|
|
还没有账号?赶快去注册吧!
您需要 登录 才可以下载或查看,没有账号?立即注册
×
$ f& W1 n. H: w6 k& D3 r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。
. V }7 z m( Z! k- importPackage (java.lang);
6 k% L: k. w% ^ - importPackage (java.awt);3 K f3 z* S" S6 U- z3 s
- . F! ~ w$ q) ?, l0 Q
- include(Resources.id("mtrsteamloco:library/code/face.js"));+ h1 u& ]: j) a/ q* N
; B% p; d7 s) S+ l7 V- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);* U+ }* n4 }& O: I
4 o3 J4 l' g1 V% h( t! s: E7 q/ S- function getW(str, font) {' X9 {, W. ^& g8 t' O6 T" ?
- let frc = Resources.getFontRenderContext();& L/ z% |. @$ d% C0 @6 b
- bounds = font.getStringBounds(str, frc);
& p# Y+ b( R; k7 k - return Math.ceil(bounds.getWidth());
( J2 `. U& e& j! f - }+ T% G$ E; p9 ?' d5 _
- : V7 O2 N t, T
- da = (g) => {//底图绘制! z: _1 i9 l2 G# u6 q
- g.setColor(Color.BLACK);
8 |2 X; |4 T6 Q - g.fillRect(0, 0, 400, 400);: D" `; l1 F1 Y, [; ], [
- }
. K' u% Y: W. {3 k+ t - l: K w1 W! g7 r
- db = (g) => {//上层绘制8 } L& P6 l0 Z, e6 j0 e$ |
- g.setColor(Color.WHITE);4 O! a1 Q2 a- f
- g.fillRect(0, 0, 400, 400);" H, R( w0 ]+ M- {
- g.setColor(Color.RED);' U& D7 H0 s' o5 u
- g.setFont(font0);
% a. ^5 Q5 a2 `2 ?+ T% J - let str = "晴纱是男娘";
2 R% G' V1 j7 R) ^" N* _7 L - let ww = 400;4 z2 |% D2 U# B: L8 V: a
- let w = getW(str, font0);
% s; K& ~3 M. z# d" P - g.drawString(str, ww / 2 - w / 2, 200);
6 D5 a9 E; z: [4 X - }
+ o- V' r2 w; J7 _1 f6 y
) R! t8 L4 {* u& D& q A. @- const mat = new Matrices();% h, @$ c) ~# A3 W6 }
- mat.translate(0, 0.5, 0);8 c% x0 v/ v; ^8 c9 q( O
0 d- d! U a" ?1 N! f+ M- function create(ctx, state, entity) {
( L5 ~/ s0 I* d$ G2 F b) K - let info = {! X& A, R1 Z7 B
- ctx: ctx,0 G/ v$ }8 Q' w! X
- isTrain: false,5 \) L: b4 K0 V/ \7 q T2 b
- matrices: [mat],; r* E7 D: g3 T, u9 D
- texture: [400, 400],
3 i. L. i0 o- E" b) O - model: {
$ C3 N7 A ]# d% Z. `: T - renderType: "light",1 D. Q; O! I" ~' A' f) t
- size: [1, 1],4 M3 {" r" O7 G
- uvSize: [1, 1]+ t3 Q3 F4 P$ P, B- S
- } S7 l$ m! s V, }0 D$ g
- }5 x$ V9 W" [/ \# c$ M
- let f = new Face(info);
' q$ h, x- `9 D - state.f = f;9 X1 I0 `8 U2 n/ ~* B
- : `9 N* d! b: c- |0 g& _" _) R
- let t = f.texture;7 N. @* Z8 p! p
- let g = t.graphics;
; w- b7 V8 t( P1 ?+ `7 i - state.running = true;7 i% U* G/ `& H8 U- @* O0 D& ? ~
- let fps = 24;
5 Y3 A$ W5 x8 o/ U3 x2 _ - da(g);//绘制底图 x2 A+ s0 K& d1 ~( j" z0 O$ t
- t.upload();
( e2 ^2 t, i P6 P" ` - let k = 0;
/ s, i2 G: [- n- U4 T9 B - let ti = Date.now();
