|
|
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
×
- }* q, A0 U5 @; M& R
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。
. M% h' @8 d. r' K- importPackage (java.lang);1 {2 ?) f7 f3 H$ u0 H/ U F
- importPackage (java.awt);! W4 n% k* p4 m8 M9 o
/ M3 b$ J F% \0 w+ q- include(Resources.id("mtrsteamloco:library/code/face.js"));; c. x& ^* G6 h' s, S
- }3 b- [* i3 T; ^( a/ b+ o- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
+ A; H9 ?5 }2 E P
0 y. @4 Y6 L8 f2 h: V: t9 T2 r- function getW(str, font) {
" w2 K9 `; T0 | Y1 G9 C - let frc = Resources.getFontRenderContext();% Y' @3 l* A8 M, L! o: {
- bounds = font.getStringBounds(str, frc);
1 L4 I- X ~; v: K# i5 ^+ n - return Math.ceil(bounds.getWidth());2 I0 k$ p# v1 c5 {
- }) D3 p9 { |* t5 Q
- 5 X9 C: Z D5 a3 ~. O' n
- da = (g) => {//底图绘制
i& ^8 y/ n9 Z - g.setColor(Color.BLACK);
- q: z3 @6 H @: c - g.fillRect(0, 0, 400, 400);
* h; A1 R- [( p1 T7 B( R - }( u; w2 I+ M; X6 U& t, n. j! o
- ( p% Y( i8 [4 n1 v# f+ Y9 R7 U! Y
- db = (g) => {//上层绘制
* h! B4 k! s7 W C" M* l( B; `3 j' ? - g.setColor(Color.WHITE);
; V8 J. ]# G6 X- e" W& V& T - g.fillRect(0, 0, 400, 400);! M$ W0 b$ V% `1 Y% P
- g.setColor(Color.RED);
. A0 R* w! l! i& K5 n5 ^8 ` - g.setFont(font0);4 O3 ~: A% @& B: q) S
- let str = "晴纱是男娘";* a8 ]% j i) }' `5 T
- let ww = 400;
~& A; u" U# W4 X9 D - let w = getW(str, font0);
/ k5 C$ R7 f2 O/ i8 H8 o( s* l1 s - g.drawString(str, ww / 2 - w / 2, 200);
1 O1 `4 }9 V2 L4 I - }
1 Z; y$ _' ]$ V- v) |! G! s" A: L - " `2 i- C3 w/ m1 I8 L( i, X; v
- const mat = new Matrices();: D7 S. ]# _ L" c8 G6 j! K1 K
- mat.translate(0, 0.5, 0);
7 V0 S6 n' J; H9 b
& B; E1 C; t0 B- function create(ctx, state, entity) {" Y r3 w: X# N/ {
- let info = {/ g7 k' a- Z. }; W7 K" q+ N) ^7 K: H
- ctx: ctx,
$ \, F1 w7 c4 Y! }& @ - isTrain: false,! m/ L/ x3 D' m0 b; q; a3 V: ?
- matrices: [mat],
) E6 @- m& o* y, J% B' M" @5 D - texture: [400, 400],* y) {% Q8 E c T( d9 W1 P' p- @/ s
- model: {
, w) t0 N4 ]: J G" [+ K: {. X - renderType: "light",
/ ?* X3 |: q/ T8 a - size: [1, 1],8 Q5 }- A" o* G0 i- @/ U* H
- uvSize: [1, 1]4 |* N- k: m$ h& {1 I
- }
( w# Q5 W' u8 {3 Z - }
& N B g* a: e$ @, V - let f = new Face(info);% C5 y& w# P( a* M% u; e/ y
- state.f = f;. c( T. [ g# k2 P+ d% S. W
- 2 R# ]' R# o- C7 v
- let t = f.texture;
8 S3 ^" x" E ~1 ^) \. {3 z - let g = t.graphics;0 j! ?! d e* p: A) `' o& ]/ I2 n; T
- state.running = true;7 h. ?# w% A9 f' `$ Z6 G
- let fps = 24;
. m; Y3 R- a3 o4 G6 I: v1 Y+ m% _ - da(g);//绘制底图" m& U$ f n3 w0 \* @4 r; ^2 J4 I
- t.upload();
