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/ o# z. U, k& M L! V4 f0 k: ^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。
& ~/ I1 H& J$ v% H! z& }7 o- importPackage (java.lang);
1 o/ b; i1 B# @; l1 U! X2 S2 L - importPackage (java.awt);" l: y3 T4 _. r/ ^& o
) I5 Z% I/ { j! Z) {' B: j- include(Resources.id("mtrsteamloco:library/code/face.js"));
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1 A3 J& U8 O+ G9 r- E- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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- function getW(str, font) {/ v. P. V) l2 h- @- X
- let frc = Resources.getFontRenderContext();
: \$ |- F. P: j& b9 I7 Z7 w8 ~ - bounds = font.getStringBounds(str, frc);6 Y K. N9 l% Q7 r, P
- return Math.ceil(bounds.getWidth());
4 ]/ E- @0 Q, C - }
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5 a c" ]0 h5 d2 i ^% g- da = (g) => {//底图绘制. K" S5 A8 M. R) G; W
- g.setColor(Color.BLACK);
5 Q! Y( \8 X% X+ H$ p# S4 D2 y - g.fillRect(0, 0, 400, 400);; q. e8 g# i- f
- }4 [4 O8 c8 g0 g- \. E( b" d% n" I
- . {" P, ^' s6 O% W2 }
- db = (g) => {//上层绘制
3 f- ~8 g& ?! F) |4 k - g.setColor(Color.WHITE);
, C$ M5 E% P: H! Z - g.fillRect(0, 0, 400, 400);
$ a! J: B" |* o - g.setColor(Color.RED);+ u. o* D! i8 M+ p, f
- g.setFont(font0);! M0 ]8 H4 l/ D# D, Q; ?+ s
- let str = "晴纱是男娘";6 L; a/ G% ~- R" _' s' u4 i
- let ww = 400;" s" k) U9 F* X& s/ y* J$ g
- let w = getW(str, font0);
+ j1 K! @& {3 W7 b- Y5 Z4 W - g.drawString(str, ww / 2 - w / 2, 200);' h4 y& e6 U9 d
- }4 C9 h! d& F6 x- k P
- $ j* f' \9 G# V0 R; A( k% V% j- |
- const mat = new Matrices();
3 a5 N0 J& { m3 [ - mat.translate(0, 0.5, 0);& R5 r1 O9 X" Z F/ `7 A
- * J$ |5 t5 i& o5 D
- function create(ctx, state, entity) {
0 q# N3 X2 J, ~, k8 u - let info = {
# D9 C1 A. x) r: B3 W1 g( _# s - ctx: ctx,
" }: I6 [8 G% P- [" n' q - isTrain: false,
" O" i1 S0 {. x+ Z+ { - matrices: [mat],# c2 q5 T2 J5 D" x7 [% _# |
- texture: [400, 400],
y2 v; \, D" U1 f; p - model: { x" x4 H+ p3 J& v" N" ]8 k
- renderType: "light",3 q2 {+ j+ t6 G2 m7 i' j3 K% i* V
- size: [1, 1],
6 R4 R! C0 w+ {' o# T - uvSize: [1, 1]5 F% m- e# m- ?, f
- }
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- let f = new Face(info);
; x% m4 t5 S/ z Z! T - state.f = f;
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- let t = f.texture;, X- m) s U# K0 H- b
- let g = t.graphics;7 \# e! y7 k$ H( X$ [0 H
- state.running = true;
0 r: M$ O8 g, j- w5 k- ~, h - let fps = 24;0 Q# Y; l7 A% L( K5 b7 x6 U* O
- da(g);//绘制底图- d" L# H* K( o" p) b! `1 Z; w
- t.upload();
4 y' {$ v4 k. b7 b$ y& l- b0 T - let k = 0;9 F; i o+ e; h4 @: I- v
