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1 M; e) P& h0 l+ C m4 Y3 c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。2 ?; ^4 y& d7 \
- importPackage (java.lang);
$ o0 a& f. j0 f8 H - importPackage (java.awt);. U* N" ~4 i( B
- 3 G9 J8 d2 m6 E2 e7 _4 r. d+ H
- include(Resources.id("mtrsteamloco:library/code/face.js"));# c( A6 }6 c5 R: U) c. y
- 0 G4 k" `0 F4 _& X
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);0 g% O0 l/ Y* X! i
- + S; d8 J9 k, s# ~( f
- function getW(str, font) {
9 w( a/ e1 w# j. l( ~8 S Y - let frc = Resources.getFontRenderContext();
( ?( P' q4 p9 K4 _ - bounds = font.getStringBounds(str, frc);
9 ~( y! T& Q6 Z - return Math.ceil(bounds.getWidth());
8 @& ^6 h% S6 W1 C - }
, S3 ~$ n" w: I/ |
2 c# u# a9 c( l& s1 B* `* c- da = (g) => {//底图绘制" y; F0 Q$ |+ g
- g.setColor(Color.BLACK);
' @8 g9 m6 ^* y7 J+ Y$ q - g.fillRect(0, 0, 400, 400);
R) ~, p0 u4 T7 G - }; a* C8 L. T$ B+ }& \/ f, O
% j+ `2 S3 j/ L1 ?# \5 v: `, T& }- db = (g) => {//上层绘制( H- M6 W4 y, Z# S/ ~! H5 b7 n
- g.setColor(Color.WHITE);6 ^+ f g5 k' t* e$ e
- g.fillRect(0, 0, 400, 400);9 v* F Q5 v0 X# A; ?
- g.setColor(Color.RED);
- ?) D. ?) B O: \/ q h* h9 N8 b - g.setFont(font0);- w$ w) r! P, D5 ]. I
- let str = "晴纱是男娘";
7 q. i, P) D5 B* D, Q - let ww = 400;
( r% p/ d' ~- v' g2 a0 U' p - let w = getW(str, font0);
( p% O8 |8 L! S/ [ - g.drawString(str, ww / 2 - w / 2, 200);5 H5 j; [9 i8 V4 |9 |! a; p
- }" }( U& Z# k( e( e- c
* M Z1 y. b0 D, }1 b: y: |! w- const mat = new Matrices();
5 `% R7 L; \& E - mat.translate(0, 0.5, 0);0 N+ E, Z# k" L" c4 h9 S) {
. |/ G0 c: W$ O2 K& B- function create(ctx, state, entity) {2 b* c4 \, O: o6 a. U
- let info = {) G0 H5 n c# Z4 W% i
- ctx: ctx,; O8 L% w& z' c7 M
- isTrain: false,
, H) @+ r6 B' S* T5 t+ }3 o6 I - matrices: [mat],. F+ p9 _- J4 I0 K" \
- texture: [400, 400],1 [2 ~$ R. e7 P+ F- X/ I
- model: {# ]- b. B) ^; K+ }& q% |
- renderType: "light",
* ^1 c: M+ s( G' W: U$ ~ - size: [1, 1],# z) L9 J& C h) P
- uvSize: [1, 1]
; C5 }: v7 E4 Y. o- o& T5 g3 `& ]8 h - }% ?, X& E9 J7 a- Z( E' W. n7 _& u
- }
( M+ _4 Q0 J2 F* L3 r - let f = new Face(info);" g( o# V7 N$ X4 w9 c- P3 ]4 p0 ` k
- state.f = f;( r3 W+ e- b( p; ]
- 3 a$ Y! g5 j& _& G( j
- let t = f.texture;
, O2 C1 {$ A4 d$ U* ] - let g = t.graphics;8 Y' Y$ n: z% m0 B0 Q! x4 K& l! r6 J. b
- state.running = true;
$ m( J9 V% @. H t" C. X - let fps = 24;- T+ c! y" S! D; t
- da(g);//绘制底图
) _3 o% [9 F/ T- ~, b% ] - t.upload();
. Q' S" `, p- G% } - let k = 0;# j, o$ n% K* v- I: m" W; `
- let ti = Date.now();
" Z0 L5 z% g8 D* H - let rt = 0;
