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7 A0 b- f7 `/ [/ C( D5 u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& @9 l8 w& ?) M3 ~6 ]+ j
- importPackage (java.lang);' S0 J2 z- {+ N0 J5 Z6 T- F
- importPackage (java.awt);; ?2 N" k8 O& j( i& g) G
- # q% X. F$ u: g8 R3 K p- @1 D
- include(Resources.id("mtrsteamloco:library/code/face.js"));% \9 u- @8 n/ T& G0 P- \/ J4 h
- 4 o0 F( X w! X3 l5 ?6 W
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);4 m5 r. Q9 [+ i$ L1 ]
- / ?+ z5 G3 F/ G; F
- function getW(str, font) {4 o9 F7 y9 q3 D) J! y: H8 ?) L
- let frc = Resources.getFontRenderContext();
1 S+ n. b0 I- b# |* {/ ^7 H - bounds = font.getStringBounds(str, frc);# s3 ^3 ?6 M; [; L+ e% J) Y3 r& g5 g
- return Math.ceil(bounds.getWidth());) E& e/ \/ k7 w6 q: p
- }
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" W* e. e) \0 Q8 R- da = (g) => {//底图绘制
7 u% Y9 l& j j" X2 E - g.setColor(Color.BLACK);) W- K& c. [9 H' K2 Y; j% J- A
- g.fillRect(0, 0, 400, 400);
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# [8 b q0 {( @4 U/ G- db = (g) => {//上层绘制% v; C' C/ ] I0 S2 M! ~* F
- g.setColor(Color.WHITE);
. }) Y+ w6 H1 p: p, U7 n - g.fillRect(0, 0, 400, 400);) m$ N0 X8 a8 e! D4 }# E
- g.setColor(Color.RED);6 T8 @; x/ ?& S6 B! b7 @: Z8 y( W: }
- g.setFont(font0);# [, P, o; B! X+ i* y! {4 f
- let str = "晴纱是男娘";
' o. w3 D) u: C, |& E - let ww = 400;
; V9 e: T" f2 v - let w = getW(str, font0);( Q0 b0 ?, h* M0 T
- g.drawString(str, ww / 2 - w / 2, 200);
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2 ]7 ^) r5 u, w/ y6 c- const mat = new Matrices();) {5 N7 ~- [2 l! S7 x' V* f
- mat.translate(0, 0.5, 0);
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. k$ w' q) W3 n8 C; H% {- function create(ctx, state, entity) {* j: E) L) k9 g! |
- let info = {7 I6 v0 f+ C- ?( K1 O" A
- ctx: ctx,8 y% z* F6 C" ]
- isTrain: false,' x" t( Y( k' {7 x1 Q. H, i
- matrices: [mat],0 k1 @' v9 J0 M. f7 k
- texture: [400, 400],. Y( G7 @4 j$ P" I- B$ G. }
- model: {+ Q) i1 ?- J% B* V2 n$ W
- renderType: "light",; K- b4 a5 f+ q% k
- size: [1, 1],
3 \: h1 a; _& u8 ?" H; u. ^( [) A - uvSize: [1, 1]
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- }
4 d0 ^7 W1 T6 B% _ - let f = new Face(info);( l- n( H: |% D: F
- state.f = f;
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- let t = f.texture;9 W2 q3 w) X3 o( q! }
- let g = t.graphics;
- u4 F+ G- i- C6 _* a+ W$ ~/ K - state.running = true; a6 c- o/ j6 Y3 r8 ^9 Z
- let fps = 24;: M& [8 y0 q g5 g, E5 J
- da(g);//绘制底图
$ Q" d; f# `$ ?! p% |3 h) s3 w0 I$ j - t.upload();
9 ]+ {+ \$ ?% e$ {5 k- q - let k = 0;. j9 K0 J* {0 }! d# A- i