- let ti = Date.now();
/ F4 m5 m* } d- c( u - let rt = 0;
_: |2 R1 Y9 p) _, j0 L - smooth = (k, v) => {// 平滑变化2 T5 g7 M7 M9 O3 q( S
- if (v > k) return k;7 P7 ~" V3 [1 W5 y9 O
- if (k < 0) return 0;
2 Q: _' J, u# R' m { - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;. W5 A r% G1 h- X. n1 ]' G
- } ~/ @3 y1 i* D; Y* F
- run = () => {// 新线程+ j5 ~( u3 f+ p6 u, i7 e
- let id = Thread.currentThread().getId();
2 H0 f; ^5 u& P' j6 ? - print("Thread start:" + id);
0 b, f6 C1 m$ [: J0 D - while (state.running) {* J2 U7 x2 z1 h1 S) R
- try {
8 |2 }/ p! @9 w8 ?* e - k += (Date.now() - ti) / 1000 * 0.2;
' }- ^4 G! M' i: B3 c$ Y: }; o - ti = Date.now();
) J/ K& e% K& M* I8 g: w$ E - if (k > 1.5) {
$ P+ d5 y) N% j% P! P - k = 0;& m o7 _+ o U
- }
1 S8 Y+ m. n4 E: i7 C - setComp(g, 1);
( o( O; l/ d# d. z" t - da(g);
3 ~" h# m$ ~7 I3 b9 j% L - let kk = smooth(1, k);//平滑切换透明度
, ~3 L7 y8 R% _+ K! S5 s - setComp(g, kk);' p% C1 w5 z, v4 Q9 _2 d/ @/ i/ w
- db(g);
- \5 a q: t" f1 v6 _/ @ - t.upload();
7 I& ]& @! V p/ f' O1 i3 H7 a G K - ctx.setDebugInfo("rt" ,Date.now() - ti);& H: H; R; ?6 g$ ?
- ctx.setDebugInfo("k", k);
5 o9 s$ N2 \, q6 T" y* |* x9 M# c - ctx.setDebugInfo("sm", kk);
5 _: ?, g7 p" G2 ~: x# ]; R. p( B - rt = Date.now() - ti;
- X3 Z& }; d9 s# B - Thread.sleep(ck(rt - 1000 / fps));
5 a( q+ F; I, \4 M: { - ctx.setDebugInfo("error", 0)9 f3 }# w0 d4 @0 z5 i q
- } catch (e) {) h6 k- [- C& @6 b1 M1 \: R7 v
- ctx.setDebugInfo("error", e);1 Z: H7 j g4 F4 A( Y
- }( P* ~# l# a2 I% q. e. L
- }
5 z6 [: u& `' v- p2 Z - print("Thread end:" + id);
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- let th = new Thread(run, "qiehuan");3 k% a) P/ R- T/ r& r5 K6 S
- th.start();
/ I6 w! f/ [( `# U9 ~ - }
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- function render(ctx, state, entity) {
5 n, w( A0 ?9 c; ]8 c1 ^ - state.f.tick();% W5 V- ^3 S- h# L! s* f1 b: U$ _
- }% o2 `; {* j0 s# k! E, |( Q
- 3 d0 g3 i- C9 P) g
- function dispose(ctx, state, entity) {
. _: x- `7 ]3 @/ G N2 t - print("Dispose");
" u t6 t1 ^* m" Q U - state.running = false;
: G1 n4 v8 ?0 q; _4 _9 K - state.f.close();3 l" o8 m: @$ X0 A
- }6 J J4 Y; |4 u+ a( m$ D% k& _7 m9 c
6 `. W% Z5 ]& ?0 n0 N# x) `! c& M- b- function setComp(g, value) {
7 J% ?/ l9 Y& `2 G - g.setComposite(AlphaComposite.SrcOver.derive(value));$ [, W8 Q- s# G8 Z/ M0 e
- }
复制代码
7 g! X) T) e: {& o6 g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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( j4 S" u& N4 m) E2 F) N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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