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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。2 h, _1 [7 K2 O+ `( \3 Y: s- U
- importPackage (java.lang);9 M7 ?1 e; _. n& z Z K3 @
- importPackage (java.awt);7 D- f- v, X$ ~- Q4 Y# r+ {
- 0 A- Q& x/ c9 J% h' r! w
- include(Resources.id("mtrsteamloco:library/code/face.js"));
* j1 L5 l( O1 k$ C
! g* |* _# F: u- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);1 i z, x9 O% o5 A
- ) r3 H" R _: r6 h. [4 F
- function getW(str, font) {
5 u" u( v( r) j* k! Y( a - let frc = Resources.getFontRenderContext();! w" k6 m5 \( |0 u* ^: v9 A
- bounds = font.getStringBounds(str, frc);
* H8 [0 {7 X9 d. J. @ - return Math.ceil(bounds.getWidth());& I7 J( R3 m/ b' r2 r: Z7 p) l4 Z
- }( [: J. X" |4 X3 {0 Z# k
" }, |# J1 ]! X/ f9 v- da = (g) => {//底图绘制
/ G% w) K3 M/ v/ W - g.setColor(Color.BLACK);7 o3 L1 k' r7 ~' |% j8 z+ `
- g.fillRect(0, 0, 400, 400); K, ^4 @) Q8 J6 g' V0 a
- }
- L/ U- W- t2 E3 R- ?
7 v( d2 C9 b- K/ V# Q: }6 { X- db = (g) => {//上层绘制3 o% q9 w3 m% \) r) j, x
- g.setColor(Color.WHITE);7 o+ \$ H$ j5 S; U1 I' e
- g.fillRect(0, 0, 400, 400);
@2 c. E/ \/ w7 a1 j* `) S* v - g.setColor(Color.RED);& a' T$ x+ M+ i2 G. Y) i; _
- g.setFont(font0);' U% { O% S1 q
- let str = "晴纱是男娘";* ^4 b; `+ _/ X4 v. z$ {6 z3 h
- let ww = 400;$ M! v- U7 `: r1 |; a
- let w = getW(str, font0);8 E9 N- |3 q6 \
- g.drawString(str, ww / 2 - w / 2, 200);* q8 a- E$ [( }7 m, \8 S! ^
- }. a$ c/ l7 H( i
4 q0 O" b% ?7 B+ M! G- const mat = new Matrices();0 s! C+ T! \, x5 G
- mat.translate(0, 0.5, 0);
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6 C% \* a# O$ y3 s- q" e- function create(ctx, state, entity) {
+ q7 j3 n6 [; j: U3 n! |) {# b - let info = {/ b/ }. \* S2 @, w5 U
- ctx: ctx,$ n$ ^; E: g+ t# n8 B$ t7 j, D
- isTrain: false,
) v6 M+ {. C B* V C - matrices: [mat],
9 V1 _! x4 u: j+ m - texture: [400, 400],
9 s% p& S* p5 W4 }' _- A - model: {
4 o1 R8 L2 x# [- b) z) R, s - renderType: "light",* s. g% i! Z2 C @. ^+ i
- size: [1, 1],
5 W' I) |2 q5 Q3 Z - uvSize: [1, 1]
6 k3 E9 f1 u% e2 d! A' N3 d - }
! r' [: n( m) K" x3 i3 `' U - }
5 W: L5 Y7 t9 j5 T1 I& y9 n3 u - let f = new Face(info);
' a+ [# `- k% `; {! h2 b: l% R5 N - state.f = f;9 u' r. l, _4 f4 H* G, }/ @0 u* [
1 j- T4 A# U, U- let t = f.texture;
6 R/ K9 `4 F! w3 k - let g = t.graphics;) h% g( t5 Y: A* y% z
- state.running = true;0 W1 U) ?6 O' j# n4 q: d
- let fps = 24;
) T/ ?. \: _, ?; F - da(g);//绘制底图
3 D' s) y0 O& V4 z, K* o - t.upload();- Q" M! H- X1 q& X" [* h$ @1 |! N
- let k = 0;
& u L4 N! e2 W - let ti = Date.now();
