|
|
还没有账号?赶快去注册吧!
您需要 登录 才可以下载或查看,没有账号?立即注册
×
: _* ?% k0 a) l/ o, 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。, h" r$ S- I9 b% j" g+ ~! I# p5 ?
- importPackage (java.lang);
' q$ \4 D( z" T; v - importPackage (java.awt);
# b. F) @6 a7 M( F4 q X
1 [7 x' T* A6 X1 u/ J- include(Resources.id("mtrsteamloco:library/code/face.js"));& C; i3 H. T" N9 |! d9 Z+ A
' n# G; S2 J+ ]6 V' A" b- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
+ P( K+ P8 z: w0 m0 W; y" y
% U, \1 p0 v3 d2 T4 t7 r- function getW(str, font) {
# h7 X! ^. W I' F, f0 f" u - let frc = Resources.getFontRenderContext();
5 i' K4 E! p7 O9 X- u - bounds = font.getStringBounds(str, frc);
) a8 }8 `6 H3 {3 E) x - return Math.ceil(bounds.getWidth());3 s! u: ]) R* C; K+ _; k; e$ I" D6 f
- }% X' y8 F8 ]: N0 p
% z5 S1 a( w% Q: r. C+ j q& Q- da = (g) => {//底图绘制" Q) r$ c3 h; ^& f
- g.setColor(Color.BLACK);
' P: ^# ^5 w% a8 \4 K7 ] - g.fillRect(0, 0, 400, 400);1 K( W% ~7 ?; h V- q e
- }& s; U) J. R# a% D% r, |5 p( ~
% o( @' i. l3 {+ t- db = (g) => {//上层绘制8 y+ }3 W* F0 { _# y4 {
- g.setColor(Color.WHITE);
4 j1 ?6 B1 T4 H) V& P! u2 y% Z - g.fillRect(0, 0, 400, 400);
& G1 Q$ M1 O) w, k; l - g.setColor(Color.RED);% l6 M2 [- M% y% F* v+ r* g
- g.setFont(font0);
- J" C8 s4 n' `' Z" h - let str = "晴纱是男娘";0 l/ q. B+ F+ U- T. C" Y0 T6 f
- let ww = 400;4 g$ b& ?, C) z/ o/ @9 f- {! ^ G
- let w = getW(str, font0);$ t0 X9 N1 d% T
- g.drawString(str, ww / 2 - w / 2, 200);2 ]4 W! a4 B7 H) M: q9 \
- }' b# i( z: L" l# i
5 h% ]' K1 @4 w- const mat = new Matrices();' h O! `( v; d5 `7 D# e
- mat.translate(0, 0.5, 0);
2 {( C: ?8 [/ ~8 _" [
, N7 Z: r# q U/ I- function create(ctx, state, entity) {' ]' B0 r: Y/ X! C
- let info = {; n/ `. N& Q# g% U2 e8 }1 t
- ctx: ctx,
E/ i) G2 F/ R2 X0 ?- w8 @ - isTrain: false," d/ ?$ X) L% Q+ N2 U
- matrices: [mat],
3 U; D* W1 E! h7 B& k/ R- u' b2 d, j. [ - texture: [400, 400],8 u/ u; d( I! c: B s& e) c
- model: {
' j0 W" a0 A! {1 j0 H- l - renderType: "light",; H3 A- P4 J- |# K* f
- size: [1, 1],- Y8 A' }" [' D) S( t) i% K6 t1 d
- uvSize: [1, 1]
+ `: h/ k$ G0 m3 G/ u% A - }
; Q) ]: a4 Z1 _, e: B - }
0 e4 }6 F$ ]+ {) T" T - let f = new Face(info);
# @4 b6 A, }) d8 f$ {/ I3 s# L0 u - state.f = f; ~6 D& J2 B: ~7 ]
* r% y" t" h) l' v* b- let t = f.texture;
. f0 p4 e8 c: x - let g = t.graphics;+ J- |9 F2 U6 }* f9 ^
- state.running = true;) m/ \4 O) C! e2 n# w; Y/ s
- let fps = 24;
& j8 w+ u, e5 g" H i( @ - da(g);//绘制底图! H0 _9 k+ K. O' m W! A, @
- t.upload();
2 ^. G0 z( {+ K2 Q. x, H - let k = 0;* s* o Z7 w8 n) R$ t
- let ti = Date.now();
0 q6 G3 [( i1 T& E& M - let rt = 0;
7 r: z$ E! R# T! } - smooth = (k, v) => {// 平滑变化
" F# Y: z% C2 W' y' \6 K - if (v > k) return k;
: s+ K j6 A6 H- Z( s: q - if (k < 0) return 0; w) C& x- v" V5 B2 G; ?
