|
|
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
×
+ C, r9 s. L- L- z$ d
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。% Q) f9 ]- L2 ^8 b; e5 ?7 R
- importPackage (java.lang); f8 C8 V" [2 G& n
- importPackage (java.awt);& m. q& x2 m7 l4 m' ]
- , k4 s* v5 i4 x
- include(Resources.id("mtrsteamloco:library/code/face.js"));+ |& C6 q( u, R3 }- h2 E
& G% c; C6 G9 |; V3 |$ r Z- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
% t& W( v& n: h: Z7 X - + K/ F' u3 Q; j7 F6 ?% Y8 K& s4 v
- function getW(str, font) {: f5 p O; F5 O- A$ {
- let frc = Resources.getFontRenderContext();% S3 m1 S# o% a2 Q: N8 ?4 `& H
- bounds = font.getStringBounds(str, frc);
: a6 f7 s- Y; ?# o, V Y - return Math.ceil(bounds.getWidth());
, M6 ?% L0 J3 {, Y - }' E9 y5 N/ R' I8 V
& s& K3 [# W3 o U5 L' P- da = (g) => {//底图绘制' }% u) N/ S; z1 { K
- g.setColor(Color.BLACK);
3 W; V5 |0 f) M - g.fillRect(0, 0, 400, 400);/ L. Q# z2 ]% J7 f3 ^
- }) K5 g! C' O: ?: W4 l; |
4 D" l p+ Z6 e1 U+ k- db = (g) => {//上层绘制
; w2 Z+ N: ~5 X2 V6 r6 H; L - g.setColor(Color.WHITE);( e: q9 b! B4 u8 e
- g.fillRect(0, 0, 400, 400);
' M( e9 `) Y* g8 m - g.setColor(Color.RED);
; w |) d3 A% q& {7 O - g.setFont(font0);
) l+ Y! k3 v% d( O' A7 t: u3 Q9 c - let str = "晴纱是男娘";1 S! J* W# q9 A& P1 `* r- {5 n6 P) l
- let ww = 400;
( d) G U/ V$ ]0 I8 v - let w = getW(str, font0);
& W; }( \5 T* }3 f( Y8 Z8 G - g.drawString(str, ww / 2 - w / 2, 200);' `9 h) Q' ~3 d1 O# T" I( V; m5 |4 C7 Y
- }
8 T1 w* b% ^/ I' F; l( c: F3 t - ' r# Y* b2 @/ C! Y
- const mat = new Matrices();* c' y8 [2 O9 R) n( I9 w
- mat.translate(0, 0.5, 0);
+ Y" v1 _) k" h) N! m6 o' n - . V7 z8 T d. y/ \! ~
- function create(ctx, state, entity) {5 F' \* m( }0 V) n9 Y( v
- let info = {9 m7 z4 i2 E2 x% D1 Z# s
- ctx: ctx,
* {! C6 P3 J( ^8 r# }9 ~ - isTrain: false,
' ] l2 @! v4 i& r4 I$ k* j# Z - matrices: [mat],
. ~% Y/ G' q8 v; J$ Y - texture: [400, 400],
: s( _( M$ [- G4 M; k' ?' n - model: {
5 Q7 X+ P( \- A) N0 Y! f - renderType: "light",, J. W. P8 r9 _& |* e8 ?5 c% ~. c" C
- size: [1, 1],; C* z3 v5 d$ d5 C- v7 z; r
- uvSize: [1, 1]1 @) H. {, Y7 P) j1 {
- }: g' H& H8 m1 f# M
- }
/ Q) [& F" |. s" @% b, H7 s - let f = new Face(info);
7 H* D4 Y7 G' J8 a - state.f = f;- |- O8 B% O$ b2 n% _( `
- $ I4 d: K. _8 p7 k* ]
- let t = f.texture;1 b5 }+ D( D# } G2 b
- let g = t.graphics;
% j6 [: A, ^# \9 D8 Y0 ^7 a: z - state.running = true;
7 [8 J5 x* y# [# C$ w' c+ J& c - let fps = 24;
5 H: S9 Q8 W- r: D - da(g);//绘制底图* K- \) w u" Q- t
- t.upload();
1 |2 |) G3 W6 a$ a - let k = 0;. j n! Y% [+ I- F