/ H. W8 F2 A$ r, s( D - let rt = 0;% c" i! G+ Q+ L3 f% e
- smooth = (k, v) => {// 平滑变化: y' T8 c$ x* G. L
- if (v > k) return k;" m+ O; i' ~' K6 v( K
- if (k < 0) return 0;) Q/ D% Q* E. H5 @, V
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
4 M/ m- ^$ J. I* _3 O - }
0 @* K: X3 L& O4 z - run = () => {// 新线程
, ?+ a m9 ^* D1 ]* p - let id = Thread.currentThread().getId();* e) I+ f0 R0 _; j
- print("Thread start:" + id);
0 H1 B+ J, f( |5 j. j - while (state.running) {- V, W' p% L( j! f* V5 R& i: b
- try {
# N: h) ]/ B: @! u8 b" _ - k += (Date.now() - ti) / 1000 * 0.2;9 i# S* ]( U1 t1 {! l' A m
- ti = Date.now();) J- Z2 y5 S/ Z* u7 z* S G
- if (k > 1.5) {
/ O7 t4 U3 y9 Y7 l - k = 0;
! p! n4 S4 f- S& o$ E4 q2 |/ R - }
/ @& w' i. ^" _ - setComp(g, 1);7 D8 [& n' d9 l) ^5 \: z
- da(g);: t) P/ P2 Y; N
- let kk = smooth(1, k);//平滑切换透明度! {" i" ^! C! Y4 ]
- setComp(g, kk);6 M( h# r* u* P, \3 `* g, `( `. G
- db(g);/ x( v" V8 j/ d4 R) x
- t.upload();* G2 C- [! j& J( k* \' Y
- ctx.setDebugInfo("rt" ,Date.now() - ti);) q" Z, j U$ x1 s4 K2 ^% O y4 q
- ctx.setDebugInfo("k", k);
: ~$ ^$ n ^6 D - ctx.setDebugInfo("sm", kk);
( x9 t' B) O, ]/ {6 o) u Z; K9 S( V; e - rt = Date.now() - ti;! z7 U: d; d. `
- Thread.sleep(ck(rt - 1000 / fps));
# Y, F. X) l4 y+ g - ctx.setDebugInfo("error", 0)
+ a. w! v$ Y5 X0 s - } catch (e) {# m: X. x* A" ^6 G/ H. v
- ctx.setDebugInfo("error", e);
, E- d) B* L+ |/ Q( C! C - }3 ?; b* ]4 a9 f" d
- }
% ]! Z: E3 H4 ~0 `4 b. q, L - print("Thread end:" + id);
9 l- w W" J" H4 L0 J( A! H. o - }
* G/ l4 z/ P3 w4 s; E- z' s - let th = new Thread(run, "qiehuan");
u6 J1 x5 }# M- j! i - th.start();
8 ?5 t& a4 T# `0 ^7 M5 s - }$ _& a' E+ |3 L/ r1 | f! k
% g4 p% k: N) K7 _2 U- function render(ctx, state, entity) {
- b% i+ P7 l3 v7 q* U! J" ~+ f5 n - state.f.tick();
" q6 j$ T0 j( w7 r( h" x7 c0 ] - }
; t& e) ^: y. p# ~4 \! E - 7 i6 E/ @3 `0 r6 j# J3 A3 T
- function dispose(ctx, state, entity) {/ d+ @" [4 R5 a0 M0 S% i
- print("Dispose");) u5 w1 T$ F$ z5 |
- state.running = false;
% H9 f. `" t O8 O3 O# c7 R5 Y3 R( T7 [ - state.f.close();
# t* C% j* K+ t2 u% G- M - }
# U% X' q: p) q% S - % I9 s$ g9 S, Z. P
- function setComp(g, value) { x+ v% |) Q$ j: Q
- g.setComposite(AlphaComposite.SrcOver.derive(value));
3 K3 b& M3 G. l! W2 B$ C2 r - }
复制代码
y/ A: V& \. h+ 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。3 Q/ X! T4 Z# o0 b+ M f
c) b) c& H% }
! N: [ F+ h: |! F' p: t
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下): H4 x5 ~& y6 A6 l' l% j
|
|