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3 `5 V u: B* D# O5 ?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。6 ~; k* @$ ~3 L' f/ k- u: \
- importPackage (java.lang);
* U, N( C4 z1 O6 @ - importPackage (java.awt);2 d- ?; E3 f/ l4 L5 j/ Q
3 F. |+ ^# E6 U- include(Resources.id("mtrsteamloco:library/code/face.js"));3 o, o- H9 c ~9 ~! ~/ m# N v
- V. m1 y& G8 |2 }+ {
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
) `# m# [! \7 ]9 w8 y5 N: l
7 Y5 B; {& v* g p- function getW(str, font) {( _' Y( Q. |1 ^% v2 x. Z8 Y ~9 l
- let frc = Resources.getFontRenderContext();
0 d$ f8 [8 {. T, C& \: S - bounds = font.getStringBounds(str, frc);
- \/ x5 u4 _7 `! Z2 z0 p: Z6 [ - return Math.ceil(bounds.getWidth());
* _( `+ \$ ?/ R4 _ - }
+ m, F) z( M. T9 \. ~( k+ G2 r4 i9 Q
5 a/ r, `# Z, e3 |- da = (g) => {//底图绘制
7 Q" W; e- L, o0 h% P - g.setColor(Color.BLACK);+ y7 O; s, E+ G. Y
- g.fillRect(0, 0, 400, 400);0 |3 c2 H p, u5 S
- }
9 i# }5 n' L* [ i5 v& o
$ E$ P7 J9 b+ p5 e$ T S* G- db = (g) => {//上层绘制) n+ O9 k' e n0 f7 V
- g.setColor(Color.WHITE);
8 b( _ W3 U+ J( o# T - g.fillRect(0, 0, 400, 400);6 \1 T9 O7 P2 {
- g.setColor(Color.RED);
! L; o! i, N" }' t# D& ? - g.setFont(font0);
4 M3 C2 q: m5 T- K7 \0 X - let str = "晴纱是男娘";5 B7 o+ L7 e: B
- let ww = 400;5 @, L7 h, H; }4 ~' ~# A6 G# [
- let w = getW(str, font0);
" W8 s. `! [/ [# l8 J" V) c - g.drawString(str, ww / 2 - w / 2, 200);# q5 O) h) f) O3 J7 _. B* b( s
- }
: Q$ f9 o' B+ u2 b2 I9 @0 a
8 W/ r' E( z& p' G R, o s- const mat = new Matrices();
0 H2 {( O s, X3 e( L& Z& G - mat.translate(0, 0.5, 0);
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- function create(ctx, state, entity) {& g% M) D& i3 d4 u C) B1 C1 v8 A% Y6 h0 c
- let info = {4 S7 z" E! b: A8 j
- ctx: ctx, Z, X1 y3 d4 i" f6 X% t% j
- isTrain: false,
* X; K, e% @% x$ M - matrices: [mat],0 r/ c: F! x) U+ k. P2 [
- texture: [400, 400],
' v- l: o) I8 X+ T5 A1 h% Q - model: {' @- [# F) d/ P7 q
- renderType: "light",
9 O0 H( y' H2 ~, e3 i' G8 ?: ^. a; R9 n - size: [1, 1],5 \9 F% @, S' v0 Q1 P
- uvSize: [1, 1]+ }# d# o5 b+ t8 y- [
- }4 |3 j7 R h7 q. f `0 g
- } m6 O y5 K# }4 | a0 `
- let f = new Face(info);
; x# |) l5 T; W, T% m9 g2 V9 ]1 R - state.f = f;: r& i0 E2 I2 [/ t% r. v
# Y# t4 ^0 N# x3 v& Y- let t = f.texture;
; `& C7 A% w% V* u. F - let g = t.graphics;
9 _7 h* O+ ^$ k: a; o7 ` - state.running = true;
. @: r x- l" {4 U! [ - let fps = 24;$ r& S7 m/ M0 l* O
- da(g);//绘制底图! O; z: H# a6 }! H' c4 J% B0 c4 P
- t.upload();
8 `2 k$ _6 [5 H' e: _ - let k = 0;
