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5 C1 Y# R: m l l5 ^: W, Z$ Z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。
: A! ?" o- I! E, m0 g- importPackage (java.lang);
: h0 V4 D: T* a+ e - importPackage (java.awt);
1 s8 t+ K' V2 I' y" h2 h8 x. o - + m. q' C. R0 f f% j. {
- include(Resources.id("mtrsteamloco:library/code/face.js"));
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* Y l' x X0 B8 ?1 c. B- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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# J$ Y! a! Z5 w+ T# |- function getW(str, font) {/ K/ S* K" z: R) V- f: g3 v
- let frc = Resources.getFontRenderContext();7 v0 b$ u& v% C8 ?! `3 S
- bounds = font.getStringBounds(str, frc);
6 v( v$ C% g: g, A9 p1 T - return Math.ceil(bounds.getWidth());
$ U' \! R' Y* X) J9 D - }
1 K, C/ l6 G# f; M4 v - ' f: \# p" g: z0 b5 _; s
- da = (g) => {//底图绘制6 j, b) a. v3 @; a4 b) r) V
- g.setColor(Color.BLACK);) W& [" o" ?6 z C
- g.fillRect(0, 0, 400, 400);% s* y( J5 g* j
- }
6 h1 v; s: c: o! a' g( R' w9 n - " O% f3 t7 b- R, e. {6 `. ~6 D3 T
- db = (g) => {//上层绘制
$ Q& I' ^" \7 m - g.setColor(Color.WHITE);
5 L" [; k3 r" ?) l! n5 ~( n - g.fillRect(0, 0, 400, 400);
0 Y9 |# ` e# Q( F2 w2 [) O% R; C - g.setColor(Color.RED);
8 Q( r3 W) K2 x+ m - g.setFont(font0);, o. l3 g+ z, t
- let str = "晴纱是男娘";
( P0 m. z7 a! V0 \% T: {( f! w - let ww = 400;
( j3 J$ V1 r4 Y- C' n - let w = getW(str, font0);! I: G4 @( b- F f0 L- s4 X3 y
- g.drawString(str, ww / 2 - w / 2, 200);
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- : k: ^7 V; X1 Y. A+ g8 Z
- const mat = new Matrices();. H( I- V3 s: G6 `% V: h& I9 N y
- mat.translate(0, 0.5, 0);, M: S! i1 P7 T6 s
' W& R o& P' P, t$ D) X- function create(ctx, state, entity) {+ |+ ], X7 k# J) C/ X
- let info = {4 \6 ]5 |/ }6 `" @5 L
- ctx: ctx,& m0 n. f8 [/ V" g
- isTrain: false,: Y. E( H! J3 V0 z& b3 a
- matrices: [mat],
( P, F6 O! z/ h& O - texture: [400, 400],) O- Y) { j* ?7 Y
- model: {1 h# s( A& E; P( x
- renderType: "light",) B+ z! z" [0 r& z
- size: [1, 1],
7 G6 b( c4 x V5 g! _ - uvSize: [1, 1]
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- }
6 k1 S* {) P5 E' [0 Q$ ` - let f = new Face(info);# h: r6 h+ _7 A) ?) m8 b
- state.f = f;
; U9 |* }& s. f1 ]8 C; M- u9 k - 2 I1 R# W( C" ]8 Z5 F; a
- let t = f.texture;$ | V6 I8 g2 H! \ d" V+ U8 ?
