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9 {- u! E; n" n V. W* ?' O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。0 g0 P* }; s4 y
- importPackage (java.lang);
5 ]1 H( E: [) x+ [4 i - importPackage (java.awt);) D7 D% `/ [' Z1 \8 n. ~0 N
- # ]8 I4 A/ [/ I$ K) H& s& `1 w
- include(Resources.id("mtrsteamloco:library/code/face.js"));
5 _, s+ q% e/ Y$ j# ]1 [6 E
; N7 x$ ^* e2 Z) `. k- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
/ _3 Q) ~" ^' ]; [# k
/ w0 A' z1 W1 e6 ^& i, K- function getW(str, font) {' y( [- R6 _4 i/ f* a, a6 n
- let frc = Resources.getFontRenderContext();
7 c6 A6 u/ g H* U$ m9 o2 z - bounds = font.getStringBounds(str, frc);
$ {" Q A: a1 q - return Math.ceil(bounds.getWidth());
+ A% H0 q& b* s% W - }
+ q9 `0 V4 d2 a! g - + ?$ {! O$ {4 M4 ]: V/ k
- da = (g) => {//底图绘制
9 @: A. H# F7 q - g.setColor(Color.BLACK);/ @: e T5 I& Z- Y5 ^: n$ C
- g.fillRect(0, 0, 400, 400);6 G; w8 w K: p. N+ Y& W2 H
- }
6 V4 q0 P2 @, u! p" j+ q. M" M; E- A - " [" g8 S6 m* J2 C! L I3 R
- db = (g) => {//上层绘制4 C c$ o; A2 a' r0 S# n6 U9 Q
- g.setColor(Color.WHITE);: Z0 I. k0 h( }' s5 {' T
- g.fillRect(0, 0, 400, 400);
* B1 }( ~4 C' v, C - g.setColor(Color.RED);
- e. s+ H2 b C( x4 R- L - g.setFont(font0);6 G$ v! J& J8 ?4 u3 p) G; \5 J5 B
- let str = "晴纱是男娘";& N8 u, \- n* @8 O. n
- let ww = 400; B% S! F" W. {8 {
- let w = getW(str, font0);
2 d7 [' G8 X: P; O - g.drawString(str, ww / 2 - w / 2, 200);
_9 o+ d9 z( O: @/ F! l - }% i3 H% V0 i5 R) a+ V* \
- 1 v( f# c/ f7 [, U
- const mat = new Matrices(); I- N9 Q/ E3 v# u8 D( J
- mat.translate(0, 0.5, 0);
# q0 }9 P7 X7 a
, `5 l2 M+ A/ b4 L- function create(ctx, state, entity) {) S' m: u0 u$ r7 h7 E2 I1 O. F2 q
- let info = {
6 j9 @5 U+ L& B$ Y* o2 c - ctx: ctx,5 ?- ~; f% ?: u H" n# w2 |
- isTrain: false,
& _* q) ]7 X) b, Q) g, z' T - matrices: [mat]," C; Y/ r0 `" s1 S, G) [+ U
- texture: [400, 400],
8 Z8 i. y' t" b A" I - model: {$ v2 g8 x- I% j2 ]/ `% {/ t0 c! s; b
- renderType: "light",5 g2 Y4 }7 g0 R+ O! `; w% l
- size: [1, 1],, [, D: t" _0 F/ C/ X2 n3 V0 }9 p
- uvSize: [1, 1]
