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3 z3 s+ r9 A. E4 l* s! w5 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。0 L- _ m3 b- Q9 N1 j, o
- importPackage (java.lang);
) p8 S0 t8 k2 e0 d& l4 i. C5 E* A - importPackage (java.awt);, O) k/ V/ Z0 }( W3 L! }
- @; x2 K8 j3 |9 B( T' w/ r6 U
- include(Resources.id("mtrsteamloco:library/code/face.js"));
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0 ~1 u/ G* U7 K* A- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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; u+ {5 d# ^3 a4 L( x- function getW(str, font) {( T2 v. r( b3 H
- let frc = Resources.getFontRenderContext();
1 e0 A; H( y" l7 c - bounds = font.getStringBounds(str, frc);+ v, q, O7 {1 w3 x" J0 y3 X
- return Math.ceil(bounds.getWidth());* U0 }% ~1 o' t/ W
- }, Q9 L2 C( B1 r2 p V H# h
4 H4 U# e% E( `" u% y4 e7 X- da = (g) => {//底图绘制
9 `' F1 h1 f% P* {9 T1 c1 F3 L - g.setColor(Color.BLACK);! K# m7 ?) d) K+ l1 I# M+ J1 e% I
- g.fillRect(0, 0, 400, 400);/ n/ E/ O% E, ^ w! a. \0 q0 g: y
- }
* c9 v# A7 K! J$ _9 h! ~ Q% ]
/ s9 P; h1 q/ Q- db = (g) => {//上层绘制
3 O. l q# \- D; z' Y - g.setColor(Color.WHITE);* o: F4 A/ V1 g9 h x. C
- g.fillRect(0, 0, 400, 400);
& r' w! g! p; E: y, j, g4 s; ~. T7 E - g.setColor(Color.RED);
0 J# I) y9 h: {) ]* `# H0 P - g.setFont(font0);
0 z$ B, N x* U$ L - let str = "晴纱是男娘";" w! r6 [& z# e$ K9 _
- let ww = 400;
; H6 ^+ u0 N2 P7 F( R - let w = getW(str, font0);; g! f& ^9 I$ S& H+ H$ |. h
- g.drawString(str, ww / 2 - w / 2, 200);
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- 7 @" U6 U7 V2 J4 `$ K1 W+ j
- const mat = new Matrices();
9 A; V8 v) [/ i4 B% Y8 Q/ y - mat.translate(0, 0.5, 0);
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- function create(ctx, state, entity) {+ a: y1 t3 i' Q5 y2 G
- let info = {: K( L% u6 y" ?) x
- ctx: ctx,: P: Y8 b: ?. y1 p9 e
- isTrain: false,
6 }# G* n# P4 G - matrices: [mat],/ R6 S+ |6 L& W; @) ]; q
- texture: [400, 400],
1 S! A9 V+ |, }$ j - model: {3 q j3 d8 u2 H2 H
- renderType: "light",4 V( D6 k( A% d/ ^1 y7 w
- size: [1, 1],
2 l8 r. y" _4 m3 A& @9 g) u; d - uvSize: [1, 1]' x7 k. h- `! Q5 ~: P; X, G" u5 P( }
- }: |9 m5 g; S% N% L* S8 {; ^* B
- }
+ V: K/ k$ W, H2 P6 J8 n - let f = new Face(info);" l& X2 k9 o0 ~, q0 Y5 O! @
- state.f = f;6 G, ]6 ]# J9 H$ ^5 [
- 8 T' M7 a0 k8 k# }7 {
- let t = f.texture;
n% z v% q) o, x2 N - let g = t.graphics;( n9 s9 S; y9 e' d
- state.running = true;& B- U, e% b# ^2 ?) w: l* d. B5 h) }
- let fps = 24;8 ~" O0 v% i3 r& Y6 Q/ B) {+ P6 p
- da(g);//绘制底图
4 F# L7 @$ _/ c% T8 H$ f& Z- ~3 s - t.upload();/ H4 G* O1 C( g5 y9 @) d' {/ i3 v
- let k = 0;
O2 V; N) I" o; ^4 v/ ~ - let ti = Date.now();& ? C6 l9 O( i1 s3 B8 P
