|
|
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
×
% a; J( p3 m/ Q" q/ 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。
0 A+ @, r3 r5 Y0 R! x) |- importPackage (java.lang);
7 g* u+ j/ P, [9 T - importPackage (java.awt);4 U. n2 S) s: e+ F& r
- # K1 O- w* |/ ?. Z! m2 ~- {
- include(Resources.id("mtrsteamloco:library/code/face.js"));+ T! U6 U/ T/ Z3 m* U5 a0 Y
* ?8 U x( X2 p/ D* F! ^- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
$ N& Q; b/ M0 c - ( Y- K p [, w1 i, E( ^
- function getW(str, font) {
9 F: t5 p. ^# ~& F; A( l) ]: H: @ - let frc = Resources.getFontRenderContext();, E$ K8 `" F! R
- bounds = font.getStringBounds(str, frc);
5 N, o% b- t4 J - return Math.ceil(bounds.getWidth());7 ^- W$ H7 u8 i# l
- }6 y5 w7 C5 G. \
2 Z- [0 f6 d% m1 M- da = (g) => {//底图绘制* x3 j! H2 P5 i% C9 Y
- g.setColor(Color.BLACK);
' M8 |- {# v1 [2 f7 ~' \ - g.fillRect(0, 0, 400, 400);! F! V X+ {4 ?
- }* p" x: U& r8 ~
- , ]0 t* u7 Z, G2 f/ k) {
- db = (g) => {//上层绘制
2 t% M- R" O9 s5 b, q4 M - g.setColor(Color.WHITE);1 K8 |# u# x5 V# C3 S3 O' t
- g.fillRect(0, 0, 400, 400);$ N; P8 l" ^3 j% n1 u2 |
- g.setColor(Color.RED);
- Q* n: N3 s( u8 `' e - g.setFont(font0);* c! V ~1 T+ S: h4 l/ n4 j
- let str = "晴纱是男娘";
% c" ]7 w, {2 L: g/ R - let ww = 400;
- J4 W+ {1 A% I; A3 x* I2 j - let w = getW(str, font0);; Z6 p9 n, [& N
- g.drawString(str, ww / 2 - w / 2, 200);' H, f6 [6 ^! [! C
- }+ j. I C4 ?" B# h
* ]' P+ `0 Y2 |/ d5 ~. G- const mat = new Matrices();* ]: z t+ a4 d9 p2 l6 v
- mat.translate(0, 0.5, 0);
: }0 g6 [( F. @: z& p% v
" H [- [- A% U( H& O) H- function create(ctx, state, entity) {
. ?! K! i3 _2 U9 K - let info = {
! r5 \7 L% F( L; ?, y! x: {9 l - ctx: ctx,
& o& u/ }! C- E1 W' u( y8 K( I - isTrain: false,% H* E4 L" d" j! r& o
- matrices: [mat],& t& x1 U+ }3 U" C
- texture: [400, 400],* D! Y/ e! f, a. s9 z. f. e9 ^
- model: {
8 w' s% t+ Q% h3 A. Z - renderType: "light",
k7 y4 x, q" F& [& N - size: [1, 1],
+ F. s0 M7 K" W - uvSize: [1, 1]
: F% g0 F! y; X( g - }: `+ l; @, X, K& m. R
- }1 a0 n0 {( D. ~, x$ f7 l
- let f = new Face(info);
" \/ `+ f2 Y O$ Z - state.f = f;
& v( i7 x: k0 p& e8 R. Q
1 R! G3 L! y$ ^) R2 X- let t = f.texture;
( Z* I2 a, G. T - let g = t.graphics;
8 y5 ?: U7 m r% g9 w1 G b - state.running = true;- c9 J, a4 }6 X' w
- let fps = 24;
. Q- ~' q- `1 x7 H - da(g);//绘制底图
/ o5 R ` ]# b# V; P0 H" D Q - t.upload();" F4 {+ s7 _, D# u, H! M* V
- let k = 0;
4 R- N9 Z5 B( K - let ti = Date.now();8 H2 g& l- H( E7 v' o
- let rt = 0;
