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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。 @+ o4 K+ t: U" q
- importPackage (java.lang);
3 c; u. I7 N) @. G, w9 i - importPackage (java.awt);2 w% |- i9 K3 Z% h: s
- k5 {- B. f7 {0 r- include(Resources.id("mtrsteamloco:library/code/face.js"));* S! i" `7 w4 I2 K. G
9 N1 _0 z1 w2 L- f O. W# E- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);! t, G' m* n) T4 v7 d% A# v
- , s" H7 [6 I! ~, }1 S; S" Z7 l
- function getW(str, font) { i5 ]8 u8 O! z; y7 G4 G* h" Q
- let frc = Resources.getFontRenderContext();, `" e, L* n& g. k
- bounds = font.getStringBounds(str, frc);; S+ t3 m8 F2 @, A& @
- return Math.ceil(bounds.getWidth());
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1 F5 I- k4 [. l! ^ t$ _- da = (g) => {//底图绘制
8 g+ Y* \% A# z" o5 U - g.setColor(Color.BLACK);
7 P I/ J0 ?8 N, b3 Z1 \ - g.fillRect(0, 0, 400, 400);3 D9 G) I; y$ F7 k. E9 n7 z$ N# p
- }
" [0 F) Q; n: g" z7 G7 n& U& p+ }' o - # z6 t7 N# C6 f) v8 L+ W
- db = (g) => {//上层绘制: |/ v* N6 s# @& y5 h
- g.setColor(Color.WHITE);
* C. v0 I/ `+ a- f - g.fillRect(0, 0, 400, 400);
+ l3 _# l% u+ z4 e - g.setColor(Color.RED);: m, f6 S+ W8 A K, E5 N/ w7 j
- g.setFont(font0);
6 E% f5 O6 @2 v5 @ - let str = "晴纱是男娘";/ Q1 M- K! i) K- Y
- let ww = 400;- W% k5 \$ e2 O: f3 ~9 g4 i
- let w = getW(str, font0);7 h% J) v2 r2 G+ z
- g.drawString(str, ww / 2 - w / 2, 200);
% F* g4 K* e) H/ K - }
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- const mat = new Matrices();
0 `3 B1 W0 p7 F; x$ l+ W - mat.translate(0, 0.5, 0);* F/ k% I! L; ?. O
0 e/ [! J2 n8 y: O4 \- function create(ctx, state, entity) {4 e# D N+ x3 [0 }. q3 R8 v
- let info = {7 P/ w- u0 h7 W; R1 V
- ctx: ctx,
7 c! n: X4 Q; a- C2 d3 [ - isTrain: false,
# O( a& l) h$ ^. w7 W - matrices: [mat],
5 j, h) `8 J; F - texture: [400, 400],
( q; }9 Z$ {0 v/ q/ f/ g' w" X5 V- Y - model: {
$ ^- v/ Y0 \% d4 ]' a- I - renderType: "light",4 @' s- G Z6 U6 c5 _
- size: [1, 1],
& F1 _ D- c: v+ T$ T - uvSize: [1, 1]' \, c+ ]+ i( `% ~' H; Q8 z
- }
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- let f = new Face(info);
3 e# J2 E+ u0 Q6 Z9 x - state.f = f;
# e% r$ C/ q* N& t
% `5 ]1 `, B r+ j" ^8 v/ q( `- let t = f.texture;
8 F; I0 A8 q5 T5 r) J - let g = t.graphics;
: O, n: j( m) A) @2 i, j: l - state.running = true;) u1 K* L; C! W5 H4 |' {
- let fps = 24;5 C9 S4 }" Q0 I7 C3 q' S' O
- da(g);//绘制底图3 {! S0 H: J6 \2 A
- t.upload();
% \& R b- e' v+ }* o4 L8 K - let k = 0;& U: ~2 Z( t4 \8 x( k* ~) x
- let ti = Date.now();/ {8 C& @! ?$ x
- let rt = 0;
' s4 R9 i x8 m* ^, ^0 `& W; r - smooth = (k, v) => {// 平滑变化
f3 c+ t$ j! X* X+ b - if (v > k) return k;1 o+ t# w; ~6 Z) n
- if (k < 0) return 0;
5 K. ]5 o- F* h) p& {) k - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
; o2 @" t6 Z9 b7 ~. J - }
1 ]. e- Q( v: M7 H - run = () => {// 新线程
* C3 b+ g' h( r' D0 b' G - let id = Thread.currentThread().getId();3 V6 O& z) b# g* P- O: T: y+ f
- print("Thread start:" + id);
v9 q- K w9 Y i1 L - while (state.running) {, ?# x' _3 c j% v( _
- try {
8 r, o9 X2 D" x - k += (Date.now() - ti) / 1000 * 0.2;3 I( @# ?/ A0 d! E
- ti = Date.now();
+ b3 E" a5 Y, G5 T - if (k > 1.5) {
2 a6 Q# L8 G6 }: N( J% V9 u - k = 0;
9 y1 _% H& F! O( ^% P9 d - }/ _& W' K, Z# w2 `: Z
- setComp(g, 1);8 e. P/ Y7 S+ |# s2 G2 S' d
- da(g);# i) ?6 W- L: F6 r7 |0 i
- let kk = smooth(1, k);//平滑切换透明度
4 ]& N5 _5 Y9 V6 A7 Q) S( ~! } - setComp(g, kk);: ]2 R$ j3 ^# R5 a7 A9 S4 c
- db(g);
8 W+ y5 \5 X7 e9 Y; P - t.upload();1 |8 E; w O6 k
- ctx.setDebugInfo("rt" ,Date.now() - ti);
5 v8 B# V8 B, ]/ r9 o+ r - ctx.setDebugInfo("k", k);
% c3 J7 }8 ~5 C - ctx.setDebugInfo("sm", kk);8 K5 E2 O- v2 s, i% e9 I4 f
- rt = Date.now() - ti;( |: y; K9 {! ]1 U- k
- Thread.sleep(ck(rt - 1000 / fps));
5 b' | c8 S3 ]2 m - ctx.setDebugInfo("error", 0)
l/ i+ @# z( S% R; ^0 B - } catch (e) {. n* J# m$ S3 Y& k3 ?! B; i
- ctx.setDebugInfo("error", e);
c6 F) D6 u! f8 A - }5 I& Z2 A. K9 C3 ~
- }
5 |) C l, o4 L- ? - print("Thread end:" + id);" E4 }; E$ l$ \, [. S
- }
5 D9 X" t: |, K1 S - let th = new Thread(run, "qiehuan");1 H1 V# K B0 }' o7 ?
- th.start();
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% ]& u3 `9 t1 e; E- function render(ctx, state, entity) {7 t5 F; H4 p0 P6 [0 P, O
- state.f.tick(); G8 h; O9 a7 e ]
- }" |8 Q2 s/ t, ^" Y5 F4 D& z% S
- 0 f- E2 {" ]2 v
- function dispose(ctx, state, entity) {
$ n2 G2 y2 z) ]! i - print("Dispose");* u# j0 I @/ {$ W6 ^4 n9 y
- state.running = false;
% _+ ]& u1 { | m m8 W - state.f.close();
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- 0 l/ u5 Q# }$ \2 K2 \7 [$ n
- function setComp(g, value) {7 d' s3 Z% c& e' S' j2 h
- g.setComposite(AlphaComposite.SrcOver.derive(value));3 V- o1 e- U4 z& U) o
- }
复制代码
' K3 l- }' X( v+ G( }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。& [2 T* R& h. L& J$ y
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& W6 ~+ _2 Q9 z6 \/ m0 B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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