|
|
还没有账号?赶快去注册吧!
您需要 登录 才可以下载或查看,没有账号?立即注册
×
. L+ m% x1 ]! `, C* m: u; c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 d$ P1 K' k! d, |! W* [- importPackage (java.lang);
4 Z3 v3 {! d* \: p$ } - importPackage (java.awt);
( A0 i3 i+ G1 v2 q) h6 w - / \3 ]- i2 s4 \4 ~/ M
- include(Resources.id("mtrsteamloco:library/code/face.js"));
/ ?: [* K! o4 B t* {1 a. G - 5 p, e9 n6 X; i% h# w; I5 i. l5 w! P! N
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);/ A+ }3 x. M3 x: x4 s% r
) r3 i! M$ d' B. x% f6 v6 S- function getW(str, font) {% \9 J7 ]3 ~6 l) P2 f' Y# j
- let frc = Resources.getFontRenderContext();
; [8 m; @( o8 ^, B2 G9 }, m - bounds = font.getStringBounds(str, frc);5 X @$ x# D2 q5 S6 W
- return Math.ceil(bounds.getWidth());
+ l! {4 B& `- V. D" T( N: p - }
# \( N u# g4 z& O - $ t. [9 n3 V+ n6 r4 @
- da = (g) => {//底图绘制
' @( u9 n) t" m) T* D - g.setColor(Color.BLACK);
5 ^/ u# c7 v3 j2 F+ V/ M$ X$ x - g.fillRect(0, 0, 400, 400);& W. V; W1 X) \$ U& q. |
- }2 _5 Z4 r% g( M) I8 K; D
- + u/ D- x9 F; t2 U, ~
- db = (g) => {//上层绘制
6 s8 I. b$ o9 U' V9 f+ \2 _ - g.setColor(Color.WHITE);* [6 g( z5 m+ v2 t7 E5 `
- g.fillRect(0, 0, 400, 400);
# D1 V: K4 z3 e - g.setColor(Color.RED);
. [6 m: ^: `1 T* { - g.setFont(font0);7 p$ }2 Y& j% r3 h9 Q) ` N
- let str = "晴纱是男娘";0 V5 n" [1 S1 m
- let ww = 400;& i5 N/ \) p+ y
- let w = getW(str, font0);1 v: ]3 S1 I6 z
- g.drawString(str, ww / 2 - w / 2, 200);* Q, {6 x! L/ ^! g7 E6 ]; u+ r
- }. C$ G3 Z# n0 N* m1 W* [
+ o T4 ^8 w# B4 u2 K; _- const mat = new Matrices();4 L2 B, K2 n1 |9 U" a1 ~/ a
- mat.translate(0, 0.5, 0);6 x* w. G+ ^6 p- P& [' }
! d1 ?9 k' H! h- function create(ctx, state, entity) {- z) e) ] `& H$ D1 r6 x) w. V% i0 a- W
- let info = {
. S# b! @* H/ k- a7 ~# I - ctx: ctx,
3 [+ H6 n# `5 z3 H% q - isTrain: false,' H6 W- E4 B( E' a! w5 h9 H
- matrices: [mat],; V5 b% ~% n x! S* m4 b' _
- texture: [400, 400],$ N! G0 T$ s; C( R
- model: {
8 q- J! f. f8 V - renderType: "light",
. A# _; @5 |0 h& }5 O - size: [1, 1]," _7 J+ l$ z, S
- uvSize: [1, 1]2 R$ y; S! H o% O( g
- }
7 `: _$ K. N0 F8 I2 S. W( C - }& S' @, Z* O/ K- D( X
- let f = new Face(info);' ^4 g# |8 j& \. j, J: p+ a! c
- state.f = f;, X# J/ I: P) J3 _
- % d4 e1 [# X- O" x7 s1 b
- let t = f.texture;
$ s# f; ~6 k$ f9 B; c - let g = t.graphics;2 K5 t3 P1 ~% e9 v, U# A0 q
- state.running = true;# l" o# k2 n3 W" M1 _% D
- let fps = 24;" H8 A- G9 W& \
- da(g);//绘制底图
# t( i8 f2 v, I+ b7 z: g! r - t.upload();
5 P0 z2 x% Z# c - let k = 0;2 H! ^ {; M; |* l/ N
- let ti = Date.now();
