|
|
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
×
3 }( C- k5 i; [) D3 q
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。/ J. S; C. ]4 a7 s, m0 W D( B% c
- importPackage (java.lang);
/ e( k; s# O" y7 H1 n7 d, N5 L0 `5 T( k - importPackage (java.awt); f% o0 j! Z' l% z6 y& ^
- ! ~" N, _, x2 w/ B6 r
- include(Resources.id("mtrsteamloco:library/code/face.js"));
) p/ q9 ~, O, B4 J( }
9 r* E" s' p( c) P8 ^- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);- t: M' x; a1 P1 l3 c% M
# q( R( q" L K- function getW(str, font) {; ]* P" m/ n9 P% z8 F+ J& m
- let frc = Resources.getFontRenderContext(); g% p7 D5 w: @: P4 D
- bounds = font.getStringBounds(str, frc);
" ^7 V% h. P0 D - return Math.ceil(bounds.getWidth());" A9 K/ M8 M; z5 K, \
- }
: j2 m3 j: [& N1 x - * N$ L+ p% u* I1 K& X J
- da = (g) => {//底图绘制( f& O: K+ U+ b8 ^3 s0 e5 O
- g.setColor(Color.BLACK);; ?1 `" K6 d+ {- d& e' v* }
- g.fillRect(0, 0, 400, 400);
\! h, l# K- Z5 H - }0 h( f F+ K. [; N+ ^8 Z* H
% @$ H7 @4 F) v' Y- db = (g) => {//上层绘制
5 t8 L4 p0 f9 a: O- |$ U - g.setColor(Color.WHITE);- T1 L3 |7 i4 q
- g.fillRect(0, 0, 400, 400);
* {& M; _ w: ?% i% c# l4 a: @ - g.setColor(Color.RED); X+ ^& w& M' c5 i' D2 ?
- g.setFont(font0);
) a( z, V3 h5 {9 k8 k' R - let str = "晴纱是男娘";7 n8 n. h3 S5 n, D" c V
- let ww = 400;9 C" T d5 s9 S+ i
- let w = getW(str, font0);
+ s& T; N; Y, k- B - g.drawString(str, ww / 2 - w / 2, 200);9 p+ ^+ P5 @/ c# y+ D6 x. F# u
- }
( o6 U1 u; R- \ - , }( {3 W* E: b5 c) r
- const mat = new Matrices();
. c& | o: ~/ u3 V# _! K - mat.translate(0, 0.5, 0);
5 V5 J0 n" c i. R+ a; D) y' x k
$ H3 v% }! V% } ?7 V r) X- function create(ctx, state, entity) {$ D( e/ S+ A& h8 L) ^9 @9 _- f
- let info = {
0 U0 t$ H1 B5 h5 T - ctx: ctx,+ G! D9 n+ l, D1 o! n" g
- isTrain: false,
$ x7 v' r- @2 J8 z, [ - matrices: [mat],
6 \! N' P" b0 [* s/ O k' n - texture: [400, 400],' W6 D% S. _# w/ w& D3 n+ V
- model: {2 e7 u. f1 t! e" D4 G) M# V& u2 w. v
- renderType: "light",
. L1 p: l$ k! o: D; E - size: [1, 1],0 @& Z6 T+ @' o6 G5 k$ M
- uvSize: [1, 1]; _4 M" s0 w; K. O
- }- M8 D, |7 e p
- }; E" D+ q- v) R. _: R! l
- let f = new Face(info);4 ?# [1 Z3 |+ K& R/ [
- state.f = f;3 J' D& `. |/ H' p, g8 |
- / A2 s/ X2 M+ P
- let t = f.texture;
" D+ P$ ~/ o2 H, x2 Y - let g = t.graphics;4 V- j$ p+ g" X" t/ j
- state.running = true;. N" ]6 T3 ]5 W; e
- let fps = 24;
, \; V9 n7 k# h( n9 C M4 s7 \ - da(g);//绘制底图$ z; B" |; ~' A5 h
- t.upload();
- V j8 b L9 _# ^0 b - let k = 0;
( [ D5 _6 ?' P* V& y - let ti = Date.now();
