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; z, d) o7 d, a7 }! \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。- D2 |# G3 g. h% r- ]/ _0 y) h3 p
- importPackage (java.lang);2 D; ~8 [5 p; z$ W7 W, r3 D
- importPackage (java.awt);6 Z1 x1 v1 ]+ r8 V
- 6 Q* }; ^* n. u3 W; i5 T9 z4 d
- include(Resources.id("mtrsteamloco:library/code/face.js"));0 E# T: n# t( q* x$ E Q
- 4 ~2 E. ^& L/ i0 Z; R2 d6 `! v! e
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
, }( B6 i C c/ f0 X; D2 t* | - : g+ h$ {4 I/ G( E5 }, |2 ^8 O
- function getW(str, font) {! ]4 u; ] t8 x- j+ x
- let frc = Resources.getFontRenderContext();
: [" l3 l" N. r- w0 Q8 y - bounds = font.getStringBounds(str, frc);& m& n& d' k9 p$ j5 m8 {8 x
- return Math.ceil(bounds.getWidth());
3 L& o- Q( G o- I - }
! Q* G1 n' m f/ a2 S - 9 g# O8 H2 ]% i V: s
- da = (g) => {//底图绘制
) `0 \/ o) K6 y - g.setColor(Color.BLACK);& A% I0 n# R' U5 x; s
- g.fillRect(0, 0, 400, 400);
7 @ B$ ~9 \% h a( e# C# Z - }+ s5 L. {1 o* U# o- ?
y, r. j! {7 e* w/ H6 m- db = (g) => {//上层绘制+ \* j& l: c+ W/ y
- g.setColor(Color.WHITE);& _8 X# v6 J! T( _( G$ S
- g.fillRect(0, 0, 400, 400);
) |) S4 { [/ I+ } - g.setColor(Color.RED);( p! H" k6 O+ a* H, |0 ^3 Q( u
- g.setFont(font0);
+ W5 @$ d [- [0 `6 m - let str = "晴纱是男娘";
, `) R) v1 H+ f - let ww = 400;
$ m0 q0 U" Q7 z - let w = getW(str, font0);1 ]7 l% k; j$ j% g+ v( d5 X3 A
- g.drawString(str, ww / 2 - w / 2, 200);, d0 |; P+ ^/ X5 V/ m) v6 q* K
- }
1 ]& v7 ]+ y, b1 h
4 F5 { q" p; b- const mat = new Matrices();3 u5 s* i- ?) x
- mat.translate(0, 0.5, 0);
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' ]% s6 z } z. B- ?- function create(ctx, state, entity) {
O. r7 n6 v) _3 D6 M( F8 F - let info = {# x5 a2 E8 ]& G4 G1 n
- ctx: ctx,
0 x6 z2 Q+ E- O" i; d; L) W, n - isTrain: false,
' Z2 W8 e; c9 K& Y' @/ y+ `8 w - matrices: [mat],
6 a3 V3 p' b4 ?9 S3 z; Z+ ? - texture: [400, 400],& C; A2 U# W) `. x, k
- model: {
1 M& r# T& o7 B/ _ - renderType: "light",
4 q. E( |8 b! F1 f' E( v/ r - size: [1, 1],! f5 N. K; a; |+ Q2 N+ b" I
- uvSize: [1, 1]5 G1 a1 R* x' g; A" i* x
- }" Z/ _9 W* ^; ~3 {
- }- } ^& q( y8 s$ p8 ?, {
- let f = new Face(info);& ^3 M- [8 T6 q5 B
- state.f = f;, G3 P, m# B2 `) L( H1 ?2 S
- % I; ?7 J: M0 w7 Y
- let t = f.texture;5 \; E! }# _( u% @. |" Y
- let g = t.graphics;
8 [2 l+ U8 l" z: G4 {- i7 T& X i - state.running = true;
2 d% F5 [/ h4 N( I* [ - let fps = 24;
$ f; G1 ^' {, ]: } - da(g);//绘制底图
. c- m$ O% _8 B, H - t.upload();! V) s4 F5 `: D5 c# n
- let k = 0;
$ n T+ K+ C" r1 n - let ti = Date.now();
