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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。
6 K1 H' O0 [7 o& y- importPackage (java.lang);
& s! \' W( a5 a+ ]6 ~) \5 k - importPackage (java.awt);; c. i1 h" \- ?5 k0 m0 Q+ n3 s9 A
; `3 f1 Z# I$ n6 _- include(Resources.id("mtrsteamloco:library/code/face.js"));8 A1 D9 r6 W$ S+ y; l* {
. T6 o2 ?9 H- L8 ], \- w- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
. ~0 F" X- K7 o- h
; r2 t7 ^6 ~5 T( l- function getW(str, font) {
! J/ Y) ]# f9 K' t& {7 { - let frc = Resources.getFontRenderContext();
9 g$ A2 J8 d) B$ `, ?" @6 f$ K - bounds = font.getStringBounds(str, frc);
m3 N3 m5 E3 R3 J0 y# N - return Math.ceil(bounds.getWidth());- B3 F" |7 X+ P* H- l) v
- }; |5 e5 M9 `4 }! K" B
- 8 _/ A" V4 X" G A+ A/ K" I3 S. [
- da = (g) => {//底图绘制9 _: j4 Y& {- a* D1 Z: J! |. Z# g6 ]
- g.setColor(Color.BLACK);+ l7 @8 {5 ~ z$ |
- g.fillRect(0, 0, 400, 400);- y. z+ {7 P' L) W, `, h" a }
- }
" o# I1 Z- P8 x+ z/ W8 o9 Z
! g$ g7 [. r3 d/ u$ t- y* N& Z0 z6 h& ~- db = (g) => {//上层绘制
& T }4 Z d+ o - g.setColor(Color.WHITE);& d& E+ j9 S* `# f# r( {
- g.fillRect(0, 0, 400, 400);5 {: {) K4 _& a8 W9 m0 U c
- g.setColor(Color.RED);
$ I+ m1 h' `6 K1 h - g.setFont(font0);4 d5 f3 `5 a/ U9 ?0 b1 `
- let str = "晴纱是男娘";
" E0 p J( j8 a5 { - let ww = 400;, o+ M3 u" K2 R
- let w = getW(str, font0);7 V# U9 I* a8 ]/ K
- g.drawString(str, ww / 2 - w / 2, 200);
0 ?' C0 O/ I1 |- d3 v9 U* x5 G - }
, z- `( J+ T3 @5 x$ k - ; C E/ l) l. |/ T6 |
- const mat = new Matrices();- d, L' r) W9 |) t9 I' R
- mat.translate(0, 0.5, 0);
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- function create(ctx, state, entity) {
" O4 d8 k9 x0 s - let info = {
2 Y% u5 {; V8 h: Y+ _ - ctx: ctx,
: i2 u6 x9 Y0 c3 ~ - isTrain: false,
' e' |7 w9 b) a4 a - matrices: [mat],. m3 ]+ |8 p1 \9 V p0 `! A6 g
- texture: [400, 400],
' ~' f7 B H$ Y/ [. A& F0 ]2 U Q8 t - model: {0 s1 G5 ~& X' o
- renderType: "light",
+ Y$ p! d: q3 t4 Z# r" V: s* s - size: [1, 1],9 o0 Z7 M, }7 z* {3 ]4 V1 u
- uvSize: [1, 1]
/ G* q: ^' D7 Y: i4 | - }0 o$ C) Q# x4 K+ b$ P; _
- }8 {7 Q& l; Z! K7 k/ r9 f9 E
- let f = new Face(info);- H" V8 `# l' \& Q* K
- state.f = f;$ B2 ~# A9 L* I \, o4 @
- , a1 O; R8 ~; s8 Q0 ?- Z
- let t = f.texture;
8 ~7 N) u0 ~ E& Q" V - let g = t.graphics;: L! b5 E2 v i6 I
- state.running = true;$ g: l% f- X. n+ S2 z
- let fps = 24;4 K! E' _4 ~& e( m$ n0 d
- da(g);//绘制底图% V/ _/ D- }, P, A4 }
- t.upload();
# x ]1 n. r0 F! C& @ _ - let k = 0;/ z" G/ x2 b5 B0 @" S( w" L) a
- let ti = Date.now();4 l# L! r# d& F& \
- let rt = 0;+ D" d2 B+ A3 g% y3 b& G P
- smooth = (k, v) => {// 平滑变化% K# G1 n! j# j
- if (v > k) return k;- z, M3 o6 o9 h% `. \8 e& ?
