|
|
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
×
5 T/ y2 h/ Q% G5 N2 h4 N& h
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。
' ~$ B: l8 R* A5 U- importPackage (java.lang);
/ H0 \% N- W, s' U7 n6 t7 v - importPackage (java.awt);
$ Y4 Q5 e! X, A- c5 i; @, x C - * `/ H. Y' Y8 }* I6 C2 }
- include(Resources.id("mtrsteamloco:library/code/face.js"));: K$ ^( X- V x4 M, f/ O0 I$ ^
R( l" n+ M6 V- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);( K! V! w& U! T0 {) E s9 K+ Q
8 F3 b T, S/ r/ Z! `2 ~& ~- function getW(str, font) {8 Z1 r$ J# d' c& `7 o
- let frc = Resources.getFontRenderContext();
& c, k( y3 q- W - bounds = font.getStringBounds(str, frc);& B# d; o9 O0 N/ [8 Y. `) {
- return Math.ceil(bounds.getWidth());6 Y( m3 W9 L" S; t- |
- }
v( z6 f f6 O' y' D
) P" N; T: i& v: g0 o- da = (g) => {//底图绘制) V7 D. S f+ [) ]* m) o; x8 V& r
- g.setColor(Color.BLACK);9 Z8 g8 S( O, G- s( h2 _
- g.fillRect(0, 0, 400, 400);$ J! z6 ]1 c l `
- }2 f1 z& G" g; X6 O& I& I* i; o6 \
2 ]1 B$ C8 @1 @+ Q2 T- x! l- db = (g) => {//上层绘制9 ], \5 ^" R# M. A" v# t
- g.setColor(Color.WHITE);
& `; w* o2 w! x8 `0 B - g.fillRect(0, 0, 400, 400);
* p1 c! f) _- F' r4 W& H* F+ j - g.setColor(Color.RED);* v& X( o& _. o( S6 ?
- g.setFont(font0);! s# g+ S- Y$ G9 k7 L* l- z
- let str = "晴纱是男娘";& {/ h) s5 O; l3 j; T' s: h
- let ww = 400;4 E3 C7 m6 u6 v$ w8 ?1 S
- let w = getW(str, font0);! ^0 R3 \9 r" d% h6 r- [% d
- g.drawString(str, ww / 2 - w / 2, 200);, [& u* k" A" o* G; F; s. X
- } w, \( q( J3 j
- # F$ m" ^$ B$ k# U+ c) Z
- const mat = new Matrices();9 C! U6 R, o" y* a; s, c. q
- mat.translate(0, 0.5, 0);$ e* ~% `3 r. x/ ?: i
) c2 h( G: a. Q7 o- function create(ctx, state, entity) {
; m; f2 o$ m% P+ W - let info = {; q, f% g+ |& \8 `8 x2 o
- ctx: ctx,
0 Z6 ~7 G2 B& R9 Y: `7 } - isTrain: false,. d- B" N) S; M$ a6 v' b1 b
- matrices: [mat],# U% D" I3 _9 H" J! f9 ]
- texture: [400, 400],1 A) k, d; {" `4 j
- model: {
2 x y1 h. `2 k - renderType: "light",- C& T$ N: p9 o+ e& n2 r
- size: [1, 1],1 k8 y" {2 N, d% N! j$ P
- uvSize: [1, 1]7 ~4 x, r, x1 _
- }
2 o- R8 K$ j3 g( y! }) i - }
# \" }& Q/ ?: F4 g - let f = new Face(info);
) O; R0 F7 M" j. m2 b - state.f = f;
& f, L" U7 w3 e1 u4 O - 8 ^0 b# K- [6 R: M( r
- let t = f.texture;) {0 v. C7 u# u1 C2 a3 ?& N
- let g = t.graphics;
9 n+ n( o+ l$ b. C# S7 a8 q% \ - state.running = true;
! g$ x! p; p, f; q& ?% [ - let fps = 24;: S8 a2 A) P! t# B4 x! ]3 p0 L' g
- da(g);//绘制底图
3 }2 F$ q8 b: V: q- q* Y - t.upload();) l5 h7 ?0 A2 h# o
- let k = 0;