4 C# C; i- O; ~8 U- @, ^8 v8 a - let rt = 0;2 J& d; b, j/ u1 Y7 d6 ^
- smooth = (k, v) => {// 平滑变化4 C" i1 R Q: v0 q |& p4 L+ _
- if (v > k) return k;0 ^& o# d7 R& B5 U
- if (k < 0) return 0;$ \4 W% w; e. g9 G7 E; c) ~
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k; W: b. r+ m0 @6 K; R1 c
- }1 F; V5 k5 r3 _( x: n
- run = () => {// 新线程
2 z3 p& r# h2 t: S+ V6 x1 A - let id = Thread.currentThread().getId();
* _! ~5 B: s( Y0 j - print("Thread start:" + id);9 U( \. S; B( d3 A' c
- while (state.running) {# O' W. Q! D! G, J9 O) A, J' G
- try {' \& \ C' j5 P' B7 T
- k += (Date.now() - ti) / 1000 * 0.2;! i9 v7 G0 C2 v6 z6 O1 C
- ti = Date.now();
: @( h" w4 u9 e2 s8 c; r - if (k > 1.5) {
" |. ~+ K3 u+ B' ^5 M* ]2 K# L - k = 0;
1 D. w& i4 T( W6 Z9 z5 j; u) B - }
5 r. O& o1 u+ i. p3 q" k6 }3 d - setComp(g, 1);
, H' t6 p/ L* Q1 B# L - da(g);
" f& O0 d9 z: B - let kk = smooth(1, k);//平滑切换透明度
, I9 h/ C8 P& z - setComp(g, kk);
' N6 |# `/ m, d2 V# Y - db(g);, v. l$ {' ?: g4 n/ V$ [" N9 G
- t.upload();
9 W% v8 J3 F6 m0 U% x8 H0 }% j' I - ctx.setDebugInfo("rt" ,Date.now() - ti);
n( T$ f. s2 z; f, {' I/ h/ }: ^ - ctx.setDebugInfo("k", k);
4 r6 ]0 ^9 q$ e8 ] - ctx.setDebugInfo("sm", kk);. e8 D0 K9 w8 E- y" o7 @: Q( b
- rt = Date.now() - ti;8 B6 J( T4 |) B2 E
- Thread.sleep(ck(rt - 1000 / fps));
$ X" I: Q( ~$ _ - ctx.setDebugInfo("error", 0)( P$ m, F+ l8 c$ E
- } catch (e) {
' N) [! M }% L* R4 F - ctx.setDebugInfo("error", e);0 u; \" F3 f2 T8 ^; M6 g' J$ q
- }
, O7 r* |* b/ J. ~9 l" c1 J/ l - }
8 A5 s: ^( Y' Z8 l( W - print("Thread end:" + id);" R6 w$ ?; L( C/ Y" B% f0 y: m
- }, g- b; G) e0 {8 V
- let th = new Thread(run, "qiehuan");
: n$ U/ U4 k6 m6 Y% D - th.start();& i! w, Y% o( ?& e' ^8 F2 l( R
- }1 E1 G9 O: C. }3 p( c
" b3 u3 i! U& p) m" O7 J- function render(ctx, state, entity) {) b G0 a( T( w" e0 i
- state.f.tick();5 ?( o* e; ~. ^! Q( k( V
- }' s$ \ ^& u- H3 W9 e6 @. [
6 ^: J$ U C& P* ^8 I- function dispose(ctx, state, entity) {- n! s- {4 y% t8 h7 Y
- print("Dispose");0 p- q- W! e. D' ?1 z
- state.running = false;
+ ?- ~6 }* n& s x ?: b - state.f.close(); B9 f$ s! X8 M: E+ k
- }( j9 L8 G9 i8 e0 i! h5 S
- 7 {. ^7 L% q- ~8 o! N' N5 R
- function setComp(g, value) {; w3 _% j1 H$ Y/ p7 @
- g.setComposite(AlphaComposite.SrcOver.derive(value));
1 \" U& }' s6 L A2 `9 }% x" A - }
复制代码
2 d% l1 L5 o3 s1 d3 d( V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。: R% `* n* v* V" _- L3 k
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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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