|
|
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
×
: b* K2 B- v7 Z' ~2 O1 h' H
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。
' g% X" V6 S$ }8 Z: n- importPackage (java.lang);
) Z- r, F. O: M; w+ ?2 H - importPackage (java.awt);
) ^" h+ O! T- i. d! |
! @; p0 A: [* H- include(Resources.id("mtrsteamloco:library/code/face.js"));* Y; Y V/ G! W$ l0 _- w
6 l% L; f0 H3 ]9 Z3 u6 ~- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);4 p/ ` M) O) j7 n
) ~! L0 {* u( X$ |1 l+ n- function getW(str, font) {
0 b7 |6 E/ q) I2 T; I, j - let frc = Resources.getFontRenderContext();
" V% Q0 i. T D% d j - bounds = font.getStringBounds(str, frc);
! \% o) X* B0 {; G - return Math.ceil(bounds.getWidth());
' L* n4 A" v. b! ^: B# _ - }
: w2 O. U) R: \. h - 0 g+ r: A3 Q4 D' D$ o' @
- da = (g) => {//底图绘制
6 s; T5 k9 n) [ k2 J - g.setColor(Color.BLACK);
9 C0 I9 f3 O4 H8 s5 z8 m - g.fillRect(0, 0, 400, 400);
$ Z8 T1 N8 Y8 j6 Q. t - }+ j( X" M: E K3 R8 A: u. x
- + f5 P, N$ p+ o! J- \# l* a
- db = (g) => {//上层绘制; c' f( r+ q+ k( {
- g.setColor(Color.WHITE);
3 D% P3 t& w" R$ P: p - g.fillRect(0, 0, 400, 400);" ^! [; y0 q4 |7 S) d( `$ p) K
- g.setColor(Color.RED);- q$ F3 A! H9 D# u# p9 F/ L
- g.setFont(font0);% z6 S) O, M4 j# K
- let str = "晴纱是男娘";7 l8 x/ r" L$ q8 c2 [
- let ww = 400;" J" ~/ U# S. v" j& }4 U r! F7 P6 J
- let w = getW(str, font0);
4 e0 g' Q8 {1 S W' J - g.drawString(str, ww / 2 - w / 2, 200);
3 A, [( _" x) e( j. K7 A - }% B0 n6 [8 M5 M
- / B: p7 K) E( I9 R# K, L
- const mat = new Matrices();
' ~1 e6 x/ K8 J" K - mat.translate(0, 0.5, 0);2 U+ y- k: U: _. t: S
6 P2 F& s D/ g& P3 K$ g- function create(ctx, state, entity) {2 E. A/ r- ~0 g
- let info = {
" V( a+ V( g7 ]/ s/ y3 Q; r$ N8 r - ctx: ctx,
6 } V* ]) r0 n B3 c" Q: @ - isTrain: false,
/ |! a% l& f1 [7 j3 j3 [/ X - matrices: [mat],
: }- P" r" W; s- P - texture: [400, 400],% h2 V& L( j% R9 l
- model: {9 G# O* @" X. _/ M# t; C. |
- renderType: "light",
7 Y! f* T( ^) o3 x/ [$ ]) e - size: [1, 1],
% M7 t, p! J, G+ Z* T: \! N - uvSize: [1, 1]
/ L# h* J; U( o0 N) ` - }
! S3 D# W% Y2 ]0 {! U - }6 ?1 y8 U7 x9 V* r9 T
- let f = new Face(info);
. U4 a. T( a& G3 Y - state.f = f;
! f+ `' v& A d
- x; x: c/ y) F5 y- let t = f.texture;3 c8 e+ p f; f) j
- let g = t.graphics;3 r1 K4 b Q' j$ T7 i, J+ v
- state.running = true;
6 K+ ?: v! \2 ]3 N% z$ ?( k* l2 s: v1 b" q - let fps = 24;4 |4 f, [8 `* U
- da(g);//绘制底图
# R3 K9 s: U. u Y7 C; Y/ n1 X0 g - t.upload();
8 ]! s; ^9 x4 H1 f; ? m, R - let k = 0;
/ a! u+ Y3 | J3 }. x9 \ - let ti = Date.now();6 f6 x& m C4 a1 p& s( J+ h9 y9 |# a