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
, }) H+ c& F$ t; }% R: A - }
4 S0 k7 r+ A- s5 W( ]0 R4 } - run = () => {// 新线程/ q9 h' u5 M4 X" v, k* A* w1 u6 {
- let id = Thread.currentThread().getId();3 B* }9 q0 \0 b
- print("Thread start:" + id);
# k# Y7 h1 s" K6 i: z5 n* b. ^ - while (state.running) {" [9 Y( ~5 j! u2 a* _" a
- try {7 _- Q: [# |+ \) u
- k += (Date.now() - ti) / 1000 * 0.2;$ V8 o8 R( F6 w0 b- `
- ti = Date.now();5 s7 w3 r7 l3 _! Y
- if (k > 1.5) {
8 y4 ], }$ n: i! y# T - k = 0;# S! V9 O" ~5 G1 D! |
- }0 v2 W# O+ K$ w( u- _9 C7 a$ g+ Y0 d
- setComp(g, 1);4 E2 `: p# y# H7 P, _
- da(g);
* O) S! y; [+ d3 e - let kk = smooth(1, k);//平滑切换透明度
; c" }( H( p2 j% S) ~ - setComp(g, kk);0 ?; u. c) o( H6 v. m1 n
- db(g);
6 o1 C% m' s5 U& P' Z - t.upload();
/ Q# T4 U0 ]4 Q; _ - ctx.setDebugInfo("rt" ,Date.now() - ti);# h; u/ M0 R; i2 b6 k4 g' @; W
- ctx.setDebugInfo("k", k);8 z6 V! K3 L6 r4 v6 e3 s
- ctx.setDebugInfo("sm", kk);8 k- E/ m* X5 Q( k
- rt = Date.now() - ti;
9 W5 ]1 Q1 }0 |% B9 d. k% _: f* h8 W - Thread.sleep(ck(rt - 1000 / fps));, S+ z4 t, ]8 g0 b' \- o' x$ z6 s
- ctx.setDebugInfo("error", 0)
& d. Z/ }+ h/ F, [9 M - } catch (e) {
0 c- l+ o5 T3 B6 J/ ^ - ctx.setDebugInfo("error", e);; `1 e& p9 u" n- R3 t, C B
- }
# b7 P( \' E- i; {* g/ V1 h - }
8 ^; s* {# f% T4 K } d - print("Thread end:" + id);9 Y* j+ t6 K! }
- }
9 f2 J$ I* S$ R" {9 b! b - let th = new Thread(run, "qiehuan");5 {0 q3 A0 t; @4 i: Z; T! f
- th.start();
' q! K# c R3 I3 q7 R, d: N, O - }7 x4 F6 ?1 X% }9 P/ C0 {; w
9 K7 _8 N8 z; Q4 R2 W- function render(ctx, state, entity) {
* Q. T3 u# Q$ y3 P& s$ | - state.f.tick();
% |' I! Z S+ F' B5 b$ }3 G. h - }$ K( Q- P9 I4 r: g4 k, N) \$ Y
5 u0 g5 @) ?. a! F1 E4 q( P5 T1 n- function dispose(ctx, state, entity) {
# _: C2 m- f: u$ m/ R - print("Dispose");6 c% R0 Y. n) a* @. X' W1 Q
- state.running = false;
u0 C t+ M- E - state.f.close();( l& {# d- S# J7 k( [8 x
- }
/ r# ^+ {8 W, j: l/ U2 r - ; e/ a. {, O: ?* b
- function setComp(g, value) {. X) _: j2 q& X, X& b! {
- g.setComposite(AlphaComposite.SrcOver.derive(value));2 T- t+ x; e5 E5 t. @7 A! d
- }
复制代码
% a( q0 p6 \+ n" m% ^+ x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。
. {/ ~2 M! V3 P! {5 Y/ L
. Q, A/ I$ z7 X. p9 E6 _* O9 @" Z% v! R
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
; |7 [& a" i: F z. u) D1 l |
|