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. V4 y0 n1 ^3 {' M( q/ s8 m* c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。, O1 p# H9 I. a
- importPackage (java.lang);
" s3 |/ |( `1 M4 }9 t& ` - importPackage (java.awt);+ v& L/ |! V6 U- b* S- L4 C
- 2 X% Z. z& O, F2 R
- include(Resources.id("mtrsteamloco:library/code/face.js"));: Q) f" b. h# A1 I, f6 N
: V, S8 ]8 H1 _4 L3 Z! G- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);1 _' q7 |, q% T9 w7 E# K* [
. ?( v C* q! R7 u) ?9 n- function getW(str, font) {
1 g1 d. [' x: f) ~( ~8 E( N8 P - let frc = Resources.getFontRenderContext();/ ]3 ] y% t4 c& `3 \
- bounds = font.getStringBounds(str, frc);
J2 a+ O: @5 i5 u7 ]1 { - return Math.ceil(bounds.getWidth());. e2 @# e0 a: L l/ m0 G4 f' X
- }
7 F1 H, l0 a$ K; N$ b - $ z. R0 `0 @' V: p1 D
- da = (g) => {//底图绘制
. k+ I% Q6 B* M' A - g.setColor(Color.BLACK);
+ m/ H l8 {7 l+ s/ o( U1 K8 R4 ~6 K( @ - g.fillRect(0, 0, 400, 400);
. N( p# a+ @* F7 j8 h! ^ - }6 B: x% a: a' K) f5 E% _
- ; T9 ?; [2 ]$ S8 O S5 @0 h4 ~
- db = (g) => {//上层绘制
. j( i( n( g( M: b - g.setColor(Color.WHITE);+ U& _% U: I# j6 _ i# Z) _
- g.fillRect(0, 0, 400, 400);2 q0 d( Q# Y0 l- ~1 n' y
- g.setColor(Color.RED);
0 {: O9 N! x' ?4 G" y9 r" P* y; P - g.setFont(font0);' P: ?- d2 r" h: \
- let str = "晴纱是男娘";
# a$ ?0 G- A3 i% }6 X - let ww = 400;
. Y; v6 w6 |8 r' v3 Y; M) B - let w = getW(str, font0);* p- `$ G3 W* K! D9 n8 r5 A% _" @ X
- g.drawString(str, ww / 2 - w / 2, 200);
& x+ y# G1 j2 N! X' d6 c - }1 u8 p( z* d% p8 V
- / U- m# m q/ p9 I* ]* h
- const mat = new Matrices();. N% A# @3 K/ i
- mat.translate(0, 0.5, 0);
6 X: i; R8 l: Z1 G; f - / ^2 m, ^7 r3 [/ l
- function create(ctx, state, entity) {0 @, L* C* @% v2 @& T* s! k
- let info = {9 Q, [2 N* d) d
- ctx: ctx,
' ?) K2 p7 @/ @: g5 p - isTrain: false,
+ a; I7 ^! V2 T* I# n$ y - matrices: [mat],
U: I& E- H' F - texture: [400, 400],+ a1 c- D z! z
- model: {
/ q T* D. V2 k0 t - renderType: "light",
3 v+ S+ ?: ~ I' G5 D% Q - size: [1, 1],+ P( y0 k' l+ p& I8 Z* o3 n
- uvSize: [1, 1]
7 {# m8 w8 Y, a6 l8 f - }7 K; u! O% h, A
- }" r* j4 f2 j ~0 S2 }. |) G" y& p
- let f = new Face(info);
; ?' a# H }( X4 j' R - state.f = f;
" Y- {& h. i' n9 k5 X! x
5 j8 y( j, p& h" Q# s1 E1 `- let t = f.texture; F) e- X) ^% f9 f0 |. y
- let g = t.graphics;
8 w7 K* @$ n* Y7 [8 D3 ~9 m2 C- Y - state.running = true;$ P7 J+ S0 t1 I+ i, b
- let fps = 24;3 |$ I/ A+ h9 ^. Y/ s) J3 g
- da(g);//绘制底图
) \4 V9 `2 t! N1 s2 N& E - t.upload();/ S. S+ v! [% M" D8 ?; A" I. [0 M
- let k = 0;# j7 t( d' g& n; }/ v2 p
