|
|
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
×
; a# g* E* j5 p: X
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。
' O/ d: v4 i8 b4 f- importPackage (java.lang);
5 l1 _" R6 S: { Y - importPackage (java.awt);4 m6 V5 c2 ]) `+ M* M& W8 `/ O
- T$ p/ H7 @( F6 @- H5 r- include(Resources.id("mtrsteamloco:library/code/face.js"));
2 K* A/ a8 H8 l% R4 u - % V, e/ J9 b8 T
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);- J( ~1 }+ c5 M3 l" n
- G' g7 b* {* C9 G& J. e7 H7 J- function getW(str, font) {
, Q3 x' i8 i( O8 I3 x6 z - let frc = Resources.getFontRenderContext();$ P6 ]. S3 ^7 d- u
- bounds = font.getStringBounds(str, frc);
2 g0 P& ~5 b, @* h& n2 W - return Math.ceil(bounds.getWidth());
. |: R5 D# ~* s4 z1 F. m: b - } L7 f! b# L- Q. c+ P, C9 j x0 K7 Y
- 0 l5 O- C7 w2 }! a* p: f& B
- da = (g) => {//底图绘制
1 S6 [! e) G, {* Y$ h( x - g.setColor(Color.BLACK);
; T' h9 J4 C) u2 X - g.fillRect(0, 0, 400, 400);5 R" Y' B" _1 a
- }
, u* ^/ K1 o, ?7 P- y$ K6 n
, u. r2 x3 C; b+ x- db = (g) => {//上层绘制0 K" {- y2 H7 e) M7 ~1 `2 C6 O
- g.setColor(Color.WHITE);
& H$ P2 I3 f* X - g.fillRect(0, 0, 400, 400);
) x$ Q& s' ]7 F9 c8 J* |, R - g.setColor(Color.RED);/ K4 x' o, F6 \" f& c* M, A
- g.setFont(font0);
, S' V1 }6 G0 I) T - let str = "晴纱是男娘";
" r6 C6 x; _/ Q H4 v! _ - let ww = 400;" ?' j. Q; |$ Y c) \
- let w = getW(str, font0);, @5 w! |$ ^9 M! e1 w
- g.drawString(str, ww / 2 - w / 2, 200);9 q) o) d5 z/ p9 e
- }! L, A, a: Y% g9 y9 N
- . Z' c# r7 k' C# Q8 y, m
- const mat = new Matrices();2 T5 c, {8 ?4 h4 K7 W9 e
- mat.translate(0, 0.5, 0);. @# E3 a+ i) p7 p
- 2 k' ]: C& ~+ d+ A+ ^0 O& i$ C x
- function create(ctx, state, entity) {* E2 m' t1 Q9 ?9 \5 x( ^- y0 P
- let info = {
& C# ]; x; q6 }6 n1 ~ - ctx: ctx,+ K3 E+ ^" [3 K( f. K
- isTrain: false,
! ^; f2 U! f' ], [ - matrices: [mat],3 P. L# _$ E Y+ T1 V
- texture: [400, 400],* h/ V3 x! p: n+ H* q
- model: {$ \9 ?* V! J( N4 X
- renderType: "light",
6 G" E; m+ R$ U% ~ - size: [1, 1],
* ^( T- t, _) E' t - uvSize: [1, 1]
- Q! ^- t% _% d6 W - }% V0 k/ s7 D1 U- \
- }" a) g* \" G6 w* \" f( n
- let f = new Face(info);, Y6 H# S9 w9 l, q* m. x; T" D: S8 \
- state.f = f;
6 Y9 @9 s# [4 e% N) { - + u6 h& ?$ i* ?/ j9 D* |+ v/ l" J1 m( t
- let t = f.texture;
+ c. k3 A1 j. V# k$ s" m7 |0 s - let g = t.graphics;1 W4 J& C9 p( s5 {' t% G d
- state.running = true;
2 z2 p- f! [& W7 l1 X2 w - let fps = 24;5 q; X/ D( ^8 K i* ~- O- f: b
- da(g);//绘制底图
- y+ E% D, C: F" g L$ j. W" m# Y9 f1 D - t.upload();8 s- u7 a; G$ o. Q* u9 \
- let k = 0;
8 T5 a5 Q2 ~) A - let ti = Date.now();+ r8 ]0 |; {- y7 a! U, K3 X
- let rt = 0;
- K) D3 Y& i. [' g) I5 H2 v - smooth = (k, v) => {// 平滑变化( {; ~- f/ }" U& ?
