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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 T/ L f9 q. A- importPackage (java.lang);* v7 n5 z: ]; X- l& M7 Y
- importPackage (java.awt);4 b8 E; B+ b0 c- b6 Z/ {% S
- * g6 i n- ~9 v! k* a$ I& T
- include(Resources.id("mtrsteamloco:library/code/face.js"));
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- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);2 r& k Q* j5 Q% |- }$ k
* p/ i7 K; q1 I( p- function getW(str, font) {' D: e' E) `) g _, `7 v$ P! v+ ~/ P
- let frc = Resources.getFontRenderContext();! j+ y9 x7 v4 _8 m( c! B# l
- bounds = font.getStringBounds(str, frc);/ Z) s% o1 b; @3 G! X
- return Math.ceil(bounds.getWidth());* I5 `9 `1 N) Y
- }5 s q) t0 k' T& L* U: Q
. z8 p% u& @ y- da = (g) => {//底图绘制) Q0 i: P n5 @- n/ T
- g.setColor(Color.BLACK);( u( K3 c- y# |( H( E0 B0 k
- g.fillRect(0, 0, 400, 400);
* c0 X% D. ^$ S; k- W$ f& q - }" z) R# r5 B) L, r: ]
- ' p) N' W! V1 q/ N, g+ v
- db = (g) => {//上层绘制
; d+ Z) G+ H3 K0 d' M/ I: f - g.setColor(Color.WHITE);# F2 e& T2 v6 Y5 ^6 |6 _
- g.fillRect(0, 0, 400, 400);; z8 U6 Y% T# C! k! O8 L' `
- g.setColor(Color.RED);/ }$ `1 A" C$ q+ F) S
- g.setFont(font0);1 R- o- M- h" }8 G9 w1 n
- let str = "晴纱是男娘";
9 Q8 y: `& a: d: O - let ww = 400;
# l$ j& X9 a: ~4 _ - let w = getW(str, font0);
. i% _ k3 u% f( v - g.drawString(str, ww / 2 - w / 2, 200); K1 Z: \9 R' }. j
- }
5 |# q- A$ ^9 S( O& F; u; e0 Y - & u' \$ B$ B3 G+ H: N* h7 e1 [
- const mat = new Matrices();
/ F. `/ _. c p0 O4 ^ - mat.translate(0, 0.5, 0);
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- R0 w- S1 g& c- function create(ctx, state, entity) {
6 V1 u1 {4 Y4 T - let info = {
4 P& u. t2 g3 ]; B3 S, y# Y - ctx: ctx,; i$ J2 O. \; f3 o
- isTrain: false,
" v/ P8 K! P+ k3 ]& H - matrices: [mat],, p$ g. e+ v9 j) B
- texture: [400, 400],5 F6 \1 ^+ Q! V' O2 k+ Q
- model: {; q4 o7 J3 A- V+ m* e' J' x1 J
- renderType: "light",
( b. o4 d1 h# M6 U& o - size: [1, 1],
/ |6 A1 k% c/ K - uvSize: [1, 1]* ?8 S/ G2 Z& `: Y/ w- {9 P
- }/ S0 c# Z" |8 M3 a
- }) ?# Q/ {% J8 ^
- let f = new Face(info);, P) ~# f4 L9 k! \; I
- state.f = f;% V6 v* t0 x: ~. Z7 _
- 8 t) z: P K( m& D' I. z
- let t = f.texture;
+ A1 B6 W& I5 F9 d/ t4 D0 F% j2 _ - let g = t.graphics;
8 @/ b6 Y: O: ?/ c5 X3 {6 y - state.running = true;
' c: ~1 r8 T( a6 J+ q# U9 z! Q3 D - let fps = 24;( x; L' b6 L) r% d# X0 M( _6 m+ b
- da(g);//绘制底图
0 H* [+ V# G! q$ d) \ - t.upload();
. H5 V8 c, s5 | m" g0 ]1 z - let k = 0;! h4 c' T5 e; Z8 b% S( i
- let ti = Date.now();7 r# R5 |' m2 D' b4 k
