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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。- W) @" i5 K7 v9 W0 f, [% R
- importPackage (java.lang);8 I$ |' _2 Z( o' q2 r$ L
- importPackage (java.awt);2 B* O. {4 z" T, w- H- o4 S% j8 {
: q+ i' ~/ C3 m6 F& ?. \& J- include(Resources.id("mtrsteamloco:library/code/face.js"));) ^6 ^0 G# ^# @- u( e
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- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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3 K+ `$ |- P1 D8 G- function getW(str, font) {# l- A) ^- V: s8 i' E, v A' L
- let frc = Resources.getFontRenderContext();) u- b' h, p% M' \
- bounds = font.getStringBounds(str, frc);
7 w3 g8 i# H$ }9 I4 s+ |; L3 E - return Math.ceil(bounds.getWidth());9 R. F1 n' i! j# s9 d- B
- }
3 {9 f/ s% U& V# j1 O& M& J, a - 0 s" y3 F% Q8 e0 `! B1 T0 V4 W* _
- da = (g) => {//底图绘制
2 x" y) T6 q" ~ j+ S. P0 n! L - g.setColor(Color.BLACK);
0 T" \6 g! M( U" f+ I: a - g.fillRect(0, 0, 400, 400);
3 X( ]5 O& h+ [ - }
P: I( }$ T9 ^4 X1 L8 W
8 P9 T* Y0 B+ C- db = (g) => {//上层绘制' z9 u1 Y5 {: X5 ^! X' ]6 p; z
- g.setColor(Color.WHITE);- j2 y) ~& B8 i; N( ]; H+ B# o
- g.fillRect(0, 0, 400, 400);
1 `1 l7 `7 Y- d8 J/ ]9 l5 T - g.setColor(Color.RED);* K7 y c' v8 G b
- g.setFont(font0);/ Q! [% h/ w" K; I0 N0 e
- let str = "晴纱是男娘";9 N; H$ B8 [: L" x# B3 t8 o
- let ww = 400;
3 m" U" S/ X! N: D* P3 ?; l - let w = getW(str, font0);. z5 Q- R. A, @: \
- g.drawString(str, ww / 2 - w / 2, 200);) D) ^1 s9 p1 v- c1 e! l+ z
- }) T1 F6 r! t7 i* X
- 6 `6 ~& R, d3 g0 u6 t+ ~+ S% X
- const mat = new Matrices();# y2 _+ }7 ^# M
- mat.translate(0, 0.5, 0);
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- function create(ctx, state, entity) {* H i ^& M+ i2 m& W
- let info = {
' R J: f) ^. H3 p& v Y - ctx: ctx,
: Y$ E2 p% _! \( i/ ~ - isTrain: false,
p. v' g7 [, n5 c+ X$ h" G - matrices: [mat],2 S. I7 J3 ^# B" C! R
- texture: [400, 400],7 W8 L. R2 O, N- S
- model: {
1 I& ^9 l+ Y: R2 ]6 q1 ? - renderType: "light",
) k& ^% Y( n: ]& E - size: [1, 1],
( [0 G$ I/ ^" M1 v# D$ w# @, R o - uvSize: [1, 1]
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- }* a. E& i t" O$ Q
- let f = new Face(info);( ]/ `' W- b. [ L
- state.f = f;/ d# q7 w# Y/ j, i
/ T0 m( {/ Z) b6 U8 X( c- let t = f.texture;6 D: ]( B' `$ w8 l% P7 K# i
- let g = t.graphics;
- H( q1 P: A: ]) U - state.running = true;, [$ w4 j' v+ K e1 s% l
- let fps = 24;
4 x; ]# Y' u8 E7 e - da(g);//绘制底图$ d$ h- s) j5 L& v
- t.upload();0 {& k' c- ~; D" a# X* @) \
- let k = 0;
" j3 V' o' r. H+ { - let ti = Date.now(); C' P! ^" M* u2 U