( I4 i- |; h. q - }% g/ y C" S7 ]2 T
- }
9 S" g8 ^5 n$ U0 Y - let f = new Face(info);% G {$ j [, D: v4 H" v" Q* ?
- state.f = f;# C+ D6 C8 S. d4 U
! J2 j# F5 H8 U: k7 _: m- `- _- let t = f.texture;3 r. O' V0 z' ]8 k
- let g = t.graphics;
5 j9 {3 i3 P! T# e3 w5 ~$ `7 S0 p - state.running = true;9 L8 g* `7 L; R
- let fps = 24;
U: p! R. i1 n( z$ ?* e) ~ - da(g);//绘制底图3 o- O6 Y9 [+ z7 z O
- t.upload();" d9 \ g: Y- d6 B, \. ]6 p) J
- let k = 0; b0 |( i7 [ {6 k, m4 R: g; }# S
- let ti = Date.now();
* }; q5 z9 K% n) U i/ r% { - let rt = 0;0 }- f. Y4 y" x
- smooth = (k, v) => {// 平滑变化+ b8 E2 p+ t% Y! q; I
- if (v > k) return k;4 Q3 e3 p: I0 R
- if (k < 0) return 0;
* R4 ~0 J8 E6 q6 x - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k; v( E4 |1 `1 q) ?5 I# a
- }. Q$ l9 t( r1 u/ u+ k
- run = () => {// 新线程
$ E i; S* V5 ]& I6 e9 A - let id = Thread.currentThread().getId();; \& c! p" @4 F m7 T
- print("Thread start:" + id);
( ] p7 S2 I7 |9 T: U- }9 u - while (state.running) {: {, @, M% V' x7 O
- try {8 v6 L# h. }5 N5 Q* k. T
- k += (Date.now() - ti) / 1000 * 0.2;8 w' Z7 w6 n6 ], g" M7 i& l
- ti = Date.now();
; i/ E# L+ v; g5 h; t - if (k > 1.5) {
, P( D9 @- w: O8 c) J$ m1 A9 ^ - k = 0;
6 ?" d) E: k# _" e& z- R# i* g! i% x - }$ ]4 Z9 S' d& S; A# U
- setComp(g, 1);3 W9 g6 Q( F: x& e1 C
- da(g);
8 a4 X! R Q9 v% O$ y2 X - let kk = smooth(1, k);//平滑切换透明度3 I& }7 a# o4 I) F' ?4 E4 n ~" S
- setComp(g, kk);3 ]& g: j" }. E+ P+ l- [4 m; [) D
- db(g);4 j9 D& x& b! t: B1 u" N5 ?
- t.upload();6 O' ?- A+ x6 b2 R7 r) G# A
- ctx.setDebugInfo("rt" ,Date.now() - ti);
9 X6 v) a0 o$ ]$ t - ctx.setDebugInfo("k", k);
6 N: @- h% U9 A9 E" K3 N& f9 F: W - ctx.setDebugInfo("sm", kk);+ `& {; c3 N5 }( u' s {, ~# m
- rt = Date.now() - ti;7 B* {" K6 y0 G5 f
- Thread.sleep(ck(rt - 1000 / fps));- D. o" J/ R) p! [; d* r
- ctx.setDebugInfo("error", 0)
" U8 Q O- R6 N - } catch (e) {
, ~. u& `2 ]5 Q9 {$ A - ctx.setDebugInfo("error", e);+ F% w3 ]1 f+ ^. Q! \$ x4 b$ E
- }/ Y, x6 E" X& x7 Y0 S
- }
7 w" j% }% T) g# d$ p6 e - print("Thread end:" + id);
9 k2 S& L/ B- d8 K2 t ]9 l - }
* G! U! Z, C' v v9 U - let th = new Thread(run, "qiehuan");+ F: o$ Z+ t# u0 T0 K: p3 l
- th.start();# f' E' M4 B3 ~( t3 k
- }' _$ r5 u; G% f
G) _; Q4 a- A( k: S3 m- function render(ctx, state, entity) {4 @# I8 q% O8 Z% |1 G" ]) l& N
- state.f.tick();
3 k. i0 o+ [' v5 a0 [: H - }
$ Z( e5 |/ f9 O+ d
9 }$ P( }" ~9 L( j1 A2 }9 c( v- function dispose(ctx, state, entity) {% v$ v* X- F# b& E- h! L4 |
- print("Dispose");
; p& A# H7 }3 w - state.running = false;& l ^# q' ?1 |" O d
- state.f.close();$ r3 P0 B1 N6 [. q# g7 P# G! E
- }& V! ]: H" Y! E% N& t
* a, }3 q. w. j+ L# k, y+ |- function setComp(g, value) {7 m4 H; P7 L% Z0 \8 [/ D8 h
- g.setComposite(AlphaComposite.SrcOver.derive(value));
! W2 ~' Q% h" j9 S* l6 Z - }
复制代码
' y- X. h% @% N/ d/ I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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3 e8 \0 b$ z- j6 @
+ t7 p z$ s1 [' E. E2 N顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)% ^! V! X# }8 c1 u! D
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