+ [- N& X2 h7 O+ M) S - smooth = (k, v) => {// 平滑变化/ C" j) S; H) C
- if (v > k) return k;
2 j* ^2 D' }) c - if (k < 0) return 0;
' Y6 H1 `/ n3 F! Z! k, b7 g - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;- Y0 s$ @( l0 f# J0 }+ \/ V
- }
# G2 C2 u0 Z" X3 J2 u* r- q0 n: O - run = () => {// 新线程4 Y6 N5 z/ N$ @* i+ g' i
- let id = Thread.currentThread().getId();
- u% L% a1 o) e& l) D U - print("Thread start:" + id);1 q$ e# n. d9 Y, W/ z
- while (state.running) {
5 O* i$ {, h7 F9 l - try {
; `2 x+ J3 m; b2 Y) O - k += (Date.now() - ti) / 1000 * 0.2;
' b5 w& A" D! n. S. i- X: M - ti = Date.now();
7 I& B! O0 w( A1 L. t7 X' R6 Z3 p - if (k > 1.5) {
! G( |1 x# D; J+ ?9 j4 Y - k = 0;! ^/ M, f. f9 w V6 E0 |
- } H4 N% Z8 j6 v E/ @2 _) S
- setComp(g, 1);
$ c- ~- G. j. Y+ m) a( V ?+ F' J - da(g);
/ p% J8 E6 M7 ^( a - let kk = smooth(1, k);//平滑切换透明度
% c& o4 \# s$ \4 M/ ] - setComp(g, kk);
. E) o7 o' P- T) {# R - db(g);" T4 G2 n5 X9 ]! U0 o7 x* {4 U
- t.upload();
& H/ X- k/ J/ S; Z% c7 J - ctx.setDebugInfo("rt" ,Date.now() - ti);
0 S4 n7 Z) N6 P% z( M, ~/ i - ctx.setDebugInfo("k", k);" e& ?1 M4 @3 J
- ctx.setDebugInfo("sm", kk);8 a, S( l0 ~" W- Y
- rt = Date.now() - ti;
7 {7 t( \+ |9 J8 L - Thread.sleep(ck(rt - 1000 / fps));; I$ Y3 w/ ~6 s% a
- ctx.setDebugInfo("error", 0)0 S& @" G) B; O" y
- } catch (e) {
/ N2 B% l4 ?0 u4 s, v. f' _) z1 K5 x - ctx.setDebugInfo("error", e);, ~/ H- ~+ L8 [; T2 [
- }5 z9 ]# k7 I7 R, o' F
- }
( n3 J8 q& |: C6 l) d - print("Thread end:" + id);9 c3 t5 p- S5 A3 Z+ `
- }
3 Q \" ]+ N5 u7 W - let th = new Thread(run, "qiehuan");, w3 |3 h2 \6 v6 [" m* W% @
- th.start();& x3 T+ ^% K6 ~- q- I+ c
- } z5 M; U+ Z, D R) V4 Z' E
0 L7 [+ h) x2 E' E- function render(ctx, state, entity) {2 B8 J L: q( s! x; c/ {8 a
- state.f.tick();
2 t" l- Q+ \1 g& P1 v - }8 Q$ j6 x6 o: q: ~! w" v$ |. L7 ~
$ f1 b3 b& f. h/ j. H& N" |- function dispose(ctx, state, entity) {1 }0 d. {% ?& q
- print("Dispose");: b6 z. e% `& f6 S T
- state.running = false;2 A4 V0 E" H. X3 [( a9 ?" d8 r* a
- state.f.close();
5 a$ \% C8 F# z" l: b - }
) e+ ~4 K( D* V) p" v6 }9 O l
9 V1 n" A2 V- \$ H- function setComp(g, value) {$ S- {6 E! V4 m# l0 b1 B
- g.setComposite(AlphaComposite.SrcOver.derive(value));
\* C( ^+ |8 W - }
复制代码 # o3 e* h: [* l5 [2 h: O7 ?
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。
$ x" C2 o8 v: `, [! k, m
0 }: j# K1 _$ r% @* w' g" b/ C% c' ~1 ^" `4 x4 t
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
( z t1 q! z! G4 X7 x7 e |
|