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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。& f- e$ ?2 l8 d
- importPackage (java.lang);
, k# Q5 i2 u; @. V$ `$ v6 L - importPackage (java.awt);
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- include(Resources.id("mtrsteamloco:library/code/face.js"));1 w; ?, y& `0 w
2 w9 ?( S( ^! ?- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);7 M9 G C U U+ `+ m
+ V6 z8 T- i0 L6 G0 d- function getW(str, font) {- @% @ B* d8 W- \
- let frc = Resources.getFontRenderContext();
/ N0 G# @0 O# a) l" g - bounds = font.getStringBounds(str, frc);
6 I6 N/ i6 V' s( ~/ j* m - return Math.ceil(bounds.getWidth());9 A; |, H# X t6 R1 a
- }
, S% Q: j% i6 d3 ?% H
5 m0 }; e+ d; w9 I! ]- da = (g) => {//底图绘制- m H9 ]/ V( z! W+ Q+ q+ o5 u
- g.setColor(Color.BLACK);
5 f- N: O/ i* I4 z4 h$ h/ @ - g.fillRect(0, 0, 400, 400);
/ {8 R3 }6 C @/ Q - }
3 z- t1 P" s. m! u6 ?3 {
4 B/ n) p& {! l* {( G. n- J- db = (g) => {//上层绘制
1 l2 ^ g5 F; r( w0 n s3 R4 h" t( O - g.setColor(Color.WHITE);
: `/ C3 J+ {) Y( q. {3 m - g.fillRect(0, 0, 400, 400);9 y# _5 R& `0 ?+ \& ]/ v' G% G
- g.setColor(Color.RED);! p' y% b8 d* L+ \
- g.setFont(font0);
6 ^" t6 G3 q }7 n - let str = "晴纱是男娘";+ u6 V- \- I* w3 d5 x% u4 e, z6 `
- let ww = 400;
3 x3 I0 G4 v! L% o; s e - let w = getW(str, font0);; n9 m+ u6 y6 f, S0 p
- g.drawString(str, ww / 2 - w / 2, 200);
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: G( ]; g+ I( g" B- const mat = new Matrices();5 y1 X) v# r' H( ~" V- W
- mat.translate(0, 0.5, 0);
, R4 C# ^0 O0 ?; J& G! q- A
5 `8 ^- v- N0 y( ?( J- function create(ctx, state, entity) {
0 u; @. D0 i/ S) @. A I5 X0 y1 f - let info = {
( B. h3 f' V" W+ U e - ctx: ctx,
) T5 A% W: u; F! A - isTrain: false,
% t# W! y) h6 r1 T' C6 k% p" H - matrices: [mat],
* j! B8 @( K1 C! X4 i - texture: [400, 400],
, Y4 _1 Z0 m% b# ^$ P* H3 { - model: {5 N, v7 w) g; X5 L% x4 F
- renderType: "light",1 c7 t2 H. C+ S o
- size: [1, 1]," q3 O" z2 t: |; S0 M2 _
- uvSize: [1, 1]
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- }9 u, ^. t8 a1 [) n
- let f = new Face(info);" X& F& P/ N4 i
- state.f = f;
6 j7 E& t. f3 b0 x. z3 r/ |
/ E5 P+ [1 B- V; d1 j, o- _ M, j2 q- let t = f.texture; b& C9 S, F0 |6 {: s# _
- let g = t.graphics;
: Y, K( j' m9 U; H/ |* } - state.running = true;
9 a D) M% |/ a- B/ [, h - let fps = 24;6 K$ s, V9 k1 N2 a* K i2 [6 f
- da(g);//绘制底图: o( t. f9 d% h5 c7 h f; L
- t.upload();
; `, f2 x! i3 g7 U - let k = 0;
* q) c* e5 ?' A. N3 g - let ti = Date.now(); x8 c( Q9 k, r( [) M* b. j( i# }
- let rt = 0;" s- D+ [5 u- o$ B' U4 Z2 j2 G7 w( Q
