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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。
S+ q" }) U* s0 C& r2 ^- importPackage (java.lang);# W$ t- o# P6 z4 R% q
- importPackage (java.awt);/ T0 v0 U# B9 X( H
- # g* j3 o/ s: y& ?6 {( x3 @2 b
- include(Resources.id("mtrsteamloco:library/code/face.js"));: m; y$ s' B7 S# P a5 P
4 S9 Q2 g: s8 y' D( s/ W- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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/ Q; @1 h' ^! p9 S% ?5 E- function getW(str, font) {
! R2 V$ T& z# ^2 P$ c- ^ - let frc = Resources.getFontRenderContext();7 u7 i: R2 n( O8 k# x$ p' }0 E
- bounds = font.getStringBounds(str, frc);, s( @" `7 P' C0 M1 Q, s
- return Math.ceil(bounds.getWidth());
* @: K" Y- k2 b' M/ k8 c, i5 S4 g - }6 r, \, ?; p8 ]! ~* m& _2 }4 w' ~
- " @7 ]* D2 J) Q H( z* y( P; i0 z
- da = (g) => {//底图绘制
9 _( Z5 z* |4 a2 t5 M0 G o- B! t - g.setColor(Color.BLACK);, O- ^! V& b7 o. E
- g.fillRect(0, 0, 400, 400);
; \: e w4 F S _* Y5 { ` - }
( U9 y- {3 \6 m1 ^! i' O: ?$ q - M. h* n ]: a' g1 A) s$ V
- db = (g) => {//上层绘制! u7 P: T* |6 I: U
- g.setColor(Color.WHITE);
/ x0 `2 e8 B! A8 ` - g.fillRect(0, 0, 400, 400);# z! q; r3 k7 v$ H9 o) Y1 o. V" g0 o3 t
- g.setColor(Color.RED);2 R' `" t6 S2 j0 {. h3 K
- g.setFont(font0);
0 Q; U/ V8 H: c$ }! B - let str = "晴纱是男娘";2 D' c7 b8 G! z! n9 a
- let ww = 400;
/ M/ ]1 B! i4 Y8 w - let w = getW(str, font0);7 @, N1 G3 D5 Z& m! i9 j
- g.drawString(str, ww / 2 - w / 2, 200);0 `6 p1 y0 |/ O+ G
- }
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* V3 j2 x) q0 c% @( ?- const mat = new Matrices(); g9 R8 q% X5 z9 M* J2 P4 J
- mat.translate(0, 0.5, 0);
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/ k$ i& c. T) |# B- function create(ctx, state, entity) {" k" i0 Y3 P: g( z% D
- let info = {, }& r( M7 u& m: `0 M
- ctx: ctx,3 W' h. |6 J' Q& f! F/ Z6 `
- isTrain: false,) {9 U* U9 c ], ~7 s7 Q
- matrices: [mat],* |. A0 K# E8 E7 N. f$ q0 t
- texture: [400, 400],
+ _; K. f- a/ B n9 m* v+ e, P - model: {
# J: D8 A0 I- c - renderType: "light",! V" e- U: B$ p, ~; E7 e( g' V0 M% ?
- size: [1, 1], B4 W% U; i f' V1 {6 I1 {0 U, q% x; t
- uvSize: [1, 1]
! j' W$ T& \& J: n* w% o - }
+ |( j+ b; _9 C2 V, u; s4 l$ h+ K - }
^' ]) Q, V1 }* A& t6 W - let f = new Face(info);
: C5 c' M0 d# ?9 q E- B - state.f = f;
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- let t = f.texture;2 h. l0 H9 n- ~$ {) ]! B
- let g = t.graphics;1 v- R8 p9 B3 F, x1 F
- state.running = true;
; H3 o* Z/ z+ W7 t - let fps = 24;2 d# s/ i) R# y9 S; V7 f, y
- da(g);//绘制底图
/ ^8 z) d! Z8 F7 Q1 B" Y5 P2 D/ P2 h - t.upload();' G, J9 V/ ~" B% j' i, _
- let k = 0;; N& ]% G* K* @' t* H+ l. j3 y- Z
- let ti = Date.now();9 o( k3 |0 I: t; N) e/ p- J9 ^, r
- let rt = 0;. i8 T# D1 g! U
- smooth = (k, v) => {// 平滑变化
7 z5 s) v4 ~% } C/ a- } - if (v > k) return k;
% ?) |$ ?# m" X, b3 D1 f - if (k < 0) return 0;4 p. D6 _: Z$ v/ i* P
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;. t0 O5 s& Z/ x8 a
- }
3 z$ A j% h3 U0 Z - run = () => {// 新线程
: h6 j# ]# E/ \6 Y- d3 Z: t - let id = Thread.currentThread().getId();; v3 U ~/ D" [5 o$ _! {3 \* ?
