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! a( ~* b! c5 S/ U Z& z4 M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。, j+ T' j D$ D' z& A3 X
- importPackage (java.lang);
+ a" Q! ?0 Q# _9 m - importPackage (java.awt);
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- include(Resources.id("mtrsteamloco:library/code/face.js"));) i" b, I: D; L. C" u/ H$ u
2 _% z* w6 N3 U- u# z3 ^- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80); K0 _; V6 N- @7 ~
/ b% ]' K; ]& H1 Q {: k9 J6 o6 j- R- function getW(str, font) {# `4 S, ~* k$ Y: ^3 Y" `" e
- let frc = Resources.getFontRenderContext();, u9 R& R" \& e$ H& S: R
- bounds = font.getStringBounds(str, frc);! j1 P+ P0 `, S4 F1 m
- return Math.ceil(bounds.getWidth());- H( i+ g6 u4 H4 a ^ k
- }1 U, Z4 W: j8 t1 L
8 k- L" m8 ~0 \, l$ e# N8 Y/ d3 M U- da = (g) => {//底图绘制. L- i! U& c! e0 c% Z
- g.setColor(Color.BLACK);' B! M1 Q; n- d) ]+ W7 o4 Y1 O2 Y
- g.fillRect(0, 0, 400, 400);
0 S" D' m q: h4 A% ? - }
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- db = (g) => {//上层绘制
7 W( G( p2 k7 p - g.setColor(Color.WHITE);2 X9 p* J6 @& }9 h5 ^* T$ f
- g.fillRect(0, 0, 400, 400);
5 p. B7 s( \: @ - g.setColor(Color.RED);
( @4 ^ S3 g% D! i - g.setFont(font0);
/ F& J- }% f S: r- E1 u( k e - let str = "晴纱是男娘";/ I1 i3 B- V- Z; K: `% w
- let ww = 400;+ g' F6 i. |/ _7 u+ Q7 j) x( H) W
- let w = getW(str, font0);9 V3 U& r0 S7 P
- g.drawString(str, ww / 2 - w / 2, 200);
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2 s9 j- [' ^5 A# h* r- const mat = new Matrices();8 @0 H0 ~. T6 a6 @7 ^: y* K
- mat.translate(0, 0.5, 0);
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- function create(ctx, state, entity) {5 k1 U! j b5 |
- let info = {- Y/ f* E, D$ ]& _2 e r; {' P
- ctx: ctx,
6 y& l# U- f0 z6 W2 t4 [( H" Y5 J& i - isTrain: false,
) ^" D) L2 R+ P9 ] - matrices: [mat],
6 _3 G7 _8 ^# e/ C4 K4 d: k- m - texture: [400, 400],% @7 P+ V; G+ H$ p k8 ?& W K
- model: {- K0 [0 S! e9 K8 B2 W' j2 z
- renderType: "light",3 Z8 q# v( F& c ]$ z
- size: [1, 1],' ^0 J8 g+ z" }+ }
- uvSize: [1, 1]
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- }9 Y) e) q5 a. t& i: ~& U8 ~% K6 w
- let f = new Face(info);
`7 C* [! L/ D - state.f = f;
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- let t = f.texture;
" g6 p2 }( ?2 F/ B - let g = t.graphics;
8 M3 f) X' y9 V - state.running = true;
' V6 d4 O9 H$ U0 ~ - let fps = 24;7 `: s9 d4 X+ u* @* \
- da(g);//绘制底图
/ d5 w9 {% z2 N6 W$ k. ~" @: h$ h - t.upload();
3 [6 l6 W T- L0 v ~" q: M, V) H - let k = 0;6 e: ?* `/ z$ T( U! S
- let ti = Date.now();) b- T( ]! C4 j: m# v- [7 |2 ^ A- |
- let rt = 0;9 [: M H) ~) \/ |6 ~
- smooth = (k, v) => {// 平滑变化- |4 `9 M2 k5 E( C+ y1 p. \
- if (v > k) return k;7 N0 f& P9 Z$ h. m; g: O
- if (k < 0) return 0;
7 g0 m7 E( {9 X' m3 m - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;5 b7 j H( k, b" m
- }& r, m7 U7 t& D7 s
- run = () => {// 新线程
5 e# J5 H3 \1 ~/ {. U8 l& W" u1 a - let id = Thread.currentThread().getId();! W4 }' D& n/ s& k- ]- h
- print("Thread start:" + id);
2 H* C% M% O! c$ }8 @; a- } - while (state.running) {
5 Y+ S8 S% p$ O4 y2 }- V - try {
- ?* Z$ z# n0 e8 ~ - k += (Date.now() - ti) / 1000 * 0.2;7 X9 L0 C7 g7 l1 J! T, w. ?
