|
|
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
×
2 O! h0 e8 B) ~2 E$ t
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。
& l% e$ v8 j8 ^- importPackage (java.lang);
$ x2 ~8 k$ h+ i1 \7 i4 @! t9 F - importPackage (java.awt); ~8 F: g; @' p, G
- 3 A; \; W7 j8 c: s- D' Q( B) V
- include(Resources.id("mtrsteamloco:library/code/face.js"));
; s# j; [ l j. h* X K# X
8 H- K/ ^' `+ y; v) ]- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
7 M+ Z+ t& S' {, `! ?# t4 p
! n( J+ s( T4 s1 f- O0 k4 v- function getW(str, font) {& I8 D: q. ~, o2 b
- let frc = Resources.getFontRenderContext();/ N1 r0 M4 ^! \2 T3 o, g B" y
- bounds = font.getStringBounds(str, frc);
# e7 Z t7 k: p0 ^' } ~7 [4 l - return Math.ceil(bounds.getWidth());
5 C$ {4 M) m4 ~/ d, N - }5 y' ~3 _1 _% Q/ U- `9 q7 U/ h* N
. F4 a- }. d% }3 `/ {4 L! I- da = (g) => {//底图绘制- W. }! E* y% w; z2 i. w3 n
- g.setColor(Color.BLACK);
! J5 ^6 k1 t+ ]; Q& t4 D - g.fillRect(0, 0, 400, 400);
7 v/ D( C' ^/ M$ k - }
8 T! u9 m2 ?2 ]4 l4 u- }! \7 L - + V6 f8 z+ L3 z1 W7 [% R
- db = (g) => {//上层绘制
: y4 P' h1 _; A0 R7 d' O* `% Q - g.setColor(Color.WHITE);
/ }4 t& v. ^; L8 j5 j5 y - g.fillRect(0, 0, 400, 400);4 \: P ^3 s' M6 U; S0 r5 H: J, P8 v$ E
- g.setColor(Color.RED);
. {* d9 I5 {5 z% u6 _ - g.setFont(font0);
8 ~4 d9 z8 i3 N8 T8 s - let str = "晴纱是男娘";$ P' | ?0 y n ~2 f
- let ww = 400;, G" y/ `$ x! A2 f0 `2 Z0 z! S
- let w = getW(str, font0);
" b5 ^% t$ P6 E. h: e - g.drawString(str, ww / 2 - w / 2, 200);
6 T6 j( S* S7 k$ g8 G) K- F, c - }
+ h+ ^+ G9 ?. K. X$ U
1 w4 R. X; u/ J4 D' L( u' P7 W2 _) Y- const mat = new Matrices();
( J& p4 Y5 r, Z) L1 b! H - mat.translate(0, 0.5, 0);
2 k3 ^7 F4 \2 H: e! L: Y: i
* o3 O- H5 z7 ^9 G* Q- function create(ctx, state, entity) {* \8 ]6 L) a' a' A3 J5 |5 }
- let info = {
/ S$ [3 _# J2 Y" |: V. Y; p* u - ctx: ctx,
, I; Z- t1 V% j$ F' b: F - isTrain: false,* N# Z/ r4 j: S/ {# h g7 y% U& L
- matrices: [mat],. J0 n% c8 }& p
- texture: [400, 400],# C/ ]( t- o6 A3 f& p
- model: {
9 o% M& z( ?' p9 c) X+ U! j - renderType: "light",
+ Y9 `0 z; Q! J/ g* ? - size: [1, 1],
7 w2 h. D/ N* }" }: i - uvSize: [1, 1]" _: o0 o8 p+ \
- }
) r: F3 W. Q' _3 ~ - }" z+ B) |4 s- F* c4 X" t% c
- let f = new Face(info);
1 v* A- A: K' P0 Q2 D - state.f = f;6 g3 H/ H! O& m
- * ^2 V. H. ?$ F9 y& Q6 u
- let t = f.texture;
6 Q+ Q* R- Q W" ? - let g = t.graphics;
4 w3 o K- f% @+ ] - state.running = true;6 D' l2 Z. K( d8 Z# x. G' \" i# S/ g
- let fps = 24;
" K( ]( _# ]) e- R8 M/ h - da(g);//绘制底图
4 J4 p6 y$ d/ U/ z# i) J - t.upload();- U- m }- E/ \) o
