|
|
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
×
% N/ [( t w3 {/ g5 l( j1 F b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。- e$ Z) y" o6 a$ H0 ^
- importPackage (java.lang);
1 T$ R/ _2 j9 L) i R - importPackage (java.awt);
; a: Z% r) A7 A' c( F, a
# _( c: Y: [1 c4 k! P3 t1 c- include(Resources.id("mtrsteamloco:library/code/face.js"));
% s' f o+ S0 ^! N
, q( b s5 F3 b j$ X( W- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
; _$ n& ]: @6 G8 c1 G6 G/ o1 R: D0 `
4 A b) ^8 M: q; @- function getW(str, font) {
# t& Q0 O0 Z: E5 W - let frc = Resources.getFontRenderContext();
1 ?. j! x$ E& E4 g9 Z- D - bounds = font.getStringBounds(str, frc);
k& v4 a. f/ @) r- C: j8 v6 n( l - return Math.ceil(bounds.getWidth());# p$ }' t. g |" Z
- }
2 G- h, g9 K) L1 r% O& E8 h! r - 4 G, _9 V0 s S/ g2 O
- da = (g) => {//底图绘制
# _5 U V% b" ` - g.setColor(Color.BLACK);" g, p$ n P* w7 a! G6 b( A
- g.fillRect(0, 0, 400, 400);
5 y7 w9 {! ?' J& E4 s1 y% Y - }/ V6 b/ S1 W6 x
: [: a R% l$ y- db = (g) => {//上层绘制& ^ }& ^ i% u9 c9 g
- g.setColor(Color.WHITE);
* k: S! _" R/ e# l8 j - g.fillRect(0, 0, 400, 400);& p5 D# V& p1 s3 c7 G! l
- g.setColor(Color.RED);# C2 }/ n. K$ V0 k8 {" ]% g
- g.setFont(font0);
S0 G/ h8 T. t4 f - let str = "晴纱是男娘";( E/ N) j' l' q5 D0 a3 ~' s
- let ww = 400;
' c( N+ x. |$ `, z* L+ J - let w = getW(str, font0);
3 }4 _- d4 P; `* T. h ~& F2 J - g.drawString(str, ww / 2 - w / 2, 200);
" v+ W0 e4 J) s/ L8 c% z; f - }. W/ Z) H) q+ U/ k: D- D
" v4 V& L; c* U3 d2 }- const mat = new Matrices(); W1 F: o. d6 L2 y! { y+ y) p/ T
- mat.translate(0, 0.5, 0);
a+ S+ k/ r8 Z# L) j
J M; l6 U5 B8 ]/ F- function create(ctx, state, entity) {/ I0 j/ |- g6 L4 I# E9 k @: y1 ^% n
- let info = {) M4 o2 R% S! Z) [9 X3 C8 j) m8 e& J
- ctx: ctx,$ a9 _) i% _9 o2 X4 ~
- isTrain: false,
* W/ z* L T; {& Y9 T8 S2 S - matrices: [mat],# X! [. Y( C4 N# z
- texture: [400, 400],8 N- t* T) x& P6 {' k2 m
- model: {
. m! A* P% n9 Y( ~9 S - renderType: "light",
R# m5 G$ ^0 ?0 ~2 H - size: [1, 1],
( [6 D* a8 O) [5 u' a. s: k m - uvSize: [1, 1]
) x* |* g& a+ X, ? - }4 v1 q! x2 j, H8 b/ B7 M
- }
# h! H' n, e( [, v - let f = new Face(info);
; T/ R2 d* J4 W1 Z" x7 S1 ? - state.f = f;
) o) q6 ^' D7 j1 |/ X4 s - v! [* k c! `% j* i, T
- let t = f.texture;
/ f( j) ?; I0 X: C - let g = t.graphics;
7 b# O6 q& `5 |2 \3 \$ Q - state.running = true;' j4 A/ M% @1 ~, Z) c1 k/ U8 ~+ F
- let fps = 24;/ k: @$ c. E- X6 X
- da(g);//绘制底图
9 r+ G: b# y' |3 \" @$ c9 ~ - t.upload();
) X. N' R8 X/ V2 f i% T+ t - let k = 0;
1 q0 I! f5 T+ B# ?2 F) D - let ti = Date.now();
