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/ h1 o' _3 Y2 ^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。* a' R; a& |0 C% h" ]3 G% l
- importPackage (java.lang);
* U! @2 m# M0 l+ R4 d - importPackage (java.awt);1 u0 _2 S) q, _# Q, |& `
- U% F+ N, v/ w: X* ?9 ?( M% r
- include(Resources.id("mtrsteamloco:library/code/face.js"));9 H; I0 o5 ~" J0 l% m
! f! \2 h C+ r4 m- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
) S/ T" C% e# N7 @
1 l0 I6 P9 r; s s- function getW(str, font) {
2 [- a: T9 v- c+ V8 D* U - let frc = Resources.getFontRenderContext();/ q! l. Q. ^ f6 z' }
- bounds = font.getStringBounds(str, frc);
/ h; W) y x+ U' V; _ - return Math.ceil(bounds.getWidth());) T- o) ~) G% F4 {5 e2 d2 a! w
- }7 A; j# [; I8 \/ C
# @9 B2 n# e% F: w: f" L- da = (g) => {//底图绘制" _& c) e1 g1 g
- g.setColor(Color.BLACK);/ \. [9 `' `$ J: {3 x! l8 ]# V9 ~
- g.fillRect(0, 0, 400, 400);
% \- N3 q0 c2 `: n2 d& \; v - }
8 Q9 J# H1 u* _( S% U6 m3 y; H+ g - & S0 @* ?* u' D" }; _( W& `
- db = (g) => {//上层绘制+ o# `' Z2 s1 c% O4 I# F
- g.setColor(Color.WHITE);
7 ^. w0 d7 c$ D& H+ w& x" y! x- u - g.fillRect(0, 0, 400, 400);
; J8 [+ Q( @' c" s$ l - g.setColor(Color.RED);
, M7 U; d; G d8 o: r0 Q - g.setFont(font0);) N6 o* {6 m& z* o
- let str = "晴纱是男娘";' C7 @8 g) H- D' J: K
- let ww = 400;
8 }. Z& p2 R/ \$ m - let w = getW(str, font0);1 p8 `7 J3 N% l- M' B
- g.drawString(str, ww / 2 - w / 2, 200);( S8 c$ U8 v. J) c9 d0 i. y! Y
- }" ^# |( t7 A0 j5 L$ }
0 N# E' x9 u$ @$ q7 h; C+ C- const mat = new Matrices(); ]; ?7 h- W6 C7 \- U
- mat.translate(0, 0.5, 0);
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- function create(ctx, state, entity) {
" H/ y, p/ q. S8 d& @ - let info = {
8 Z5 v3 u$ G# z( g- i- K - ctx: ctx,( k1 a B, T% V" m) i$ t
- isTrain: false,
( g9 v/ g% G$ h2 |3 C - matrices: [mat],' l8 R1 F0 K1 ~$ a
- texture: [400, 400],( @+ E5 g' z5 Q7 o# p% t" H, t, U
- model: {
A! H" a' A" r+ T% s - renderType: "light",
) B9 t2 K" w( r7 a - size: [1, 1],
5 |3 W) m8 C7 I$ V - uvSize: [1, 1]0 d& i3 N' w8 [; c# j; K
- }
1 {' A7 S" U4 d/ g0 l - }! {+ m, e, ^9 a8 N
- let f = new Face(info);. t |& W; K9 r3 J) [0 U, p" Q+ t! j
- state.f = f;. p9 }/ {6 s6 B @% r1 s4 r a
3 P+ C" r1 g2 w: D# \1 y- let t = f.texture;- [5 s- k% @4 |1 ^* M$ G
- let g = t.graphics;
& t4 T. e, B8 ?1 h - state.running = true;) @1 X/ |- P. }7 H6 u; Z5 T! C
- let fps = 24;" m1 }$ s0 w4 e2 h( e% j+ g' o- l
- da(g);//绘制底图
0 J" B$ R: R+ \( ? - t.upload();
2 q8 z% D" q4 N7 b* Z. k - let k = 0;6 {# v% ~ f2 M# _
