|
|
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
×
4 _# D7 d% _ n: |9 n0 d" 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。
- i& v, {" V9 O- \4 @, d- importPackage (java.lang);
" T1 I( p* A$ ^, m - importPackage (java.awt);
8 I$ B9 Y& ?2 r5 H- F
[: j7 _. }" n- include(Resources.id("mtrsteamloco:library/code/face.js"));4 i9 C* y4 N! T1 [: K* m: ?$ n6 o
- / j+ F. j1 u( W
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
+ s/ [' J, s5 L - 2 d8 h2 h5 | i+ |- D: x
- function getW(str, font) {
& z# R( a& R" G* Y( Z6 L; Q - let frc = Resources.getFontRenderContext();5 c9 Z8 |- j4 I/ E' D& D0 j
- bounds = font.getStringBounds(str, frc);: l7 P. _% \5 n4 j f. o D
- return Math.ceil(bounds.getWidth());
* r/ u7 i# L! X$ r4 a9 v+ P - }. G* {' U9 z. {/ `/ p
! m/ C+ W0 m0 a% g2 M% y- p r- da = (g) => {//底图绘制
, S* M# |1 g2 T5 Q% h F - g.setColor(Color.BLACK);
2 }# S3 I6 V3 s. L2 [0 Y/ F5 l - g.fillRect(0, 0, 400, 400);) ~4 b5 g; X6 [; m4 j# H
- }
9 K ]' i4 a6 l: J# ?
+ u0 I+ V. W y. ?& Z- db = (g) => {//上层绘制
. H0 C! G- d" C7 A3 L" ~ - g.setColor(Color.WHITE);
$ G( I4 J0 t ]( o6 P( d - g.fillRect(0, 0, 400, 400);2 q( j* @! j/ h+ G
- g.setColor(Color.RED);/ @) Q% A1 N* n
- g.setFont(font0);: _4 W- g2 H) j6 |
- let str = "晴纱是男娘";
5 ^+ ?% b- ]3 r! E/ y! K. X - let ww = 400;
; p# A4 f% f5 t4 i0 p, S: R( W3 R - let w = getW(str, font0);
& A2 N1 ^" r! x. b! M$ V - g.drawString(str, ww / 2 - w / 2, 200);
# L: o7 [# h2 R/ C# \ - }1 n2 g. C4 Q- y/ B
- : K2 d' m, j; S3 ~+ K8 k
- const mat = new Matrices();% U' o! V- |( ?; i4 S/ ^5 E
- mat.translate(0, 0.5, 0);
7 E) s4 V2 [ [! o3 L, J3 t - " i5 Q2 f9 K$ u6 @
- function create(ctx, state, entity) {
8 F; y$ R8 D, b/ J# F" K y0 ?9 [# z - let info = {
: @4 V9 s; n& d' v, l - ctx: ctx,
* u9 u- P+ @* e7 W* O- i0 [5 ~ - isTrain: false,
/ c4 m; H. a5 P4 R6 y9 D4 y9 |; N& v - matrices: [mat],% p6 g" O K6 C" s W" Y
- texture: [400, 400],
3 w, K' g. s* _ - model: {
# w; r: p' @1 X' @% V j d - renderType: "light",
) W* ]* ]. J: H/ L' b7 ^0 W - size: [1, 1],
% ^+ U$ ?7 d9 [( c: I( w+ a& N4 T- X - uvSize: [1, 1], I ~, x' Q& ?- S( U' E
- }
3 M; H3 e8 K- E+ x - }- H5 r* h' `& E6 I
- let f = new Face(info);+ Y' |0 M2 C* e
- state.f = f;
5 _% a2 E! a9 T; @6 S7 }. \ - ) C$ u8 q8 f! U, T
- let t = f.texture;' l i' g/ e, W3 h
- let g = t.graphics;
7 R8 p, r6 p0 R - state.running = true;/ q- n+ V$ E# A
- let fps = 24;
' D) I( W6 N( c - da(g);//绘制底图
1 e/ S! h- [1 W2 n, I/ ? - t.upload();
. v, ?! r1 |4 ] - let k = 0;" P0 p$ H& b! d1 X' S; t0 c