- let rt = 0;* [% @6 M) ]) K5 F5 r6 a
- smooth = (k, v) => {// 平滑变化
- y7 y8 w% W. S3 i/ |+ _; ~ - if (v > k) return k;
" r0 o* x0 ?/ L" F0 Z) b3 _7 ? - if (k < 0) return 0;6 m" N; U2 [, }# r: z' B0 G0 g
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;( E( [6 A- l, S- T
- }7 `% w$ Z- q" I" U) H7 I% G
- run = () => {// 新线程
0 f: U/ c$ Z+ q1 X2 V - let id = Thread.currentThread().getId();. o3 O @( t9 s4 G+ O, Y4 M4 i
- print("Thread start:" + id);! F5 S8 J: u4 \8 y* N
- while (state.running) {
- J' X0 H9 ?0 q0 y7 e - try {
2 w/ D; @+ _, Q, v% j2 `% S - k += (Date.now() - ti) / 1000 * 0.2;
U ^' ^3 @+ B7 J/ X# i' B J - ti = Date.now();$ J% E N$ P7 m# F! C$ b9 E! B
- if (k > 1.5) {/ ~. I! j7 M, Y3 c# s
- k = 0;0 {$ q8 j! y% p* T+ F' }* v
- }
- g. V" d7 d' U1 X/ P" Q y1 G+ a - setComp(g, 1);* I% D6 u$ [. t* j3 X
- da(g);
! @$ \; x7 I& v* m - let kk = smooth(1, k);//平滑切换透明度8 v/ C( I6 L3 H+ }, X- X3 w
- setComp(g, kk); W, K& u" j# P% y6 W
- db(g);7 N# ^% M5 B- z' N- `
- t.upload();" k8 A x3 a, t$ [; i
- ctx.setDebugInfo("rt" ,Date.now() - ti);
; h$ m: f& b7 { h - ctx.setDebugInfo("k", k);2 @ |7 m6 d' G3 X
- ctx.setDebugInfo("sm", kk);+ i) T3 K3 S) L) q g
- rt = Date.now() - ti;, m& {( ?" P, Q; y0 D# m
- Thread.sleep(ck(rt - 1000 / fps));- a% a2 h. {9 p5 S2 c" Q
- ctx.setDebugInfo("error", 0)
6 p# q- Z+ H1 Z ~ - } catch (e) {# e: t; N0 j$ y& N( Q* C& m
- ctx.setDebugInfo("error", e);
, i x, e" \& c% ]8 n, r. w - }
6 s. e+ I+ {/ q/ g1 m l# Y - }5 Q* {% V* T- j
- print("Thread end:" + id);$ [8 B2 k% Y: C; a0 E- X
- }
8 M& B4 n' C7 u - let th = new Thread(run, "qiehuan");" s' `) L9 e5 h: Y/ g, w
- th.start();
! \* P6 ~$ g6 d9 J1 G' c0 [$ J5 q - }! Y* g7 H- A6 k9 f" J
- ( \( q3 g( S9 X2 Y/ `8 w) C+ f
- function render(ctx, state, entity) {
9 k& V- M5 ~. d! b - state.f.tick(); n! H; c% I* t' M# s8 L1 I
- }
: t" n' [4 \6 f: L M, t( T: V - & h" j/ B% C: n2 D/ d: K& a' M
- function dispose(ctx, state, entity) {( b7 _( a- U# J; X) ~% s" ^1 e
- print("Dispose");& Q( C% @1 J7 V2 c
- state.running = false;( x" N3 y1 ]$ `9 A0 \$ c* y
- state.f.close();9 p& R z: U) ~4 |$ Y4 U
- }
2 s/ V) I0 Z. W. e6 k
. ~; L, [4 I/ Y& g0 a* r0 }2 J8 t- function setComp(g, value) {) U: ]7 o0 ^ b) l8 w$ y8 y
- g.setComposite(AlphaComposite.SrcOver.derive(value));8 z9 P/ d; p* ^' H( ^& q
- }
复制代码
% |! R- S8 L) |( R+ j$ R写了这么久的js,我便渐渐发觉使用 render 来写更新内容有局限性,比如说会拉高延迟.....等等(但可能也没什么影响?)。在这里我用新建 Thread (线程) 然后在新的 Thread 里来处理图片更新逻辑,实现丝滑切换。) ~; ]6 j/ {3 Y
1 _0 N( \) r1 s. F
7 [: t/ o6 Y7 g$ `, m5 i顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)! N4 D8 | \. x. b$ u
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