- let ti = Date.now();- z) P1 c1 M/ K' I& j7 ] h j- O: i
- let rt = 0;
7 [3 x7 O2 P& `8 `3 S1 D8 O - smooth = (k, v) => {// 平滑变化6 i. c, F; L. Q( x" n% J0 v
- if (v > k) return k;
4 c& C! f/ P& e( |: l X - if (k < 0) return 0;
8 r5 A4 } Q; k- |/ h+ p - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
& b0 }4 J# e* b. g3 X. k - }
% N% t3 f- k8 \" z: L - run = () => {// 新线程
2 a- n" A6 _4 [ Y. J - let id = Thread.currentThread().getId();) D9 }0 |* R4 q, U3 S/ j* W
- print("Thread start:" + id);
: Y1 z5 [7 C- Z' l) F - while (state.running) {
% k8 [& ^9 D5 g0 Z. @% Z - try {5 ?7 r) ~) b; c8 m% Y2 \7 X
- k += (Date.now() - ti) / 1000 * 0.2;% A5 U* I6 C* R$ x% G+ c
- ti = Date.now();
1 Y& B% ~" f3 @! E8 c/ K - if (k > 1.5) {
. g: l# e* d( N' ~4 y( G - k = 0;4 Z9 C; R% `+ v% d, Q0 V
- }
% `5 t8 r4 d- r0 P+ N8 N - setComp(g, 1); e7 h# \' B% f- Z. D5 G
- da(g);
; v, i8 }2 u9 G7 B: { - let kk = smooth(1, k);//平滑切换透明度: z) R0 f& |5 |( t7 F+ G( f' G6 l
- setComp(g, kk);
+ ^1 K- g1 X2 ^ - db(g);5 b8 B' p3 R" e8 C) P2 h
- t.upload();3 S' W" u' {5 S2 o5 O* l' |, p
- ctx.setDebugInfo("rt" ,Date.now() - ti);
( u0 D" e. I5 `9 F* l6 U# q1 }% | - ctx.setDebugInfo("k", k);
2 q+ h; H" s! @2 z8 v0 ~ - ctx.setDebugInfo("sm", kk);7 `3 D4 d- r+ c
- rt = Date.now() - ti;7 _" e& s1 o8 p& c
- Thread.sleep(ck(rt - 1000 / fps));0 A) k0 E K3 W' |% Z
- ctx.setDebugInfo("error", 0)& ~! c2 t* r! x; T/ j9 Y1 D$ r# q' S! F
- } catch (e) {
1 L" ~: p C2 ?) L2 l - ctx.setDebugInfo("error", e);& D m" ^1 \6 o+ ^2 `. t
- }
7 y3 V. f$ d& c( l - }
8 n" \. u( E+ I# W - print("Thread end:" + id);4 Z" a9 }8 C f% O6 m
- }
1 T6 R1 j8 I# E1 _- y - let th = new Thread(run, "qiehuan");
3 ` A; T) h# V - th.start();
$ n" b/ N6 {0 c, Q - }
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- function render(ctx, state, entity) {1 K9 [& |7 V/ E- m5 ~
- state.f.tick();
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- 9 D5 g: C: ]: }9 d( h$ E$ P
- function dispose(ctx, state, entity) {
( r8 }, {. I% w/ E# Q" C2 w - print("Dispose");" W' M" k. s( i* m% G9 ]
- state.running = false;1 M; i: d! T9 e+ }4 e/ _
- state.f.close();/ ]2 {" |" Y) R* y8 u. `# O
- }6 O) V5 z0 G1 L! i$ ~
. \ Z A& ~- [& l" r" b+ T- function setComp(g, value) {
% h3 j3 m" Q1 ^: ] - g.setComposite(AlphaComposite.SrcOver.derive(value));
" g/ w c0 \) g5 M. F - }
复制代码
' S1 Z S/ h5 W+ c9 p$ f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: L6 s( }# U8 T; i! e7 R0 S
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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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