- let k = 0;
^' ]7 W* I6 G- ]& X - let ti = Date.now();
1 Q, }& f0 f$ V+ P& D" R9 h) \ - let rt = 0;) v' f) X: A1 ]+ Q2 Y7 r9 S
- smooth = (k, v) => {// 平滑变化
, x! q' ?# p- `. F - if (v > k) return k;: [' D7 W% Z( r5 z8 `8 v8 H
- if (k < 0) return 0;
0 v3 E9 b* [1 B1 A - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
& ^! A, e4 e% x o6 [ - }& U& I; u; G0 l1 w
- run = () => {// 新线程: N8 [$ {1 @- G+ \" m
- let id = Thread.currentThread().getId();+ G# S$ x1 M& w4 g( H8 O7 `
- print("Thread start:" + id);
- j- o' @! w; w2 } i2 m7 f2 |, A3 s - while (state.running) {
0 D, n! H: V( M - try {
' ~; F+ I. m9 o1 T( k - k += (Date.now() - ti) / 1000 * 0.2;, y4 r+ U: c/ i+ L# s. [
- ti = Date.now();9 r+ S* w/ l& d
- if (k > 1.5) {
: H* {- W$ ?0 ^5 ~5 M; B - k = 0;
: M/ a- G/ _9 h - }
: q& f% k. Q5 {% E - setComp(g, 1);7 }7 i) e0 W5 Z5 S- j7 i
- da(g);( l, }* \! V! z; @/ \
- let kk = smooth(1, k);//平滑切换透明度
% K4 ]9 `2 P' x% ]* ^0 } - setComp(g, kk);
. V! G# h3 {6 y+ b, E - db(g);- k$ Y( y# p' T) Z2 Z
- t.upload();
1 ?2 N% d( D1 ^7 ` - ctx.setDebugInfo("rt" ,Date.now() - ti);) \) \4 J' R3 a1 {+ w- W$ d
- ctx.setDebugInfo("k", k);* B9 ^: S" S3 ^$ j
- ctx.setDebugInfo("sm", kk);5 W ], s, r( Q/ p9 R+ D
- rt = Date.now() - ti;8 w4 O, c- w! `4 c9 z% T. n
- Thread.sleep(ck(rt - 1000 / fps));
# J7 q8 E8 O7 y - ctx.setDebugInfo("error", 0)
1 }$ G8 J* ^4 `* B- ` - } catch (e) {
+ X* Z0 S. W- k; Y3 y6 l - ctx.setDebugInfo("error", e);
2 b. E7 d$ v4 V* l& U - }
* F. `, V/ s# n: C7 ~/ e - }1 e- `9 R0 c% x* i
- print("Thread end:" + id);1 V, p3 r9 [9 G) u# D- u
- }1 B: J3 `: E$ H, P4 @5 c
- let th = new Thread(run, "qiehuan");
: ?% \5 U! ?7 {; W6 n+ B - th.start();
6 v9 `# O* D" s. p* ] - }2 y p( M$ }3 J0 m: ?: g- V
1 B& U7 i- ~5 N! p- c- function render(ctx, state, entity) {
8 B* J4 Z" |2 S- o4 H) u+ [- ^ - state.f.tick(); y9 N3 w/ ]1 X% y( h3 J
- }
9 e- s6 S( g! T( h8 E* g) C# J - ' q" t7 K# g- U
- function dispose(ctx, state, entity) {
k/ n4 n$ `0 g# {' [1 ]3 \9 t - print("Dispose");
/ D9 ^5 i7 p* d% V6 S6 d - state.running = false;( p) ]& b' l7 R+ i% Y4 g+ p
- state.f.close();: a$ }. h2 g( H
- } t! E1 A4 W ?9 y' ] @1 N. b
8 A) P4 ~1 ~0 M& t! U0 b- function setComp(g, value) {
9 f; g7 m# n8 W. @ - g.setComposite(AlphaComposite.SrcOver.derive(value));6 d. s, b v9 m# w9 V
- }
复制代码
6 Y/ F3 W9 D: T/ m: G- e/ I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。
" m/ W. y( }7 J7 @$ Y* n" o+ E! @9 f! f1 k& b. z1 Q% D- b
+ y+ C0 f% D1 m1 J% d9 B( Q顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
: Q J# ]! e; C0 U5 F4 g# D |
|