- ti = Date.now();
) M3 Q% W% N) Z1 D - if (k > 1.5) {
h+ f9 ~0 K% Z5 ?4 a- f2 q - k = 0;
( a; i: s1 m& j: {! \ ~ - }
/ Z4 e4 U3 i7 E+ y - setComp(g, 1);
2 Y w7 ?6 S- ^5 p' ?; \ - da(g);
( q1 y- y* \3 Q a8 o" a- E - let kk = smooth(1, k);//平滑切换透明度6 z) {! l/ j1 z0 r: c8 I
- setComp(g, kk);
4 ~2 A6 e6 C/ l - db(g);! {2 q" k5 G8 J, a6 b7 V
- t.upload();. M+ M+ `) Z# D3 f1 h) ~
- ctx.setDebugInfo("rt" ,Date.now() - ti);6 r& f9 G0 k) C- q, o: ^7 N8 y! s
- ctx.setDebugInfo("k", k);
8 ~9 E" {2 q+ I7 ] - ctx.setDebugInfo("sm", kk);
; w; k0 a6 D, J4 `# P - rt = Date.now() - ti;
: P0 a5 m. |$ d" o# i1 Z* X - Thread.sleep(ck(rt - 1000 / fps));
7 w6 M: i) t& U2 y8 G9 D - ctx.setDebugInfo("error", 0)2 Q( l5 ^9 f) j+ @7 \4 O
- } catch (e) {' o7 {7 c6 e+ P# Z% Z* G- L3 _
- ctx.setDebugInfo("error", e);
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- }7 U' D9 a% l) |1 Y
- print("Thread end:" + id);) b( N: t6 ?, l; i/ t; M( m! h
- }
# L9 Y% N) g- c/ S3 m& {- j, D - let th = new Thread(run, "qiehuan");* ^! h3 X" L' i0 C4 w
- th.start();4 e' m! j p4 q- }6 }, z
- }/ X' G. F" d4 s2 B$ [$ a0 p
- ! o$ D4 w# ~( q- F: D1 b/ m) F
- function render(ctx, state, entity) {
- {6 U$ Z" Y# D - state.f.tick();7 a. ~9 l$ w- k) H, Z: F0 e1 T% ?' u4 \) V B
- }( C A, @; m$ V: }# o; t
- 6 J3 l# s7 c0 x) }, u
- function dispose(ctx, state, entity) {
0 M* D1 i6 R& w4 M' Y+ B7 G - print("Dispose");
& W, ^* N7 L% A7 T% R" I5 I0 [ - state.running = false;; P/ g q) Y8 T$ Z# ]. ?* d/ R
- state.f.close();' W" [* P. I1 A# c' l
- }
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- function setComp(g, value) {: W8 P3 J" \# u; y9 s
- g.setComposite(AlphaComposite.SrcOver.derive(value));3 r1 x# a* y6 Q( N) ]
- }
复制代码
3 ~3 b1 p# e6 Y$ r. d0 U4 e4 P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。! ~/ o T9 a6 j- j% X
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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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