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% A. u3 {) v# j/ m$ |3 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 Q1 e& R* K) A2 E* a% X
- importPackage (java.lang);8 e! D3 ], l- t g
- importPackage (java.awt);
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+ v$ J+ Q' s( F. n3 b- include(Resources.id("mtrsteamloco:library/code/face.js"));9 m$ [5 f% y- s
- ( R$ Y7 B9 R; h `# D; P
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);# y! S$ y4 E1 z% b
& F& \ _4 v# E6 w8 f2 f8 |0 F- function getW(str, font) {+ P; K9 G9 t2 I" M3 m5 _% c4 c
- let frc = Resources.getFontRenderContext();
% N8 r* N% }/ P& A) m) B5 R3 ]4 | - bounds = font.getStringBounds(str, frc);% P% u, y+ }6 v9 ~. I
- return Math.ceil(bounds.getWidth());+ d. t( |5 z0 u% s. c
- }, y0 E/ a2 K) n; y3 s% ~0 r
- ; J. ?* J. R3 e
- da = (g) => {//底图绘制
. x. t0 T( z! }4 t5 v% `9 p - g.setColor(Color.BLACK);
# w0 k( s$ J( E1 B2 C; E" l - g.fillRect(0, 0, 400, 400);
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" ^6 L" z! \2 H9 d% c+ ^- db = (g) => {//上层绘制* e M' y% S6 {' f4 M4 I1 S- |
- g.setColor(Color.WHITE);
' V; @$ u; K$ X. r, s# h$ ^7 x - g.fillRect(0, 0, 400, 400);
- Y! ?4 e' K. h4 c" \8 L) z* s - g.setColor(Color.RED);
g! T$ @2 o/ Q$ B - g.setFont(font0);
8 k5 Q/ [ z' E3 Y$ {7 B - let str = "晴纱是男娘";
/ E* `" v# C/ L* o: I - let ww = 400;
6 V7 c) l4 }- B% Z0 P- v" r - let w = getW(str, font0);1 u0 [2 O7 Z. \' w/ M
- g.drawString(str, ww / 2 - w / 2, 200);- Z! g( ^: u5 }) {
- }$ Y" ~9 N' R4 z+ n
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- const mat = new Matrices();
o( }. w( p5 A L7 Q; m - mat.translate(0, 0.5, 0);3 Y. j6 U1 D! L2 p; u- [. } ^% A
% C6 N X1 d& P& r/ U- function create(ctx, state, entity) {
% v7 X9 q' B. V r - let info = {6 r7 [6 v6 T3 p/ I9 F3 c; f
- ctx: ctx,
. W3 ?9 {- p. S! v - isTrain: false,$ ^; ^2 q4 N% z: a- q( ]- U G
- matrices: [mat],! v' @9 I: X& A' w, N
- texture: [400, 400],1 C- E7 k( |- E% ]( [
- model: {/ g0 {: D2 p) c
- renderType: "light",% j+ D8 a$ Q w
- size: [1, 1],5 x; D8 b0 m' Q0 L
- uvSize: [1, 1]) J" d9 i" e( z$ r* k5 ^4 B
- }
# _3 m, c9 }. k( E: }6 u8 ~: C - }' t4 }! _ e/ H) b' Q* I; O
- let f = new Face(info);9 E; R2 i) o& g5 l
- state.f = f;2 t" l7 p3 E: q; T) _$ q' L( R
( ]4 V8 b2 P. p/ M! h A7 s( @6 P- let t = f.texture;
0 i5 |! w- ]9 U8 I1 P - let g = t.graphics;% v) F' @! ^1 m, p+ i5 X5 [
- state.running = true;
3 N' V3 ]% ?/ w9 a4 p - let fps = 24;* h( n6 R3 ?& R3 b* I
- da(g);//绘制底图
1 K) e7 i% C- W5 r/ c. A - t.upload();' W! @0 P q, p4 I
- let k = 0;
