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0 ?/ S& v: ~9 H( w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。
4 t3 l. R% ~+ D5 v( ` E8 A- importPackage (java.lang);6 G, I% U& Y6 ~
- importPackage (java.awt);
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; A% \; ^, r& U; l. n5 c. z- include(Resources.id("mtrsteamloco:library/code/face.js"));
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- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);) R% _8 p; |5 V( H3 H ?3 O
- : c* e( j: U, L
- function getW(str, font) {4 g3 d. t. G ^9 U) a5 g
- let frc = Resources.getFontRenderContext();
- D# R3 t8 x/ s' A4 | - bounds = font.getStringBounds(str, frc);7 P0 `; _# x% n3 Q6 z* |
- return Math.ceil(bounds.getWidth());% \$ y/ d, l# y
- }" a" x' ?' |) k/ z( ]9 D: ]0 H
- " Z0 b# U- g% N0 f. T
- da = (g) => {//底图绘制
; U2 U1 P/ G* ~* S; w* n! Y2 E - g.setColor(Color.BLACK);
" @& j4 w$ B7 R% a1 @' ? - g.fillRect(0, 0, 400, 400); }! U, T0 z! S! O7 w9 t5 U
- }
9 c1 z) }4 D% f1 ^2 ^2 Z7 `9 H! D
% n5 T% I9 b0 A" O- db = (g) => {//上层绘制
% m- z4 B- p% _7 ~1 v6 X - g.setColor(Color.WHITE);
5 m. Q8 Y" Z# e' t - g.fillRect(0, 0, 400, 400);
% w8 c9 D2 y% j2 j3 T4 V - g.setColor(Color.RED);
- e; ]' [2 ~ w0 r! Y2 V+ B" @; f - g.setFont(font0);
, w. E N7 L( y" I - let str = "晴纱是男娘";
. H+ |( r- I- L6 P - let ww = 400;
9 Q" g; `+ O J+ W; N# G3 @ - let w = getW(str, font0);9 h& G# `" v* m' y( x5 F$ F( M6 L q
- g.drawString(str, ww / 2 - w / 2, 200);
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9 I6 v# c/ h- A: z& H4 J$ ]% D# Q- const mat = new Matrices();
: s2 j; `( h; T3 {9 @0 N2 E0 i - mat.translate(0, 0.5, 0);2 w: o6 N. ^3 D) J1 g
" m2 t# D) H" L% ]. q# n- function create(ctx, state, entity) {
' l- a, @& B! ^( R' k - let info = {
7 Z& u0 a8 W; Q/ o+ T" J - ctx: ctx,
4 c9 q; A; X# p - isTrain: false,* \6 r" c2 g9 \# @* e# o" d( o8 f; m
- matrices: [mat],# V+ b* v9 Y2 v: f% l- r
- texture: [400, 400],$ n. M) f; ]) a2 a
- model: {- l6 G, N! z2 @' x2 T5 x! [6 g
- renderType: "light",2 `6 L* B# l- y y
- size: [1, 1],7 b" O. F- m1 e6 x# \1 D
- uvSize: [1, 1]; r9 E( `) T8 K$ Q& y
- }
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- let f = new Face(info);
! I" J! X( }" n/ L) H - state.f = f;8 p; f3 ~& B3 p: l& Y9 ]9 |' r
- " ~, D- Z, X% N$ O
- let t = f.texture;' O! q% o" j5 Y# Z& V* \, x! H
- let g = t.graphics;0 L7 a7 s' Z: m' r
- state.running = true;& N' y* B$ P1 J' U" o
- let fps = 24;1 { @; M4 p! E s
- da(g);//绘制底图* J+ B z0 Q& C" X( U5 @' s3 l
- t.upload();/ ^- J. E" u; |7 k* y+ v! l; |
- let k = 0;6 W% V+ V/ u3 F r, R9 I
- let ti = Date.now();+ y; _$ q- G% ]. U
