|
|
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
×
. f4 {9 r1 S5 K# 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。
b% Q2 X/ |% R$ G- importPackage (java.lang);9 V8 f% L$ Y( j D
- importPackage (java.awt);- S) |, a: m9 k& o8 ?2 x
3 ^$ q7 G3 P+ }* n# b5 r1 V X- include(Resources.id("mtrsteamloco:library/code/face.js"));1 u" v3 f+ c/ e) m
( k+ L, Q8 P7 |+ T- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
! |$ h Z& H* J% ?- {7 G Z - ; \' c+ P2 y4 k: G; E6 `1 Z
- function getW(str, font) {
& N% q- e; L3 o& V) N9 P - let frc = Resources.getFontRenderContext();* o( a, I+ g) _+ D( d6 ~
- bounds = font.getStringBounds(str, frc);7 m8 W* P6 K2 ^1 M/ i" n# H
- return Math.ceil(bounds.getWidth());
( `) q5 i# s8 B# H6 V - }
6 }! J0 ]' J) J8 H& e
2 x7 u+ d9 F8 x- da = (g) => {//底图绘制. ^; ~$ R6 ?! e4 c2 Y3 n
- g.setColor(Color.BLACK);' a0 ^3 t% d9 f" z; M3 s. x
- g.fillRect(0, 0, 400, 400);
4 K+ |6 W9 \! O. R! j - }! m4 _) U3 D; \6 O8 m0 U0 A- }) o
( r( O* b6 p, q8 q4 i6 ^, q: r- db = (g) => {//上层绘制
* u& Z: U$ D, D) M9 l% q - g.setColor(Color.WHITE);
% O! h5 H2 n2 ~7 Q - g.fillRect(0, 0, 400, 400);6 X( C7 D7 d+ Q
- g.setColor(Color.RED);
C% j. i0 P7 a! R - g.setFont(font0);
0 U) b$ r! j$ W - let str = "晴纱是男娘";) F; _' T* T7 R& p! {# i: H& T
- let ww = 400;: _) u* B- ?' x3 s `3 j% Q
- let w = getW(str, font0);
% F$ B, s. ]1 a) d* J - g.drawString(str, ww / 2 - w / 2, 200);5 z+ f% h$ E* u. H7 { Z# X
- }
! c" v+ ~6 X- p4 z8 o. h - 3 K% f& Q7 G6 I5 a8 E/ e: F- [
- const mat = new Matrices();) ?; @( j7 Q L% E$ O
- mat.translate(0, 0.5, 0);) t+ S) i, q& X- q& A t2 x
' B8 A" y; W* _8 {% Z2 W5 ~- function create(ctx, state, entity) {) V0 g5 q# G! Z2 B. h, \
- let info = {8 [7 u) `0 n- U0 Y) d% L
- ctx: ctx,
6 a$ M4 U# B' n! _7 d3 q" x: o0 {/ y$ S - isTrain: false,5 v& ]) \+ V: {' g! N$ Z
- matrices: [mat],
3 t1 a. F) @! w$ O - texture: [400, 400],
, l; }- P* r5 w! u - model: {( m2 ]1 Y! \0 C' ?; T- ~/ o# J* V
- renderType: "light",
( ?9 t5 @8 z; Q* g2 b- U+ ? - size: [1, 1],
4 t5 f9 F' w* E1 R( t - uvSize: [1, 1]
( X, `# A( a0 ^2 U: ] - }% M0 F4 q5 d6 V! @' Z6 f; ^
- }3 d, u% Z1 m3 [' o7 q
- let f = new Face(info);+ {/ Y% `: O8 @/ R: ~
- state.f = f;, D1 F" T H9 N
$ [# d O6 @5 \% @$ y/ M, l- let t = f.texture;
9 z9 U O9 X5 m9 [ - let g = t.graphics;
