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# }" H* C" k F4 D: ^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。4 y. v! _# I6 l
- importPackage (java.lang);, R" f% @" b0 ?; m3 G( l. X: M2 N
- importPackage (java.awt);+ W' x0 [" ?; x" }+ j% ~' T' }
+ q7 F. u* M7 }9 O* T( r$ l- include(Resources.id("mtrsteamloco:library/code/face.js"));
# C6 O6 `0 d4 J2 S0 t$ y8 r - * B% Y* G! s6 d/ c7 E. I( \
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
/ _8 Z: X* U3 {& a0 `" V# c. E8 W - 5 K! H) \# [' [% {. M3 y
- function getW(str, font) {
: u( w1 g# G9 u - let frc = Resources.getFontRenderContext();
! h6 c) Q8 x; f3 k' q - bounds = font.getStringBounds(str, frc);
# X. S5 p h: [: f - return Math.ceil(bounds.getWidth());7 T" k: j0 t+ K4 \9 f
- }$ |% r! n1 b. h5 w4 U
- X7 M0 b( J* K9 W; e4 h
- da = (g) => {//底图绘制! r# T9 x. u8 z8 A t7 ~
- g.setColor(Color.BLACK);' L9 z* e6 p) m# F3 M
- g.fillRect(0, 0, 400, 400);
! |: m- ^* z( F4 q) @! g0 ?% l - }8 V/ }( m7 {9 `8 ^
) U2 a$ {3 ~& c4 n8 S% j- db = (g) => {//上层绘制
5 Y6 V/ X1 ~. i3 E6 u. M+ o) r - g.setColor(Color.WHITE);
/ M, ^5 j6 c% A" Q - g.fillRect(0, 0, 400, 400);4 w' G0 `2 y, x' t
- g.setColor(Color.RED);# ?# G: I6 f. X' S- I
- g.setFont(font0);
) U6 u4 y9 p$ V% Q, M( K - let str = "晴纱是男娘";+ Q3 W k$ }2 z V8 {# A1 n0 V# e8 ]
- let ww = 400;0 i) v! U- `' M8 c$ S3 F
- let w = getW(str, font0);
7 P( s; S. K7 j, V3 h+ p - g.drawString(str, ww / 2 - w / 2, 200);7 {# v, H3 @# d7 Z8 R
- }
- u6 g0 U+ D- J* W0 g" l1 Q. M4 {! R - 8 l9 Q1 B: E1 e- @' J; C
- const mat = new Matrices();% H( u, C9 a G' |' R6 K7 n, ?1 T
- mat.translate(0, 0.5, 0);' W0 H0 o$ @ c3 ?' F a4 p
; L$ l( N! h" q7 m( O4 P" ^- function create(ctx, state, entity) {
) m t, i# j) f& f# e w" }& l - let info = {
& ^1 @; T: `; P, j2 `2 o0 q* c1 L - ctx: ctx,
9 c/ n# X1 d( K- S' k/ P* r - isTrain: false,7 N3 N1 Q* j ~; d2 y6 Y8 t* r, t
- matrices: [mat],
4 I/ z& B+ n" V3 r% J2 [ - texture: [400, 400],
* `2 d2 U* j- c/ R' \, c - model: {+ n- |8 q5 @+ M" P2 l5 [" E
- renderType: "light"," Z- ]: `0 O: l
- size: [1, 1],
$ p9 |& _2 y7 Y" c. Y - uvSize: [1, 1]
, n" b6 M6 f1 \) B J8 G; R - }
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- let f = new Face(info);9 B, N* z0 {$ y+ T; o
- state.f = f;, p3 o8 A: h8 f5 ]" A# |, O, [
p( r6 n2 e- z! R T- let t = f.texture;6 u7 A* w! D- ^7 e; I0 w' ^
- let g = t.graphics;. x7 ~) {! m Z K' ?, c
- state.running = true;) J5 B+ t/ G: K/ l0 N
- let fps = 24;
7 f( }8 L3 N5 B - da(g);//绘制底图1 a# q6 w! U, P0 X* l- U
- t.upload();& g$ Z+ U" K7 M" V) _% q
- let k = 0;8 e2 @1 f3 V6 U( J! g
- let ti = Date.now();/ }" O! Q4 d% A; V: S) ~7 L7 k: Q
