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( }3 Q8 z f7 A7 d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 G0 I% S, b3 r
- importPackage (java.lang);, z; P5 Q0 r9 N
- importPackage (java.awt);
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- include(Resources.id("mtrsteamloco:library/code/face.js"));
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- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);( q1 J& Y: S. \% s2 T
1 ^( E( e+ z+ ~- function getW(str, font) {5 d; g$ [. N% H$ O7 x7 `
- let frc = Resources.getFontRenderContext();
+ }+ ~; v2 L+ @# p& C4 h - bounds = font.getStringBounds(str, frc);
4 p" y8 _% _9 `5 m6 j9 D- D) [ - return Math.ceil(bounds.getWidth());
- D+ A5 G3 g" A3 P) r - }
, y" r& `7 V" x9 |2 x7 ^* c0 [ - $ \6 }# I: u' @, w# d0 i
- da = (g) => {//底图绘制
0 L# z, a) B) ]8 J# H - g.setColor(Color.BLACK);
5 s+ M' S% t$ `5 H, f/ y. F - g.fillRect(0, 0, 400, 400);0 b. h c" T% N$ F
- }
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- db = (g) => {//上层绘制* O9 m o1 b( @2 z& q8 o& g
- g.setColor(Color.WHITE);
* U4 l" W$ ~" c0 c - g.fillRect(0, 0, 400, 400);
6 _0 z w5 C, v+ q8 i - g.setColor(Color.RED);* X5 H& g- A3 b$ ?: f# v8 ?1 _
- g.setFont(font0); V/ j" q T) D( Y# P5 e
- let str = "晴纱是男娘";$ R/ l& b, @0 X9 O
- let ww = 400;1 o" j5 D3 R5 x o
- let w = getW(str, font0);
/ k- F3 R3 R' }7 u7 j - g.drawString(str, ww / 2 - w / 2, 200);+ L9 q2 [& G" j, u4 n
- }
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- const mat = new Matrices();
/ z7 k6 m5 `, F' M' u - mat.translate(0, 0.5, 0); e- a* M* i( \ l1 q
" T/ |8 q5 a3 ^& K- function create(ctx, state, entity) {, J- B3 N$ F9 T, z8 p$ d
- let info = {+ R+ \2 N4 T: ~5 {7 {
- ctx: ctx,3 z2 [ a: o% o3 }2 D
- isTrain: false,
9 A: Q. h3 R v' H; J! }: q0 \ - matrices: [mat],
% P* F6 g% ]! Y, h, Z* H - texture: [400, 400],3 }. h0 ?" B- A; i1 J
- model: {6 S1 ^; ]& B7 I# Q7 I. _ N, X
- renderType: "light",5 }% s7 C. M# ^6 w6 r, T% ^. @
- size: [1, 1],
% v$ x. u3 j4 Q% s8 `+ s1 r - uvSize: [1, 1]
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- }
3 M# H8 ?& r( R* Z# a2 o( z- j7 O - let f = new Face(info);
! v7 {8 ~: K; ?% G! K. Z - state.f = f;% q# M: D" o: {' S5 a* ]- A& i
n, D! T: ]2 _ v$ p- let t = f.texture;0 F/ w) X5 C, o4 S6 a; r1 x# D
- let g = t.graphics;% }. Z; W' I/ }
- state.running = true;
- G8 k! i2 W2 m9 b - let fps = 24;7 C/ v/ ?4 Y4 g# Y# d0 r0 b" Y
- da(g);//绘制底图9 _; P9 f$ U' h: G
- t.upload();# |$ ?! E; \4 ?
- let k = 0;9 R" b* ]# i0 a+ A
- let ti = Date.now();
! o, l, |4 }9 W5 K1 \3 U' c - let rt = 0;
; a+ p* @6 W7 d! L: U- c0 D - smooth = (k, v) => {// 平滑变化2 {# L! L Y1 J
- if (v > k) return k;
6 j9 u9 s, `6 k1 C$ `7 q, G - if (k < 0) return 0;
9 T6 C! o& Z; \3 J# L- x, O - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;3 Q& |+ Q7 J: j! L* W" O5 f
- }8 Z% L# z+ {: s( C7 J6 t" v7 u
- run = () => {// 新线程
* {9 j+ K- Q$ d - let id = Thread.currentThread().getId();
- Y6 A: K. \, J+ ]3 ~% C6 b; q - print("Thread start:" + id);
: Y7 Q$ j$ d% e$ i/ Y5 f - while (state.running) {
$ Y( X f! N, s/ Z* ] - try {
( T% v. b! c1 C$ ^- l; s/ y - k += (Date.now() - ti) / 1000 * 0.2;
0 {7 T( C; K7 ]3 B) D+ @' A' V - ti = Date.now();1 ^3 {6 [* Z+ R- H2 q) N3 {
- if (k > 1.5) {- a2 [5 {# Q" _+ c( N
- k = 0;* S$ e% U/ B, X; D# N) q( O3 G
- }
4 |3 C2 s0 N3 J" J" V& F1 K3 N - setComp(g, 1);
& @2 ~# S% w' j2 I - da(g);
# q0 s6 g. ] C; W$ n+ I/ Y3 i D - let kk = smooth(1, k);//平滑切换透明度* R* r. i7 g& f2 ?
- setComp(g, kk);- S, B7 S1 T* M% ]* ~
- db(g);
, x/ G4 o8 x$ {, e( N - t.upload();
5 v' c3 n! U9 t/ N0 H: t( y( l9 X - ctx.setDebugInfo("rt" ,Date.now() - ti);% ?& T. o& e& Y9 r0 f4 l1 }: Z% T8 U
- ctx.setDebugInfo("k", k);
/ y/ G1 f) |6 P B8 I - ctx.setDebugInfo("sm", kk);: }3 S) Q1 D: a( `1 A8 g: e) P
- rt = Date.now() - ti;
8 z }' Q; f4 e# Y0 A- c - Thread.sleep(ck(rt - 1000 / fps));& {( m+ l. [: N: c& Q
- ctx.setDebugInfo("error", 0)
) g# h. n% k+ g+ U8 M - } catch (e) {* H( ^, l& o6 f1 n
- ctx.setDebugInfo("error", e);' t; `" x% P7 b6 O
- }# o) L7 O8 d. E! M: @# i3 ]0 `
- }
* K6 [! }" ?6 j. W2 g) H - print("Thread end:" + id);: x: t, M/ ?! f, Q% \9 m B
- }; z4 m. l! m8 U' i b
- let th = new Thread(run, "qiehuan");5 u [1 D' X$ J7 j, E
- th.start();
. ?, L5 B) y& _7 ^ - }
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- function render(ctx, state, entity) {
9 }+ `' T, q' l% m1 r - state.f.tick();6 C y0 @" ~, r4 B/ [/ f, X
- }
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# R' D" H- |1 ]) u* V! `) _4 L- function dispose(ctx, state, entity) {
- v2 |5 M4 @' `2 x* ~ - print("Dispose");! }. |' [0 | c+ z
- state.running = false;9 I- Y2 E+ |" E" T: ~
- state.f.close();
6 q, u* G7 B# Z& i" \9 W - }
* |: ^* s6 R2 m, V2 ?
) Q/ k7 i4 t9 V7 a- function setComp(g, value) {
: W# g. r9 A+ f- f9 _, ]3 ` - g.setComposite(AlphaComposite.SrcOver.derive(value));
" e/ T' g& U$ ^% I9 I - }
复制代码 4 T8 r1 h3 ]8 {! ^$ T j& v0 e
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。) F! {# T$ }$ j
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" w" A: {4 T* @. _顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
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