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3 e$ A4 Q& O0 ~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。
! ^/ n4 N j+ p6 s/ H" r- importPackage (java.lang);
# k2 m3 @9 z4 C - importPackage (java.awt);" Q. ~6 N; ^1 R" j3 y1 |7 x: n
/ ?! Z* K; r8 d! H. r! z# F l- include(Resources.id("mtrsteamloco:library/code/face.js"));$ o9 [- X* O/ Q1 X9 U u5 t
- : Y3 x: z* ?: l. l6 @: t! e, C; b
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);* z9 q. J% q& @: Q! Y( T3 _: q
9 J! k2 Z$ ]' F' N. b5 o1 }- function getW(str, font) {: ^6 U3 {# S% T! c
- let frc = Resources.getFontRenderContext();
: x9 M3 ^7 {, l! ]3 j, \7 s4 g& v - bounds = font.getStringBounds(str, frc);
5 J5 e Y9 j3 b6 N - return Math.ceil(bounds.getWidth());
" q( {0 C8 B6 d! b4 O - }3 O* G, }- [6 K5 Z; }
6 B/ V1 l1 H6 H2 A Z- z: l" Q- da = (g) => {//底图绘制9 x/ }6 Q6 o- k: u0 R: {- j) M
- g.setColor(Color.BLACK);+ B/ [* k+ U R, `+ {6 p
- g.fillRect(0, 0, 400, 400);. U _1 H |6 Q% o/ |9 v ]$ b2 P/ b
- }
$ c& t/ k8 w) W3 F h( ?) O
& P, U2 [# e: \& ]4 K, B% O9 B% U7 U9 p- db = (g) => {//上层绘制) {: m! ?, {3 a# m
- g.setColor(Color.WHITE);/ f5 j! D. G6 s* ]( J/ u7 z; r
- g.fillRect(0, 0, 400, 400);- k: z$ V. T+ }+ r r
- g.setColor(Color.RED);/ L0 }& f- ]9 D! l- c! l" }2 ~
- g.setFont(font0);7 ]: n' [# j! j
- let str = "晴纱是男娘";
) C j: j8 g6 [1 J( S - let ww = 400;
- P/ f0 K8 ^3 z0 M1 l: p - let w = getW(str, font0);( O8 r* i0 }7 }* e+ [4 Z" ]7 w2 J7 A
- g.drawString(str, ww / 2 - w / 2, 200);
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) N0 M; K6 P5 h' i& z8 V- const mat = new Matrices();* L) d" l" H) I' G
- mat.translate(0, 0.5, 0);5 [* S6 {6 e; Y! i# m1 K1 o6 K6 N
1 C1 V" y- h1 E* p- function create(ctx, state, entity) {
5 z- {: ~" i% H* t j - let info = {
) x' ]" t6 T0 J3 X( D! D - ctx: ctx,9 E% v1 I5 v" n X
- isTrain: false,& {0 |+ P6 m6 O8 i/ k+ R
- matrices: [mat],
^" w! I! j+ X8 b: ~ - texture: [400, 400],* k5 ]+ V2 o# C$ k
- model: {
- y% }& U4 {7 F4 K3 N$ _ - renderType: "light",
1 M: b& ]: C4 `. k' E - size: [1, 1],7 |: W. A+ _1 Z9 u3 c* ]# k u
- uvSize: [1, 1]9 G# i# J$ J( o C3 k. ~
- }
" M: R7 V1 U0 W# t6 _) s - }
* P- q$ H! N& J: K/ L+ z - let f = new Face(info);+ M! t! C& B: q+ \0 m- s
- state.f = f;; t e+ s5 U1 o2 ?4 T
6 d8 A) k" L' N8 k3 l+ ^9 ?4 `) J- let t = f.texture;
3 ^) H O) t8 x- H8 ~' N - let g = t.graphics;
' m5 g) q3 g8 U' E! } - state.running = true;$ E$ z" Y+ R/ G+ ^
- let fps = 24;9 m; G5 I9 E; q" v3 {* V3 j& }
- da(g);//绘制底图% B* \3 c) O, Z' W6 o3 u$ `
- t.upload();
/ p, V, b$ C7 Z; u L, D - let k = 0;: I9 @2 j- s2 V$ c9 b% t$ S
