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! @3 V. j1 c1 R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。" _4 i0 R4 |7 |/ ], l3 b1 a( H- x
- importPackage (java.lang);
7 z$ Q4 [- q' ]; O1 }# f- l - importPackage (java.awt);
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6 \/ P) R! ^- X% {) R- include(Resources.id("mtrsteamloco:library/code/face.js"));
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6 |8 k4 L, P5 @0 Y: q7 Y9 H- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);% @% ?" G* | o# m
3 [/ W: p3 K% R4 R! a- function getW(str, font) {1 l n' k: C; q: U& J$ F' W3 N
- let frc = Resources.getFontRenderContext();
% Y& C3 Q) G: T" x - bounds = font.getStringBounds(str, frc);7 B. L) `! d# h$ w. l* U
- return Math.ceil(bounds.getWidth());+ t( v( s; u2 Z$ A* t* {+ W% f
- }
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# T7 g, u; D# s2 r- da = (g) => {//底图绘制1 S) H! G" P8 K5 u+ O) C/ |
- g.setColor(Color.BLACK);& ]# T0 d) m9 w* E5 \# `
- g.fillRect(0, 0, 400, 400);
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- 2 P) n1 U; j. _1 j; G, L
- db = (g) => {//上层绘制8 u+ `$ x9 Z M7 C* H( \2 Q
- g.setColor(Color.WHITE);
4 I) ~" }2 l, t1 Z. m3 Q7 q - g.fillRect(0, 0, 400, 400);
' X+ g" w) @3 [+ h- L - g.setColor(Color.RED);
$ c' W5 }+ k( `$ O$ M" A4 k4 n5 T* Y - g.setFont(font0);. m# r7 S. `7 O! o# s! i
- let str = "晴纱是男娘";
$ F% O) P" Z* y5 U7 G7 Q - let ww = 400;
- A9 [# |, j( ^# K2 ~- Q+ o: z! G - let w = getW(str, font0);* F2 k' Z! G/ M4 e* r9 R7 B6 _
- g.drawString(str, ww / 2 - w / 2, 200);
( }* E+ ^1 a2 s& C7 l( A - }
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- const mat = new Matrices();+ M$ w7 @ ^4 V( |3 T
- mat.translate(0, 0.5, 0);4 v; C1 S: t) J! O% r# M
- ' P- B, [0 }$ z4 d9 A& J& m! Q
- function create(ctx, state, entity) {4 ]; }$ _' Y0 E# F1 j* e" A, R% e
- let info = {
& g7 F1 h1 z6 v4 c" e - ctx: ctx,% b" Z" v, k6 D2 h# A* N. P
- isTrain: false,; C! F$ j4 B8 H8 \" g5 c7 P! m
- matrices: [mat],
+ u6 ~- z$ m0 H1 N1 i - texture: [400, 400],
: c6 K% b+ V+ G) U% o" o( M - model: {
, D- ^" \: ^: e2 j% E/ O - renderType: "light",
- w: B2 D, \+ N - size: [1, 1],2 x5 _ v- b& _$ l. i
- uvSize: [1, 1]8 N! |* {' J, u' ^: E V7 y
- }
0 y1 s4 O' V9 F - }
. j& \9 y0 L8 S1 S+ e) @. i1 y' F# \ - let f = new Face(info);
. t [; D7 K4 ?8 H - state.f = f;2 i+ B: e1 T/ K+ c
- 7 S# z# a2 J0 H9 |6 m5 n) J' [! [
- let t = f.texture;7 h5 l% w* Z5 h" ?