- let rt = 0;, X0 U; ]" H4 M
- smooth = (k, v) => {// 平滑变化 a- |! J8 l* q3 s( L/ n3 }
- if (v > k) return k;
2 b1 r' R0 M2 Q4 I3 W, h - if (k < 0) return 0;3 t0 a4 J! m' u. e! R: h
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
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- run = () => {// 新线程6 \+ w! L m2 Z
- let id = Thread.currentThread().getId();& I9 A' c0 R. l/ K! C8 O" F! m
- print("Thread start:" + id);
7 m4 h) K" Q' `% E4 A - while (state.running) {
; k1 P6 _" v2 c3 q5 o" @ d* d' D- E3 d - try {
( x4 V; x, ~) ]) z, Y, z - k += (Date.now() - ti) / 1000 * 0.2;
- Y4 M5 ^6 O" W7 [) b& \ - ti = Date.now();
% X) G. L1 A* d# Z% D - if (k > 1.5) {9 S4 y0 j2 t2 z+ E; r9 _6 p1 s
- k = 0;
( Y1 X: P1 ?+ K9 S ? - }
$ k6 d3 Q% C: o0 R6 o - setComp(g, 1);
. q: g( C. l0 a% r. z0 a! `3 W. L2 ^2 { - da(g);
: P% H H' r) n& O - let kk = smooth(1, k);//平滑切换透明度; |! N/ {7 F+ U5 F f
- setComp(g, kk);
: ] _/ P( h5 O7 u - db(g);3 B& B% o# [% G* _- M
- t.upload();
7 o0 l' {3 g/ I7 T+ X$ O - ctx.setDebugInfo("rt" ,Date.now() - ti);1 _) V/ i" M9 F% X7 v: y
- ctx.setDebugInfo("k", k);
- V+ p; l0 C0 b7 X6 P' p - ctx.setDebugInfo("sm", kk);+ b) m% @2 L1 ]2 b; A0 L* I
- rt = Date.now() - ti;
$ l& j9 t: F! B: l- e8 { - Thread.sleep(ck(rt - 1000 / fps));
3 `2 R, L( T2 F* ]9 W" Y - ctx.setDebugInfo("error", 0)1 [ m, b+ M& v
- } catch (e) {
7 N: n0 O5 C/ V. p- `! p - ctx.setDebugInfo("error", e);
. U. R w8 T9 q, P6 X& X - }
; m0 f7 k, }. q! O7 V - }
# k/ O$ L+ W# m& U# o' ~% r - print("Thread end:" + id);
& j3 U' C/ ^- N6 a& r - }$ N) e0 k1 Y ]3 [7 I* F; ~
- let th = new Thread(run, "qiehuan");
x- w6 f! z* Q1 z# Y! U5 } - th.start();
+ M* j( E9 f7 a - }8 b u9 W% M6 J- O. Z3 ?7 |
- |0 Q4 p" h0 z% G" @9 \% q- function render(ctx, state, entity) {
5 j7 i# x, [: C - state.f.tick();
0 T: M, ?% q0 a4 | - }
! Y5 k- H- ~: W3 Y/ k5 v - 0 y j2 |3 o4 g S4 C7 G1 N+ A, I' K. B
- function dispose(ctx, state, entity) {
* _8 c( s$ J7 O6 Q2 C - print("Dispose");( I: l4 I% @7 C1 W9 {6 m4 j: l7 W
- state.running = false;
. ~0 |2 U( p8 [& H2 } - state.f.close();
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- ' c& F' k9 r/ S3 `; ~4 A
- function setComp(g, value) {
* g: A% F! J; `! l$ z# y9 b& p% u - g.setComposite(AlphaComposite.SrcOver.derive(value));
q3 \1 U3 g m0 o - }
复制代码
% ?" E7 w/ N8 z* b. \ {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。% l5 ?( x- l6 [6 \( E3 b8 X; B& o& p
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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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