- print("Thread start:" + id);
( ] X: J( R, { O- n+ V( p - while (state.running) {
2 T, m$ S- G5 }; j' F9 p3 d4 L - try {8 F } e/ J& L$ b: Y# v
- k += (Date.now() - ti) / 1000 * 0.2;
9 E/ I( ?. Q( Z; u- R" B - ti = Date.now();$ z$ v' q1 c9 @* G9 ?
- if (k > 1.5) {
, I' j) ~# U2 s8 U( u% h' Q! W ] - k = 0;0 O9 U5 u0 k: G( y% j7 J2 B `
- }2 c' G3 a2 t, b: l
- setComp(g, 1);4 I. N8 e+ M8 Q9 ^+ J T D7 P4 `
- da(g);
* K; u( t% L3 I* h' G) E1 \ - let kk = smooth(1, k);//平滑切换透明度& N; z# ]% g8 ?, O' h& g
- setComp(g, kk);
8 l" ?$ d4 ]. E2 ? - db(g);
2 W( ]( a2 X0 D4 n7 A% ~ - t.upload();
) t1 y1 m6 H* `# }7 k! \0 ^ - ctx.setDebugInfo("rt" ,Date.now() - ti);
$ ^1 k7 H6 ?3 I) j) t4 l: v - ctx.setDebugInfo("k", k);
2 c; H6 Z' V( o2 e4 x6 Y - ctx.setDebugInfo("sm", kk);! o0 u4 N1 \' @" T! t
- rt = Date.now() - ti;
8 m* z% ^! |$ s; S" ` - Thread.sleep(ck(rt - 1000 / fps));
, `3 _" q- f# l/ J4 O9 i - ctx.setDebugInfo("error", 0)' X c& d+ S/ c" n0 A! j' L
- } catch (e) {
1 B. x) n: s) ^3 B. h- g - ctx.setDebugInfo("error", e);
$ I* g6 A- g8 U- N$ L7 `- e - }
8 q( l' r' [0 ?- V: C! d3 D - }1 Y' M f0 m+ b* X
- print("Thread end:" + id);
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- let th = new Thread(run, "qiehuan");# G2 n+ _1 O1 }- f! v$ F
- th.start();
4 u+ i- l% \, z1 v" A4 J - }
: o7 }/ ^' N7 l! L
: K& q" a, ?4 L& l5 K- function render(ctx, state, entity) {
9 N0 {; L5 `$ C& j( ^/ ` - state.f.tick();$ o- |* M3 p9 J% N; T
- }, F/ B! x* {" _& E
/ L2 n' J$ n6 a! }0 K6 E- function dispose(ctx, state, entity) {
- {: T( F) d3 D( @ - print("Dispose");
- X9 d$ H% b) e/ v4 y9 ? X0 i: v - state.running = false; y e; u9 C! i! u
- state.f.close();
1 l# ^. z- ~2 `! T - }
* ~! d5 F9 u. a. \" `
6 w; w; M/ }, u4 J& N2 B8 n- function setComp(g, value) {
6 m: L5 L1 n0 `( G! U$ @ - g.setComposite(AlphaComposite.SrcOver.derive(value));8 u. v, i: A* R, e1 s
- }
复制代码 1 q8 n- H3 ~+ l( e
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。- w S! m: E* U6 r* ?! e1 A; D
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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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