- let ti = Date.now();/ w: \; @, H/ t+ |3 Z
- let rt = 0;; q" Z2 _; {+ I8 i! D d0 c
- smooth = (k, v) => {// 平滑变化3 O: _0 R: t3 @0 ?: D
- if (v > k) return k;
0 S2 y I% X( M, C, B - if (k < 0) return 0;
^$ h2 Q7 `( f0 M' z: l" W - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;8 b- C- y3 W6 b, C7 ?+ [
- }: D, {6 J! a# _' @" D0 ]
- run = () => {// 新线程 g5 x1 g5 |4 E9 H
- let id = Thread.currentThread().getId();
4 f& U' T: F0 w0 O - print("Thread start:" + id);
# Z; `" H- Z( w: P7 a8 g8 f5 A - while (state.running) {
) h$ @2 C+ ]; i) p0 V - try {
5 L% n, R5 E, ?$ Q* o ?! ` - k += (Date.now() - ti) / 1000 * 0.2;
2 h8 n7 L; u5 d" ?" @7 D - ti = Date.now();% } a: f; _* d
- if (k > 1.5) {
4 _* ]+ f4 ^- }* e - k = 0;
0 h2 l. C: m d7 |' M8 i0 U - }; S# K6 s+ r9 `1 j0 |
- setComp(g, 1);
& P0 `* P+ Z3 v# T+ E% J- c- s - da(g);# r$ S/ e- C) @3 h
- let kk = smooth(1, k);//平滑切换透明度: v/ z+ d F3 ^. a' [
- setComp(g, kk);
$ G1 Y, l W7 ^7 U1 Y - db(g);6 {: p( _1 {" b+ x
- t.upload();
4 T ^- j$ R6 t3 V: X. y - ctx.setDebugInfo("rt" ,Date.now() - ti);
+ b- }' ]) z) X: Q6 R - ctx.setDebugInfo("k", k);1 d0 k8 }$ K2 v/ O+ `
- ctx.setDebugInfo("sm", kk);
; ~0 U. \4 ]2 x& A+ l" f- I1 N8 Q - rt = Date.now() - ti;6 i5 e3 x* U) Y; Z
- Thread.sleep(ck(rt - 1000 / fps));) Z5 g$ \0 A9 N3 t& ^- `
- ctx.setDebugInfo("error", 0)
& c1 |! R) [- t- a - } catch (e) {
- ~: ]% g2 y3 t0 W - ctx.setDebugInfo("error", e);
X/ S6 g7 o4 J- S- s: H9 E - }
% l" I) P$ r" w* r9 n! W - }1 \% n% N! m2 j/ ^
- print("Thread end:" + id);
: F5 |7 {* l& S# O+ A: y9 k - }
: Q; a9 L% `8 D. L( }8 l) m" G3 j6 Z - let th = new Thread(run, "qiehuan");
& z, j9 m1 E1 R - th.start();
1 i2 i, Y& q+ C( `/ C& O {- Y0 _3 \ - }* g5 z `4 V& E
- ( o b8 h! m8 g: C' x
- function render(ctx, state, entity) {- D4 J/ a$ S9 U* V/ o) g
- state.f.tick();
3 t N d: Y0 D& u - }
. o, N5 B) e+ w. d7 [- M+ A E
~; n2 ?- g" C; h7 Q( |2 i- function dispose(ctx, state, entity) {
, G% x3 l" @. |1 j) L - print("Dispose"); y2 F! G% @% u
- state.running = false;
4 B+ f. L, C* Q' m - state.f.close();! c5 e. \ y5 z" U
- }
9 [# Y1 d' U: T0 j8 [8 o1 R4 @/ y! ] - * }$ i% P( Q* [, ^( t8 Q: W* P; K
- function setComp(g, value) {* Y& m; {7 S* b2 p; F
- g.setComposite(AlphaComposite.SrcOver.derive(value));% z4 M: ^9 e( m% r3 U/ \
- }
复制代码
4 G5 s. ~1 R* a' ]& P& }" A9 I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。
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顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
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