|
|
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
×
k) a* R7 ~8 s0 n
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。
. R" w9 e4 G A2 w X- importPackage (java.lang);5 k$ s3 O D3 h. D D
- importPackage (java.awt);9 d' I3 G' E4 n$ m+ ^2 ?" y
* N0 A4 c0 i# }0 ?- include(Resources.id("mtrsteamloco:library/code/face.js"));& a# }0 E6 ~3 j1 {+ l# O1 X5 R$ u
& T, j r- O: m2 I. p- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
, V C' g& f) ?- n- y* C1 R9 L( i - ( y* c; ?) o: h$ I
- function getW(str, font) {
6 V+ J8 ` x: m5 i: E. `; r2 S - let frc = Resources.getFontRenderContext();/ d/ M" l. ~8 z( a2 H3 b7 ]+ w2 ^
- bounds = font.getStringBounds(str, frc);
' @4 v! _: P# ~: y - return Math.ceil(bounds.getWidth());
( d; U; Y+ o# o - }( @& y2 S$ m* X7 |- x3 \
, K- [( v, j9 M- da = (g) => {//底图绘制
1 l& X. J5 n# p9 s8 H/ Q - g.setColor(Color.BLACK);8 f4 L# c3 o- `1 h G. v: v
- g.fillRect(0, 0, 400, 400);9 Y. {' t- ]2 ? l
- }+ f- V8 ~, N4 S' v h9 ?
- 2 g5 w9 I8 f G' b9 F
- db = (g) => {//上层绘制+ \- O8 X! e! d# l6 j! _* ^- R% I
- g.setColor(Color.WHITE);
* C/ y+ L5 y$ o9 N$ W. C8 K; Y - g.fillRect(0, 0, 400, 400);& G* q# T% O6 Q: q) Q, Q
- g.setColor(Color.RED);8 H- z s6 F* [
- g.setFont(font0);
4 U, R" c# j7 ?6 {/ j9 _) o& n - let str = "晴纱是男娘";
! q2 P0 A' z- z# j - let ww = 400;8 d% e. x- d" _( G
- let w = getW(str, font0);
3 L, J7 t% h+ [+ A- O5 q$ R - g.drawString(str, ww / 2 - w / 2, 200);7 G9 p7 L$ {+ Q/ D6 A0 u! |
- }. g3 x* C+ k( g8 c
- - k& X: T+ L: I4 o, |' P3 R
- const mat = new Matrices();7 n7 V, }8 K2 }- @9 ?9 A% F# o( q
- mat.translate(0, 0.5, 0);+ [$ O1 ^! i$ _- v b% ?8 l9 w# W+ q
- + l$ w/ q, q) S
- function create(ctx, state, entity) {: E: d# L' ~9 c" \
- let info = {
0 {, z! X' r2 v1 P - ctx: ctx,
$ v: [% E+ D' H2 T! m - isTrain: false,/ H( H: m- N/ c* v
- matrices: [mat],
* b7 H* x1 {7 ?- N: F% ^ ? P - texture: [400, 400],
r! h- h& [% Z, R' O+ T5 u1 K - model: {8 C/ }+ H* d! Q+ a8 C0 }1 p! A$ r6 f
- renderType: "light"," d, N O: t d5 R. J7 O
- size: [1, 1],$ T3 I/ y8 @% z, }3 A/ G
- uvSize: [1, 1]& L. P( D* s6 q- {
- }
4 w5 @+ ]% s0 [4 A& i5 d$ |# N - }
* B2 g; ]; g9 n& p( {8 Z$ G: \ - let f = new Face(info);' {3 S7 @3 e+ Q! }' j
- state.f = f;( `* n& e1 ?+ h" @4 q
- ! o2 d: {9 u9 O/ Z% J
- let t = f.texture;$ f, a4 L& y+ ~0 k% T. {7 h
- let g = t.graphics;
8 h# C1 c9 s0 p) e/ F - state.running = true;" n5 q- B) k( O/ c- L' j
- let fps = 24;
# }3 ]* Y3 C% y0 j4 n - da(g);//绘制底图
; c3 g8 b, r$ |3 R% S - t.upload();
+ v2 \$ b4 H: U/ ]% i% v - let k = 0;
