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* L/ S n7 Z2 t) l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。. C6 o" p0 d1 a+ @. Q1 S
- importPackage (java.lang);
9 z9 a- R k7 `8 F& U4 k2 K - importPackage (java.awt);6 @1 O2 {! r; L- H" g; h4 I
/ {! }! m8 [7 ~9 ^3 n* z- include(Resources.id("mtrsteamloco:library/code/face.js"));
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! Y/ D6 }" F+ p' j0 @- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);/ w! r1 ~* ~2 ]; l: a F
$ y. Y, w6 P8 `1 d" Z4 z6 M1 I5 i- function getW(str, font) {3 s- s7 v( [: K
- let frc = Resources.getFontRenderContext();
) n8 X% \9 i2 Y - bounds = font.getStringBounds(str, frc);" o' d6 |8 K6 z9 r
- return Math.ceil(bounds.getWidth());$ U& X. ~& e6 C! j L
- }
/ {( b" S3 u: A1 d/ i% s - 8 f/ G( X n2 k& R8 _, v2 r
- da = (g) => {//底图绘制
7 w/ b" k7 L7 V' C/ S - g.setColor(Color.BLACK);
5 Z2 f7 d/ L/ w1 K/ k3 c - g.fillRect(0, 0, 400, 400);
+ U- `2 f7 a% a - }+ R+ K# k3 S k; d% Z+ q9 C
- 6 p9 q" }; |' v1 f f
- db = (g) => {//上层绘制0 S( ?4 M/ L1 z$ W6 c7 R, p$ L' S
- g.setColor(Color.WHITE);
+ t* `5 `2 ^" j8 B+ |! N3 [ - g.fillRect(0, 0, 400, 400);" W$ A" n* k1 |) @
- g.setColor(Color.RED);8 A2 V& s1 E; z" N& h' `( `6 u+ Y
- g.setFont(font0);5 H7 B5 F6 k" F0 d: b n% m
- let str = "晴纱是男娘";4 [- i _# {8 A J# m7 n0 |
- let ww = 400;0 H" ^# s" O# U, \. X
- let w = getW(str, font0);
7 u6 F: c- ~! K1 W8 ~# L - g.drawString(str, ww / 2 - w / 2, 200);: t [. z- Q3 o) r9 l
- }* J! q# K: f* ^. B+ S
1 [+ W9 c2 T/ [" X/ }) Z- const mat = new Matrices();! G0 M. U, Y- T0 O) |; G+ y9 O
- mat.translate(0, 0.5, 0);
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2 C' J5 S/ q- X- function create(ctx, state, entity) {8 G" S7 ~1 ~4 M: D- i
- let info = {! e% R& c" N: ], g F! A
- ctx: ctx,, |9 [, ~! U4 m5 p7 ?* T: `* U+ s" w, q
- isTrain: false,6 k6 ~4 O6 g' N2 w1 w- h& {
- matrices: [mat],1 @ W8 a4 k. i3 [: P$ l4 M e) `
- texture: [400, 400],# i5 _8 V% d3 R
- model: {
3 d/ ^1 h4 H9 t+ @. Z9 k4 x; k8 W - renderType: "light",
* J0 q x! o+ y% C5 G+ h - size: [1, 1],, c. v& r" q; Q+ y& ^+ Q
- uvSize: [1, 1]* A0 S9 {% J" H3 A" ]- _
- }0 o% d- O/ k- E' y
- }
! q* D2 e$ g0 V - let f = new Face(info);
( y/ J' Z- S Z" h8 } - state.f = f;) M7 b& ]' u" ?( H& c7 n
% M: E% v) C& ~- let t = f.texture;6 z- S( D1 q. s. \, ]" }
- let g = t.graphics;
" V1 S8 S% N& j - state.running = true;
( |- g0 S. z5 u - let fps = 24;2 b: Y* @$ g" @% @0 |1 `0 A, x
- da(g);//绘制底图
# z6 v& A' P, |0 a - t.upload();
7 C4 W6 y v) L$ t9 s - let k = 0;4 M z3 o4 J9 P/ \2 c9 G; |
- let ti = Date.now();% _: {0 t3 ], Y
- let rt = 0;
6 `/ u4 p5 p' x: @ - smooth = (k, v) => {// 平滑变化( F" y8 {: o2 l0 b- ^% r0 @
- if (v > k) return k;
& P% G" s5 i& e+ Y+ O - if (k < 0) return 0;
8 {" V- q z) p; V6 N8 ]1 N - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;" W ?2 ^1 s7 s+ @2 g
- }! f3 T, v& T1 ?0 ]: Q
- run = () => {// 新线程
2 p9 C" I0 k" r# S( I1 p/ J - let id = Thread.currentThread().getId();
! w& F. a! @* c0 ` - print("Thread start:" + id);
9 T+ \& E% `& C) \ - while (state.running) {8 g/ D: }3 N8 {- D' V8 I
- try {9 n- A! t' F0 U; z5 ]
- k += (Date.now() - ti) / 1000 * 0.2;
' j' f: L8 W" a1 {/ S/ O8 ^/ g - ti = Date.now();
( v, U2 `" X. y, Z - if (k > 1.5) {3 q! q* ~8 V3 O- N$ y) e9 Q
- k = 0;* I7 Y8 b6 x1 a
- } { J) H! k- h, K
- setComp(g, 1);
& M5 y6 l f" v - da(g);, S+ }) I& j% U' ?. l
- let kk = smooth(1, k);//平滑切换透明度+ w p+ [3 B0 g; N% Z1 `
- setComp(g, kk);
, e: S) r% L: s& R6 S - db(g);
# W8 c' p. |8 A5 _ \ - t.upload();8 h# w e! K3 R2 }* n) v
- ctx.setDebugInfo("rt" ,Date.now() - ti);
4 Y+ R, h" [4 N- b - ctx.setDebugInfo("k", k);
9 Y+ G/ K3 Z8 G# L! p4 N - ctx.setDebugInfo("sm", kk);
; i! t6 ]: M7 n: m) |% h" o( S& s - rt = Date.now() - ti;
+ u$ b7 M: y' P$ p, h5 R) f+ z - Thread.sleep(ck(rt - 1000 / fps));
4 {# E- T+ d1 {- [8 U# A - ctx.setDebugInfo("error", 0)0 n( `8 o. T9 i
- } catch (e) {* ~/ A3 o8 @9 M- T |
- ctx.setDebugInfo("error", e);. ]/ x: q; a2 P0 n& t
- }
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- print("Thread end:" + id);
2 D5 p3 b0 |3 X9 t# p9 v( h* K: q - }
2 d+ n3 v4 L- e" U) ` - let th = new Thread(run, "qiehuan");2 G; n7 M3 Y$ Z# D& K; f
- th.start();
/ m1 \: o" z7 r6 F7 c# m: I - }
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- function render(ctx, state, entity) {; n3 N& a: h$ o2 j
- state.f.tick();& N a) E8 g. D/ S7 ^
- }
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3 ^, P) |5 \4 x8 L+ w- function dispose(ctx, state, entity) {
( U, O& ]3 c# @) G# ~6 L) l - print("Dispose");' Z% i0 j, _* X
- state.running = false;( l' z1 m9 c; J2 c/ q
- state.f.close();
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: o% z r5 @3 i' I) ^- function setComp(g, value) {0 _) i6 ~) x% ~) b( T: z& _! @
- g.setComposite(AlphaComposite.SrcOver.derive(value));
J9 W, q8 \1 Y+ t- E* E4 a - }
复制代码
, E1 c: j; V7 S3 D2 e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。
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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)
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