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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。4 K% g5 b5 T. N- S- F0 `- t/ z$ _- t
- importPackage (java.lang);2 R) t+ r. Z% D! D3 u6 R) ~3 o) H
- importPackage (java.awt);7 y4 j- L% T. f( R
/ j+ p; Q6 }5 q4 z, D- include(Resources.id("mtrsteamloco:library/code/face.js"));
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- J: n- y1 a. I/ l$ L5 N/ Y. I- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);8 k4 V1 A; D) e
- 1 i2 d' m2 Y3 A' ]' J
- function getW(str, font) {; |: q& T; J1 T* E
- let frc = Resources.getFontRenderContext();
2 ?4 p8 j% `: Y- J0 j - bounds = font.getStringBounds(str, frc);6 `& d1 [8 u; U3 W' S: C o% R) e
- return Math.ceil(bounds.getWidth());8 D0 |4 ]( f$ K' ?% i% E ?
- }
2 { d3 q) N! V$ t: A8 ?* h* R - 9 V3 ]" R! V0 b
- da = (g) => {//底图绘制
% g/ Q1 u2 d6 c, L5 M! g- z - g.setColor(Color.BLACK);
9 r& L/ h- K7 D! V' N( h/ ` - g.fillRect(0, 0, 400, 400);
* @# H, A& z' g3 \& @ - }( h$ ~6 k- h5 P1 J M
- & ^% s8 A+ ^" w' \7 l" V; m0 i
- db = (g) => {//上层绘制
: m/ X. c9 k5 J0 R4 ]8 u - g.setColor(Color.WHITE);
6 s- z' G1 L& s. s A - g.fillRect(0, 0, 400, 400);- p: f4 l+ {6 J3 Y. v
- g.setColor(Color.RED);
& Q3 U; c3 W) A+ n - g.setFont(font0);4 k& L2 p- g+ I& |4 ]& \3 J
- let str = "晴纱是男娘";9 v4 z2 q" `9 ?
- let ww = 400;
3 {" m! Z5 R5 c6 L* `: p - let w = getW(str, font0);
3 t: P& u& } p3 z& _" ? - g.drawString(str, ww / 2 - w / 2, 200);- e% Z( Q& I9 @: ?" L
- }! T' [" Z) c4 h! p
8 a) G G6 T5 Z' k! ]- const mat = new Matrices();
* w, I7 b. q( ]9 Y. { U& v - mat.translate(0, 0.5, 0);6 } V/ G) g N; N
- 9 j0 P4 L v; o3 W3 X
- function create(ctx, state, entity) {2 ?; z& ^! @/ E5 Q+ O: G( Z$ h: _2 E
- let info = {
* s+ ~$ k/ @: m5 z - ctx: ctx,, \. _5 S( @! k4 |3 l3 ?- T0 `
- isTrain: false,8 A9 p$ E$ ^ K
- matrices: [mat],& E( Q" ?- ?) f0 o8 D* g9 j2 G
- texture: [400, 400],8 P2 V! H( l- X0 G. ?