- let g = t.graphics;" ~( }) x0 r: q8 Y+ b) D
- state.running = true;) H2 a. h) V4 v/ I$ i7 T! Q8 {
- let fps = 24;/ N- V! }" A4 R3 B& w |) x" y$ G6 w- @
- da(g);//绘制底图( D; |, l) C# r
- t.upload();
+ [7 @6 C' f+ s( g( |6 j6 h3 Z) } - let k = 0;% ]; G9 A9 k! m8 X- h+ q' S# K
- let ti = Date.now();6 d2 o* W& T" Z
- let rt = 0;+ m, M4 d" ?8 F& M& u* \4 U s8 J& k
- smooth = (k, v) => {// 平滑变化
9 ?# {1 c! g: N$ m# g1 w+ Y! T% U - if (v > k) return k;; r A+ H& }0 }3 A8 f5 t' Y1 W, O0 f3 R0 e
- if (k < 0) return 0;
1 ?4 @5 O1 t1 }4 R - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;( N7 @3 U. @/ w G: y% Y/ J; R: c
- }
, x6 S8 \0 N8 B5 B/ t% X6 ~ - run = () => {// 新线程2 B \8 r2 T: [9 V; c7 T1 ?# [) h
- let id = Thread.currentThread().getId();) F" [; [0 Q" O/ m5 r
- print("Thread start:" + id);! M" @; ^- a$ l! e
- while (state.running) {
) |5 {' M" z+ A - try {
) L3 C* y! F7 E - k += (Date.now() - ti) / 1000 * 0.2;" ~% X* O: V0 \0 G; T+ S( E' a
- ti = Date.now();# l. F3 U3 X `7 {! V0 h- t9 s
- if (k > 1.5) {% [- x. R* `1 V5 e
- k = 0;9 {# B7 |. g5 O
- }
/ c% X" z' m& l6 b9 H - setComp(g, 1);3 a% t" L, {( o) d7 v
- da(g);
: }0 F2 R( [4 x* T; ~3 y - let kk = smooth(1, k);//平滑切换透明度6 ^8 M0 U2 J7 ~8 o) `; Q
- setComp(g, kk);
: s. T2 v# k& c: C - db(g);! v1 m+ `& P! J
- t.upload();
4 E/ s) M# s, d4 v1 O- M. K - ctx.setDebugInfo("rt" ,Date.now() - ti);
; h. y7 `2 J! f) |1 n" C - ctx.setDebugInfo("k", k);
& `+ g; C& u# i/ s. A! T x- W& e% B - ctx.setDebugInfo("sm", kk);
; w4 C4 b. Z Y& z4 }- M3 ~ - rt = Date.now() - ti;
! x* f* P& L1 }% H - Thread.sleep(ck(rt - 1000 / fps));: ~% o2 m0 `1 ~) L
- ctx.setDebugInfo("error", 0)) M6 _. U9 x$ q) X
- } catch (e) {
+ s) W+ G, O) b1 c5 D" P1 i - ctx.setDebugInfo("error", e);6 |) a% w0 a$ e6 Q
- }9 X: f& a' j1 T3 k& F* T. O
- }
3 S3 ~, S2 t2 Z" B - print("Thread end:" + id);
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- let th = new Thread(run, "qiehuan");
. F+ l. b, l9 H G9 {9 K/ e - th.start();6 E S6 N+ e: Z& [
- }! K* p( J& F* H" j9 k5 R. X
- ' g; B" y4 O: X- j( J" a! f
- function render(ctx, state, entity) {
8 b# x4 p+ [# ^7 T" P - state.f.tick();
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- - q- K1 }3 x: }: p% K9 x* }3 z( g
- function dispose(ctx, state, entity) {. f3 Q! V; F, K. Z: y5 [: _* J
- print("Dispose");
5 b9 [9 v3 X* F1 ^ - state.running = false;
6 m& y W2 {5 w" L: e5 G8 X% U - state.f.close();* r' k& L7 l- d* V
- }
; n, Y% A, K% _9 n6 @; P& O7 v9 j - , S! @6 i) a5 W0 U- N- B3 a
- function setComp(g, value) {
) t& r3 s, N' J - g.setComposite(AlphaComposite.SrcOver.derive(value));
/ \" x) ~" j$ X- F - }
复制代码 - O B) n3 u/ x/ R* p0 Y% 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。
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2 f0 c2 }2 [4 R2 K# i% y; Y2 E顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)$ D% G) [# r1 k! ?5 ~
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