- let ti = Date.now();
' j7 d: ~( R7 M& ?3 K; p. N Q4 ~ - let rt = 0;
( s% H6 G' l/ p - smooth = (k, v) => {// 平滑变化
" Q4 l% ?" W3 B( Z - if (v > k) return k;* M" f' J7 c) y
- if (k < 0) return 0;
1 |$ d2 _4 q, ?8 M: j - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
, }$ p! c8 l2 G' h I2 z - }
# W* ^0 }2 e4 l* J# M - run = () => {// 新线程
$ K/ t0 R; X/ R6 q7 Z; t3 }8 S - let id = Thread.currentThread().getId();
+ l/ C6 H9 J7 ^. C" s, w5 F - print("Thread start:" + id);
4 J& N- [1 s! v0 L- V2 }8 ?8 r" a& R - while (state.running) {: k, H6 t* j) {" j
- try {0 Z# e/ u1 b( U! D2 z
- k += (Date.now() - ti) / 1000 * 0.2;8 w& r# K8 v; r" F
- ti = Date.now();
}4 d0 q) g" @ @, y - if (k > 1.5) {
1 D* z# c4 N8 J' Y - k = 0;$ E) v9 U) G( p* Z6 g
- }+ N1 F- O# T( }' ?
- setComp(g, 1); l2 E; H( F8 l2 } b
- da(g);. c ^ Q! }% k; |" v' ~
- let kk = smooth(1, k);//平滑切换透明度" H9 P, ~/ |% k: h3 a5 l7 q
- setComp(g, kk);5 J y( N4 _5 H
- db(g);0 o7 i+ u5 H% m9 G
- t.upload();! Z& W8 Z. F. e6 e% k
- ctx.setDebugInfo("rt" ,Date.now() - ti);
$ u6 b# D* D. \- ]; ?1 r5 l - ctx.setDebugInfo("k", k);: {% q+ [4 V( y+ e
- ctx.setDebugInfo("sm", kk);% `6 Q, Q. b& f1 K6 }
- rt = Date.now() - ti;* F: L$ D) x _ X: G
- Thread.sleep(ck(rt - 1000 / fps));
1 `3 l" F0 ?( s3 Q$ y/ s2 A - ctx.setDebugInfo("error", 0)
6 q, V7 t4 [) h8 K! M s - } catch (e) {- S) k9 R% t& @. w$ z# H
- ctx.setDebugInfo("error", e);1 U6 @3 b$ w s$ {0 `0 q
- }4 Z+ n+ h3 |7 g8 v" K
- }) H A6 K( [$ }! {$ J# o
- print("Thread end:" + id);
8 a& }1 r( h1 F. |: j' @ - }. N! j+ K9 v' G7 `# O
- let th = new Thread(run, "qiehuan");
; k! q' _8 |" y8 | - th.start();. B' x& p! {7 H1 k" H
- }
9 H8 ?2 M! m& y3 x C' f" W - # A9 M& h* \. Q+ w* D- i$ [% _
- function render(ctx, state, entity) {% b. L K+ y; T5 l8 y
- state.f.tick();
! J1 C. E' u0 r - }; `5 C8 i. L8 M4 h$ d3 G- p/ }
- % K% d2 a9 Y" H" ~! M2 a/ g
- function dispose(ctx, state, entity) {. c u {( ]' ~5 F# w* i* `0 @
- print("Dispose");
- E# q, L/ Q- T - state.running = false;
9 p: D' P" c* f+ S& s# U0 m - state.f.close();9 D: l5 l, Q; Q8 a
- }4 Q, M5 Y8 j& W+ m2 A' d! f, l/ _5 ^
0 E$ I$ S# ]4 c# _! ~- function setComp(g, value) {
! l/ U8 E& C+ e4 U3 E& s; s K - g.setComposite(AlphaComposite.SrcOver.derive(value));( k' s3 [2 N3 S( B
- }
复制代码
/ z: Z5 e, Y9 S; E% V6 J- C( A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。- i# R0 Q) C! i
% I6 P8 @" f1 }, s5 v/ L: r, ~1 H3 n/ B+ g
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)! w5 m, X: U) d7 {" u
|
|