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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。8 }3 i% N3 ~6 ?/ T- r) A
- importPackage (java.lang);
7 {2 t6 D* o' A, L4 b& a - importPackage (java.awt);9 B5 k' @. G9 Y! w; \% W
- $ O* K. i; C' e! v( c9 I: w- d3 H
- include(Resources.id("mtrsteamloco:library/code/face.js"));4 t- ^0 w% b. u1 S |) d( P7 I# `8 B b
- 9 y2 q: t0 i. u( X* N
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);' T& h: `4 v0 a5 O
- 7 Y5 h- ?6 ^; w4 T! e& |
- function getW(str, font) {1 v$ a' O* C/ d
- let frc = Resources.getFontRenderContext();4 f/ M& {1 f! | k8 A' @
- bounds = font.getStringBounds(str, frc);
" e3 n' E$ W! u; V) H. q/ W - return Math.ceil(bounds.getWidth());8 V3 l! j e3 B/ v" x
- }7 y; K) Y) {# H* f+ H* z( W+ w, v
! r: X/ m$ ~6 o' C( V7 o- da = (g) => {//底图绘制; v& T) I7 S3 z, P
- g.setColor(Color.BLACK);
2 @$ L# [5 h0 H6 X& c2 \ - g.fillRect(0, 0, 400, 400);4 B" T7 C4 ~0 r
- }
4 Q6 I$ l( e! D# A$ G7 @, s8 U - - E( N) N( E, \5 g2 W
- db = (g) => {//上层绘制' D. z% B6 c- M6 }, V% Y2 g; ~, g8 {
- g.setColor(Color.WHITE);
- L* a+ b) {5 p" f+ Q0 e- H- h - g.fillRect(0, 0, 400, 400);* R6 D @+ M4 V/ x! [' b1 f) W g- L
- g.setColor(Color.RED);/ m2 D) X+ r; v! A6 O0 q
- g.setFont(font0);# ]; X1 Z; D% J4 s0 y$ i
- let str = "晴纱是男娘";
+ }8 J8 f- B& W% E# g5 M - let ww = 400;
5 K2 O; T& C0 |7 S/ k - let w = getW(str, font0);- Q9 V6 b/ u# x9 q$ A
- g.drawString(str, ww / 2 - w / 2, 200);7 f' a3 B9 R6 u7 y+ L( K* S
- }1 X) f5 {3 c5 m# } y- B
g" |; K2 a3 E2 { A% j, |/ m- const mat = new Matrices();
# H. H5 n I* k - mat.translate(0, 0.5, 0);$ v4 A9 B' i5 h) U
- 7 k2 D4 X, ?0 F p8 I+ O( \6 X
- function create(ctx, state, entity) {
5 p: z) O1 l/ H6 H - let info = {4 V. |7 P$ n# u, o; a
- ctx: ctx,; P4 A( ?, @0 f' Y$ H
- isTrain: false,
# e9 p& G0 A1 X+ b" [% K - matrices: [mat],0 z. E! I/ R) F, A( z! `
- texture: [400, 400],
+ N0 F' L8 b6 d9 f( q- L - model: {
* }1 h' b0 P5 `% Z - renderType: "light",
6 R$ W* o' E! L h# K - size: [1, 1],
+ N6 i. J: ]) y/ ~; v0 ?) ?& I - uvSize: [1, 1]
& z$ p9 ^' ]* ]$ v6 { p- U* O - }
J4 A( R4 }4 W6 y/ k2 |/ d3 r( Q - }
1 [9 q, t/ P& d2 u0 ~2 G - let f = new Face(info);, d% s; L3 y+ u% q
- state.f = f;
- _, d: x/ h9 T/ G# i1 o* r - 3 H$ s. s' |6 p4 S6 r8 C" @
- let t = f.texture;
* h( O* a. E/ ^& q - let g = t.graphics;; T' c, y; ~0 x m& ?" n3 I
- state.running = true;
/ @* ?1 @/ F8 g% W - let fps = 24;
1 y* {# R5 W: m0 ^6 b - da(g);//绘制底图2 u {4 z! p9 X( N
- t.upload();
+ M a. i& P, w+ O - let k = 0;( ^: `4 z7 H' x/ x) D
- let ti = Date.now();& S* t: W0 S. A5 k6 ^5 g4 Z