1 x3 f q% i1 \. { - let k = 0;" t( d6 K4 ^1 h& X) R4 }
- let ti = Date.now();
2 j$ o) `7 {, F' _! K: [ - let rt = 0;
. h Y8 U; l8 d4 n' y - smooth = (k, v) => {// 平滑变化
2 q0 Y1 ?. Q( x3 V6 i2 M- p1 q - if (v > k) return k;
: E/ T, N" J0 x - if (k < 0) return 0;) M( m% g! Z9 _: {* v1 G5 g$ t" U
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
# ^/ E) g* D0 B - }
7 ]3 G* k( h( r/ t1 |9 q - run = () => {// 新线程: ]- e( ]) B0 L2 t4 o2 t2 N$ u
- let id = Thread.currentThread().getId();5 X3 N( r% I( h8 k; U$ V
- print("Thread start:" + id);3 o! m+ e" ^8 m9 T( t
- while (state.running) {
' h1 s7 o) `+ T - try {
% k; k2 r, |% E: T - k += (Date.now() - ti) / 1000 * 0.2;
# N h& Y8 q9 L# C' \" a/ s - ti = Date.now();
9 {9 Z1 W. M2 W5 _ - if (k > 1.5) {( @, j5 ]9 a1 y, w; Q% }
- k = 0;1 r, u! | _5 O# k7 _( z, K( ]2 l1 P
- }; p- T% I6 R- Z0 @) j
- setComp(g, 1);
: R7 L7 B3 a4 \2 j, r- C! N4 [ - da(g);8 K( z: \2 o+ T3 ^9 [
- let kk = smooth(1, k);//平滑切换透明度
! ^0 Y0 E( O1 Z- h - setComp(g, kk);' X3 K% W* G2 {/ C
- db(g);
: |( b1 a8 d; ^! B; U - t.upload();
4 x3 j6 X4 Y8 m' \* Q# O, n; @ - ctx.setDebugInfo("rt" ,Date.now() - ti);* [" B6 g& s0 r1 j) G; m$ L9 O) T
- ctx.setDebugInfo("k", k);" R* ? L' @' O4 i Z
- ctx.setDebugInfo("sm", kk);
% ^- w3 S: {+ H0 q - rt = Date.now() - ti;- V& C6 z+ @6 O$ {
- Thread.sleep(ck(rt - 1000 / fps));
6 Q* G1 \1 K# ]# a+ T c - ctx.setDebugInfo("error", 0)
# p# ^/ G2 n! d- n - } catch (e) {
6 \; v6 t; K8 f8 B - ctx.setDebugInfo("error", e);2 m! e- _+ A w5 f, H
- }
' ^& g+ f0 h$ q* [' P - }. z& W, T! f, q/ z5 r) u- K( ^
- print("Thread end:" + id);7 G: r" P) t" @1 ^7 D
- }
4 x5 U, e* B8 j! d4 {& U' w: L - let th = new Thread(run, "qiehuan");- p7 D- M' A7 k1 l8 P1 U
- th.start();
$ S3 C& ]5 _ e8 q: U - }6 A: X1 S# [0 }6 Z5 ~# W
3 H# G! o/ i1 z i! w- function render(ctx, state, entity) {# Q, ]2 J) c7 m/ J* ^0 s% J
- state.f.tick();* R( g* H7 q6 k8 u3 Q( u" u
- }& V6 F7 d0 C# C; S0 g
- : F6 V# |1 x c0 Q1 \& u) A
- function dispose(ctx, state, entity) {
$ {$ A! T7 `# T% ^: R4 O7 ^ - print("Dispose");
, P* H& u6 N/ u! `9 a - state.running = false;
7 D, N' F& G+ e - state.f.close();* T v1 ?7 R* \4 E& P2 L
- }
9 q; l. ^7 I- h5 O: T* E
2 F8 r: |+ C ^7 K7 \- function setComp(g, value) {1 W) X8 H# G: b7 m7 _: y
- g.setComposite(AlphaComposite.SrcOver.derive(value));7 a( v L7 c$ U6 g0 c
- }
复制代码
4 f$ `" x U% w2 u7 q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。
9 O& u) u) \2 ~3 f# e9 k5 p! @- f- H3 m6 ~
& o& X+ J6 E& ]0 y5 B顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
7 c2 {( c0 n) i+ |# { |
|