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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。
7 w, A% o7 I, h2 {8 C, W D" y- importPackage (java.lang);- M2 x+ @2 S9 Z/ v' X: H1 P" H g; M5 ]
- importPackage (java.awt);
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- include(Resources.id("mtrsteamloco:library/code/face.js"));
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9 I8 b. ]0 V: d( h# O/ {- J- b- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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6 M( r8 Q: u8 \9 E1 J- b- function getW(str, font) {
& Q6 m. r2 a- k5 W - let frc = Resources.getFontRenderContext();# ]( c7 J* A8 m" B+ K7 X; k& s
- bounds = font.getStringBounds(str, frc);
# c) Q* p1 l+ L3 F2 a5 L - return Math.ceil(bounds.getWidth());
* [8 b3 H! W Y) ^) d' F - }
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+ e* f" l1 k. }# r% |3 T- da = (g) => {//底图绘制
9 |6 i9 h& g: N' r" }5 w% L - g.setColor(Color.BLACK);
7 m+ l! @6 D+ |1 a- D* z& t* _ - g.fillRect(0, 0, 400, 400);
# ?. R1 a6 d' Z - }6 D9 e, Y7 B8 d% n
- , G1 I$ N7 T0 ^
- db = (g) => {//上层绘制' t* I7 H- h! X
- g.setColor(Color.WHITE);$ L; G) Y: D( }# r% l
- g.fillRect(0, 0, 400, 400);: j2 t/ Q8 S3 F' R6 K6 P; Z
- g.setColor(Color.RED);; v! h Z2 ^. A. {
- g.setFont(font0);
, E/ L+ y& T5 C6 I9 n - let str = "晴纱是男娘";
: `$ q9 m% F, y% c+ W p1 S4 ^6 F - let ww = 400;
. X/ S$ v) E& C - let w = getW(str, font0);
" \# c2 R5 \2 a/ M; ], c+ B - g.drawString(str, ww / 2 - w / 2, 200);7 S5 n. v& G4 Q" \: R* R+ s$ u. h7 m
- }5 Y" W7 R3 N: g8 A/ }
* j3 b* c+ B5 V/ t9 ^& s- const mat = new Matrices();) k* V e2 _9 F
- mat.translate(0, 0.5, 0);
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- function create(ctx, state, entity) {
( F! N2 G# U( c - let info = {
6 e i7 |" b" J* Z, Y' z - ctx: ctx,. w0 I, i! g% [1 N. a
- isTrain: false,1 A2 J" t! P/ U W
- matrices: [mat],1 E6 j4 N; }9 v: F
- texture: [400, 400]," o X: m1 r8 b5 w" E$ q. m# P
- model: {) T1 g b8 x" U: `
- renderType: "light",
7 X! P: C7 H% L" Y: y5 ? X5 q - size: [1, 1],% U! D4 y3 |2 U/ g6 p, h" g3 x
- uvSize: [1, 1]
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- }
8 ]9 v6 l- t' h J, Z - let f = new Face(info);) Y- s* S2 P# O8 d
- state.f = f;
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% A( _0 E1 I0 \, I* w$ I7 d5 I" {0 g- let t = f.texture;
9 u( l* L" T* d# B - let g = t.graphics;5 L2 [7 Q$ J/ G- r8 H0 o
- state.running = true;1 Z ?. b1 t, k# @( `+ t
- let fps = 24;
9 R5 l* z n3 ` \' r - da(g);//绘制底图* E4 T/ W5 J. `0 S( m {
- t.upload();
/ o1 _; Y2 F Y - let k = 0;
4 ~. W: \2 w1 B- L1 @$ d - let ti = Date.now();; X' R2 g& n. u9 N" N: p' l
- let rt = 0;
& _7 z' r4 e i8 g5 v! f' j - smooth = (k, v) => {// 平滑变化
0 l) u2 E4 V9 b# q* d+ r- y - if (v > k) return k;1 i, K# e7 \& U) Z/ c, B8 m* z
- if (k < 0) return 0;; d5 o/ N5 `/ L. w" U( w2 q+ A
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;% P. ^& L# u$ Z% R/ R
- }
6 d% q6 u: S5 X" O0 z# l9 r - run = () => {// 新线程) _0 r/ E6 i+ b, `7 J2 S
- let id = Thread.currentThread().getId();0 n0 Q+ P7 H5 D& R7 s1 \7 u# l
- print("Thread start:" + id);
: v2 N3 O3 L, \, H I - while (state.running) {1 X& y* `4 f8 W) Y8 K) H# _+ {2 |
- try {
5 W% o' Z0 q4 Y* | - k += (Date.now() - ti) / 1000 * 0.2;# ]8 E' C8 J; q3 I' r" |. H# o. {
- ti = Date.now();2 d8 ]5 w2 P. t0 ~5 N
- if (k > 1.5) {
/ p, D# \- f9 P- h$ ^% C2 j - k = 0;
+ G; Z% x+ F9 W3 t# x - }
% v9 r7 ^7 M9 r - setComp(g, 1);
* n5 e6 y7 x0 @& X. e* E+ M - da(g);
; I0 h! y" p, ?' T! N - let kk = smooth(1, k);//平滑切换透明度- R/ L$ t! B/ X1 ^' {
- setComp(g, kk);* b$ Y+ y7 X! _" I% L+ J' z6 X! v
- db(g);
2 E4 H5 K8 ], r6 j; q& l - t.upload();
/ E- m& i x- ~- J& g/ p7 I7 ] - ctx.setDebugInfo("rt" ,Date.now() - ti);
w8 R( D' R. y9 N. W% Z9 N - ctx.setDebugInfo("k", k);
* j# P$ |- v1 q& ^, ]* Y - ctx.setDebugInfo("sm", kk);
5 g2 n0 T: a. j3 G4 U - rt = Date.now() - ti;
4 J5 ^" b0 N1 U' t - Thread.sleep(ck(rt - 1000 / fps));
* z" F) E6 r3 M/ @ - ctx.setDebugInfo("error", 0)1 b" p: C. K5 r' x
- } catch (e) {
; i7 d/ |8 u8 d/ C. f+ @. C' | - ctx.setDebugInfo("error", e);" f6 T# e z3 @3 l, m. f
- }2 h" F/ @% A F& B
- }
, W) O9 ^! Y' c, @" P - print("Thread end:" + id);
1 l+ F- o) {1 E4 C$ w% l, i - }
+ ~* t8 g. u+ k+ D - let th = new Thread(run, "qiehuan");3 s5 i4 H- E( f$ [9 k7 \% u% d! G# o0 r
- th.start();
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- function render(ctx, state, entity) {
/ \. g8 |2 n& \: Q1 c& \ - state.f.tick();
, g2 q" T* v* E, w: W6 [) d: O - }
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- function dispose(ctx, state, entity) {
1 B+ K, x" a4 _' u - print("Dispose");
) i: Y+ M: ]' N U4 N6 X8 {; q - state.running = false;) I/ T' L( z, J/ r4 S+ |
- state.f.close();# d/ K! M1 w( M$ k& |/ X
- }
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- function setComp(g, value) {! @ U9 g# r3 w
- g.setComposite(AlphaComposite.SrcOver.derive(value));
! l8 \# n6 S* A) y- v) H! e5 T - }
复制代码 $ D" m; _& \% O! _ C
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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