- let rt = 0;
, U( B3 C0 m- J# T/ U - smooth = (k, v) => {// 平滑变化
# O5 _& A6 g0 `. K1 C% y! `# j( c' C - if (v > k) return k;" ~; \; y6 a& O; G; h) s
- if (k < 0) return 0;1 n+ p' M% W' ]' n" \+ P5 l
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;1 p7 y2 {3 G: |9 R1 j6 l
- }5 c$ X3 G* V; h
- run = () => {// 新线程* J0 Z1 J1 i: M; d$ F: Y* H4 J
- let id = Thread.currentThread().getId();
3 \! W4 F# F% k; a( A1 h - print("Thread start:" + id);/ p6 B. v( g* w8 ~* P* q% L
- while (state.running) {
" r! Y' n* ? O& L' ^8 w - try {
' f' s( i* w* { - k += (Date.now() - ti) / 1000 * 0.2;4 @+ g- _ v$ u' ~$ U
- ti = Date.now();: Q2 j, S, x- f# ^
- if (k > 1.5) {
% I9 F& w$ q0 l/ i - k = 0;
: _( f, \# Z% c: P+ A8 d - }
8 @$ K; M$ b$ W) ?/ y2 p; ~ - setComp(g, 1);; r" D, O' ^7 k9 K0 o. E, B
- da(g);
! X8 G3 c J) U* u' q8 {2 S1 J - let kk = smooth(1, k);//平滑切换透明度
' t# W# S+ o1 `5 Y: h6 P - setComp(g, kk);, l2 ]! x, ^- {/ i4 W( j$ j N
- db(g);: ?7 v4 N3 S- M. H1 M5 N& n
- t.upload();3 G% R" _. L- }
- ctx.setDebugInfo("rt" ,Date.now() - ti);
) R& m% @5 v& y - ctx.setDebugInfo("k", k);( I) q e6 D- ^* W) r/ [' ^
- ctx.setDebugInfo("sm", kk);
) j3 [, I' g' ~8 h, W - rt = Date.now() - ti;. I- j/ t! q+ f( i/ C. s+ l7 I
- Thread.sleep(ck(rt - 1000 / fps));) W( k5 x3 J3 S1 ?! k. R
- ctx.setDebugInfo("error", 0)2 o) R Y1 F( A5 ?
- } catch (e) {
& v' M' Y' @& x7 G% B# ?1 b) ~9 A" X# g - ctx.setDebugInfo("error", e);
% I8 K* y+ U5 X0 P - }9 d5 j4 n( q g$ e1 y" P8 e
- }
6 W, G9 M( i, l - print("Thread end:" + id);
) z7 g% t3 l2 p8 o - }3 ^$ ~0 F: E8 l1 ]0 C( I- {
- let th = new Thread(run, "qiehuan");
5 g! z$ F! L4 Q8 U6 {- y3 ] - th.start();
$ b _) @' [% n2 h - }
9 ]' f S3 x' F4 K5 r; K - / Z5 ~( @' Q# u' b( _* L
- function render(ctx, state, entity) {
. q- S5 O2 c% O1 P - state.f.tick();! ^- J( F- M8 ~4 j2 u
- }
% M: P" m! D, B2 }5 h
! ^6 }+ U9 h+ o* A: n8 u( c- function dispose(ctx, state, entity) {, U" S4 d' l: [( Y! W0 C* i& I
- print("Dispose");9 h' J4 c) M) O) Z5 T! r/ m
- state.running = false;: a2 p( ^( y1 y; n- ]0 F
- state.f.close();$ m- `0 C/ |! H& t
- }+ |# p( E! h# v. S) ~5 L) `
- 7 ]& H" L7 D* G+ X, B
- function setComp(g, value) {) T, m7 V3 d, p
- g.setComposite(AlphaComposite.SrcOver.derive(value));, i5 E+ d/ P- V( x0 k
- }
复制代码
/ o5 Z1 X0 `- i2 T, N+ K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。$ e& U0 c2 a. P& z
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, P" K d3 }$ p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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