1 N( o- b7 d" ]. D3 }; i/ S; D" P - let ti = Date.now();
L6 s) n, Q# \ - let rt = 0;: }, k! Q* g; z' E; b# j( w
- smooth = (k, v) => {// 平滑变化6 X) H; Z- t) m5 y2 o
- if (v > k) return k;% V+ P2 J( u$ L) |7 c, j
- if (k < 0) return 0; e" h( V8 L1 U. ]
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
/ b# C$ B9 Z, A$ a( P - }4 R3 B& N) F9 @1 _
- run = () => {// 新线程
W* S, Y' g1 `) t8 p r! h1 E - let id = Thread.currentThread().getId();) f) P" y5 ~ L& K
- print("Thread start:" + id);+ G& ~* v2 O( A9 u( h) \
- while (state.running) {
( ^7 l3 Z3 I' Z+ k( i - try {
: L/ L2 \, r7 Q! T9 t8 v - k += (Date.now() - ti) / 1000 * 0.2;
4 _$ D' {5 W* H - ti = Date.now();
0 x9 Q- H6 i- x) U" e - if (k > 1.5) {
- P6 ]6 J; H% j/ j8 n- x# v N - k = 0;
( g- T( ~) g% I' x - }+ u) b1 R! n6 @( _; I
- setComp(g, 1);; ^5 w! ~3 Q* o, T% ~$ k
- da(g);: Y! s+ \# r. t; u" E
- let kk = smooth(1, k);//平滑切换透明度7 S5 f9 ?" |4 n( f- C. F! l
- setComp(g, kk);( V" q, j6 s+ A0 j
- db(g);; @6 z+ o- R/ K z9 n
- t.upload();; }5 A3 f% f _' u
- ctx.setDebugInfo("rt" ,Date.now() - ti);
+ g4 H7 L7 Z5 h/ c1 C - ctx.setDebugInfo("k", k);; J! M9 t: N; \2 m& C$ {# q0 }
- ctx.setDebugInfo("sm", kk);
1 h8 M* X5 W! k5 i$ x- o( M" C - rt = Date.now() - ti;! s1 \" g$ O2 N+ \
- Thread.sleep(ck(rt - 1000 / fps));
. @) Y9 z8 d& `2 ^: c1 S) y; k4 Q - ctx.setDebugInfo("error", 0)' L- Z6 E: O5 Q) {
- } catch (e) {* h& Y& o" A$ ]8 i8 P" Q2 Q2 [
- ctx.setDebugInfo("error", e);
; f5 {: M' S! e' P8 t - }
( b8 {6 Z; E3 E8 X/ P" K - }
4 }6 h# L. y. ? - print("Thread end:" + id);7 Z, u/ d: V' g3 u% K9 Z
- }8 }! R L- [" C* n
- let th = new Thread(run, "qiehuan");3 \+ @' R1 y% ^
- th.start();4 M" u, l+ y4 x- j* q2 G
- }7 c3 _; M& X" Z P; R
- : B& w( n+ \4 f* X
- function render(ctx, state, entity) {! c: h5 {& [: n3 S A; L
- state.f.tick();
/ X9 V2 s% ^, c0 l& l - }
9 ^( T* Q* {9 |: t4 Q; r8 a) p9 ]5 t - : m n9 M$ B3 Z2 m( i
- function dispose(ctx, state, entity) {
# R% z7 n f, i+ T - print("Dispose");
- D* v7 d8 G! i! m, ~" [ - state.running = false;& Q. G+ F8 R1 O0 g& b3 f9 |
- state.f.close();+ |1 ~% a& B6 V0 O3 k4 O, S
- }
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- function setComp(g, value) {8 p2 W% p+ ~8 v( F( N3 A
- g.setComposite(AlphaComposite.SrcOver.derive(value));
8 ^3 g, \8 w% e/ {- J/ g - }
复制代码 . g& p$ l. C7 o3 f+ l! s
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。* |; o. D6 e$ n1 t2 w1 ^) }4 L
+ S* C( b+ c* K" u
" i x. x- V( O5 r ]7 J3 `' ~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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