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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。
% m6 x" g9 b% s6 D+ F- importPackage (java.lang);
+ I) ~! u. X7 o3 d3 T* ` - importPackage (java.awt);, E# i+ s$ X/ ^, w2 A; l
- ; N- |: w7 W7 D0 M3 {
- include(Resources.id("mtrsteamloco:library/code/face.js"));0 u% g" M3 ~# o d8 S+ C1 B3 B; I6 s Q
; n3 \: d I% N% n9 L) F8 `- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
7 `) ^- o+ `. _ f
: B. K4 D( W! L- function getW(str, font) {8 }5 V H- f6 p9 G( z r2 b: S$ ]
- let frc = Resources.getFontRenderContext();
: h- B7 _" n+ J& l - bounds = font.getStringBounds(str, frc);3 }3 `3 T* |% O( \% s
- return Math.ceil(bounds.getWidth());# Q, \5 I w5 ]. S) C$ q) t4 u8 J
- }6 c J( I, K8 \
2 i# I# M! g! T4 K& k- da = (g) => {//底图绘制$ P i( Y5 o0 `' c0 s
- g.setColor(Color.BLACK);
, ?0 V6 G; M7 X0 o3 ^5 M" e* T - g.fillRect(0, 0, 400, 400);
3 |) z, z6 v& S" J) n - }
* F4 p) s5 R0 A, a - : @2 [" }, o I- T
- db = (g) => {//上层绘制 k; K6 h/ s) g; z2 V0 u7 m( t
- g.setColor(Color.WHITE);; j! K, ?5 {! _4 }2 B# N* ]
- g.fillRect(0, 0, 400, 400);
. W* x7 Q+ v9 n$ l2 T: w1 N [6 z) W - g.setColor(Color.RED);
# n8 L( P! q+ q G& \$ q - g.setFont(font0);
+ \9 W- N* p8 [3 I+ {! W - let str = "晴纱是男娘";; s: @6 F) r; g- X
- let ww = 400;
& [- H) P; {) j( C$ {! _- P3 P - let w = getW(str, font0);
: ?7 ~" E1 W* `4 d' R2 c! }: n- [$ u - g.drawString(str, ww / 2 - w / 2, 200);; t! r$ B! g- O' V- |
- }
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- const mat = new Matrices();9 y. i' v% I5 D% e
- mat.translate(0, 0.5, 0);
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- function create(ctx, state, entity) {9 [% {5 S* X6 G5 ]# X7 Q
- let info = {! r6 e* h5 V3 B- e2 g
- ctx: ctx,- r% L, _2 V0 K
- isTrain: false,
$ b {0 t/ U# t7 u - matrices: [mat], f0 D$ n1 J; I
- texture: [400, 400],3 [- V/ I6 M; Q$ @
- model: {
& _+ `0 [) o+ [: S - renderType: "light",7 [2 ~) v! A; H
- size: [1, 1],
8 @7 K. P, k0 a- ^- h - uvSize: [1, 1]& A1 T2 q2 j3 N
- }
4 }; K, c6 b* o# C5 `' ^9 ` - }
/ H* {2 N2 f! c4 } - let f = new Face(info);
. v5 `" I \$ T0 W5 ` - state.f = f;
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* y/ d" h: n$ V# @# ]- let t = f.texture;- m, |( Z( O. f" f8 z0 t3 B+ B
- let g = t.graphics;/ E* N" K$ M( [2 ^/ d" S7 j
- state.running = true;3 J' S4 G) h6 O+ W
- let fps = 24;
: ]4 ?6 R( _* P6 V" R - da(g);//绘制底图
: P" `5 m' I2 G - t.upload();
" g0 F' r4 J$ x7 w: S* l - let k = 0;
4 G U+ I. S7 l4 R - let ti = Date.now();' Z# }& t$ l( k" Z! w' z/ |
- let rt = 0;: |8 J H- S% G
