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* i% h' D0 R( f, Q9 g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。: u# e; Y0 ~3 ?7 F/ U
- importPackage (java.lang);
- ~* s" C* N3 k# m; I - importPackage (java.awt);
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- include(Resources.id("mtrsteamloco:library/code/face.js"));
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" o2 U( O% u# ]2 W }* l- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
+ P4 w6 o1 X0 q0 X5 O
- z/ J! P2 v9 x: Q) W7 N- g7 |- function getW(str, font) {
* F0 U& E. p. }8 H) s - let frc = Resources.getFontRenderContext();
2 E( r) g( n0 t+ U% Z( r - bounds = font.getStringBounds(str, frc);
* a* g( H: t$ d9 f" M( P4 a, a - return Math.ceil(bounds.getWidth());
) ]/ V+ X0 s6 ~$ p6 y - }
! C0 \% y6 A& H0 v - 7 N% V3 Z/ f3 u1 K9 q! l$ P8 ]
- da = (g) => {//底图绘制, w1 B x7 Y* \& A1 N
- g.setColor(Color.BLACK);1 W7 a5 _4 I+ U: d
- g.fillRect(0, 0, 400, 400);
! _" c- B# M0 x/ y - }
% M+ i8 s4 h/ s. G, f# g2 v" [
# P6 X7 P h2 Y" a3 J- db = (g) => {//上层绘制2 c1 S& v1 w& P* a
- g.setColor(Color.WHITE);
. r$ M/ r# \- @ - g.fillRect(0, 0, 400, 400);% `- u+ n6 S t1 R1 H
- g.setColor(Color.RED);: q9 v: T3 G5 c, O2 X- w
- g.setFont(font0);( E9 N. @6 |5 g0 c8 G8 K5 I x: I, u
- let str = "晴纱是男娘";
5 L! s2 t$ O9 c - let ww = 400;6 g& @& t9 ]: @. `- b" o: h
- let w = getW(str, font0);
% ?4 c; O5 a9 U - g.drawString(str, ww / 2 - w / 2, 200);
9 e. p/ M6 I) O - }
+ b- z9 a/ U% Z( b3 Y' S
7 r/ l* c, c' p: E6 v$ y" n, e- const mat = new Matrices();0 {# a7 H" w! M4 k
- mat.translate(0, 0.5, 0);& a0 i" ` K- z$ s* D% \
- $ A5 M- s7 v* _* g1 r2 L
- function create(ctx, state, entity) {5 C7 ^. m) P+ _ T' ~
- let info = {! J/ T$ X2 I4 X1 X! V
- ctx: ctx,
; n) E/ y& I" p4 c - isTrain: false,6 O0 n% L4 \4 p4 [
- matrices: [mat],( Q3 H8 f1 a( n
- texture: [400, 400],. p% T ?; b o. p y4 [2 E4 E/ E$ y
- model: {
% B* {' ]( H) c8 K2 \ - renderType: "light"," U' c* c" c. B! v5 K' Q+ J4 B
- size: [1, 1],
, U% X/ ^7 R$ N) G - uvSize: [1, 1]) u% q, @! ?3 G
- }
. E# C8 m) d) }; E, E# ?0 n - }
" |9 T& l9 \3 | - let f = new Face(info);
) ^# M" a+ x |6 U9 ^ - state.f = f;% V2 N# }( k5 i2 e; l {6 O
, V# j6 [( i7 J5 u6 e0 A$ A3 N- let t = f.texture;
8 {3 y8 L/ ^$ E9 ~ - let g = t.graphics;
5 n3 x" s9 N4 ?9 j - state.running = true;6 h5 z/ Y A4 q" s$ s
- let fps = 24;
) o( I$ V( E$ E d7 R, E5 x3 a/ v - da(g);//绘制底图& O7 ?: o9 a" r! E2 g0 X: L0 a
- t.upload();9 b9 _$ g2 f! w
- let k = 0;