- let ti = Date.now();0 T! W/ Y$ v" D8 K( o7 o9 H
- let rt = 0;) C5 v+ s1 d* u4 w8 e$ S
- smooth = (k, v) => {// 平滑变化# g! k. U7 m9 ]2 m
- if (v > k) return k;1 b6 V5 |9 P6 L
- if (k < 0) return 0;* {6 D- l- L) q5 v8 N' z! j, I. M
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;" ]! B$ n' o# n! a( d
- }, Q- s: N4 Z d+ z$ H
- run = () => {// 新线程9 A9 n( c4 R1 w3 G: s9 r$ \
- let id = Thread.currentThread().getId();
( }4 B4 _- x; G; C+ ~( D - print("Thread start:" + id);- h1 A$ K& s" p' B6 i9 s- h: V( A
- while (state.running) {0 t8 x y D$ R* r% Y
- try {
6 X3 a! r- p* R - k += (Date.now() - ti) / 1000 * 0.2;
( q4 ~/ j8 _( c- V6 v3 r7 l - ti = Date.now();
3 ^+ H3 _3 B) o- k7 a' E - if (k > 1.5) { y; i: A$ ^- H; p; Q; }
- k = 0;
4 ?2 }4 Z9 q- E6 n$ }+ Z - }" }4 c, _& Q6 }3 u3 e
- setComp(g, 1);3 v1 z. f6 y* `
- da(g);
/ ]% G# ~' y: u. U7 F2 F1 u& S - let kk = smooth(1, k);//平滑切换透明度' N! _0 h- H' c
- setComp(g, kk);' F: v2 h0 o L) R; T
- db(g);
7 ~1 g6 e2 c0 U - t.upload();' f2 ^+ S# b3 F+ t+ h1 I3 E7 R
- ctx.setDebugInfo("rt" ,Date.now() - ti);
6 r+ e3 W2 `5 K% ~, B: n% r0 e - ctx.setDebugInfo("k", k);
1 ]6 _1 e$ I* {% [+ G - ctx.setDebugInfo("sm", kk);
2 z5 ^$ o: t N+ y: E7 }/ q: k, } - rt = Date.now() - ti;0 `9 _& `2 L- |2 S0 K! T/ k5 f" j
- Thread.sleep(ck(rt - 1000 / fps));, a1 _& {6 P0 P
- ctx.setDebugInfo("error", 0)
' G6 f8 |/ \1 F, D! s - } catch (e) {
0 K; m2 r+ }& ^ - ctx.setDebugInfo("error", e);
$ D m! G, J' P! i: |, r - }5 _0 t, R: u f
- }) X" s8 I! L7 V5 ~+ N
- print("Thread end:" + id);. ]' S) R( T/ w1 U* y8 }4 p
- }
4 P0 M$ o# [6 S, d+ S - let th = new Thread(run, "qiehuan");
% I1 a" b$ `2 z/ @& t - th.start();& J, d% R2 L" V& @. h
- }
3 p0 D' b# G6 V/ l) `& O3 I, ]7 O" H - . f8 @! E) j3 l
- function render(ctx, state, entity) {& F5 E8 z% J, Z* m& @" |5 V
- state.f.tick();
7 j- P, B7 l: V) p - }# k/ l; K, a9 ~8 N% w1 o- m( {1 p& x
4 U( e& b0 M, @- function dispose(ctx, state, entity) {
: B+ O! J0 |+ _& a. N - print("Dispose");" T, m5 e" {/ |
- state.running = false;$ Q, Q3 C8 s9 @' ?/ S' d
- state.f.close();( t/ y0 X0 b+ B; d' J" x" W) F6 n
- }
4 p- k4 u! n8 ^' L; D) c# Z - 9 P( T* Q k. s% L7 m9 ?
- function setComp(g, value) {* R+ I' }% [: @% h/ m: Z( }& P
- g.setComposite(AlphaComposite.SrcOver.derive(value));9 O! r$ k S: h* F7 ^8 u) C" n
- }
复制代码 ! k! I) J- B$ i% V i$ Y; ?! x; z
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。 o- ^3 F3 y+ Z: p
' U8 W' d$ ^/ M% X } S# w
- t r" X4 @1 t; N. 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), B _3 ?% e) X
|
|