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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。 q1 y( l. I5 K0 \% r+ s& n
- importPackage (java.lang);
# o, d) b, \; J' n6 V6 C - importPackage (java.awt);
/ j9 s- S! ?( i" ]7 {
- s/ ]9 ^4 S8 [* `) v" H- include(Resources.id("mtrsteamloco:library/code/face.js"));! [" [3 m1 s: l
" \5 c6 {( ^+ A" |2 G' L5 d8 J4 i- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);# N, N! o5 j3 q0 ], ~
- 8 K+ l, R5 l+ R' l. W
- function getW(str, font) {3 {6 S& X4 F, f1 w6 _1 ^ M% G
- let frc = Resources.getFontRenderContext();* Q& b2 @7 N; @- p2 ~
- bounds = font.getStringBounds(str, frc);
& S: M5 `; V3 e/ u! m - return Math.ceil(bounds.getWidth());9 Q# i. R2 T* H
- }7 v. ~) e2 G5 `4 k2 P) x5 N8 q
- & P9 Y9 ~8 W* O$ J
- da = (g) => {//底图绘制
2 d+ N3 f; j a, }' [ - g.setColor(Color.BLACK);
7 {4 Y [* z0 G6 q- p" w - g.fillRect(0, 0, 400, 400);
8 F7 u7 X* N9 Z+ A8 ] - }' ~/ K" j( w& E+ G) b
- & i' _7 c" O7 A! |! I
- db = (g) => {//上层绘制
& ^5 R$ j1 i0 l* U$ R: l& { - g.setColor(Color.WHITE);
# b2 e! y; u0 E" X2 v/ q& Y - g.fillRect(0, 0, 400, 400);" h5 g+ K4 t% x$ }5 c1 O5 j, n2 u
- g.setColor(Color.RED);
; _6 g" z- ?8 l - g.setFont(font0);# N/ I' G/ m0 s, o7 `0 z* N
- let str = "晴纱是男娘";
5 |+ H- w0 f7 K C9 C' ^) o# I - let ww = 400;
. Y% V: t7 c' s% j. p - let w = getW(str, font0);4 L, B; o: C1 P; N8 F
- g.drawString(str, ww / 2 - w / 2, 200);
7 X( E2 z, b* J5 _8 I; H7 ] - }
7 j/ j3 t$ |8 g
* t i% Y# t4 v5 c- const mat = new Matrices();( m- M% L+ C$ f8 t* h
- mat.translate(0, 0.5, 0);
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3 t- Q3 r5 j) h7 F- function create(ctx, state, entity) {
+ ^# ]" K b8 g4 Q" { - let info = {
' t) j1 \! L7 h2 [3 ` - ctx: ctx,
: h0 y* \6 L5 R/ O/ ^, a8 @ - isTrain: false,
8 l2 A i$ n, m( k5 V1 B - matrices: [mat],. |4 ]. X1 A, O0 t7 F; b+ \$ a
- texture: [400, 400],
, c1 N" _$ I" @. l, `& } - model: {$ O8 F1 m. J# B4 y
- renderType: "light",( S3 k0 W$ a# e; I! w
- size: [1, 1],
6 j8 B4 r7 z) ^9 }$ K v$ U - uvSize: [1, 1]
, C0 Q$ c* I; ^4 a - }& A. h! N1 }4 K; u' o- [
- }
; A7 @% x/ |* |& {% Z" @ - let f = new Face(info);, B& G& g* H0 r* k1 H
- state.f = f;9 l+ u; b$ C6 L; [& y- H6 P
6 u$ x0 j& S8 W& X& N, s. `- let t = f.texture;
+ @0 C1 l9 R4 X4 d - let g = t.graphics;
- _2 Q, h7 I8 z - state.running = true;* T( S q; \6 i7 I$ n3 ~
- let fps = 24;
! Q' {1 f. l% d4 R6 {6 l6 J7 s - da(g);//绘制底图% \3 Y7 W9 c# {0 ?+ K8 J% q
- t.upload();7 A4 D0 S c$ f* t+ T
- let k = 0;
3 d1 O) f. N! Z - let ti = Date.now();