( Q* @6 q+ W% u/ o9 z - let rt = 0;% z, e& n# x U Y) g
- smooth = (k, v) => {// 平滑变化
+ K( p c& S/ o) N; j - if (v > k) return k;- |( H @+ Y! T/ Y- Z, n
- if (k < 0) return 0;
8 _$ T( f8 W; H3 T0 _. {1 H - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;- _5 h& ?4 C" q! P6 o3 f' ^ L: Y' m
- } B" Y+ O0 h% F
- run = () => {// 新线程0 {! z8 j6 a! e* o Y: h
- let id = Thread.currentThread().getId();8 y" f: b' c6 R1 ?$ W: ?6 @
- print("Thread start:" + id);
/ k' f3 d1 G2 E k* A2 }7 Y1 i - while (state.running) {& U5 I8 m5 A; k3 l' \! J; I
- try {
2 f! a3 \* O6 U6 U3 D - k += (Date.now() - ti) / 1000 * 0.2;2 r+ |- @) |6 B# |% _) @
- ti = Date.now();
9 G7 o" H- `& x7 M4 { - if (k > 1.5) {
! @8 N' V3 R% |* J& Q% p. l - k = 0;
$ { n, v0 h7 M" }& d4 |/ J0 O - }
' P& k' }) J# {$ S, A- w+ H: g - setComp(g, 1);
; V3 b4 a0 T3 X - da(g);' `2 ^, |, j+ E' d6 z; K. u/ y) X
- let kk = smooth(1, k);//平滑切换透明度! P# _: Q) p9 V6 r. H
- setComp(g, kk);0 d/ {. S0 B% e' P
- db(g);
" E& t: Y7 z) y0 D - t.upload();
( E: H( @+ j3 @- X - ctx.setDebugInfo("rt" ,Date.now() - ti);
) C- h, D# d7 M( C4 a) e" N! s - ctx.setDebugInfo("k", k);
* B" [0 Q- \+ o1 t- A, q0 ?% O - ctx.setDebugInfo("sm", kk);, O2 Y1 N) _9 }7 M0 w# Q
- rt = Date.now() - ti;
. h6 A: w0 j1 z/ F - Thread.sleep(ck(rt - 1000 / fps));- G$ B) N/ x" w$ q/ p, S
- ctx.setDebugInfo("error", 0)$ h3 c7 |6 }/ ?
- } catch (e) {7 T3 j! m) s- l" M. \
- ctx.setDebugInfo("error", e);& ~ K, P; `. c9 `( A
- }
& x9 M3 p F A- v" m; N - }
|& ?" I1 P' s- p# N - print("Thread end:" + id);; w$ z( o% k4 Q0 Y) b I+ V. [
- }
E# u: W$ t, R m ~ - let th = new Thread(run, "qiehuan");
+ |5 T+ r6 ?' x& T - th.start();* ~! T5 x7 g5 F5 b; M
- }
. O5 I, J* N! f - 4 @$ L% B |$ Z
- function render(ctx, state, entity) {
/ M4 o' K4 ]3 G$ f5 G - state.f.tick();
( _# }3 O; y( ~! [& t, j/ I6 d - }
0 w6 o" `. O5 K$ Q, k& Y1 H& B, O - : V4 s8 H2 e" r
- function dispose(ctx, state, entity) {
/ `: o0 E- c9 w$ l - print("Dispose");
% b6 }5 x* E/ o( e2 s% r) ] - state.running = false;
0 H0 F. H2 w; e" p - state.f.close();: k+ U' R" F/ ]0 H% e, q6 v3 i
- }
) |6 ?" o% N4 [( ~3 Z+ Z0 E X2 ]) e - 8 O7 H. p+ h4 k3 p
- function setComp(g, value) {
% {8 e9 Z; L( M( a6 r$ x - g.setComposite(AlphaComposite.SrcOver.derive(value));9 K3 n& k; Y8 _( o9 [ I
- }
复制代码
6 J9 h! X9 e' d' |- `. x0 d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。* P$ ~; ~) N* n8 Y# {, i- x
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" c- L* O2 s9 E A0 O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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