8 b8 @5 a, f7 E7 ?0 N2 y4 t( I1 N - let ti = Date.now();7 S+ S3 m1 J+ Y6 N
- let rt = 0;
) ]+ {* V* k! Y- P - smooth = (k, v) => {// 平滑变化8 L6 N; q8 y- T
- if (v > k) return k;1 ~, z# G# }; X% I/ p- l5 r0 t
- if (k < 0) return 0; t/ s5 N1 g. r* @$ X& f$ O
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;; V. [" |, P$ M, \7 P* \* j
- }
8 h: p1 B: r- o7 c - run = () => {// 新线程* P1 ^. y) \) d# c# ^. U
- let id = Thread.currentThread().getId();, I( S" P; x+ w7 I) t, I
- print("Thread start:" + id);
; e1 b" X: Z& Y - while (state.running) {! W* l# K$ D) W5 {% T x
- try {
# K( s- |5 v5 m - k += (Date.now() - ti) / 1000 * 0.2;9 _8 L3 t1 E) f8 z. u
- ti = Date.now();
7 b6 ^9 L7 E I0 F9 i: F" ? - if (k > 1.5) {- q% S* w6 `* U* z- o) @! l; R' z
- k = 0;
, Z/ k P% K4 s7 Q - }
# M( v0 T/ _7 Z2 N: M - setComp(g, 1);
' a' y& T7 v# }* F; w - da(g);: |! x! Z/ \% S& ]
- let kk = smooth(1, k);//平滑切换透明度 @" c d e4 E
- setComp(g, kk);
" z8 L7 g, Q2 v5 {( v8 t4 { - db(g);
# H. q7 k, p" }+ ? - t.upload();
. j( ^$ H) F, j9 j( F9 F2 x - ctx.setDebugInfo("rt" ,Date.now() - ti);1 N: {% q; t/ ^3 ?( ?' `2 N
- ctx.setDebugInfo("k", k);
5 ~! Z& I; Y& z/ z l% P4 u - ctx.setDebugInfo("sm", kk);
( g$ D# }% {$ C0 G - rt = Date.now() - ti;
2 @3 g: r# \3 m6 n, ~4 E - Thread.sleep(ck(rt - 1000 / fps));
) z/ D" a* }, W; t5 P/ l* h( A - ctx.setDebugInfo("error", 0)3 |8 \( B' o- r) A; U# o: n
- } catch (e) {3 a& t2 F; K) `
- ctx.setDebugInfo("error", e); W6 q& a$ A1 `
- }
' J0 A( o0 E2 R - }
6 L: v1 X( t* r5 F# Y - print("Thread end:" + id);
! A$ e4 I. G( K - }& d! m9 C) T b0 l4 e
- let th = new Thread(run, "qiehuan");
9 @6 h( X) E$ x. f4 ~( v - th.start();% ]; g/ B; D5 M, k5 H
- }% e m- K, J* U, l
3 P, Y Q& G9 `# Z. D4 J2 A- u3 _- function render(ctx, state, entity) {$ \! R. ~* Q5 ~6 o1 h
- state.f.tick();4 m' ^% h1 q& n
- }
5 R% H1 }/ r; t( a7 g
/ ^) n! g, z8 b$ p C" j7 n- function dispose(ctx, state, entity) {
/ {" L2 {- V1 }7 s1 j, i2 ?- x - print("Dispose");
2 {. q' @' A# p8 w% T3 S - state.running = false;
7 ^/ f5 l% C- ?+ d - state.f.close();
1 N$ X) F8 x: a* j - }1 \! s# \3 F5 b2 J' I6 D! Q$ V
9 ]0 ]4 N7 W5 ^; U( ~/ Q8 g- function setComp(g, value) {
6 q2 h' u! q" @- w! d( J - g.setComposite(AlphaComposite.SrcOver.derive(value));4 e/ ~ s! L9 T% r& O
- }
复制代码
& B9 [, ~5 [" X/ h) R2 O# M6 `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 i& ?7 T# }7 G6 l8 t$ w5 n& C9 T$ U: P) @: J# ]# h; |! g
9 m. o& |1 J T/ w" `2 V ]3 A顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下); y& k6 J3 x1 ^1 R4 G
|
|