, p8 d$ w$ v# A; \" g" [ - let rt = 0;
- g5 g* }6 {* ]& r" E h7 f1 t4 N% p* B - smooth = (k, v) => {// 平滑变化
& F8 g5 O7 O q$ \ e( N - if (v > k) return k;2 P' D/ S* g4 n7 ~# {/ D8 I$ s! l
- if (k < 0) return 0;
# G7 `& U4 |& m% f! t - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;5 B. a' Q# d) }0 }0 |
- }
6 [9 M8 s6 |2 S G' F, m- H5 x9 T - run = () => {// 新线程5 M: o9 \6 c. V, y. v# D" W
- let id = Thread.currentThread().getId();9 i& F5 \' @1 R. ~; n6 n
- print("Thread start:" + id);; H: s( N1 t+ c, y1 [" P
- while (state.running) {
. H- \& g+ b: w* C3 f6 K - try {# D8 K# M8 I4 G8 H% {
- k += (Date.now() - ti) / 1000 * 0.2;
2 M+ j' x! ]/ Y9 v - ti = Date.now();7 E& A0 s0 T% d1 k
- if (k > 1.5) {; n5 a$ Q+ o9 x3 v, ~
- k = 0;: t7 M$ N* t2 q* _* W
- } E( }: \. {7 h# ^; Y
- setComp(g, 1);
7 B4 Y; m4 X! w( h - da(g);8 q8 @" i5 R4 K {' \ `9 w
- let kk = smooth(1, k);//平滑切换透明度4 W% b5 d( \0 ]+ D
- setComp(g, kk);! r$ Q' v. K# q
- db(g);
: @1 w* Q6 b: a K, Q* D( } - t.upload();9 R* J; ]6 a6 h4 y8 J% m- M, B
- ctx.setDebugInfo("rt" ,Date.now() - ti);) y; ^6 Q: E- [. ]1 i/ w/ z2 N+ `0 l
- ctx.setDebugInfo("k", k);( N; D/ f: v5 Q3 Y# g% J
- ctx.setDebugInfo("sm", kk);9 @& R+ A) {) @7 G: _
- rt = Date.now() - ti; @% d/ |" h5 f. g1 b2 r
- Thread.sleep(ck(rt - 1000 / fps));
9 b! t+ W. _# z8 } - ctx.setDebugInfo("error", 0)9 @/ m; h* ?: ]# B+ ^
- } catch (e) {
1 N$ z- ?) F: e - ctx.setDebugInfo("error", e);
. z3 Y+ q' r( b T! V" Z - }- q3 a1 ?1 F$ k
- }; u' c9 g' K% y" G( O& I5 p
- print("Thread end:" + id);
6 s: {0 Y8 J3 D& j7 Q4 _) a - }" N( I ]# ?; x- {$ ]" D$ c A
- let th = new Thread(run, "qiehuan");
# I% P, ?1 y; {, N$ A* i8 e - th.start();
2 n; o: K" z. Q$ ?3 _; N - }! h1 ^0 L |0 n7 u' C9 V- b
$ v* i% Z" l$ G1 \3 {5 u% Y9 Q- function render(ctx, state, entity) {) S$ D* c. d( q
- state.f.tick();" b$ W& Z+ \1 ^! {4 x
- }
9 F/ `% H. F& f: f8 N$ S
0 k+ o) F+ t, p0 B- e0 N- F- function dispose(ctx, state, entity) {
% U; m5 o V. z/ D - print("Dispose");
; H! z( O: o& C - state.running = false;
4 F. L" s8 H0 L. c8 Q9 @ - state.f.close();
+ {( z7 H9 ~* n. O& ^ _2 s - }; x! v! O5 |0 F# N) g$ X
! q2 k3 B" f p2 i- A4 |" Z- function setComp(g, value) {
& O7 Y0 U9 K; P6 ~1 q% m2 r - g.setComposite(AlphaComposite.SrcOver.derive(value));
2 R' \+ X& U7 V5 w* A - }
复制代码
+ @1 U$ J; f, L2 A8 y$ i, l* 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。( [9 i9 G9 @- u: `
2 f. t8 J. o) ^ o8 w$ C: S I p9 z7 y$ D0 M' P6 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)
6 S, a# Z: j. O7 U" Q2 u8 ?6 x |
|