|
|
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
×
! [$ M, N% }# p6 X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 e- e" w& n# c& `- importPackage (java.lang);, {9 _4 o! o( U5 F h
- importPackage (java.awt);+ `2 j& Y# ? ]$ e: G1 {
- 6 T5 o4 q8 H8 E! z# N
- include(Resources.id("mtrsteamloco:library/code/face.js"));7 ^: T$ d& N7 u
- 9 _" g8 U4 z* n( I2 ^; j
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
6 J: u' G$ w( c4 S5 Z q7 ] - / H. T, l1 [4 h: e, v I# h
- function getW(str, font) {8 [) y. k2 k+ v: [+ z0 Y1 c
- let frc = Resources.getFontRenderContext();7 W3 M, |4 c2 i- k
- bounds = font.getStringBounds(str, frc);
& `+ n" v* `$ X+ h0 n3 J - return Math.ceil(bounds.getWidth());
- F& t- M& Y3 @, B1 P - }3 h$ X H# [; w7 c& r% Y& n& A- q. \
- G: X" ?" H, @1 S
- da = (g) => {//底图绘制
' d$ R% |8 j* w/ C- g2 P8 V6 f - g.setColor(Color.BLACK);0 ^' _- ~- N a5 `
- g.fillRect(0, 0, 400, 400);
1 h6 D, U7 {; V5 x5 ^1 e - }! H3 e3 c: R0 q( A/ ?
( o$ v4 o6 i# X, ^ |) X* E- db = (g) => {//上层绘制
8 }& ]' }# b7 N - g.setColor(Color.WHITE);# y: h2 Y% [2 C' i$ k6 Q
- g.fillRect(0, 0, 400, 400);
. k- B- ^* j. o5 L6 x& k9 v - g.setColor(Color.RED);
2 _: `9 l6 Y# K8 G. q2 ~3 W - g.setFont(font0);6 u( h4 x+ G8 \8 E
- let str = "晴纱是男娘";
0 {7 D) f/ M6 r; ~, i. V - let ww = 400;
* d+ v3 ]% U4 }" V2 E* z - let w = getW(str, font0);
8 v$ W9 i: _% O$ C( O - g.drawString(str, ww / 2 - w / 2, 200);9 Y. F9 t% @; A: P) N) R0 W+ m1 d5 n% i
- }
! ^9 \/ l$ T# D: b) Q( O4 _$ N - ) g$ [ q6 }, Y+ {
- const mat = new Matrices();
# D( p+ A/ N( S6 a+ g4 N - mat.translate(0, 0.5, 0);( r) ^9 D9 Q0 { e/ b' n0 u/ N. x
: v3 I' Y! O }8 u" [ q- function create(ctx, state, entity) {& z7 b+ U+ E q3 C+ [
- let info = {$ A* F: B D z0 J. m% w
- ctx: ctx,
" u* {( d7 d/ o7 x* J' L - isTrain: false,
9 x& d: v% @: M8 S - matrices: [mat],% j4 ^5 A/ j, V# N' _$ t4 W; `
- texture: [400, 400],; U# R, V7 ^" @) c0 ~. }( @
- model: {
9 K( z* N% Z- `# H# f - renderType: "light",$ k5 S* z5 b7 G8 H
- size: [1, 1],
$ z- \" Z4 x- f% m) k! @: i6 w - uvSize: [1, 1]* V6 [$ f5 l0 v6 y) s; s
- }
3 T/ b0 d: e/ m" w# f0 P - }1 S. X7 l6 Q( c( H- y7 t
- let f = new Face(info);; F9 x* E/ L* b: m* g8 }
- state.f = f;
( y2 h1 [: M* @- W i2 m - 8 A. r9 g, o* S8 Y9 e
- let t = f.texture;. }7 W5 \7 s, c5 }+ n. l
- let g = t.graphics;
4 X; D; L1 `( t - state.running = true;
7 s W; W- g b% d% U4 v- r - let fps = 24;1 S) v. J% f8 a
- da(g);//绘制底图
% U4 Q e' U9 A% D - t.upload();
* C1 t/ l8 ?$ k - let k = 0;
V; f2 T. v6 C( i - let ti = Date.now();