- let ti = Date.now();! ^7 w7 d) _; @, @" o1 S
- let rt = 0;- o1 V2 E1 F) c, B4 i; x. b
- smooth = (k, v) => {// 平滑变化* e# ~. P( g" u0 y$ ~7 [/ d* Q
- if (v > k) return k;
7 q/ t$ c: H9 @1 c0 Q. T - if (k < 0) return 0;
1 x9 w; Y M, C7 D7 f: Y - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
0 D8 w* z; q; |' G; Z% V# g( g8 Z - }
/ |% V# \ P5 N; I - run = () => {// 新线程
" [3 T. Z3 ]1 r) T - let id = Thread.currentThread().getId();+ w2 l: B* b% T# \: J" g
- print("Thread start:" + id);( e$ ^# T* k( T
- while (state.running) { L0 w# `- E. M* C6 g
- try {
4 F4 O5 e. n a7 I% _7 g - k += (Date.now() - ti) / 1000 * 0.2;
# t' w6 H" m. G - ti = Date.now();
& i% L; }% z9 }' g - if (k > 1.5) {# f( I s; U" S) P
- k = 0;% n+ R) B# d; P6 T) t' i' A/ s6 F
- }+ O, @3 S5 O; y4 p
- setComp(g, 1);' v9 U/ z# V; t$ {
- da(g);
& I6 ?' r$ V2 I8 q( ^2 E+ [ - let kk = smooth(1, k);//平滑切换透明度5 _! U# ~3 f l! f- r1 W) X- f t0 h
- setComp(g, kk);
# F1 p: B1 \. x- J% b) ] - db(g);) T+ f; S6 P: R( {; K. l2 D9 t; {" N3 B
- t.upload();+ P4 `8 {- y1 i- e. i
- ctx.setDebugInfo("rt" ,Date.now() - ti);
4 w- ?/ e. n& j& Y8 R - ctx.setDebugInfo("k", k);( O* B; N7 E6 R% p+ H
- ctx.setDebugInfo("sm", kk);5 T9 T7 m/ e4 d
- rt = Date.now() - ti;* |' e$ W+ o4 V# M
- Thread.sleep(ck(rt - 1000 / fps));
6 Z( N3 \) L+ ?' t& ^( {2 F - ctx.setDebugInfo("error", 0)) z6 J% W; o& i0 {' N! G
- } catch (e) {$ D5 Z- k% i6 Z) ~1 c) h
- ctx.setDebugInfo("error", e);! `& _" L6 w9 O
- } n7 F$ q9 ^. i! }9 i0 }* s
- }7 X G, y7 G; f# d/ A0 N, o- X9 q
- print("Thread end:" + id);
- j. g+ A: `' p - }4 {( M; ?& F* s" l- u
- let th = new Thread(run, "qiehuan");9 I7 {5 M8 u2 u4 Z* Z
- th.start();
# }; |" l' t- i8 h n4 B - }
0 o5 x: u1 e* { - $ b9 j4 c8 ~8 w5 q' D; L. k) j) i
- function render(ctx, state, entity) {
% I( I2 y1 J% {& t; |1 ]; S2 [! M7 {6 c6 R - state.f.tick();
! V' s; A9 g# C# ] - }2 {. k7 C0 M. `8 q7 C7 E! g
- N D% K5 v5 O* [' }6 h
- function dispose(ctx, state, entity) {, ^/ n: U1 \/ Y
- print("Dispose");
8 J- X2 O- h# k1 R8 J - state.running = false;
+ R/ h( b F! n( }1 H. T* h) T - state.f.close();; \* z' u: u2 ^
- }$ M: V3 \) q" | k, B k; u
- * Z! a8 A+ @& w/ c+ s7 J3 P4 [* H
- function setComp(g, value) {9 V8 w7 p* r3 V( T& d0 q3 [9 c
- g.setComposite(AlphaComposite.SrcOver.derive(value));* e7 O2 C5 i) d4 a* L0 b; p& R! [" _
- }
复制代码 2 s( p1 b% ]# `
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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. G, P' W. m* ]3 H! u6 j顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)" U8 I: U( w- s. { X
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