4 w - th.start();
5 x3 h' }$ U# d) |/ L* P# b: L5 J - }6 F0 W" } w7 ~4 v6 @6 |" h4 _0 J
) v @& F2 O" A3 B! x: }- function render(ctx, state, entity) {$ | r2 [5 `3 s2 C" b. A
- state.f.tick();7 }' p: T" P! v; {: X9 c- |# Q
- }
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6 r6 k' X$ M. U, _- function dispose(ctx, state, entity) {' V& s9 y0 K! |* ^; A1 h* `, U; }
- print("Dispose");$ L" _5 t' N' t* O* A4 h! q, [' Z
- state.running = false;, L$ ~! E+ C2 |9 ^, V7 p
- state.f.close();
* X8 I( A9 F/ C) x5 V- a4 B9 F - }
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- function setComp(g, value) {/ Z5 n0 y+ h0 w
- g.setComposite(AlphaComposite.SrcOver.derive(value));
6 W3 u! U& o1 {2 O! t - }
复制代码
: @, Y$ I: a- ^6 W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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