- smooth = (k, v) => {// 平滑变化
' L* D0 a1 G m+ v) ` - if (v > k) return k;
z4 Y/ w, q3 }; i5 m - if (k < 0) return 0;
; t; b' U2 l! y - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
/ H* |, ^ b, J$ Z - }2 a' W& b: L' f1 m% d ^6 Y
- run = () => {// 新线程
5 k6 N% T7 X, _1 ^" k( |1 G - let id = Thread.currentThread().getId();9 Z# p( p7 }/ a) A
- print("Thread start:" + id);
" Y- c! D9 D2 ~! u8 h$ S/ j - while (state.running) {* L. s. _3 p0 F8 p
- try {5 B* s( r! ^7 d; j$ z
- k += (Date.now() - ti) / 1000 * 0.2;
" r) u n$ }0 N$ V2 Q7 q+ X8 q2 e( V - ti = Date.now();
( O& {, [0 N/ g- H4 ?) p! O) s - if (k > 1.5) {; K( j% ]6 ~- Z8 r
- k = 0;% w; R' g& H& @ B2 T
- }
; w& `$ q" m( D( z5 Z8 Z - setComp(g, 1);' T& s1 Y' t" m/ N0 ]0 I) U. y7 U
- da(g);4 k% s* y% }1 E$ e+ x+ b1 J& n& q
- let kk = smooth(1, k);//平滑切换透明度
: f9 X- P% ^5 O- W7 V# ` - setComp(g, kk);" R$ {7 \8 z, B0 a$ i9 Z% e# N
- db(g);) M) D& X3 |# N+ h. C
- t.upload();/ Q1 d5 ?- F% H% ^4 H
- ctx.setDebugInfo("rt" ,Date.now() - ti);6 S& `2 z2 l" H* u$ x- V. T: W0 i
- ctx.setDebugInfo("k", k);$ Q7 t* X" ~! F% v/ A
- ctx.setDebugInfo("sm", kk);
0 l% ~2 I0 s6 E8 e7 F6 i - rt = Date.now() - ti;! @% P* J/ n* ]
- Thread.sleep(ck(rt - 1000 / fps));0 |# ^) [0 _5 |/ D
- ctx.setDebugInfo("error", 0)
# } _: J' K" p# h$ a8 V - } catch (e) {
$ J4 @$ z# L( u4 U- T$ q5 f' P8 \ - ctx.setDebugInfo("error", e);2 E$ m) a6 s0 F- u8 Y7 C
- }* W- |8 J) ~& b% |/ g4 J' u. l$ z
- }
) Q2 w( ~& w% _. `- H4 i; S& j - print("Thread end:" + id);
$ N5 L+ K. O9 C3 z, e6 M - }
1 ^) H! `7 [+ s3 B. ]# q( E - let th = new Thread(run, "qiehuan");
" X g$ R! n3 j+ B9 k - th.start();, }; d' n/ ~$ ~) U& U4 [1 z
- }) b% Y! P8 A9 h+ a; y$ C( f, m; O( l# q
- 0 x6 w2 H7 \( @# Z9 ~. Z
- function render(ctx, state, entity) {: I+ U( k* h* ^
- state.f.tick();
' r6 B2 C/ e3 r0 T0 e e - }
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- function dispose(ctx, state, entity) {
0 |. H: X: O! v4 P* I# ? - print("Dispose");
5 g1 {, r- K0 j, i/ Q* q6 w& j - state.running = false;' d/ R/ y3 T% R7 W7 ]6 E& n! r
- state.f.close();2 T+ x$ Y- k0 C { T4 B# }: G F+ K
- }7 T3 {5 ], r0 r* y+ {' O, P) K" [( `
0 y8 E$ n" L5 u0 R" m5 N3 s ^- function setComp(g, value) {
3 ^9 l# t0 p7 U5 Q& X! G' o - g.setComposite(AlphaComposite.SrcOver.derive(value));
0 O4 f- p9 M& \' v. p - }
复制代码
e) k% Z4 a4 [# I: R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。( \# u& s T& F; U0 X$ z0 w5 Y
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; B& I6 p) G/ U, h3 n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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