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% Y2 d5 o7 {( W( F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。1 V! ~0 D( p1 b6 x, A$ b$ n$ }
- importPackage (java.lang);( U. X- M! S( |* C
- importPackage (java.awt);0 B4 C" S5 O% F+ E
- ) S d2 R" p6 E; ]
- include(Resources.id("mtrsteamloco:library/code/face.js"));( V0 r2 `8 [- Y/ S, i+ ]. Q( V" N0 [
- , n: m/ M1 v9 |7 z1 m+ Y6 T
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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7 Z0 C2 u+ r9 p- function getW(str, font) {; Z4 e' Z; t* S
- let frc = Resources.getFontRenderContext();7 Y$ V9 e/ V. \+ v2 u. e9 U! l- k J2 Y
- bounds = font.getStringBounds(str, frc); [7 U5 C4 X9 N) k6 S7 A g
- return Math.ceil(bounds.getWidth());
9 R/ u, i' e+ M" C - }
1 p0 l# n2 l3 _! C7 i
, T9 r: _( D! U* m- da = (g) => {//底图绘制8 n0 D7 ?! T. s2 {3 x2 g
- g.setColor(Color.BLACK);; [' O' ~& S0 S6 Y- i& U
- g.fillRect(0, 0, 400, 400);
3 G w B7 o- u1 R5 u - }
! Y! j7 n" T' W - 8 l+ Y5 V( E6 K6 ~
- db = (g) => {//上层绘制" x+ X# n6 P/ R7 Z
- g.setColor(Color.WHITE);
9 ]3 I4 T9 @5 Q1 X0 d+ @$ j, @ - g.fillRect(0, 0, 400, 400);! ~+ s, B9 ~5 c& C) a% A
- g.setColor(Color.RED);
4 W$ M: u! }9 f9 { - g.setFont(font0);. z: I# ~' l% a9 f4 |0 s1 G
- let str = "晴纱是男娘";
# H; P9 d A* l7 ~. U - let ww = 400;
" \4 F2 n8 E. }3 v* | - let w = getW(str, font0);5 O$ s5 S& ?" V9 `! ~) y' l
- g.drawString(str, ww / 2 - w / 2, 200);8 [" ^' ^* m# L6 s
- }! T+ r) ]8 m3 {! v- i
0 g5 C) D& @- m( x3 o" S- const mat = new Matrices();7 A8 @& e7 X8 Z* [9 A0 q
- mat.translate(0, 0.5, 0);
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- function create(ctx, state, entity) {/ ]4 ]% X! A; d' w
- let info = {
" i0 G. j$ w& A: l - ctx: ctx,
" s6 M( l. |, X' C1 h - isTrain: false,
6 Y# T+ {2 b# f# Q: \# |2 X7 | a - matrices: [mat],
8 F+ u. o4 R% z5 v1 G! u. x - texture: [400, 400],
! P0 q6 V# J8 P- x. |& | - model: {% A* s0 K% X( Z. |# U
- renderType: "light",5 e8 L/ Q8 [/ B5 u- L3 ?4 v
- size: [1, 1],, z6 w/ X8 N: k% z
- uvSize: [1, 1]
0 E3 B3 V& ?, R3 T/ X* J$ X6 _1 h - }
* l' E! G( {+ h7 Y5 ? - }' }5 c4 _+ G( M0 u9 K% Y) q# l- a
- let f = new Face(info);
3 Z0 z" w- p; M' d - state.f = f;
& n/ e1 l( W6 F; ^5 L$ q. J9 Q7 d
: i9 N" j; N& m- let t = f.texture;9 M0 q, m0 v5 c8 E
- let g = t.graphics;
1 q4 n9 x. i% i* A: I5 I% ?$ u - state.running = true;7 Z+ _( v. d8 h4 q! r
- let fps = 24; H9 `% W/ S0 `3 S- `3 U b% g
- da(g);//绘制底图- k) k- A* E- E, O K
- t.upload();% o$ E3 z( q" u- B. [8 o0 i' y
- let k = 0;/ o/ j/ c2 H ^0 K ]
- let ti = Date.now();