# B) X5 `( ^, n - let ti = Date.now();+ s1 R) T5 x. `8 l" c
- let rt = 0;
, w h% t: o) G" t4 l - smooth = (k, v) => {// 平滑变化7 r$ r, s; G) n- {& D9 X# G
- if (v > k) return k;
$ ~% @ l1 E5 v8 d0 w - if (k < 0) return 0;- y/ P, R: O- V
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k; b: H. R: Q0 k ^
- }
: P) V9 g, Y8 T! H - run = () => {// 新线程1 i% |5 h: }( v0 T$ a5 [
- let id = Thread.currentThread().getId();
n+ J' Z5 o5 s - print("Thread start:" + id);
- Q- b$ W# M( P - while (state.running) {# _3 W ^; r% \1 w3 \
- try {
5 z5 x+ Z c$ s5 @ - k += (Date.now() - ti) / 1000 * 0.2;
' K7 e% U$ M+ X* j% x - ti = Date.now();* K4 h% M9 e$ _0 g8 @8 [! r
- if (k > 1.5) {% Z* m- [, H9 L$ J# v
- k = 0;
9 F' `; l" S5 E% k, _ - }7 \, s: [/ e$ c5 X$ u- t
- setComp(g, 1);
- Z% \5 X8 W8 R3 T4 E6 ]; L - da(g);
' r4 \3 `: s' x$ D6 `% K- R9 x - let kk = smooth(1, k);//平滑切换透明度2 W- t8 b7 B6 P5 M& c
- setComp(g, kk);+ u# h# S% |3 [# U, a
- db(g);5 L! i% |( G8 Z
- t.upload();) l6 f1 h8 s# s9 N. k8 y7 }& d
- ctx.setDebugInfo("rt" ,Date.now() - ti);5 v0 o1 Q( h. X+ O3 X
- ctx.setDebugInfo("k", k);% o8 C Z0 l) { E
- ctx.setDebugInfo("sm", kk);7 v4 d( E4 P3 m4 j! Q* w
- rt = Date.now() - ti;
9 ]* D* X. y9 `* o" q - Thread.sleep(ck(rt - 1000 / fps));
) N- E J3 ^' e, v" Y7 F - ctx.setDebugInfo("error", 0)+ q; b2 Q+ m% H) V$ d* M
- } catch (e) {
: V$ s" x# @0 T - ctx.setDebugInfo("error", e);3 B8 r' B! @9 N+ C
- }7 n A3 g6 L, Q0 [, }8 y
- }7 ?3 e& Z# F' f/ ?% U8 v- [1 E
- print("Thread end:" + id);
+ z8 {0 f! o# ^' ? - }
: F6 U: z, Z7 }3 N - let th = new Thread(run, "qiehuan");
5 v4 {) o" s: J/ \ - th.start();
5 C5 R3 F5 n/ B7 L) E2 j3 l/ m3 H - }
$ b' ~8 J3 n. ]
1 y$ E7 k. R; ~) [ ~( ?& H- function render(ctx, state, entity) {
* U+ W7 @; q2 O' W( T9 T$ s% @ - state.f.tick();9 @$ z6 E5 g2 d- R7 R
- }
" F6 R* h! d, j) z
* O) [/ @+ w- y x8 J P7 X- function dispose(ctx, state, entity) {
8 {( T' s6 T- A( t' w7 R - print("Dispose");# E4 s$ l* H+ x% E$ d0 x; m
- state.running = false;7 y$ @& X+ X) I" { n; l* _
- state.f.close();4 X2 t2 b2 T; P: M
- }: D$ p+ M$ [, B! J- G
/ g2 N& g" S$ S9 G8 R- function setComp(g, value) {
' T) I! C3 `: G! U - g.setComposite(AlphaComposite.SrcOver.derive(value));) s5 c, r- q2 \1 g8 W' j( S
- }
复制代码
: c' Z1 E" |2 w0 J7 ?% {, Y; 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。
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( I4 g! |% `/ d& _7 c. S, ^7 {
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)- [3 ^5 D! t# H) Q# m
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