- let g = t.graphics;% o2 o8 ]% u' N' I5 c3 c
- state.running = true;! O- Z" a4 c: P1 R
- let fps = 24;. I4 x; ]2 ]0 w' Z
- da(g);//绘制底图
8 z4 z+ }! N$ L2 T2 v) K. E - t.upload();2 R0 G: {+ H8 `- n- b5 R+ F
- let k = 0;
& ~& @+ Z1 [: i$ f" @: O - let ti = Date.now();
8 \& O8 {9 O1 N& A" y - let rt = 0;$ h" H: D: E/ I) ]
- smooth = (k, v) => {// 平滑变化
! P* d; `0 ]2 ]1 E7 g1 _' \ - if (v > k) return k;
" p( x( ^9 b& s v: U( ~; R2 L! A - if (k < 0) return 0;/ [) d; Q& F* V- k# G q2 K" ]
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
- j/ @. B6 c8 M8 T& G - }
- M% y6 o0 o# C& ~8 W% ~- | - run = () => {// 新线程9 `! D' }, A1 h9 w
- let id = Thread.currentThread().getId();- w4 F: V- n: k( ]6 @
- print("Thread start:" + id);
: Z1 I3 ~. k5 E) y- e0 ? - while (state.running) {
. L5 ~4 Z9 ]7 l' \3 t$ r - try {! X( f( |2 g2 I$ Z- ~1 u$ Z: E8 M
- k += (Date.now() - ti) / 1000 * 0.2;
9 L2 u0 Z; b2 a1 p - ti = Date.now();, V l1 X. i& _/ g4 @
- if (k > 1.5) { m* o5 M1 q4 U5 r* u
- k = 0;
8 B4 d0 [9 ?" S( e. y3 n0 ^9 T - }
) b7 \7 R( U& F7 g7 s1 W' Y - setComp(g, 1);
0 l9 d$ A! U1 U* l; \2 f9 W' t - da(g);
+ L* o8 X/ P, j1 J. z3 E - let kk = smooth(1, k);//平滑切换透明度
q. A: y* N0 w - setComp(g, kk);
5 f9 M" A# \& q' T+ d - db(g);
. k2 k4 R3 ?7 i2 Q - t.upload();- ?5 _% p# Q( X7 g$ I) ]
- ctx.setDebugInfo("rt" ,Date.now() - ti);( F& o9 E6 }/ F% E
- ctx.setDebugInfo("k", k);3 B, I7 o+ {+ E
- ctx.setDebugInfo("sm", kk);
: m$ h8 B3 b4 Y6 e! P - rt = Date.now() - ti;( T! i- H E k+ X* X* l2 i
- Thread.sleep(ck(rt - 1000 / fps));0 W/ _3 [$ V5 o: b, X0 }
- ctx.setDebugInfo("error", 0)8 F9 b% L# j, _
- } catch (e) {
+ R# V6 H9 Q7 ?3 ]* l4 m3 T! A - ctx.setDebugInfo("error", e);
* i- D: N. {. k! C# [ - }
H g, v5 a6 L$ j9 v( m - }
+ C# C* M7 D' N& b& v7 W9 C - print("Thread end:" + id);7 j. \! s4 u1 V5 Q! Z
- }
0 {3 \% E0 U2 @/ v - let th = new Thread(run, "qiehuan");6 e2 b4 j7 L- p3 l3 }/ m" t
- th.start();
7 O6 ~) A) f2 ]/ b1 V* O7 W, j% S" S* | - }" e8 L- v) w7 q' z, }
- # s7 }2 @* h9 X4 o& H& ^% j5 y$ Q
- function render(ctx, state, entity) {
4 R: S$ K% P; _" x3 Z - state.f.tick();0 j3 h3 l; ?8 M, u/ d2 l/ i
- }4 P) G9 l- ^3 Q# c Q) }! v6 }
- 5 Y0 D! j% @$ E: C( \- _% |
- function dispose(ctx, state, entity) {
% ?& g- Y- ~6 { - print("Dispose");
+ x+ o0 L9 k9 p F) e6 ? - state.running = false;
! B* D3 J& A0 }' D" |) v' I" v4 T+ c - state.f.close();
3 F, o; q; _% U0 I - }
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- function setComp(g, value) {
7 D$ y/ B, I8 H! b" n" b; f: Y9 Y - g.setComposite(AlphaComposite.SrcOver.derive(value));+ W3 k7 o) t( n4 e- b7 x" j6 i
- }
复制代码
/ e0 g& S8 I6 [/ b2 U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。
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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)
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