2 C$ G4 Y3 \( }& ^3 ^. A - let rt = 0;
/ S+ K! {( M9 j/ K7 D& a - smooth = (k, v) => {// 平滑变化
# @* Q' B5 w5 \& q% s - if (v > k) return k;& j" x& n4 J7 x" u& ]
- if (k < 0) return 0;
# j7 E1 K5 [% ~' Q3 k - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
t! E9 g6 @# U6 O - }) K4 t9 W$ J8 U3 R9 x* R
- run = () => {// 新线程% E% G' J% W+ X* y
- let id = Thread.currentThread().getId();
* k$ T( R: l+ A$ A; n) y- G; |1 } - print("Thread start:" + id);
' M# A3 H3 x; o; X9 t - while (state.running) {
$ c' `7 P1 ^# p2 w" r$ a9 [ - try {
3 T" x& S" d) \3 ?& g - k += (Date.now() - ti) / 1000 * 0.2;
, w' l1 v; u8 E( O) s& d - ti = Date.now();1 R, i$ F) N/ N. A! R0 }% u! M7 x
- if (k > 1.5) {& k! s* g1 e% {
- k = 0;) H- K; @; Q% N6 c
- }. k+ P# f7 ~' e8 l2 C- P1 ?
- setComp(g, 1);, r' I5 S4 D5 T! Q! `* `# u: A
- da(g);4 |/ [9 d, E r
- let kk = smooth(1, k);//平滑切换透明度% W: J$ T0 f0 b" ~) }
- setComp(g, kk);! u* j3 ]6 w0 v& t
- db(g);6 }( D2 K2 b1 @$ T# T4 D
- t.upload();
2 ?' Z9 W2 J4 p4 \* h$ H6 _0 Z - ctx.setDebugInfo("rt" ,Date.now() - ti); \: R) f) d5 E' s
- ctx.setDebugInfo("k", k);3 K' e7 b. q# X
- ctx.setDebugInfo("sm", kk);
3 @. }. u0 L( V - rt = Date.now() - ti;
, B( O! ]7 n- K+ l( G - Thread.sleep(ck(rt - 1000 / fps));) u0 k! {+ J. c8 l# S
- ctx.setDebugInfo("error", 0)! B$ O/ z; {/ P( L6 e
- } catch (e) {5 ^3 e! p# Q* o. [" ^2 i: ^
- ctx.setDebugInfo("error", e);8 I1 _) c1 k1 Y8 R3 ^3 V
- }+ X. s. d. F% J% l4 c0 P; x+ V
- }+ N) d" R8 ?( r9 P; r/ U# _6 G
- print("Thread end:" + id);
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- let th = new Thread(run, "qiehuan");1 ]7 u3 X9 u @+ J% J
- th.start();
2 Y8 J, Z+ t, a; N4 u/ D7 w - }2 x0 d+ q" s, Q6 ]5 i
- 7 J9 T v* a1 s' X
- function render(ctx, state, entity) {" C8 T- P- t( S+ w7 Q- |
- state.f.tick();4 |0 {# H4 V! c. { A# E
- }
" ?5 S2 [- k* N9 k8 C4 M3 C/ z
) T6 M2 O7 K" f% G! r( M& M- function dispose(ctx, state, entity) {; @8 K' H0 `& O& E: P
- print("Dispose");
* ]0 ^8 N3 |& O, l0 A - state.running = false;
9 e5 @( r+ x; O - state.f.close();# q5 \; H- L9 \ J+ k5 ` {3 o8 w
- }
# ~7 z4 D$ D2 y% g( c$ w# ~
2 R/ `; R, i# F. T2 x- function setComp(g, value) {
% e$ m3 o4 K8 X! L: v - g.setComposite(AlphaComposite.SrcOver.derive(value));
9 w" v; ]2 [2 k. V3 }; q - }
复制代码 . X/ I& u9 _' D3 k
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。# ]4 J& I: H2 ~0 O8 i+ y3 K
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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) e% Z- t3 `+ ~* v5 S- i+ |
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