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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。8 N) @6 J3 |% K- I) K) L
- importPackage (java.lang);
3 f! O' Z7 h$ _3 V/ k - importPackage (java.awt);
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+ Q2 F; V% ]5 H6 `3 ~5 C- include(Resources.id("mtrsteamloco:library/code/face.js"));
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* J( a* Z1 [) a; O' K, `0 k; f% a7 d, b- l- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);5 j, Q7 I9 s; s1 v1 }( {
+ l0 Z) p$ q9 y8 _3 q3 n- function getW(str, font) {' D$ o9 Z5 h! s/ ]0 ^
- let frc = Resources.getFontRenderContext();
; U; h* P* V3 N* \; B - bounds = font.getStringBounds(str, frc);, z# y# E7 b% h7 T
- return Math.ceil(bounds.getWidth());: N2 M: U0 W, C
- }6 o* w! A4 p' E
) {( r7 W6 x! ]7 k2 n/ F" F0 }- da = (g) => {//底图绘制6 @2 J5 p ]/ B/ N- ~4 V3 l
- g.setColor(Color.BLACK);7 O0 Y& N; V. n" Z
- g.fillRect(0, 0, 400, 400);
% H$ c) l0 s9 c+ M! k2 a - }
" e" J& V2 ?8 \ - - E" y- X A; W5 ]
- db = (g) => {//上层绘制; ], Y9 v- r" N! g
- g.setColor(Color.WHITE);
- k5 |, R) T7 i; g6 j1 s - g.fillRect(0, 0, 400, 400);
) j/ {1 ?0 z1 J$ W4 C - g.setColor(Color.RED);& z# z) F o2 `) f, z. {; D) g& S
- g.setFont(font0);6 m4 [8 c% _9 Q. m0 r3 u
- let str = "晴纱是男娘";
2 t$ T1 l" e) y4 A/ H. ~! i - let ww = 400;
# G0 o6 X8 n( E$ h- N - let w = getW(str, font0);
( W$ z+ D! [6 Y+ `/ U - g.drawString(str, ww / 2 - w / 2, 200);
% H$ @' Z5 i& v, r. x( W: v - }
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) \7 z4 V& W2 V% ^ E+ ?" F- const mat = new Matrices();. s: P' {: o7 o8 @! s
- mat.translate(0, 0.5, 0);
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- function create(ctx, state, entity) {$ e$ |' }/ {6 C H# y
- let info = {3 d: J( g5 u; j% S
- ctx: ctx,$ ~6 \0 y$ |, t6 |/ y- Z" [
- isTrain: false,0 u& y, O6 ]: `, S2 X2 s% A4 O/ m
- matrices: [mat],
; Z( b: m) K' z: ~( D - texture: [400, 400],
8 W+ S' ^( S* D - model: {2 Z5 `+ X+ u6 {) H' v7 D! o s# M
- renderType: "light",
$ j' U2 p+ x% o) v- [% h e3 } - size: [1, 1],6 }# @- I% P. f3 w& D" \9 K
- uvSize: [1, 1]3 ?8 W# h& F: T& t% ]/ s
- }
/ I; h" @+ G: l) A9 W - }
# ~. f2 \* p( K" U- @ - let f = new Face(info);
0 X& N9 H) F7 q% O |. o - state.f = f;1 @+ B1 o3 X2 l5 S3 d
2 r' B/ y1 g" V0 ]8 C- let t = f.texture;
' h3 V* k) f( ~' j7 k. @( g - let g = t.graphics;* I8 P* z2 `+ ]5 n+ f- A
- state.running = true; M" v. M9 M5 l& ^& T. c1 U. o3 H
- let fps = 24;. d9 m/ C1 D# ^2 k$ B! G
- da(g);//绘制底图% v4 y, {# |7 O0 M
- t.upload();
4 k; | J/ E4 f. a8 P7 o' K - let k = 0;2 b* U( x& }; f& w