- let rt = 0;3 K# \) k5 y( w! D b7 L. O4 L
- smooth = (k, v) => {// 平滑变化, U. O( V, U" ~7 t
- if (v > k) return k;. t& b3 a' o( k& T
- if (k < 0) return 0;5 M" w3 r- p4 X& X T9 ^: P
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;6 ~" r* W8 n5 D2 o- r0 K, A( W
- }0 ^: c U9 I0 x) h& w% E. ^
- run = () => {// 新线程# q4 r( ~9 x4 n* M6 z( {4 V
- let id = Thread.currentThread().getId();
* f, Y6 g1 Q) y& ^; E" m8 P/ T - print("Thread start:" + id);2 L) P- P0 z5 a1 d4 Y+ S
- while (state.running) {9 B Y! r, `0 ]7 z* N: H
- try {
7 L; e2 A3 n/ [5 [& ^4 T; m - k += (Date.now() - ti) / 1000 * 0.2;0 p# {7 G$ R8 }" a6 l
- ti = Date.now();
: w" L0 Z$ Q q9 _/ P1 [ z - if (k > 1.5) {
' u- t) b3 \* d& U6 F4 k! P - k = 0;! P7 Z ?2 N# h6 e. B4 @. p0 a
- }
. |) @1 ?5 e# @7 f. ~ - setComp(g, 1);/ w, {+ G8 l5 s1 m9 T a; [
- da(g);' e9 F% U6 Q( @/ \2 v @! Y3 b$ a
- let kk = smooth(1, k);//平滑切换透明度
B0 O# M3 ^! l8 y d* m& s; j - setComp(g, kk);
. L3 k5 W6 F& H - db(g);8 a8 t; t/ ^0 W. D& t: g
- t.upload();# X9 T. a6 q3 o: I8 e" D1 d
- ctx.setDebugInfo("rt" ,Date.now() - ti);( i3 M! J |% e# B+ @
- ctx.setDebugInfo("k", k);
4 T3 ~, b9 w6 x+ q. t, o# l# e - ctx.setDebugInfo("sm", kk);
1 i! Q1 b6 o) [ - rt = Date.now() - ti;# |. t3 H* l$ a: w4 \
- Thread.sleep(ck(rt - 1000 / fps));( \5 ?& i: n1 g8 J( P/ b0 {, f( X3 ?5 M( C
- ctx.setDebugInfo("error", 0)
. Q4 T1 |, T6 R2 x# W3 h - } catch (e) {; _1 h9 x8 U9 j9 ~+ f$ N
- ctx.setDebugInfo("error", e);
# L; y. R; M4 C: d- y( ? - }. k% z* O7 { ^
- }
- E. E. m5 _. l6 ^ - print("Thread end:" + id);
# Y Y) W; p5 ~# g/ m! m* a6 T7 c - }
0 N) U* B, J% u$ _ - let th = new Thread(run, "qiehuan");
, F. K, @, q& |+ R d- w" X - th.start();
8 R. Z9 d" f0 E. t2 h% D - }
# z; S9 X. x8 U3 @) k! y; ~3 L - * W3 I, x* V& { q& Y5 {6 t
- function render(ctx, state, entity) {1 L4 u/ H7 m" c
- state.f.tick();
- u- o9 m" k: W8 L- | - }
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- function dispose(ctx, state, entity) {8 T. V. G4 B' U f7 R2 P" [
- print("Dispose");
9 z/ t* l$ c- x) R. D2 j9 R - state.running = false;7 u4 ^* r3 V# t6 a0 O. |
- state.f.close();! j; u8 a/ y3 J" P% h) `
- }
% b& r0 \" D+ c% O1 R1 ]. t - 9 ^9 ?! [6 x$ A* k. U7 E8 m% X
- function setComp(g, value) {2 D$ x9 V6 h( ?2 f
- g.setComposite(AlphaComposite.SrcOver.derive(value));* C7 O- q, {8 q
- }
复制代码 5 G* O: ^% y* K# K/ T, n- [
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 _( |$ i: f1 k" p- h! Z% l
5 x6 M7 g# O/ _$ r# t
' s. R5 x, k5 G% Q% n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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