. i- v& n$ ]$ J. A - let ti = Date.now();' v8 f7 ~# L% O/ @
- let rt = 0;
: M8 z6 ~% J, G+ D7 ?/ o0 h - smooth = (k, v) => {// 平滑变化, _9 T4 }! H9 T8 X( ?/ S7 d
- if (v > k) return k;) H$ [# q" e! ]2 r
- if (k < 0) return 0;! J6 T+ C8 L% Y f
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
0 {# Z/ a% g+ E. e - }
* p1 d* E8 N( V' O - run = () => {// 新线程- H' c6 o: J% t$ ^) H
- let id = Thread.currentThread().getId();
$ I" C, N! D; F7 b* s% F) T/ @ - print("Thread start:" + id); b0 q; N! }0 S
- while (state.running) {
8 ?. c7 p+ f5 B - try {
0 i q' K2 J' ^1 @$ I - k += (Date.now() - ti) / 1000 * 0.2;
: C, k U7 W/ f+ K. { - ti = Date.now();$ N! _4 F- |* }' c- \/ ?! M
- if (k > 1.5) {3 j4 R1 a% M4 t; Y: q7 K
- k = 0;" s" [( n+ T& E* L) R
- }
3 O7 u' {( F9 D4 q \ - setComp(g, 1);% S- r$ W3 ^2 t% p) c1 a& f1 ~1 r5 J
- da(g);0 U$ m3 T2 p- a9 b+ \7 ^
- let kk = smooth(1, k);//平滑切换透明度. J7 ~- q5 ~! ~. E/ U! x8 z3 R3 \
- setComp(g, kk);5 I8 a& q0 N4 W" v
- db(g);
4 h2 z7 M7 p7 t) `8 M - t.upload();+ d3 N# v, P. m0 i4 k2 y' [
- ctx.setDebugInfo("rt" ,Date.now() - ti);
T* C' j% M9 Y5 X# p- x - ctx.setDebugInfo("k", k);
5 N- f+ t; k. Y7 r+ P6 v" Y( a - ctx.setDebugInfo("sm", kk);
" p; u( r5 v+ | - rt = Date.now() - ti;% _% e$ C; q1 i+ S: X) Q7 }
- Thread.sleep(ck(rt - 1000 / fps));7 \9 H) j. V( b2 o% T; h4 M! X$ p
- ctx.setDebugInfo("error", 0)9 u% f) X8 n' [$ t
- } catch (e) {2 w+ L) g. }$ I- C. p6 i: E
- ctx.setDebugInfo("error", e);
9 W! W, o9 }' U6 y% L. w - }
1 Q% F# N, m+ q% E - }+ t" i, g3 `& P. Q
- print("Thread end:" + id);
7 r, E5 @ ^5 t" Y$ K! z% J - }- O) S5 s3 d! i0 X
- let th = new Thread(run, "qiehuan");
5 b+ W9 {1 W3 {0 P4 k - th.start();
F$ ~) [" b! e% C0 Y - }
7 y/ j4 d7 k. P e) s+ j - $ W- x c6 s [5 k; W8 w
- function render(ctx, state, entity) {
( @ J4 k m2 R; t9 T# @" A v - state.f.tick();( B9 q6 R8 x# V* r
- }
' s) g+ s, c% _+ h$ |9 w% T
( J( q: z8 `9 L: {9 ]: `$ Q- function dispose(ctx, state, entity) {# A+ ]( G) I7 M. l: {2 F
- print("Dispose");' C9 ]1 @ c4 K# n
- state.running = false;
* ~$ X- O r" m% }1 K - state.f.close();! j. T+ q9 w8 _9 U) |
- }3 i, A; m' P `4 [2 y2 ?
- 8 X* n1 Z6 w4 I) P- T0 A% w u
- function setComp(g, value) {* N5 h$ g4 m: [" x/ U( w3 e: x# J
- g.setComposite(AlphaComposite.SrcOver.derive(value));0 V2 D9 y/ ~9 B" L, s" @
- }
复制代码
`. Z: h6 J w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。 B" A) `. U6 {5 h8 _4 o+ d
8 V/ a K. d! m' C1 \+ s/ F0 B. y' ^9 f/ K0 M. R
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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