* ^" z/ K" a1 a# [( S - smooth = (k, v) => {// 平滑变化
" V+ O# l% `( C - if (v > k) return k;
" o( F. W6 v! i$ ?& s+ J - if (k < 0) return 0;
2 s& {7 I, ~9 V6 n- M2 v7 M7 i6 t - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;3 s/ w- j, @: e! v
- }
% ~- t, w; p0 {5 P& i" ^6 W - run = () => {// 新线程
. ?( j' e( K b' m2 G @9 e. f - let id = Thread.currentThread().getId();
3 b( q2 i2 Q+ f5 B3 f - print("Thread start:" + id);
- J+ F5 n o* F( p7 R. o# R/ J - while (state.running) {8 {* C- c* q* M* \$ _
- try {
3 R* i8 \* _7 P# a9 U5 N - k += (Date.now() - ti) / 1000 * 0.2;' Z0 I2 G9 {% K) ]& G7 \4 E
- ti = Date.now();
9 Z+ I+ i7 w+ {% f) }) R8 S" E1 p - if (k > 1.5) {5 E/ d; U' Y0 T$ M9 c- }0 ^
- k = 0;0 R( G$ ~/ ~3 Q# C' j
- }
5 u* G: A1 O+ O J - setComp(g, 1);2 E8 _ |1 r2 E" H t
- da(g);
5 U9 Z. U' r/ K5 A3 U - let kk = smooth(1, k);//平滑切换透明度" |9 ^- @3 I4 S* e( L$ B" Q$ d
- setComp(g, kk);
; Q3 m* L3 n8 Q5 [9 ~ \0 s - db(g);" Z$ o7 t5 T8 U m( @% |. Q
- t.upload();
4 [6 |6 F0 ^1 s# B' j& C: L* ` - ctx.setDebugInfo("rt" ,Date.now() - ti);
! y# ?* i- R8 i, \. T* A. M - ctx.setDebugInfo("k", k);
& A0 b( x7 H& M# o6 [& Z - ctx.setDebugInfo("sm", kk);
9 W0 \, L) T1 A' x - rt = Date.now() - ti;
7 L6 {1 D) x5 w- j! V - Thread.sleep(ck(rt - 1000 / fps));
' c7 N$ W! ]- ?- v- S r( }* w - ctx.setDebugInfo("error", 0)
8 _4 _7 k+ A) F - } catch (e) {- Y9 a+ R& g$ [% X X* O
- ctx.setDebugInfo("error", e);% g: i: H5 i7 B, H) `% b* a
- }
' y- \& M( M t# h - }9 e4 I; u. X. q8 }6 x: N& ?: l7 C: L, f
- print("Thread end:" + id);6 x$ j) R# G m( ^: a Y4 v# ?
- }
$ v, S) P9 t9 g# h) t* Y" @ - let th = new Thread(run, "qiehuan");8 ~; j: t' d" H' }. o' a$ ]+ y
- th.start();3 i7 O* q: {+ I9 J6 N% D6 e
- }( Y. _1 @ J2 ^' j
9 H: w5 N% u! h4 d8 X- F& j1 d- function render(ctx, state, entity) {& {0 |* d5 }9 X/ S- E: J7 [
- state.f.tick();' m s! A; e) d! h& v: g9 M
- }
4 P3 C3 f7 `, [/ t
+ l4 _# q: ]. T' H" b& ]# `: h- function dispose(ctx, state, entity) {
" S; a' X: Y0 m t; `7 k% @( t8 T - print("Dispose");( z( W2 l; I6 z8 F/ w
- state.running = false;+ R4 T2 U5 \. c. Y: B# S( T
- state.f.close();& u! H8 C6 k2 }4 P4 t- W4 \
- }, t; J8 o# i+ @
( t& l$ ?5 q* ]) q: {% y- function setComp(g, value) {
0 [9 ^, J: A6 \" t8 M - g.setComposite(AlphaComposite.SrcOver.derive(value));% k, b5 G! Y( u/ T1 N
- }
复制代码
. I5 C; ^5 {$ [8 [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。# |+ q1 e/ n+ m9 h
l) \& ~- p5 f! I
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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)" o [% W& a/ W- N2 E
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