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G9 F R& Y6 F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。) ~& J2 i1 m3 `
- importPackage (java.lang);
0 D: S' _& X# b* P - importPackage (java.awt);
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- include(Resources.id("mtrsteamloco:library/code/face.js"));1 t# _; |: k( d9 b
; d+ \5 l1 K$ r" O' J& @- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);6 }. H( d8 j; e: h: }- V+ E
- ) B* K/ C* O% \9 h; B
- function getW(str, font) {- l4 u& h/ f5 \9 j
- let frc = Resources.getFontRenderContext();* r3 `2 c6 W) g+ }+ q
- bounds = font.getStringBounds(str, frc);
( p3 y2 D, |. r0 ~" a' u4 k - return Math.ceil(bounds.getWidth());
) d; n8 _: j2 Y& i T - }
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- da = (g) => {//底图绘制0 V& m$ w1 P; T4 D$ N
- g.setColor(Color.BLACK);
/ p# k( j) T$ N7 S5 V. n - g.fillRect(0, 0, 400, 400);4 e$ K/ v! N4 f' e6 L4 [
- }/ {: Z: X7 f- C& n3 f, @
+ ~& i0 W2 Y0 i- db = (g) => {//上层绘制6 k: ~! X# ^) D/ I8 O& ]- U
- g.setColor(Color.WHITE);9 m8 [2 Y+ L) M" ^) c* A. z4 B
- g.fillRect(0, 0, 400, 400);
0 u/ z# p( d& J - g.setColor(Color.RED);
: y( F; ~5 w2 a, H - g.setFont(font0);
& m9 [# g! c) a. v0 l$ x3 G0 @ - let str = "晴纱是男娘";0 _! n3 A" A% D" ?
- let ww = 400;
; a. z$ u% L* p- x- ^ - let w = getW(str, font0);
( x8 \7 ?$ W+ k8 y. |: N7 K( Y8 D - g.drawString(str, ww / 2 - w / 2, 200);
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% T* P' ? N8 O4 G" X! J- const mat = new Matrices();
, A- z) A; [; H' k% h2 V3 H6 ?" [2 g0 W - mat.translate(0, 0.5, 0);
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) a) m' d8 x# v! j) R5 J$ t5 F- function create(ctx, state, entity) {0 i6 c/ Z2 m: B- [0 |
- let info = {6 Z$ y, |+ l, k+ L, s& f
- ctx: ctx,7 O: M" p1 V8 T7 |; j
- isTrain: false," s1 E, S! m* C
- matrices: [mat],; d I3 U% X ]5 D7 X4 s; X
- texture: [400, 400],* H3 l- {( |9 V# \3 S5 d- w
- model: {
# _1 G; P, H) U - renderType: "light",7 C6 S( b: P9 s* N7 c
- size: [1, 1],3 `3 v0 v# G- q/ [; ]
- uvSize: [1, 1]
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- }
3 Q3 Z+ _ d. h$ ~) \ - let f = new Face(info);! ]8 P$ m6 X( }- C
- state.f = f;1 F/ j! x% G& w- A u4 H
7 J( ?% B6 `6 `% P% L- let t = f.texture;& {/ {- i3 g+ b# s3 i1 e1 U
- let g = t.graphics;
$ u2 X( Y6 H5 b" e9 l6 C/ l8 ` - state.running = true;
/ e$ [" w( L! M* m+ o4 F - let fps = 24;$ `' U9 P3 Q/ H) U
- da(g);//绘制底图$ A/ }& T! r% h: G2 X1 \
- t.upload();
! R& T. y: k) v1 D - let k = 0;7 W. I, o8 M; I& ^; [
- let ti = Date.now();3 k9 p5 D5 ~' i( F$ a) a" M8 n) {
- let rt = 0;. ^$ b- f# g+ `; e
- smooth = (k, v) => {// 平滑变化 V( c3 @$ |) r3 ]. ~
- if (v > k) return k;9 L. }* I1 q7 v$ x" o3 h" T
- if (k < 0) return 0;
& v% P( S; y( W; C6 B( L7 | - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;- M# n/ I* s. N5 g r
- }, n. H; T) B% [4 a/ u
- run = () => {// 新线程
4 k8 t! m' o0 G x& y' \$ ?4 H$ q - let id = Thread.currentThread().getId();
' B1 X0 f4 }8 I; g - print("Thread start:" + id);
+ p- o/ ~: F q) K/ V k+ B - while (state.running) {$ B+ L6 Y' q& y* q7 f" A
- try {
+ z" C8 P& G( v - k += (Date.now() - ti) / 1000 * 0.2;
' p5 l+ D% I3 E* c$ x8 w - ti = Date.now();
: }* @2 \( C5 A* \. H0 B - if (k > 1.5) {8 g/ P5 h5 X i) m7 K0 |& B5 q" d
- k = 0;
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- setComp(g, 1);: v; @ {4 i3 U8 k
- da(g);
5 |6 E9 R% l0 n! u5 r - let kk = smooth(1, k);//平滑切换透明度
9 ~' H8 M8 J0 L; s5 w - setComp(g, kk);3 R1 P. S$ [/ \! K
- db(g);8 i9 w0 ?( R6 R: ^7 d
- t.upload();5 q( I6 \, B' ^1 c$ [* ]" Y
- ctx.setDebugInfo("rt" ,Date.now() - ti);) Q$ n3 L/ v" a: o; \7 ?) \1 H; U" H
- ctx.setDebugInfo("k", k);
* Z$ a& F( ?/ B - ctx.setDebugInfo("sm", kk);
7 s6 p3 u5 l; \: _& g( g - rt = Date.now() - ti;, u! \& a5 y9 E- {* Y$ r
- Thread.sleep(ck(rt - 1000 / fps));$ t6 _7 G; [7 r3 Q$ }
- ctx.setDebugInfo("error", 0)3 s( q- f g' m
- } catch (e) {
/ a, m* Y% L) J# p - ctx.setDebugInfo("error", e);( s: h8 U$ n2 G, y( [0 d9 D; p
- }
0 t6 n8 {9 I) x' L - }
$ R! ] ]) F( Z( R' Q - print("Thread end:" + id);- z/ C8 R1 I, V6 _& |3 l
- }! v7 I2 x& } S: s7 B
- let th = new Thread(run, "qiehuan");4 G: P5 U6 ^9 F# I& F- N9 ] m
- th.start();
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, q3 p9 `4 y( [5 A; m" v- function render(ctx, state, entity) {# w' u7 ]' ]; V8 p1 @
- state.f.tick();4 {0 }1 h8 t; p. T% [7 w9 {$ Q' x
- }0 @8 j* B+ l5 M7 T2 j7 V6 a
% B C7 O$ p o% y1 }" n6 A- function dispose(ctx, state, entity) {6 x, H8 E7 e# j/ I; r! j" I- k* I
- print("Dispose");; e9 N; F- H" ~
- state.running = false;
9 y3 a! M5 r0 l& R - state.f.close();' l: o9 n1 _9 [% _2 a' v
- }
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- function setComp(g, value) {0 R& j- d0 c- P! K) T% Q2 @% a
- g.setComposite(AlphaComposite.SrcOver.derive(value));
1 }! U, Z2 T& i) N5 D/ ^5 d - }
复制代码 ' ^ R3 K( G$ {! U0 H( 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。
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4 k) w, o8 m# L6 x顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
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