# C& ^, C- o3 T# v - let rt = 0;
% l8 h4 o" U, y) w( | - smooth = (k, v) => {// 平滑变化1 T( j" ?# }% `. K
- if (v > k) return k;
% C6 u8 E9 U9 p6 O+ z. k% l - if (k < 0) return 0;) r& ~1 F' j5 w& N' U, n" R
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;2 K$ d' x* M$ ?( ~# h' P2 C
- }- ~2 S4 _0 s3 L7 O( c
- run = () => {// 新线程 |$ a% [" t. {
- let id = Thread.currentThread().getId();
; h+ ~# v" t. L' x! m - print("Thread start:" + id);
' t$ l* g8 \" N7 J6 R! I - while (state.running) {
( x6 S- e+ A* o' O; }; G/ T) Y/ ] - try {; o6 [/ P. ^) t1 d' a7 `
- k += (Date.now() - ti) / 1000 * 0.2;. }; ]& _2 N! ~8 Q r
- ti = Date.now();
, B" v _/ r- Z. H - if (k > 1.5) {, h( f9 q7 X2 v7 x: [ s8 Z
- k = 0;
+ a+ X k1 ^6 \. v3 E1 J- Q - }
% F# ~0 | N! ^ - setComp(g, 1);
% ^9 |+ ]/ x( X - da(g);, j& Y4 g" E7 s) r& r
- let kk = smooth(1, k);//平滑切换透明度* W! e, z5 L2 d/ s T _
- setComp(g, kk);$ \6 r: }; k5 f0 L' D7 ?
- db(g);
) m: |$ f" q5 k9 q6 ~. L; W2 w+ Y- b - t.upload();$ D: X/ k* _+ B
- ctx.setDebugInfo("rt" ,Date.now() - ti);
9 _# q3 a$ @2 _, }; G+ c - ctx.setDebugInfo("k", k);
5 J* m; @* n% Z/ M - ctx.setDebugInfo("sm", kk);
+ k0 [& Q6 y s& V2 V7 c - rt = Date.now() - ti;+ s3 b3 Z9 G- N1 G
- Thread.sleep(ck(rt - 1000 / fps));
7 M. r- ^# M; V2 I - ctx.setDebugInfo("error", 0)
, \0 j# }7 |, f% ^8 y7 V2 F - } catch (e) {
6 [3 d+ M& C; H% T9 P - ctx.setDebugInfo("error", e);& N& L; f/ I% F$ Q8 _ h
- }
3 R: D- }7 L) }0 J2 u% Y* p3 M - }
7 N1 h1 u; E3 k) n/ K - print("Thread end:" + id);
! K. G2 Q8 {1 \$ X d( K0 ^ - }
7 }! {3 \- S {* {5 A0 z. O - let th = new Thread(run, "qiehuan");
/ y3 c/ o% J; N - th.start();
* Y' F/ U4 g. k7 C, q - }
( o" @7 v8 k7 d7 r2 ^9 u- K - $ r1 D3 Q, f" B# u1 J# R; w7 o6 L9 m1 {8 E4 ?
- function render(ctx, state, entity) {8 O% A1 y8 z1 L8 d- q
- state.f.tick();% q F2 `5 D/ O5 {& e( E
- }
5 s6 j6 |# {% B+ i p( `
5 t8 P' q$ e. u% ^! z6 Y- function dispose(ctx, state, entity) {; O4 i, B* `( h. F
- print("Dispose"); x. Q+ c% l2 x" q0 T1 _, t) q
- state.running = false;+ |1 s/ b4 k0 B4 z, G0 C7 B
- state.f.close();, P+ v- r$ C" E4 Z, x: J
- }
3 q. O3 V' C k* c" j1 ] - , H5 q( V! Q8 [/ m" [0 Z( v8 v9 w
- function setComp(g, value) {
/ P# L- ^ F+ t+ _3 b' } - g.setComposite(AlphaComposite.SrcOver.derive(value));3 d$ t6 \1 H n) X
- }
复制代码 + g. ^3 ~& u: t2 U8 T
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。7 W+ k) A7 j+ o5 g: a+ g; C
9 |4 k4 c- n p5 X* c6 F3 u0 c0 n$ \. Z
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)$ i! i# R. u4 K2 ~4 C6 b& [
|
|