- let ti = Date.now();
$ p8 \+ h2 F! H7 f - let rt = 0;
1 p' _- m$ c5 y$ s7 L" [% ] - smooth = (k, v) => {// 平滑变化
; d* H8 a* `9 @3 J - if (v > k) return k;, o0 t) W/ P0 W% k& f0 N
- if (k < 0) return 0;
& \( o4 q: q' u' ^ I, x5 R - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;% R9 v1 S5 Z3 X+ i; d. q7 X
- }) D( P, v0 ~ a+ K, @
- run = () => {// 新线程! K& ^0 C) \, U- \5 N; N
- let id = Thread.currentThread().getId();# h# Q) ?$ o( V( Q }' i. ^
- print("Thread start:" + id);! P Z- E2 f- c; ~; k g8 a
- while (state.running) {2 f) v$ S# F$ ]8 e) U
- try {* q* I1 Q6 u$ L& G k
- k += (Date.now() - ti) / 1000 * 0.2;
5 h8 _5 ` b+ L. Y8 p2 C - ti = Date.now();
4 u' H0 ?% H) f& h0 Y$ O - if (k > 1.5) {4 m% c6 E5 [& z
- k = 0;
8 {6 J. A S0 a$ m7 B3 O - }
* A' Y9 {# |& P1 Z/ {5 @ b) p - setComp(g, 1);
* ?) A7 D! \. x# @$ C! S+ U - da(g);
* U; u/ G% o1 S( @ - let kk = smooth(1, k);//平滑切换透明度" I" S% G; u. i5 G; z
- setComp(g, kk);
: z+ b0 z9 T; Y \( Z) Q( { - db(g);
6 H- C6 w% p* i0 Q7 O - t.upload();
3 A, x" G; C: z$ y& O - ctx.setDebugInfo("rt" ,Date.now() - ti);7 _! v$ \# o% m4 ?- ~2 G1 G
- ctx.setDebugInfo("k", k);/ G0 {+ g$ K4 I+ h: y
- ctx.setDebugInfo("sm", kk);
( D/ C* T% d, r( c; L/ m, k" X - rt = Date.now() - ti;
5 D$ |& @+ ]4 D4 v) g - Thread.sleep(ck(rt - 1000 / fps));: b& @/ S' t9 e: @
- ctx.setDebugInfo("error", 0)
# Z, F0 \* K0 y& I4 T - } catch (e) {
" a6 b# [! a; s; W0 H9 s - ctx.setDebugInfo("error", e);
+ j8 X3 E* W# @6 H# K - }
7 g9 I5 I( w3 c: }" j! s - }
( [) G! [& X! B# @- y0 {# M! X - print("Thread end:" + id);3 |9 |, Z& f4 h( G* {0 b+ S
- }
9 |! ]) P! U& P - let th = new Thread(run, "qiehuan");1 y3 t- l- R* t4 l
- th.start();/ G. ]5 F( s" Q8 s( _
- }8 J. x7 r |; X
( b# }) `/ d) x( K6 \- u- function render(ctx, state, entity) {
) A% H5 m& D/ y0 E) Y - state.f.tick();
+ `' M# Z% S/ O* S0 y - }: o2 R8 p* ?& b4 w
- " F+ |4 g' T( Z1 _
- function dispose(ctx, state, entity) {$ Q$ N8 D3 r9 l& y
- print("Dispose");" T! `7 b0 |8 G
- state.running = false;5 A; g# _. U2 i7 E
- state.f.close();
8 Y' w& i; @* S& F - }
+ \& G) N# O9 {' t- B5 g) n
. H. w8 Y# K; b# B2 q0 o- function setComp(g, value) {
- s- k1 ^4 `% v( r! e - g.setComposite(AlphaComposite.SrcOver.derive(value));! X% X& D; W1 z' h2 d
- }
复制代码
9 m: e/ K6 p! ?& u. ^; F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。 y+ G) m. U* `+ N" A V5 C
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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); p) [' O: Y- D4 ~5 C3 x" Q
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