- let rt = 0;; e/ d. W& g9 ~
- smooth = (k, v) => {// 平滑变化0 t2 J; K- h1 N
- if (v > k) return k;& r# S1 T% Q( N1 A2 r4 v, \
- if (k < 0) return 0;
: y2 l* M* M: Z* }; k0 G - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;* \$ K+ R: G3 h. I
- }# S! u$ \: T' e# t0 u! O
- run = () => {// 新线程
& ], y1 {$ F J+ a! u$ | - let id = Thread.currentThread().getId();' s' _* r6 d7 B2 B' r x( w
- print("Thread start:" + id);
^8 x% V4 M5 |( r - while (state.running) {
1 K) F" E0 t% v. ^. l4 W+ l# ? - try {
4 ?# q. c8 V/ `( @% a- ^ - k += (Date.now() - ti) / 1000 * 0.2;/ T2 ]5 t# b* c8 |) i1 h2 m( m# ]
- ti = Date.now();
" g! k" w8 X. s6 k5 ] - if (k > 1.5) {4 h3 ^# U, y' z, o6 m( Q' K
- k = 0;* ^$ {: y. `: b* A+ u* |6 l4 I
- }
: V& v! @; U) A0 ^" S - setComp(g, 1);
; R! l& U3 l. e" M* Q8 b - da(g);
* |( e) j% M; H0 P/ T! n9 x - let kk = smooth(1, k);//平滑切换透明度
) ~' ? ]1 L. t - setComp(g, kk);
1 ?& A, G4 l/ W j5 q7 [2 } D - db(g);' W2 P2 u5 w1 V- E
- t.upload();
+ C I" e0 S) g; b; p4 O" n2 e6 J - ctx.setDebugInfo("rt" ,Date.now() - ti);
* O( a# \, n. [& v- T - ctx.setDebugInfo("k", k);3 G" \9 `: M% I H6 J
- ctx.setDebugInfo("sm", kk);
2 U+ _% Q ~+ B - rt = Date.now() - ti;# m$ R" I; B; s3 X7 ~# a) h I
- Thread.sleep(ck(rt - 1000 / fps));' _" }4 Y$ E8 X5 T( K/ s( T
- ctx.setDebugInfo("error", 0): W6 w4 r! q# N; F/ r
- } catch (e) {! V# S- B. A2 S1 P* ~3 E
- ctx.setDebugInfo("error", e); ?: m( F( P4 h& t* n* P% W
- }: {* M2 F/ J4 m, g" U( H
- }2 B9 u' q: a0 U
- print("Thread end:" + id);2 D! ]3 i& Q% P+ U1 W. O: P+ \
- }, ^( l# D$ {' o
- let th = new Thread(run, "qiehuan");
$ m* w ?) V% i' r8 H - th.start();/ Z5 b8 m, c& K& Q- B
- }. i! `5 F; z6 ~: I3 T+ V6 z
" L' p- U6 i9 y" y% t# T! J7 f" _- function render(ctx, state, entity) {2 o5 q, [- g% E& w" u' T4 V
- state.f.tick();
: u9 K1 V8 `3 H) G- e5 Q - }
8 \& x$ Q8 w( y. I# L; ?6 N$ o/ Y - # r- P/ ~0 m5 s8 [
- function dispose(ctx, state, entity) {# T1 w- I' G; ?: c
- print("Dispose");3 C9 ]% E1 n5 q
- state.running = false;
# P; ~; R4 v C u( t1 v; r9 q/ n' [; R1 A - state.f.close();
2 `/ C% X- x) ]" x0 i - }
. |# m/ L" L- _9 h6 Z& u. F: R - , M( |% F! `) `- u& ]. ~
- function setComp(g, value) {
. y5 H$ M# E& @; A - g.setComposite(AlphaComposite.SrcOver.derive(value));4 e. d1 u2 x3 J# E, {
- }
复制代码 # K' a) N% C$ X$ i6 y" e! m3 M
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。
5 N& o4 L# d' J. e
. ?8 Y% n/ G- |: b; H, _- A; j% Z& z/ U
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, u! P& t9 f+ m- J
|
|