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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。4 J: H' J8 b8 @' V
- importPackage (java.lang);
+ |2 k* r& y1 _, O5 L - importPackage (java.awt);
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5 Q$ ^5 c9 {& Q9 a+ H- include(Resources.id("mtrsteamloco:library/code/face.js"));9 j( v) r& Y4 ?# ~
- 3 N) A. i5 @9 ]: E/ o. d9 P
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);" Q. k% z: `& J7 W4 P: O5 l
( i& Z0 j+ T3 v- function getW(str, font) {
) t' B' }8 ]. _ v3 G - let frc = Resources.getFontRenderContext();
& W7 E( V1 ]5 r3 P! d - bounds = font.getStringBounds(str, frc);
- k0 z: k8 F4 D$ u3 ^" m* Z; m- b r" F - return Math.ceil(bounds.getWidth());( O; ?* R/ j& `8 E* s! n; |8 G
- }
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R. n' W9 P2 o% T7 E% @' t- da = (g) => {//底图绘制; t1 S# o0 x4 o9 V5 d' O
- g.setColor(Color.BLACK);
: M( W0 I- |" ?9 O7 O - g.fillRect(0, 0, 400, 400);6 w- q; I+ s/ @
- }5 k& t, \7 W2 n6 O
9 L# Z9 \/ r/ X; Z! S" [8 C8 l- db = (g) => {//上层绘制
5 H3 ?+ `# t) p - g.setColor(Color.WHITE);
' _. C& J+ s& \# m9 A O - g.fillRect(0, 0, 400, 400);5 S* b7 a1 \' z) \' B
- g.setColor(Color.RED);1 e: R- d) L8 ]3 ~! g
- g.setFont(font0);* L9 l" K- Q0 X, u8 |1 w1 a+ V
- let str = "晴纱是男娘";
2 o2 ~6 L# P' ~7 Z n- j V - let ww = 400;/ @4 {6 @# Q8 x8 Y" G1 R- C
- let w = getW(str, font0);
e% r2 f' D% U5 |) } - g.drawString(str, ww / 2 - w / 2, 200);1 D% O* P# I, P
- }
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4 [, U+ _2 w; w B- const mat = new Matrices();
" x3 i9 _1 a4 ?5 a8 p$ z - mat.translate(0, 0.5, 0);
& I" w8 R# x, T' ~& m
6 C5 S" o: e' I- function create(ctx, state, entity) {
8 j/ O6 `8 B% X0 @5 I4 j - let info = {
, v+ B2 O6 e0 S0 o! E) \# d$ i - ctx: ctx,: p3 Z& W2 L$ r( ~
- isTrain: false,+ k; D1 n! Q! F" ~
- matrices: [mat],+ ^/ p, _) }# O8 i4 R& F7 N
- texture: [400, 400],1 O. P( O' z) h" N1 _. l- D
- model: {& W* q4 v& s! W( O* {% i* F+ \
- renderType: "light",) Z3 S; t6 ^# V; h1 g$ }
- size: [1, 1],
2 j5 h9 \. u0 s0 I& p( s - uvSize: [1, 1]/ P ]6 i# m, K0 [5 t2 A
- }
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- let f = new Face(info);
: V* ^0 l9 V5 [ - state.f = f;
# U* G8 S- M( Z - 9 W: l2 k" ?( B2 m( h; }
- let t = f.texture;) M2 o. w2 v) Z$ L N4 L
- let g = t.graphics;
! ^ v( h" K3 n! _) K7 B9 m3 m - state.running = true;
. H, J; B& O. A1 w3 v9 i& f8 H - let fps = 24;
# h& q7 k& U) F. T - da(g);//绘制底图
" L5 E' \& M+ |6 o1 s B' x - t.upload();
1 j$ d! w. d4 O A9 f5 d# e* ` - let k = 0;
( @) F1 }6 z" y/ A" r - let ti = Date.now();6 l1 g1 ^/ [; J