0 `$ j4 ^- a4 G) W/ F$ U - let ti = Date.now();
2 B( O7 {" ?0 i. w - let rt = 0;- v$ R& \6 q: Q5 ^' r# r" U' M
- smooth = (k, v) => {// 平滑变化8 E, [5 [6 M4 X; s" K
- if (v > k) return k;$ H2 }; G7 m7 Z. m1 S/ j
- if (k < 0) return 0;5 A. c c/ ~1 e
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;) x& I4 U% k6 n: h1 M
- }. Y+ l2 G0 C0 U' e; M+ }, Y
- run = () => {// 新线程7 p3 B4 a/ k8 j% O+ B7 t$ z4 ^
- let id = Thread.currentThread().getId();
; f8 H0 b4 l2 o; H; b+ I3 B/ Z9 `1 w - print("Thread start:" + id);8 z& I) e3 n( ]& k$ A; T& H
- while (state.running) {: \$ m. J/ ?( d- Y9 ]/ B" K; w
- try {6 R/ ?9 n1 i8 {7 T6 c8 X
- k += (Date.now() - ti) / 1000 * 0.2;) D. Z, i4 @, d. C
- ti = Date.now();
1 [2 M6 V# w6 v A5 J t1 \% l$ ~ - if (k > 1.5) {
+ i$ d; a1 y& ?8 V: B, E* ? - k = 0;
1 P" E$ O# D6 r9 ^; d - }
. K1 X" _1 W( l( W3 P" E/ e: ~ - setComp(g, 1);, g! m6 |3 e% o' l0 h2 u' X
- da(g);$ x% g9 w5 G0 ?
- let kk = smooth(1, k);//平滑切换透明度" N7 m( O+ h* @/ w e. r
- setComp(g, kk);
, l1 O( N* W7 m - db(g);4 _$ X* U! w7 x0 w$ O
- t.upload();. p r2 a* d" B+ p
- ctx.setDebugInfo("rt" ,Date.now() - ti);
+ d, C# a7 l6 f: Y3 p; Q - ctx.setDebugInfo("k", k);
9 U& ?9 c# f/ P5 L" f - ctx.setDebugInfo("sm", kk);2 f3 j3 P6 [5 r3 X& ~, s
- rt = Date.now() - ti;6 h: p1 @; K/ Z; k
- Thread.sleep(ck(rt - 1000 / fps));, _- k; I/ _# ^* S: K$ J
- ctx.setDebugInfo("error", 0)
4 a; H I. T5 S - } catch (e) {
0 D& v; v5 i o, a - ctx.setDebugInfo("error", e);7 i+ v" ~3 l' u$ G# L. Y
- }: r5 ~* w1 N' M! ]
- }
7 F# s+ \7 d' F7 ~+ x2 D! b - print("Thread end:" + id);
5 y) W( h% [7 c" F - }
$ w% q% Y u3 R, ^; o' P# \2 @1 J+ j7 m! M% A - let th = new Thread(run, "qiehuan");" ^" o3 F( K0 R/ o, `( ?
- th.start();
2 f' W! t& m( R) } - }
& d) M a+ V# x. v - / m. s4 V& _4 D$ I+ T
- function render(ctx, state, entity) {
@0 i: V7 v8 t* z9 z - state.f.tick();' c) O; a( t$ Z$ c/ C+ W) s/ I
- }
V& ^ A5 d& y3 r+ U
5 X6 I2 u8 o; s P; K- }- function dispose(ctx, state, entity) {8 Y6 O; i8 n$ I( X; |3 I
- print("Dispose");
$ M8 x$ J1 {! A - state.running = false;" W' |: j/ L# }4 l$ I
- state.f.close();" @+ ^9 M: H/ T& j& e0 l M. D
- }
& ] a. W0 H) o8 H+ ~0 }
6 T6 l9 K# M/ i( E# p$ ^- function setComp(g, value) {
4 B# M/ I+ E Z9 ~, ~! k - g.setComposite(AlphaComposite.SrcOver.derive(value));
" f5 z5 V& f% O - }
复制代码
2 T# j1 V. @/ M8 d+ ^! _7 M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。
5 d: K. J; A0 X" s0 u8 Z( q
\9 @: r% O6 o0 ~/ ]4 Z \4 b9 G, J6 y3 Y- x1 V, r
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
2 k; C$ h1 ^, @/ r1 ]7 d |
|