, i& S& q A+ K, ]/ B' n - let rt = 0;
( K; E1 a9 e; }+ W3 a - smooth = (k, v) => {// 平滑变化
- w% ~- G O: k# ~; K - if (v > k) return k;2 m6 P) `: B, o. d
- if (k < 0) return 0;4 g. Y. u1 L$ d0 n
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;4 M* g) M/ k8 r. G1 h" B& ~" g
- }
% v5 `# p- {2 o5 X. \: S2 R5 v( o - run = () => {// 新线程4 y' A* z* {6 ]) _
- let id = Thread.currentThread().getId();
7 o. k0 Y, B9 l, W - print("Thread start:" + id);: G" ~* p+ |9 h! E
- while (state.running) {, u+ F& y: @+ _7 r
- try {$ t: p) [4 Z! }6 F# O
- k += (Date.now() - ti) / 1000 * 0.2;
& K' T- @* L2 W/ [ - ti = Date.now();: h" \( Y+ Z: S Z
- if (k > 1.5) {7 |( p$ w: J) i+ s, V
- k = 0;( }: m- C: H1 s" i" g+ E
- }
# L Q) G" r/ @ e - setComp(g, 1);
+ @( I: t! v8 B; {$ G! _- w% I$ h - da(g);0 z# K; @, [% u' l, y+ ], H3 g
- let kk = smooth(1, k);//平滑切换透明度4 @7 h i# ^2 N L6 @
- setComp(g, kk);
' _# i) c6 d; _' O - db(g);
$ z; E# v0 N! Y' H, W: k& g- y Q - t.upload();
$ a+ A' ]6 c4 @& c& i9 j - ctx.setDebugInfo("rt" ,Date.now() - ti);
9 j! H- i+ Q- Q" {/ r8 s0 m - ctx.setDebugInfo("k", k);
5 q' d; {* R) `# L - ctx.setDebugInfo("sm", kk);6 t& Q3 t1 m6 @. w" n
- rt = Date.now() - ti;
0 Z- }6 a& G$ X6 `5 y - Thread.sleep(ck(rt - 1000 / fps)); E; u& t/ \* z, f$ N/ a
- ctx.setDebugInfo("error", 0)
. ~+ ]8 J, P- @! I2 g - } catch (e) {2 I9 l1 L g& ?
- ctx.setDebugInfo("error", e);
1 c0 c' W' | _1 R4 c - }
/ C8 t4 s3 Q5 \( [ W5 B4 [+ y - }) S6 i) r: U* f( o, h8 ]$ M1 ?2 S9 S
- print("Thread end:" + id);4 r+ \) O4 Q6 p q
- }
( E% ?$ c7 G5 ] C, L - let th = new Thread(run, "qiehuan");
& p6 \: j* X, \7 s% R - th.start();
+ F1 q( j) `3 |! {2 C. u - }, f3 [) O- o% U& N# y
0 r. |7 T+ G" R( h. ?- function render(ctx, state, entity) {; I1 Y' ?2 i3 h$ p; E- z
- state.f.tick(); }# Y. _7 W( E3 ^
- }* y" J& R& ]$ {. b7 d
- ; \# S( O% A( v
- function dispose(ctx, state, entity) {. h% p( \) S0 a$ ~/ s( A
- print("Dispose");; Y* S; l+ d2 c. t" A8 U# y" A
- state.running = false;
- X, s. _; ~& u' d( a! [8 W) k+ F - state.f.close();
5 @7 e& g6 U5 Q* F' s - }
. P! {' j9 M# j3 p# ]$ t) v0 ] - # z0 r& R" C' N: d0 B) x1 j# N
- function setComp(g, value) {/ a/ o2 |$ J3 C5 j6 Z4 T* W
- g.setComposite(AlphaComposite.SrcOver.derive(value));
( k7 {) ^4 x. X7 ] e - }
复制代码 ) u+ L3 _6 z! c M
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。; E7 U# \ H- ]. |/ L+ x; h2 y
% a9 H! C3 n2 G5 N: S
3 _! [. J' ?7 u Y+ U. l2 j" z顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下); d5 F8 N0 R+ M6 [ h
|
|