- smooth = (k, v) => {// 平滑变化6 r! V' n/ d: A: C% a
- if (v > k) return k;
, C2 O4 d7 |3 s7 I. @ P - if (k < 0) return 0;
& q$ C3 j7 Q, S+ G" d& r- t - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;' X, H$ l, y: [8 V9 c1 g
- }
: B0 D" q- M# l7 X - run = () => {// 新线程
0 O" ~- {+ Q* \* t2 P# _4 l6 j: `' m - let id = Thread.currentThread().getId();/ g; u/ j, \6 V5 \2 @2 @
- print("Thread start:" + id);' z' v6 {2 S$ s6 v
- while (state.running) {
; |, G, I9 g& f$ ~5 i0 [2 B# | - try {
8 w& t! i* z( G/ O- g. T - k += (Date.now() - ti) / 1000 * 0.2;
% w9 o4 z7 ]) {& J6 I( q2 j) S5 x - ti = Date.now();
& v1 X; i' h3 |8 i8 k. | - if (k > 1.5) {
) y1 p! T1 F' @$ A9 A6 n( u3 d - k = 0;' p9 N) X- z: p: d7 O/ A1 l
- }. L$ @1 [( w! G
- setComp(g, 1);. F; m$ @, h7 E0 o# c- x7 ]$ p/ m
- da(g);3 |/ g n' U$ X7 B9 q3 S7 B
- let kk = smooth(1, k);//平滑切换透明度
6 G. z+ u+ M6 t2 p5 {, u$ \- @2 \ - setComp(g, kk);: c. E- E, r) c7 Z
- db(g);2 J, q2 @- R/ }* \: j
- t.upload();: m) V+ R; X7 `0 X, h$ B5 k% n! l
- ctx.setDebugInfo("rt" ,Date.now() - ti);% ~9 a# w0 o* G$ p
- ctx.setDebugInfo("k", k);% k/ a6 G. `3 @* k3 l8 }& [( B
- ctx.setDebugInfo("sm", kk);" ?, S" c- W) S8 \
- rt = Date.now() - ti;
; r& A Y7 I8 V9 U7 R$ k4 j - Thread.sleep(ck(rt - 1000 / fps));$ ]3 \4 @9 P& Y% x& |+ R$ Q# W( \
- ctx.setDebugInfo("error", 0)
6 |! e1 t: k0 s& z1 z - } catch (e) {4 F) V/ V, Z0 b+ m& C+ y* P- C; @2 ~
- ctx.setDebugInfo("error", e);7 R9 E! H; S9 C1 F% v
- }* l8 x* l! f. n7 V/ N' X
- }7 W, g0 u& d& A' }9 U" D6 [/ G- S$ g
- print("Thread end:" + id);. X; P9 u ?% m* Z
- }
4 u2 ^5 E6 _3 Q8 N# L0 } - let th = new Thread(run, "qiehuan");
6 @- z- t3 l, ~. Y5 r( G - th.start();. B/ q: M6 b& P m" k
- }9 m$ E _, [9 U" U+ E1 e& ^0 z& w
; ^" U- {; z8 s; v( X% A, `9 G! G) e+ _- function render(ctx, state, entity) {
( G1 H3 H; S& z u: B - state.f.tick();
. H" l$ T' ^2 M4 O - }
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7 m* X* V% c9 u& e- function dispose(ctx, state, entity) {$ }2 P" u; `) B8 Z8 H a
- print("Dispose");3 A: Y) a" U& J! o) ?0 V: q
- state.running = false;
4 [- w0 G$ {. s* H- p - state.f.close();1 i( C5 L& Y# R w: K2 a
- }
) H, b' V9 C. G2 f/ T+ u T - 0 B+ e+ b* q; k! r
- function setComp(g, value) {: `7 [9 [4 E) k
- g.setComposite(AlphaComposite.SrcOver.derive(value));
" w7 t4 x' O. v% @; l4 I8 C - }
复制代码 1 u9 P4 [; X6 `
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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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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