|
|
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
×
7 K! ^" d; F: _6 q0 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。* D& O1 S3 F5 p
- importPackage (java.lang);
8 t2 ]6 \1 N2 c. R - importPackage (java.awt);8 |" W* t0 ~+ y2 H6 |$ \3 w2 l
- D# p) g' ]7 v5 U' F) C
- include(Resources.id("mtrsteamloco:library/code/face.js"));4 h9 ~! j' e5 E
5 ?9 w0 @: `1 M6 S2 V9 T0 g' i9 Y- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);) [+ G) l) X$ c& Q" O7 D
/ C8 |0 Q3 o; X- function getW(str, font) {
# J5 Z# z, @4 L j5 t - let frc = Resources.getFontRenderContext();
" f3 r1 Z7 Q6 F# L' O+ B' [ - bounds = font.getStringBounds(str, frc);0 \& X$ v* Y6 o$ S0 c- M+ Q; k% u3 t& g) @
- return Math.ceil(bounds.getWidth());8 b# J% c6 n' L8 ~& C
- }" G# A6 ~2 t- q8 p
( k8 s6 h# y; r7 b- da = (g) => {//底图绘制
6 ]: ^* P9 e: x' d; G - g.setColor(Color.BLACK);# U8 p8 {8 y0 u
- g.fillRect(0, 0, 400, 400);
# L) f$ {4 V; R- l - }
! d% v2 l- ?, r6 A) x$ e# x5 t5 w - & `, f3 L7 p6 P4 S2 @5 r7 s' d, J1 w
- db = (g) => {//上层绘制
2 b6 |0 P. ~/ Z$ c2 b - g.setColor(Color.WHITE);
- X7 y& ]3 x+ h7 R - g.fillRect(0, 0, 400, 400);! P8 J: \$ F" e3 S: l. |, ]- P: r" q$ F
- g.setColor(Color.RED);4 A, Y3 o. W9 d/ _
- g.setFont(font0);& z T3 {, |& ^3 A% }) t: s K
- let str = "晴纱是男娘";" c& u/ L+ }/ ^ T2 h+ {" F
- let ww = 400;. v' |+ Y# r9 E" u
- let w = getW(str, font0);$ }4 N0 X6 e+ U" Z0 Q- |
- g.drawString(str, ww / 2 - w / 2, 200);! d4 x& |9 R7 r; H
- }
" z1 Q$ d6 H+ B% X) J - # Q4 ^" Q) G/ E7 {
- const mat = new Matrices();
/ s; Q2 e2 g' _" Y# z - mat.translate(0, 0.5, 0);
% f9 j/ N* k" Y2 `6 B. Z - % M K5 |: C! n! i0 m
- function create(ctx, state, entity) {
; G6 @$ \ s+ h9 v - let info = {
9 F o( h# u' t7 s5 U - ctx: ctx,: q# v$ |7 Y' i# b b! m/ b
- isTrain: false,
: k( }0 j/ _. l7 M9 M- W" H - matrices: [mat],0 W' q: y+ |# p0 p# P$ j3 |7 d
- texture: [400, 400],
9 n/ k2 w; t% B5 V& [ - model: {# W7 m! K' ^3 A9 q1 h3 T
- renderType: "light",/ G7 f# C' b( H+ S" \7 y5 B
- size: [1, 1],# v1 C4 W3 D# b+ {' s8 W0 e C( c
- uvSize: [1, 1]& D; a: ?8 _. }7 Z
- }, M( {8 l3 @" `6 y! v6 T- ?& e
- }
) c) ^5 \4 ^9 e' q, t. c - let f = new Face(info);0 h' {7 X6 z( w6 ~
- state.f = f;7 G$ C4 D& e, E0 s3 ^) Y
% G0 i, f' o. ?1 y9 t- let t = f.texture;
# z& J' H7 o6 m& i; H# `& q - let g = t.graphics;
/ B7 H+ R5 I1 g( i' V" b, Z6 a1 h - state.running = true;7 p. n4 O" Y- w- r7 L1 V
- let fps = 24;5 |. m/ F5 s+ a8 q
- da(g);//绘制底图
9 P5 h/ X5 N4 Y2 E/ M; E - t.upload();
* a) ]4 C6 B' ] - let k = 0; W- T8 j* E" E, A6 G; r% N