- let rt = 0;4 Z5 K3 v! O3 N( ?8 ~
- smooth = (k, v) => {// 平滑变化 y- m4 z( N5 W& X0 F! w( c
- if (v > k) return k;/ G; ^5 i$ R* J$ F% @" C
- if (k < 0) return 0;9 r4 P: }/ y3 H( |* _9 C
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;( F7 N/ K6 m) O. j
- }) E4 S& l! b3 V) D1 W" Y; o
- run = () => {// 新线程
' I3 m( H! v1 y) C# y) f - let id = Thread.currentThread().getId();0 |$ z2 B0 _8 i) m
- print("Thread start:" + id);4 q: a1 M E0 J. \9 E( z, r
- while (state.running) {
9 ^% E0 {2 c5 l+ ^% `! ~% C - try {
% l- `7 @; l4 \- [) t! q7 M: B" e+ M - k += (Date.now() - ti) / 1000 * 0.2;
. P# o. c/ _! Z6 t+ j - ti = Date.now();: U; a- I# Y; p% y7 T2 d1 O
- if (k > 1.5) {+ o; u' x0 v) M0 z
- k = 0;# e6 g% q" _; H% O; { X% ]
- }
* _6 \9 C2 a) L, G% D$ \% n( t. I - setComp(g, 1);* b& }. r+ L) a+ u
- da(g);. T5 Z5 ^) O4 p" o# o5 I7 X6 B
- let kk = smooth(1, k);//平滑切换透明度2 g. z4 t2 W. j+ ^8 G# D
- setComp(g, kk);
4 D. ]9 R* N5 h' `+ m2 U6 B - db(g);
& X& ?4 e- B* O1 Y3 {$ z1 V' J. Q2 S& J - t.upload();
3 `+ \$ q$ Z: V# V- t; z - ctx.setDebugInfo("rt" ,Date.now() - ti);1 |% x. x9 |7 n) O9 F# C" Q# v" `
- ctx.setDebugInfo("k", k);1 F; ]. \2 l' @* [) F
- ctx.setDebugInfo("sm", kk);
) f: A1 y9 s4 \4 H$ m - rt = Date.now() - ti;# f* t8 U5 X- {3 T. o7 V
- Thread.sleep(ck(rt - 1000 / fps));' J1 w6 _8 T! x& }5 Z; x2 O
- ctx.setDebugInfo("error", 0)$ @0 }; n- `2 g! C; ~# v
- } catch (e) {
$ f2 K: v W, a5 L% B3 l- Y - ctx.setDebugInfo("error", e);
6 V4 K, \' Y0 O9 ] - }
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- print("Thread end:" + id);
- ~+ d% v' E8 T+ \" I - }* G* w1 z" I- @; k8 M$ n$ `5 p
- let th = new Thread(run, "qiehuan");
: E1 [- ?% K2 A& o - th.start();
a4 a# n, Q- Z! R - }
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- function render(ctx, state, entity) {
$ P5 `+ i) M) h+ E& L - state.f.tick();* e e$ h- e$ f# T! ~5 ?
- }
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- function dispose(ctx, state, entity) {
$ R$ u- T7 u: m - print("Dispose");& p Z, r9 u; G6 f: I% z3 L
- state.running = false;5 o; J# ]( w: `( {* `: J2 M
- state.f.close();/ o9 v0 ] a: K. o
- }# }5 z4 W9 s) S0 x# N5 R
7 X) e5 O* _( F1 D- function setComp(g, value) {
3 i7 ~ N% }" E* u3 T' c - g.setComposite(AlphaComposite.SrcOver.derive(value));2 p0 C9 ~/ [( ^- M+ l
- }
复制代码
3 e, a2 _4 h3 ?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。3 ~; q. k, ~2 |! x
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3 b" }* t4 N+ k$ m顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下). R0 A6 p; B9 E. E" F6 P
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