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8 M1 f: e8 y& i% F/ `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。- ^' Q' N" M( `. r6 K* ^9 \* H- U
- importPackage (java.lang);2 I3 R, T7 y" x: F( p2 O
- importPackage (java.awt);
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6 E0 y" O; @- f8 J- include(Resources.id("mtrsteamloco:library/code/face.js"));
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3 W1 ]7 _7 U. T* i9 ^7 y U- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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! B5 J2 n4 y" R' Y1 O* r. ~- function getW(str, font) {
! Q3 B: Y& o5 E$ q: T d - let frc = Resources.getFontRenderContext();- g ^* o" b1 t7 e1 l
- bounds = font.getStringBounds(str, frc);
" A. t0 A$ R4 t. S* k$ i }3 g - return Math.ceil(bounds.getWidth());/ h" C: R _7 N9 I2 S
- }
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$ C& B! @4 _) l7 f- da = (g) => {//底图绘制
! a! m0 N8 {5 L2 N' r* Z2 a g - g.setColor(Color.BLACK);
+ ]$ e0 w; t* W- e x) s1 T - g.fillRect(0, 0, 400, 400);
; r% V' W% K$ p& P - }
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- db = (g) => {//上层绘制, D; J4 S$ e' X* } n
- g.setColor(Color.WHITE);/ j. C( R/ M, ?! [7 Y/ i
- g.fillRect(0, 0, 400, 400);
1 f, J( u2 z; M+ t - g.setColor(Color.RED);
+ r. u5 [1 i3 }1 k' q - g.setFont(font0);4 |: f( x- |6 M; N* x
- let str = "晴纱是男娘";" j5 ^ ~7 s' J" E7 o8 x
- let ww = 400;# Z$ [/ M4 ~& w W
- let w = getW(str, font0);) L% m- {. S4 X& R
- g.drawString(str, ww / 2 - w / 2, 200);
9 U+ r. K S: T! A - }
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- const mat = new Matrices();
$ C" X8 M: ]; P- k4 h8 x e1 u - mat.translate(0, 0.5, 0);5 L' e1 {2 I9 ?- s
* N% M& u. B3 @: R3 B3 X- function create(ctx, state, entity) {/ j! v! j" J7 V1 {& }6 ?" l6 |
- let info = {# ~2 O$ U1 r Y' a0 @1 z' ?
- ctx: ctx," S, a" b- U$ T0 R) Q" E! d! z
- isTrain: false,9 H \& V# J( }8 p
- matrices: [mat],
% l" p3 E ?/ r) E( y; { - texture: [400, 400],5 _* t3 c* {* G% m
- model: {
, V3 Y8 q- n2 G$ e% r/ D - renderType: "light",
5 c" n. H5 W7 Z - size: [1, 1],
L/ e! U8 s" B6 ` - uvSize: [1, 1]
F% V/ K. a: N3 ] n - }
6 h5 b# I! V2 b5 v2 e' I$ V. z* V - }
8 G$ Z: r' Z6 U0 a - let f = new Face(info);
w8 W& L1 ^" g" d, F: T - state.f = f;+ A8 i: W$ H- I
- 8 Y: W& r* I; S+ E
- let t = f.texture;4 M% X/ _3 l6 g" Y0 ~2 ]9 w
- let g = t.graphics;
' ]9 R0 u! u% X2 {4 G! K - state.running = true;- i* {- ~! n7 e7 a) B2 S
- let fps = 24;% @) Z* g% C; h: L- R$ U, g1 f
- da(g);//绘制底图
% N- i8 F% k' N7 f6 W* N9 w1 d - t.upload();! b/ k5 s! M. f8 X" Y& A
- let k = 0;$ Z5 C8 V* M% W3 i( C. z+ n, @ j3 Q
- let ti = Date.now();* l/ x+ ?2 q5 T5 V0 }
- let rt = 0;, v) ?- {. o; S3 U8 M, Q
- smooth = (k, v) => {// 平滑变化
' J9 x8 S) f2 z. [3 P3 n" ?0 q - if (v > k) return k;
: X; A; X, C9 e. v4 b - if (k < 0) return 0;( t1 [. m/ d r8 m! r' _$ U
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
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- run = () => {// 新线程
" [* J0 H2 }- \' ] - let id = Thread.currentThread().getId();
u: h% R i6 B4 I( T - print("Thread start:" + id);( J! m+ @* D% }* {8 c2 k! y* D
- while (state.running) {4 J! L% V& [: Y o; a& [8 q# T
- try {: s7 x2 O3 B8 Q$ H( C
- k += (Date.now() - ti) / 1000 * 0.2;0 }2 ]9 o6 X' }
- ti = Date.now();& P7 Z3 ]5 Z3 E. @; [- \2 x" U1 ~
- if (k > 1.5) {
: X, x3 Q* B: }' S! W9 N. o - k = 0;
, F- x: A0 ^ N. Q5 t1 L - }
: u- o& N4 v: G" v. H - setComp(g, 1);1 W% E( T/ r. p' A8 i! _3 \$ l) C
- da(g);
( w: ~) E$ e- ]% x \+ X - let kk = smooth(1, k);//平滑切换透明度
# c4 m: z6 x9 Y - setComp(g, kk);. L% N- G; U* T! }! K
- db(g);1 m3 A. V/ ?0 p/ Z6 G7 }$ s
- t.upload();3 x! w/ M( c+ _9 f' l8 }( F
- ctx.setDebugInfo("rt" ,Date.now() - ti);
3 U* J @+ Z$ T0 a" K - ctx.setDebugInfo("k", k);
& x% f" `+ ~3 U( i; L; n& G0 t - ctx.setDebugInfo("sm", kk);' s7 m4 H N6 y" O M
- rt = Date.now() - ti;
8 j( a1 I- N8 }* i+ T1 V - Thread.sleep(ck(rt - 1000 / fps));- _8 ?, p; e y8 K# i$ }
- ctx.setDebugInfo("error", 0)
6 d6 o: v% o# q9 H# \ - } catch (e) {
2 J% E- M& k2 P! B - ctx.setDebugInfo("error", e);
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- print("Thread end:" + id);; {2 Z* t I- [0 m2 b9 @2 ^8 ]
- }0 |+ ?- w, N& m( q' W8 [
- let th = new Thread(run, "qiehuan");+ }% U( G6 K9 h5 g! b
- th.start();
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- function render(ctx, state, entity) {0 B) @# u% E) _& N% s- @- J
- state.f.tick();- N+ U4 A4 ]0 J: H& c/ u4 m6 k
- }
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$ J* }: z) N+ ]; ~' ]9 K- function dispose(ctx, state, entity) {
. |! z/ ]. y5 u/ L - print("Dispose");
n0 p7 _9 B" ?5 @9 l, L6 ^: J - state.running = false;
8 W1 b" d6 y5 n. b4 m - state.f.close();
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- function setComp(g, value) {
" [+ N# O( F, }# P2 l - g.setComposite(AlphaComposite.SrcOver.derive(value));2 U2 {2 P( h. b; X9 T8 q" H) p
- }
复制代码 0 N0 X' n7 h. P2 f" y& X. P
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。( m7 d5 @+ s2 C: J- Y% c
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; f) e3 X U! l* s. O2 a6 Y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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