- let ti = Date.now();
% x0 }. T: y. G" N2 y5 e - let rt = 0;
4 F! c& M0 p- h - smooth = (k, v) => {// 平滑变化
2 `7 K7 i Z/ z$ I3 ^' ] - if (v > k) return k;
6 [9 X/ A4 H- _ a2 A2 r - if (k < 0) return 0;' B4 T w2 D7 m- p
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;" x$ }1 {( |/ \- _5 I* I1 r
- }
9 t5 `! d8 ?5 x- f5 n - run = () => {// 新线程
/ `, l. u' C- X; B5 O9 t - let id = Thread.currentThread().getId();
1 O1 R2 V* \ O' ~& \6 \% D - print("Thread start:" + id);
; |! `" o+ Z8 C6 h a4 ?( B% } - while (state.running) {" O( ^' p2 O5 w) H, B
- try {
/ A% a2 z2 J W n9 r$ \ - k += (Date.now() - ti) / 1000 * 0.2;
$ {3 c0 _/ V X* I& N$ z- u% P - ti = Date.now();1 ^8 F! E0 Y4 H7 l: @
- if (k > 1.5) {2 n h9 @5 V6 ]; E
- k = 0;* V6 D6 _! x4 i& o1 Q6 N3 d8 `
- }
3 x: t$ x# q! l, h& f/ a( q! C - setComp(g, 1);2 S$ v: B% G! F/ ^
- da(g);0 J3 P5 ?) c- O4 ]
- let kk = smooth(1, k);//平滑切换透明度
4 c( B# @7 \ _ - setComp(g, kk);
: I+ u8 p4 z& B9 a5 T; u. u - db(g);" w2 r0 s. b- N& \! y9 x, l& R
- t.upload(); _, J; j2 _: i% Q
- ctx.setDebugInfo("rt" ,Date.now() - ti);
! O& a! G1 F- a& l$ C. }# `+ U# k - ctx.setDebugInfo("k", k);( _# t5 i% |3 ]# V' o! w$ P3 V
- ctx.setDebugInfo("sm", kk);
# B. u* N* h1 k* _ - rt = Date.now() - ti;
+ G% l# p$ v' ]6 q) j - Thread.sleep(ck(rt - 1000 / fps));: j4 f; f: e8 S. h* ?
- ctx.setDebugInfo("error", 0)' K5 T f8 K5 E0 L9 I( R1 b
- } catch (e) {
. n7 V+ @* M% C& y0 n - ctx.setDebugInfo("error", e);
8 f! e- h" _* N S9 z - }8 p f/ @: V/ [$ x3 k
- }
- p7 l/ b+ c+ W$ J - print("Thread end:" + id);
" f- c/ o t8 }. G3 u$ M - }+ W' l; \2 S5 C! X% l% h. |
- let th = new Thread(run, "qiehuan");- [ h% O. Q/ y0 I' z' m
- th.start();
8 u$ p( m1 u& o# J7 ]# n! }5 [ - }
) m( m) ?( \' Y- k9 j1 q
8 `6 Y3 ^- w6 W5 a- function render(ctx, state, entity) {( {8 B5 Q- M: Z7 m
- state.f.tick();" s2 ~( ]9 ^! x/ f3 [
- }( D- d# t3 \7 | J, }
! B# S6 g" J8 J5 D/ y3 o- function dispose(ctx, state, entity) {
9 W( R( y0 d( v, N; a$ O - print("Dispose");
+ Q! K% A$ Z4 z& K3 s - state.running = false;
9 Z5 }( ]: S# `+ o4 j - state.f.close();) E, T- l8 F' V7 @0 Y$ j0 |
- }+ d/ f Y; r! @
7 Q. ?9 E& {" x- function setComp(g, value) {& H+ \; b* `# N0 f" c- S! Q7 Z
- g.setComposite(AlphaComposite.SrcOver.derive(value));4 ~# V( k& n. ~5 C8 H
- }
复制代码 " ~$ r: D: r, }* {# C
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 |1 Y. h4 @ ~4 c" ]. V9 ^/ L6 I5 [* J! S. S+ r' S: y
& F+ C( J5 j V% `
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)7 o* a" g( h# h, {0 k ]
|
|