* A" j. k! ^$ C+ N- ? - let rt = 0;& a* ]! Y4 u4 b2 U& a/ M3 B
- smooth = (k, v) => {// 平滑变化
; w: |; V) ]! W1 b5 p - if (v > k) return k;
( j4 t7 z0 g3 X' Z% W o - if (k < 0) return 0;- c [! p; Z6 a4 b% N$ X& V
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;# K( Q8 D6 r: z1 h' D# m
- }# C) y: ]) f8 `1 r; K- T) M: R5 e
- run = () => {// 新线程+ p; `- H2 y1 T- D
- let id = Thread.currentThread().getId();
: j4 q1 g' R7 g. b+ f3 [ - print("Thread start:" + id);4 j6 Z! e; R/ q
- while (state.running) {: F. S+ C4 n* G- d# _3 S& w
- try {8 n1 C( @3 O% |4 }" E9 M
- k += (Date.now() - ti) / 1000 * 0.2;
1 _$ ^8 ?8 P6 B5 d v - ti = Date.now();
' |* w! U' S: h* D - if (k > 1.5) {
; H e. S; \8 x6 Z* G2 r7 ` - k = 0;
4 Z8 o: l9 ^7 z) x - }9 c5 p2 [( Z5 X: }+ n
- setComp(g, 1);2 @; g4 t, b: f1 p& P6 h
- da(g);
+ t a7 G4 G$ [9 h - let kk = smooth(1, k);//平滑切换透明度( z7 D; B' ^ J% K7 i
- setComp(g, kk);" z& F# [) D9 O6 @5 S
- db(g);' Z0 ?! H9 L2 D! d N' W" z3 B
- t.upload();+ _7 Y, Y3 v( E- \
- ctx.setDebugInfo("rt" ,Date.now() - ti);2 j5 O6 H3 o3 y! s1 P* w# T8 J
- ctx.setDebugInfo("k", k);
7 f% o& ? k1 J* ?$ m) H* e& T - ctx.setDebugInfo("sm", kk);
: ?) S4 f1 d( ^2 J e5 S$ O4 `( O - rt = Date.now() - ti;
- K$ `! |: F' k! T0 D0 b - Thread.sleep(ck(rt - 1000 / fps));. c' o1 }& F2 l1 i2 ^. @, t
- ctx.setDebugInfo("error", 0)
# p' r' z5 ?& K( [0 u* W& i( A - } catch (e) {4 A3 j, Y0 F" f0 `
- ctx.setDebugInfo("error", e);$ d C' v1 [( G) _# B
- }
8 u9 m; c3 {% D - }2 e' b! W8 D- L. D" p7 R! s: L/ S
- print("Thread end:" + id);: _$ b: X% C- f. e
- }" F+ m3 |- z) g* y/ S" h
- let th = new Thread(run, "qiehuan");
! {' f, Y E" M# V$ k) k) [ - th.start();" z/ @1 c. _) Y3 g! G
- }3 n! j1 _8 o. K' F, D5 a% B/ r( D
& \6 T3 b% l4 T9 t- function render(ctx, state, entity) {( W; {8 e" c1 O$ f4 M0 r
- state.f.tick();
7 M7 W! H# l! v/ H$ v" r - }
/ t" a9 B, W1 U+ I- g
: H. b$ r- b/ }! S7 C$ |- function dispose(ctx, state, entity) {
( B& D/ K" B$ b4 ~6 r - print("Dispose");, q4 j- B5 X/ X) z4 }3 p
- state.running = false;. ?/ K, r) D; i3 H8 M1 z) V: k
- state.f.close();
* r1 r% d% T/ q/ o - }
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0 r; _* @3 M2 A7 |2 Y- function setComp(g, value) {
/ M: D# b E, | - g.setComposite(AlphaComposite.SrcOver.derive(value));
1 v7 U Y8 Q: P( q - }
复制代码
7 F: e' a2 ]; b- s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。
# R2 A# d3 F/ ?* {5 V: u2 _" L% S% ^ m
9 i, p4 T& K5 g% s! C* s3 ^( {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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