- model: {' C& U4 K, [$ ^+ ~) t- P
- renderType: "light",( R' \9 b) k9 o: t
- size: [1, 1],
7 k' O5 \1 B* W$ V' A: C - uvSize: [1, 1]6 N! O& k# ?$ ?* @) H
- }- @/ e* d. f! p
- }6 a6 k9 X% h0 N9 v
- let f = new Face(info);
4 ]% I( `* a7 W4 M! K - state.f = f;/ F) m+ M2 T$ a a5 }; p: K
6 C5 H$ j% X% [$ T; r& {8 a' S) s- let t = f.texture;& e+ E8 D! F* [9 G
- let g = t.graphics;
1 |1 U B4 T4 s* W; k1 N8 ]# o( L - state.running = true;
: U8 M* H# \9 K- i* q2 M2 \ - let fps = 24;
; ~+ x+ `: ?' X y - da(g);//绘制底图+ |' M$ `0 }. q% P2 c$ }
- t.upload();
) X$ W$ N0 E8 E9 B7 c% f+ b+ } - let k = 0;% b; e$ s, g k) I" T% |. I3 R
- let ti = Date.now();) M( J, G& @' Q' E3 H
- let rt = 0;8 r: `4 r0 Q( K J/ v
- smooth = (k, v) => {// 平滑变化
. J. X+ a8 d/ i3 z - if (v > k) return k;6 q0 p( z% W6 L7 {: l; s0 J! e
- if (k < 0) return 0;9 m# e, n" Q8 X) t5 T
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;0 n! E, w) p1 M, A
- }
) A9 u7 a9 J, ^% f0 d. B - run = () => {// 新线程2 r7 J; Q; r6 k/ n* R9 y" \* H& F
- let id = Thread.currentThread().getId();" ~+ U' o1 f/ K, t: h+ T
- print("Thread start:" + id);3 j t! J$ h, Q w# z2 h3 f' O
- while (state.running) {, t* y2 l' H* c" o: H0 T* q4 F' S
- try {
6 o8 g; \; S8 O7 a - k += (Date.now() - ti) / 1000 * 0.2;
. I" \) m" W1 ?& i# @4 u! E - ti = Date.now();1 K) }8 {0 R* ^, I$ v
- if (k > 1.5) {
0 Q% K9 d7 ?0 r - k = 0;# ^/ t) y& Q) N7 B9 E7 N3 L( O
- }
! i% @* q" p* K) p4 z: t - setComp(g, 1);
( W, H9 {( u2 P: {3 X2 a - da(g);! g/ x2 X' M; E) ?
- let kk = smooth(1, k);//平滑切换透明度0 _ p# u8 d# w7 E
- setComp(g, kk);1 N: k$ g! [# L7 s, r# v- k
- db(g);/ ^: J, b9 C! m) m" T9 R
- t.upload();% T6 v u* k1 z, h5 z( x
- ctx.setDebugInfo("rt" ,Date.now() - ti);
G7 E( R( g* A4 o - ctx.setDebugInfo("k", k);
, A! I" ]; I8 z6 ?- w: C g - ctx.setDebugInfo("sm", kk);$ [* z: i! d: M& z$ t: ^9 l4 E+ K# k
- rt = Date.now() - ti;! F( T- W* s& t7 P! V
- Thread.sleep(ck(rt - 1000 / fps));1 k( W/ @+ V: c" s
- ctx.setDebugInfo("error", 0): y8 u' R0 b3 |6 e
- } catch (e) {1 G% ^: W3 g, Q& C
- ctx.setDebugInfo("error", e);3 q& x. g& m; S
- }
: _) s4 ~( J; P. d - }
: Z7 O) V- O1 q/ T - print("Thread end:" + id);, `4 ?2 j# ]# k5 T; Z& M5 p
- }
. w5 u) ]/ T) O - let th = new Thread(run, "qiehuan");
4 _3 X& _4 y2 m9 [4 M - th.start();; r! @2 X2 x6 W
- }
* f- A% y7 l- Q; T) q4 s6 y - 3 W5 ~7 m6 k, W- w
- function render(ctx, state, entity) {
! P$ v$ @# X' R9 ~) z - state.f.tick();: D0 Q p8 p7 C# f
- }* }$ d; U0 O. M0 S# U. \& ^
- h( @0 [* w; O6 {3 R- function dispose(ctx, state, entity) {
/ y0 E1 [( N4 e - print("Dispose");
% G. V w- c$ ` - state.running = false;6 y% X( E* m" n! [/ S$ G
- state.f.close();
( `9 B& g' r- a2 } \ - }
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8 E4 L( H; T, k% `2 i) t/ |- function setComp(g, value) {3 p" a5 p9 v# s: }" B1 Y+ `* [
- g.setComposite(AlphaComposite.SrcOver.derive(value));
( f2 g" a$ C4 A1 R4 F; S - }
复制代码 $ z' F4 N3 M% H( l+ q
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。) o0 Z/ H3 u6 o' |
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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)% z5 t3 H% f9 a% Y) ~5 b/ r6 H
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