- if (v > k) return k;
/ a. ^+ @3 p/ b+ m1 p. R - if (k < 0) return 0;
; j: X6 w9 M; |* D) v" D# ]: C - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
# n+ F3 H9 I$ `% K! d - }
7 t/ [8 t2 P7 Z - run = () => {// 新线程0 `. w( c% U9 U2 o
- let id = Thread.currentThread().getId();
5 F+ W& b5 i# @0 Y& n - print("Thread start:" + id);- l$ q7 I3 m6 A2 S7 O8 U
- while (state.running) {9 a3 \* b9 k0 T
- try {* J8 j3 L5 k" t S( U( h% w) ] B' Y
- k += (Date.now() - ti) / 1000 * 0.2;0 @; `+ _& E/ A, T8 L6 v, T: g% i/ K( w
- ti = Date.now();( \ Q% K: t( `. W+ q! f2 S
- if (k > 1.5) {+ I U( _ y9 Y) A, e1 y! k7 }
- k = 0;
, P$ ^; Y# t! K( k) r7 I/ A - }% f- z% ^( V6 J3 F2 O
- setComp(g, 1);
' j$ C2 p* M' W, w9 ? - da(g);
7 M5 h- ~! s. @! z! z6 Z - let kk = smooth(1, k);//平滑切换透明度& E: ^/ A- n) |3 ?- F' Z- B
- setComp(g, kk);% ?+ `4 G' a( W
- db(g);
0 P/ P4 m% ?+ [8 W. l I - t.upload();
6 y. u6 C( l2 w* h6 I - ctx.setDebugInfo("rt" ,Date.now() - ti);" d% e) s* g# ~" z+ ?5 T
- ctx.setDebugInfo("k", k);
3 l# e( n5 [5 \6 S( b - ctx.setDebugInfo("sm", kk);
* E9 ]/ e3 w! F0 O% r, f5 V5 J( K7 ~ - rt = Date.now() - ti;! M' g7 q0 g; h- o/ v
- Thread.sleep(ck(rt - 1000 / fps));
1 e* J" G, T' F$ p8 U! f. i - ctx.setDebugInfo("error", 0)9 Q0 F/ A; @7 D. j ?$ ^: n" _8 N
- } catch (e) {
4 k( I; _8 ?0 c# p1 | - ctx.setDebugInfo("error", e);6 \, P. z5 M ~8 D/ z2 k
- }
2 N. t" z: F5 S9 j* t - }( F/ P: T; ?" z" \; s
- print("Thread end:" + id);9 w' t5 h) H+ c4 U4 M1 N3 K
- }# Z/ `9 d. ^# h5 V
- let th = new Thread(run, "qiehuan");$ v( g1 \/ ~8 I# y) q0 M' e
- th.start();
, W. w: C, Y x, d3 o - }
9 s# o2 z5 k0 c | - 6 S2 F5 e- E ?+ u. f/ H
- function render(ctx, state, entity) {# v1 L0 l& V& [8 y* t- [
- state.f.tick();
; Y( L2 i9 o- @3 m& Z - }
; I; }3 }( j' d Q
9 M, m/ M3 N( l6 |. k) U' C- function dispose(ctx, state, entity) {
" C9 Z; R5 n& ?- R) S7 O - print("Dispose");
. ]$ x o# @9 V& P- i - state.running = false;
1 g) d# ?- M) o - state.f.close();
! h; N: {& _: B3 Q$ m/ \- C- W7 N - }( D- F1 v D' d. `
% J' H9 b9 ^( s G D u. ^) a- function setComp(g, value) {5 y0 k2 k: w! h1 y- m0 E
- g.setComposite(AlphaComposite.SrcOver.derive(value));
4 d: l" C# _+ f5 S - }
复制代码 ! ] S1 t; }$ ?* l* t h
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。
+ Y" n0 J% y0 z' u7 m2 l- |2 h M, e2 H6 ^% X7 _& Y
; [0 v( u: H/ Z( K& R5 Z顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
' @. Q6 n) Q" x# g9 _% W1 T- y |
|