/ `5 i5 I+ ~7 q( j( q% T# m+ l - let rt = 0;: F: l+ B% P: Z# ]' j+ P
- smooth = (k, v) => {// 平滑变化& R# @4 u, r$ `( M1 ^3 z# A
- if (v > k) return k;
! d& I: L7 q C - if (k < 0) return 0;/ z8 A$ q# o9 I8 ]. o
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;$ |( q6 n/ K+ G2 s! T1 Q8 |7 G+ F* r
- }
( Z- m1 A' W6 F7 J* ?+ E b - run = () => {// 新线程 W1 F: {* r3 \% g; T) O. u
- let id = Thread.currentThread().getId();
3 s) @3 s2 B+ Y8 q/ F - print("Thread start:" + id);# b: _$ Q9 A* ?+ ]% |' P
- while (state.running) {
1 D8 {1 g. r: E7 U& @# j- g" b - try {: V( x ]$ ?, a$ Y ~
- k += (Date.now() - ti) / 1000 * 0.2;
3 G6 R- w1 t. G - ti = Date.now();
& b4 s* ^/ J& W0 v. H - if (k > 1.5) {
& ^1 X7 w. b) k8 |( g - k = 0;9 ]! L/ u! g: \4 ?0 v' S
- }
- p: A( ^& ~# j3 p/ n+ h u4 u - setComp(g, 1);
+ J. a6 T: W7 u, f6 o - da(g);
5 _0 z9 {+ B$ l% X, x/ D - let kk = smooth(1, k);//平滑切换透明度
6 B' X$ X v4 T - setComp(g, kk);7 x/ O& `9 A1 P( c) v
- db(g);
- g, L9 P2 G l r - t.upload();
/ e8 c$ ?% F' @0 S5 u3 h# R - ctx.setDebugInfo("rt" ,Date.now() - ti);" m6 ^$ K3 V5 u3 e0 T
- ctx.setDebugInfo("k", k);
5 ?5 O. t4 b' \4 [/ A4 f - ctx.setDebugInfo("sm", kk);: b, a+ I' N: s( o
- rt = Date.now() - ti;" V0 F% t) B D+ i- W; V
- Thread.sleep(ck(rt - 1000 / fps));
g% {" ~7 Z3 O' l' v6 ` - ctx.setDebugInfo("error", 0)0 F, s9 o8 P1 _7 L/ L
- } catch (e) {, c k1 Y, \9 k6 U p* c
- ctx.setDebugInfo("error", e);8 v/ n4 T/ |6 c5 E4 n* t+ x
- }
' \0 q( S* e2 P* ]7 ^. X4 [' B - }9 \1 i9 D9 W0 b0 U
- print("Thread end:" + id);6 Y% v3 Q. `6 b$ p( t; n% e9 W/ d8 j
- }
- Q8 N) y7 h5 g) R& N/ C Q8 K - let th = new Thread(run, "qiehuan");. ^2 @0 m/ i1 O7 t; s2 I
- th.start();
/ n4 X4 o) `* R7 |. A5 m - }
: d7 _0 M: H9 b9 H8 Q, B
3 j3 m8 E# s$ v- function render(ctx, state, entity) {2 M( N9 H! E; x. b# Q
- state.f.tick();6 e$ l: d* w+ D' ?4 |) _. g
- }
/ z- j6 |5 G+ e4 S D% z. T( _ - ( e! M K' K" [- S7 c2 O8 L
- function dispose(ctx, state, entity) {
8 J" M% m# F2 W# l5 m3 Y - print("Dispose");* W+ S: K# E* P
- state.running = false;
/ }; p/ t9 c! u& K9 ~+ Z) W4 S8 C5 R - state.f.close();
1 L# f- Y5 G! ^1 Q: E# J; { - }, V& ]& C: f! r9 @0 t
) v4 U8 s6 Q8 J- function setComp(g, value) {, K1 P. W# t/ X* G% P
- g.setComposite(AlphaComposite.SrcOver.derive(value));
( L I: s( _2 S" F6 g# e n - }
复制代码
7 C% A# d4 ?" y: j. q ]/ {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。0 d& d' `' e4 o! ]2 y7 X' A
9 G, n( Y d- B5 ^* p1 [, p8 }- @" Y: J# K0 u0 m! ?
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)% g! [, K7 _ c' ]3 C+ M7 \2 O0 t7 c, m
|
|