7 I7 N6 _* X7 t( g/ f - state.running = true;$ O9 z- P! B2 ?
- let fps = 24;& c! q" Y ?' b( o O; p6 U5 [
- da(g);//绘制底图
1 [; Y) {/ X* `7 F; |5 p- @1 ]: z$ g - t.upload();2 X L: `0 B6 s+ p, L7 h5 s
- let k = 0;" ~2 f1 b; Y! `5 x q5 d2 w
- let ti = Date.now();
% p5 ?. N& d' q4 A+ D1 O. ~ - let rt = 0;
7 {: G* U+ S+ l P) s* ?1 T3 C+ f - smooth = (k, v) => {// 平滑变化1 n. I' e7 F" T5 Q
- if (v > k) return k;$ I; o7 `' {% S7 u. B, u9 o0 b
- if (k < 0) return 0;# V0 t, ?# ?! v: T. Y
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;8 f+ Q( f1 i6 o% D
- }
( T8 u4 |0 R( y8 c# l, } - run = () => {// 新线程6 J: K2 `- Z" x* o$ b; J, I
- let id = Thread.currentThread().getId();* s* U1 t! c8 O. Z# a' _" @. u
- print("Thread start:" + id);2 E' m! ~& A9 J! @5 H; ^
- while (state.running) {4 Z8 B- y6 I- [& G8 n
- try {
$ o4 \4 N6 m5 a' X - k += (Date.now() - ti) / 1000 * 0.2;
, Z+ a* ^! E8 j( N - ti = Date.now();
# G3 p7 u( G5 E5 u) A - if (k > 1.5) {
1 R1 a& E2 B3 ]8 F2 { - k = 0;5 w8 z; u: }+ q8 R/ n# J: E
- }! P+ g$ X; c: T* T( b
- setComp(g, 1);
5 t4 `$ o/ x6 l9 \; q+ g% G, Q - da(g);
" e' P2 S( T+ A9 d! w7 U - let kk = smooth(1, k);//平滑切换透明度/ b- u& Z2 ^, R: T2 l
- setComp(g, kk);2 j" L/ C0 ]; e6 ?
- db(g);9 f7 U8 e% x% c7 \* B& X! [
- t.upload();5 K4 m1 W; K; ?" Q: M
- ctx.setDebugInfo("rt" ,Date.now() - ti);
1 o3 Q8 p5 i; {% J8 z5 `0 D. z0 y m - ctx.setDebugInfo("k", k);
+ L" T' o1 Y2 w+ t- m$ {: _4 Q - ctx.setDebugInfo("sm", kk);4 k) m. t4 \8 w- Z
- rt = Date.now() - ti;( {, d- V9 f% K y! H
- Thread.sleep(ck(rt - 1000 / fps));# L. f7 A( L( X9 M5 v
- ctx.setDebugInfo("error", 0)# {$ B( J p1 x- n; S
- } catch (e) {4 I4 E7 @, I4 `! M& |
- ctx.setDebugInfo("error", e);& {; C* P* B+ n2 _: I4 J
- }
' D3 [3 Z" ^: J/ O/ K* \ - }: c9 `$ R( p" W& J
- print("Thread end:" + id);
8 f" k# [6 c; C6 D3 L/ F/ R% m4 f* y - }1 m) {& E/ C( g7 }2 V7 C8 m
- let th = new Thread(run, "qiehuan");3 S5 ~) I. L5 B q* v0 w8 D6 \ [
- th.start();
# Z" C5 P- ?- l9 T7 t# I - }+ I, f9 ?4 V, q# K: c- |+ w8 p
- 7 P& x, Q# f" [2 s2 A* v) ~
- function render(ctx, state, entity) {. |- N3 g; P6 g, S, Q: s6 E
- state.f.tick();: Q d! E# G9 c( `. U
- }* W* C. E( r; T' }2 z; w
- & i/ Z5 P# H1 ?9 H
- function dispose(ctx, state, entity) {
* |% ~7 j6 X, P' c& q8 O9 L: g - print("Dispose");
% q8 M! D3 [' Z( R, E - state.running = false; ~ M1 K- ?' S0 ^5 f
- state.f.close();
; M) w1 n% U: T% y- m - }
0 R# i& L. _# j V& x5 V6 Y - , L% j: `6 t5 D v; k6 [) L- {% E
- function setComp(g, value) {9 y$ c/ p1 U+ H6 Z3 J* {% R0 k0 k
- g.setComposite(AlphaComposite.SrcOver.derive(value));
' L! E5 M+ Y' K: }5 n- r - }
复制代码
1 \& Y7 N1 f# } ^- h6 L! z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 |3 k8 @) f+ ]' w
6 D# ?) F5 t2 K4 [1 K6 ^7 e
: ?3 U& M. u$ L8 z& K/ p. l顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
* \1 w$ F: }$ T9 B7 e |
|