- let rt = 0;2 D. P* V3 U% t; P% h4 Q
- smooth = (k, v) => {// 平滑变化
2 o& i2 k) A g2 b% u2 O& {, \ - if (v > k) return k;
' l7 Z; P$ m G2 W7 m - if (k < 0) return 0;, e8 o, Y2 l9 p, ^
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
; n- t; l* L8 M; W/ P" A - }
" H9 B8 D& A0 N - run = () => {// 新线程
; j: [5 i) m( y4 ^' d( n - let id = Thread.currentThread().getId();
& `, K" Q3 N. p5 A( l# u+ b - print("Thread start:" + id);
+ @1 W& T) l- J6 [, B! K - while (state.running) {
* t5 Z$ R2 W# G: U/ Y - try {
* e2 V/ e7 _/ p8 L9 o - k += (Date.now() - ti) / 1000 * 0.2;/ G1 F% X, a1 E3 x6 o0 L& x
- ti = Date.now();
5 r) @9 g& H6 w; S) W. T, Y - if (k > 1.5) {9 X; \* D, c8 D6 b7 S
- k = 0;
6 C4 q9 H. o% S6 x; C0 o. Z - }
4 Y- c% M# R! R3 W$ ] - setComp(g, 1);5 A6 r1 E, c4 k& m! Z! L6 H
- da(g);
& {% {) U4 |$ P- q - let kk = smooth(1, k);//平滑切换透明度3 Y& P6 h4 D+ M9 Q* v
- setComp(g, kk);0 T+ |8 d& T5 h% b2 S5 L' y9 Y! f# L
- db(g);
2 l* v5 c: x' K, V& y8 h" | - t.upload();
* G6 \% X; @. t - ctx.setDebugInfo("rt" ,Date.now() - ti);) i f3 ?$ h; K. F- Y6 K
- ctx.setDebugInfo("k", k);
0 L4 ~3 d0 T- g J - ctx.setDebugInfo("sm", kk);) _9 t/ T9 V1 s
- rt = Date.now() - ti;2 I7 _6 d- X1 \6 Z) X5 P( C) U
- Thread.sleep(ck(rt - 1000 / fps));, X p4 K. v* r+ r/ ?6 q2 P$ W
- ctx.setDebugInfo("error", 0)3 M, K7 c U$ V2 y* Z: [ F
- } catch (e) {! u/ K- C9 `' y$ c0 r# `/ V i3 \
- ctx.setDebugInfo("error", e);5 _# T5 L$ j5 J4 L8 ~% }
- }
( l0 s' n+ S! @0 c7 s$ p6 A- F" s: m - }
4 B+ M% f9 I5 H8 _4 Z - print("Thread end:" + id);
# o+ B& f, @5 ^# c& f - }% p* }- Z2 r$ [+ ?5 s3 s! L
- let th = new Thread(run, "qiehuan");
" A: k H* ]& g0 L# o+ g6 X" S - th.start();
0 h( Z9 z3 h& d& {) ?1 w - }
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- function render(ctx, state, entity) {! C2 h3 H* H, L( _6 I
- state.f.tick();
9 }* s" A* `# _6 G3 O( W - }
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* ]' @& D* b/ X- function dispose(ctx, state, entity) {
3 y+ @8 W, Q' _! z. S9 ~+ X - print("Dispose");8 W, |/ x* c8 b3 ~
- state.running = false;
9 y# C6 e4 x3 [4 ` - state.f.close();! X! ^8 n% V0 X# m+ f" z0 L) O5 M
- }! M& B, O6 n" z! |; Z/ r5 T5 A5 d5 b
- , F& c$ f- W- B' ?( U B' @3 Y
- function setComp(g, value) {
- ~( m" |4 I+ c* ~5 \ - g.setComposite(AlphaComposite.SrcOver.derive(value));& @- }+ o- H$ x- r' H3 {
- }
复制代码 6 i0 M6 g, @, j( |: u; y
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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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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