- if (k < 0) return 0;
! i5 t0 b" Z; F$ k - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;1 z. l; p/ Y; j% B* {8 W: c! s( D
- }
( D3 Y1 |) e5 t1 K3 q+ V - run = () => {// 新线程
+ D" m, ] D% z# ~! a7 L - let id = Thread.currentThread().getId();/ H, m6 Q6 u- b1 L
- print("Thread start:" + id);+ D0 p1 Z" \, W5 e& k7 c& B* Z
- while (state.running) {
: j* @( {! k$ C& I6 g - try {
: x( j5 Y- u1 ` - k += (Date.now() - ti) / 1000 * 0.2;8 k3 T; M; n0 A: n8 ]
- ti = Date.now();
o6 O1 {/ h8 k( H& g* b, A# ` - if (k > 1.5) {
. V' P* Z& r) Q, t* B1 P - k = 0;- O5 _9 R5 `3 W
- }. U) U+ T4 u3 q( {: E
- setComp(g, 1);8 X- A0 l* w$ l" e$ {% Q) q* M
- da(g);
/ M/ k2 r# \( q - let kk = smooth(1, k);//平滑切换透明度9 u" C/ f2 A+ P1 U N9 k" Y
- setComp(g, kk);; J0 O- E* f; s7 X# r: l
- db(g);
7 u6 o$ b2 G% B5 @0 R - t.upload();
* N9 n1 [8 W7 b& w2 t4 h. P - ctx.setDebugInfo("rt" ,Date.now() - ti);
9 H7 G* p; A/ R& d* }; N# w - ctx.setDebugInfo("k", k);
/ S8 e, W1 W7 \ - ctx.setDebugInfo("sm", kk);
; |6 N u$ d8 k/ {6 D - rt = Date.now() - ti;
4 `8 d9 b$ s- ~9 L2 L7 i6 X% q, S4 ^. Y - Thread.sleep(ck(rt - 1000 / fps));
: K" R6 A, u) c3 j' F8 F4 r2 `5 b - ctx.setDebugInfo("error", 0)- p( ?8 b% v- E5 j6 l7 o. y
- } catch (e) {5 f" ?, x: n2 `. j
- ctx.setDebugInfo("error", e);" B5 M0 U7 C( Z6 ?! h" V6 u
- }
/ t" N% h( R( E4 _7 X2 I+ M - }
8 I D" `% Q3 K4 ^& r2 y - print("Thread end:" + id);: Q/ W# b- y9 b+ m8 E
- }
& P9 c T/ o8 J: Q7 P; x' A7 \ - let th = new Thread(run, "qiehuan");
- [0 C8 v# {1 {8 R# e2 M. P - th.start();2 ? g* P7 u2 ^' n) N
- }3 k% v1 x, ^5 E( J8 \( y9 X
- , U8 E( m0 Z" R+ B' y* P, m% p1 ]1 l
- function render(ctx, state, entity) {
2 e; Z. D( X# d2 p! Z - state.f.tick();
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- : d V6 s3 P# J; V; ~5 z, m- e
- function dispose(ctx, state, entity) {5 L$ ]! \% I8 y
- print("Dispose");& B' N( e) f* v) I
- state.running = false; G% @& e: C4 Z# R( X7 V
- state.f.close();
) t9 Y' k: H, \) J, ~# E - }
- G: D+ [6 ^& i: y) d& j - 6 X7 K) f/ v- H3 t8 @
- function setComp(g, value) {# y b8 T+ x# V! a
- g.setComposite(AlphaComposite.SrcOver.derive(value));( t+ m6 O1 z3 q( j7 ~2 F
- }
复制代码 5 Z$ Y" D5 x, c% \! n; t
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。
9 D, s- f% y3 R$ u( K( Y% t' q; P. n% v/ I3 H o W# ~2 |
: v) O7 H& x) I' Z: f9 J/ 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)
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