- let rt = 0;/ z/ z& E# I, x
- smooth = (k, v) => {// 平滑变化
# ]! H5 l% N6 W/ e( g - if (v > k) return k;6 _& i; s- C; |
- if (k < 0) return 0;* x1 L8 ?3 s) f$ }9 x- \
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;! E+ Q" E" Z4 Y- K
- }
. S& o1 ^+ D- L( F - run = () => {// 新线程
. S" @/ \# ~ m - let id = Thread.currentThread().getId();/ j/ E% u) G, i8 z: A
- print("Thread start:" + id);% d" e3 y) a' ~4 q1 @! c
- while (state.running) {
5 Y2 b, c, u9 }" { - try {
+ P3 A5 S: f& H+ I4 B - k += (Date.now() - ti) / 1000 * 0.2;
! F. c: k# g/ O. v; e - ti = Date.now();& _" D( C/ {& N3 S
- if (k > 1.5) {5 }6 ^1 Z1 j- g% k3 @3 ]
- k = 0;" d& I+ d9 Y0 q# @" w' n& ~7 y
- }0 |' j2 y( Z! U' H {: c$ F0 }
- setComp(g, 1);. `5 l; S+ Z! Y
- da(g);0 L, D) z1 n$ f/ p: K/ ~: W9 w$ S
- let kk = smooth(1, k);//平滑切换透明度! i& M. L6 Q8 c
- setComp(g, kk);7 ^+ W, w: x6 \& ?+ z
- db(g);
- z2 G0 b( i- k8 U- ]7 a - t.upload();
; F9 L- ?0 F& M3 a& o8 t3 g* W - ctx.setDebugInfo("rt" ,Date.now() - ti);- o& y9 i) C( Z8 S- A$ H' s# I* u$ }
- ctx.setDebugInfo("k", k);
& g2 s% X$ w; b& I0 d' y) h8 a- F - ctx.setDebugInfo("sm", kk);
- ?5 t# X2 O0 t( w& P$ `# U# R% c, J: D - rt = Date.now() - ti;
3 \) B. Q# s' Y' s: N - Thread.sleep(ck(rt - 1000 / fps));
5 q; g; G6 N- x2 f4 Y7 o - ctx.setDebugInfo("error", 0)
" X) ?3 C0 s$ w" D. M - } catch (e) {
2 |4 n8 R y3 l - ctx.setDebugInfo("error", e);# |9 {0 V0 O' z: W9 w
- }
& G) D$ H* \ i1 O: I0 ~( W - }
- b! L) F7 V4 d' C% L/ Q - print("Thread end:" + id);. s7 d& [- r. w, N# w, e% M5 l. m
- }
! A- k% s2 l Z3 r% |8 o% ~7 ^ - let th = new Thread(run, "qiehuan");( [% Q/ o$ Z- W2 m+ I
- th.start();6 V$ E1 _/ B( V9 d
- }
4 L; u: z9 }' V - ; H! C7 Q/ p! d+ r+ K7 V+ M4 d" N; {
- function render(ctx, state, entity) {
# N, E- u- w8 u% |, G. F - state.f.tick();3 g( y) \! R& Q' E6 ?1 p+ B! b
- }
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, l3 G+ {2 Q: x9 N+ I3 N% S2 }, a- function dispose(ctx, state, entity) {: P+ u* J7 M. ?5 r0 |
- print("Dispose");/ }" z$ Y; _# k. |! |( L x R
- state.running = false;" ]7 d1 f C) G+ W% ^8 [' k
- state.f.close();
: U( I3 B* d/ x2 @1 } - }
1 w, D' ^0 H! A R# e) Q5 C
, L$ W, |0 d0 A' ^- function setComp(g, value) {7 ]8 a& H; f% O+ _
- g.setComposite(AlphaComposite.SrcOver.derive(value));) Z. b7 K n. _! u% A }1 H' G o
- }
复制代码
# D" Q ~2 i+ o3 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。
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T, _; F0 m2 L V3 ^/ |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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