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( S0 ]; y% F7 [+ n( A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。8 T# w U; e7 u% ~' g# C
- importPackage (java.lang);$ {) u" r, F9 D8 V, r0 P$ o
- importPackage (java.awt);
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& N4 C. g' W9 y; I* T6 J- include(Resources.id("mtrsteamloco:library/code/face.js"));
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. }: k# g$ S# w% p$ e! P- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);/ {0 C7 T4 ^9 Z4 A" k
- 8 y* ?: J0 K" s' s' e6 o
- function getW(str, font) {$ J4 Y/ j- N0 G+ b& Y
- let frc = Resources.getFontRenderContext();7 [9 D1 M/ d8 O/ r, Y9 w; @' D9 L
- bounds = font.getStringBounds(str, frc);' v2 X) y5 @4 B% h$ M5 R, s
- return Math.ceil(bounds.getWidth());
- @3 K# x G* Y; C7 U& M - }7 ~& G" ~% j) V: P c
- " D( b) q6 }$ i. c- U, @
- da = (g) => {//底图绘制1 V4 ? b) D- W7 X. F4 l
- g.setColor(Color.BLACK);. F* L8 S2 ]5 A
- g.fillRect(0, 0, 400, 400);
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- db = (g) => {//上层绘制4 c* b: d) I# u
- g.setColor(Color.WHITE);
9 L1 }( U5 a9 t: H5 e$ w - g.fillRect(0, 0, 400, 400);/ ]6 j3 F/ C- e9 Q$ k
- g.setColor(Color.RED);
1 o, B& `. b8 q- q% }5 X - g.setFont(font0);8 G* n4 m9 r6 [* ~. Z
- let str = "晴纱是男娘";
* F3 ?3 C K2 F: F; L, h3 f - let ww = 400;
9 }: z) l+ X- y/ y - let w = getW(str, font0);; _$ a: ~4 ~/ v( ~2 l; T5 f
- g.drawString(str, ww / 2 - w / 2, 200);
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- ) h3 \* ^4 g7 {
- const mat = new Matrices();
( K7 c5 ]( J( q) @" `. b) x0 K+ V* o - mat.translate(0, 0.5, 0);7 @. m) }: a7 P$ c& }- e
" n! X! `% g4 i" S, A- function create(ctx, state, entity) {
* C3 k- l- f7 ^, Z - let info = {
' l h" g8 X! t - ctx: ctx,
0 Y7 C$ L/ s7 M; U - isTrain: false,
4 F1 i/ r1 s' T9 {5 v; l& H0 c2 e: B - matrices: [mat],
* [6 l e3 K8 o% l - texture: [400, 400],
, E, N- h2 j' Y9 u- C - model: {
8 k1 ?5 z: V3 ~- J - renderType: "light",
8 v2 R3 D) i8 m9 C, E; ^ - size: [1, 1],
# A& g: ^: t: q+ {8 P5 q - uvSize: [1, 1]
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- }
, U) s x6 _; `# h - let f = new Face(info);$ e! y) Y" Q( x3 d% f0 w
- state.f = f;2 w3 n! }- C j( X! V# n
- - k) J( D6 r. e+ j
- let t = f.texture;
# B" D2 C" H2 D/ C9 @% Z: F - let g = t.graphics;
. g1 v5 j* s& u$ F - state.running = true;9 Q2 Y4 F& \) N4 ]( }) g
- let fps = 24;1 C! a* t; p/ F3 g" Q( c- j1 A3 z
- da(g);//绘制底图
5 W( f; E4 h0 _$ g3 a$ { - t.upload();
2 m4 ]. J c5 n6 ]7 b - let k = 0;
( g, u% _* I) o/ x* G$ N - let ti = Date.now();
$ w2 A4 m: f7 u$ R - let rt = 0;: M* c3 k2 ?8 I/ f8 V5 ?0 o5 H9 Q
- smooth = (k, v) => {// 平滑变化$ I# T2 H: o% e% Y) i, `; d8 K
- if (v > k) return k;
) A% w/ C' H C7 G! E! p9 \ - if (k < 0) return 0;9 Y7 L; @" A& q/ w- [
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;8 U6 ^3 W5 C* h, H, P. \
- }
& m1 l ~& p4 n - run = () => {// 新线程9 p0 k t8 v4 w) n
- let id = Thread.currentThread().getId();
: I. u! _! h' A8 a5 g - print("Thread start:" + id);& x! g4 L/ K4 l& ?
- while (state.running) {0 Z+ L4 k9 [' G
- try {
& V7 J" P$ ~2 b2 q4 ~; Y$ z - k += (Date.now() - ti) / 1000 * 0.2;
. y" y* ], l8 J A" a' l - ti = Date.now();
$ P2 e/ A& Z- F4 P; [: b. X" G - if (k > 1.5) {
! Y, g4 K% p" {4 w - k = 0;7 l1 H: y& z- ?) w: V( W
- }1 z ?. `+ d, s2 R- i4 Y6 l
- setComp(g, 1);
& H$ @0 O& o8 x - da(g); N6 Y8 |2 y2 z& n
- let kk = smooth(1, k);//平滑切换透明度; x4 E8 w4 \8 w: t8 G
- setComp(g, kk);
! k0 V- W) U+ A* d2 V: H# S - db(g);
! D' X# w6 v% c7 d) L) G9 B - t.upload();2 d5 A F' }+ s$ E" y
- ctx.setDebugInfo("rt" ,Date.now() - ti);
- }! V1 z% O+ O2 H - ctx.setDebugInfo("k", k);/ R5 L3 f7 J& ]3 z+ U. M
- ctx.setDebugInfo("sm", kk);
# m+ Z. W! b: ] - rt = Date.now() - ti;; ]1 a4 ^/ R5 a, y/ f7 L
- Thread.sleep(ck(rt - 1000 / fps)); k7 B* p" B" V. U) J( Y- w
- ctx.setDebugInfo("error", 0)
' b# G( g. @6 b9 e - } catch (e) {# e* }1 c- S- l
- ctx.setDebugInfo("error", e);" L5 D9 ~8 b3 w N- j
- }, u8 F% D" y" K; \- S' ^
- }" x$ a$ P+ u: c9 e+ l* U% }, t
- print("Thread end:" + id);
) F: }! n+ B7 Q) b( k8 d - }
3 @, `2 V& c# t* d( h - let th = new Thread(run, "qiehuan");
e& g: M( E8 _+ k; q - th.start();
) Y# l9 k$ N7 J/ u - }
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( z4 @: W6 s! R- function render(ctx, state, entity) {
! C& J( [; ]; h" a& x# |/ c: o4 ~ - state.f.tick();, R, c9 _. y* ^
- }
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- function dispose(ctx, state, entity) {9 q& V+ j7 h) l; W8 @
- print("Dispose");! \5 a! k b0 _0 G6 H9 i8 q, V. G
- state.running = false;
: N' K( |2 i( m: o - state.f.close();' z3 k* x s: y k* x
- }
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- function setComp(g, value) {
7 |# W+ o1 ^3 l# {& k9 c - g.setComposite(AlphaComposite.SrcOver.derive(value));4 N% t* i5 x, d/ F$ |
- }
复制代码
0 h- b/ c# r( _& d$ D5 V% m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。; j7 x# W# d8 ~ V
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1 H' C% ~8 [: I% h2 U' A) u顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)# F/ A# X! {! j9 w
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