- let ti = Date.now();
r2 k* D# T8 ]% x4 a - let rt = 0;" J4 p, S% e! T4 F
- smooth = (k, v) => {// 平滑变化0 l' k0 ]: N" [; H. f
- if (v > k) return k;& I9 d; X2 v8 V" n1 Z
- if (k < 0) return 0;7 [, @1 k# X) t( _; V* ]$ {4 K
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
. n9 q' U0 R% v5 G/ ~8 B6 @- p - }. F; O" }$ h! C) V2 J2 I" w
- run = () => {// 新线程
2 l* n, _! ]& n& Y, R# D - let id = Thread.currentThread().getId();
( ]# h2 c6 O I8 M& h+ |- [- ?& N - print("Thread start:" + id);
1 S1 t, Y. T" p/ c- S/ U- } - while (state.running) {# D6 |# l; q% X8 N o; T
- try {
+ z) ?* x c \2 c - k += (Date.now() - ti) / 1000 * 0.2;) c$ i$ @4 S1 g- O& a3 Q6 b
- ti = Date.now();1 G& u4 X0 m0 U" d- D& x6 d: P
- if (k > 1.5) {
: ]9 p* A: X0 T7 e- o - k = 0;
% a0 [, {2 x( u: N9 P3 q0 s: f q( S - }
: T- B7 f1 x% c - setComp(g, 1);5 ]7 ?2 S2 [8 T9 y+ N: G6 x
- da(g);
$ }* y2 _8 a/ T: y+ }# W - let kk = smooth(1, k);//平滑切换透明度
$ K8 _! f1 H3 @1 f - setComp(g, kk);
( A" o: G/ p# O - db(g);
4 K. ?& o% A) g% j B5 R' Q - t.upload();
9 ]& i, v' I* w. A* M0 P - ctx.setDebugInfo("rt" ,Date.now() - ti);6 B" J$ W; G, G! l) h6 F
- ctx.setDebugInfo("k", k);
/ E1 W) z; {. [ - ctx.setDebugInfo("sm", kk);
1 u/ A: X b, I - rt = Date.now() - ti;
2 u* w+ X% j( D4 _( C4 a - Thread.sleep(ck(rt - 1000 / fps));7 @' T6 q- j% U$ h5 B* |! u
- ctx.setDebugInfo("error", 0)! K7 n" ~% f8 \" G
- } catch (e) {* E f7 ?) x' X1 J+ @3 A7 U1 t
- ctx.setDebugInfo("error", e);
# t3 N9 c+ v. l1 ^3 ?8 A; `1 G: H - }
( ^8 \$ Y: X& |3 X0 t, t - }
2 k" j6 n6 m9 L% a5 ?( Z( P! S - print("Thread end:" + id);
, h- ~: O2 ]- _9 G q+ F - }- Z5 l- a6 F6 r4 D$ v
- let th = new Thread(run, "qiehuan");
6 Z+ z6 F8 V% I9 H: z& @ b8 b$ k - th.start();
2 n5 ?9 M: E1 s3 T - }
+ }/ U5 b/ R* q' r0 w
) z- s- E2 I9 i5 e( J- F- L" A- function render(ctx, state, entity) {
j6 D i! T: U( g/ h s - state.f.tick();
: J3 x5 C7 Q3 V C, } j - }
' N# p- d' j/ f' F
: C% ]) v% d/ R' O& O8 f- function dispose(ctx, state, entity) {
6 f: H' F: Q8 E; `- l$ ]( E - print("Dispose");
+ _. \5 l3 G5 n/ E - state.running = false;/ V m8 y8 j5 `+ ]
- state.f.close();
3 D7 C0 S1 j7 s. s- r/ R( I - }
7 E6 j5 D; R K) i: Z - / Q' o+ t' p# Y* j+ _* i
- function setComp(g, value) {7 b$ h o* d: r4 l0 ?
- g.setComposite(AlphaComposite.SrcOver.derive(value));4 [) W$ }! c. t; u# V
- }
复制代码 # q( m: g+ ] Z/ Q: P
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。) }$ w, T/ E* j- T- u) X
. n8 x+ j" j9 O
1 ~( s8 |6 }1 k" k* A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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