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' g/ y0 `, W0 Y8 R9 q2 [# N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。
- y+ [0 q0 @: G4 F- importPackage (java.lang);
( K+ f/ {0 Q h+ f, o4 X - importPackage (java.awt);
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$ }! X3 ^4 \& T& g! U% z( `- include(Resources.id("mtrsteamloco:library/code/face.js"));8 s+ G, I0 h- G" A& \- |1 ~! J$ @
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- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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- function getW(str, font) {! x7 o6 J$ o3 u8 L* ]3 V, M
- let frc = Resources.getFontRenderContext();4 Z; R( w7 K8 h; d
- bounds = font.getStringBounds(str, frc);
6 v- ^( `/ ?# H- E# q8 z2 q - return Math.ceil(bounds.getWidth());
: H8 y* O" y$ F% F; ?- F+ o - }
5 i# W4 a( D( v2 w# z7 p9 t - ( ] @: U" c" s+ Z7 u' v
- da = (g) => {//底图绘制4 u; X$ G8 r9 Y$ L8 \
- g.setColor(Color.BLACK);
% @9 a6 u( |) q( i+ o - g.fillRect(0, 0, 400, 400);6 r X2 D* O- o7 c" ^! E. `
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) E# b3 o5 R5 P' P2 E( e- db = (g) => {//上层绘制! r. L @8 S1 n% S8 c
- g.setColor(Color.WHITE);. w% G% R/ N2 e; X6 w, [, O* m3 k
- g.fillRect(0, 0, 400, 400);% c/ W' ?% l0 s& X6 Z1 ~
- g.setColor(Color.RED);
8 z3 F" z1 f# Q" V( A - g.setFont(font0); j. \- v. c. R) B: o
- let str = "晴纱是男娘";
6 z! k D* j+ s( X9 f: n+ Y - let ww = 400;! \; \) f( W/ C
- let w = getW(str, font0);
, \) L, Z. n# h1 Z4 ] - g.drawString(str, ww / 2 - w / 2, 200);
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- const mat = new Matrices();' P1 z4 y8 @; K) b2 r3 u/ |
- mat.translate(0, 0.5, 0);& c1 \( |, |1 N& k3 z
- t, W8 ~* b+ [; i* h: B7 E- function create(ctx, state, entity) {9 t. d" e0 F( @
- let info = {
3 D5 @( s3 l5 K3 t" X0 m9 E - ctx: ctx,: j6 p+ J7 k* \3 u
- isTrain: false,
6 x& G# } O$ m# U$ E8 u# I - matrices: [mat],8 @3 @! ^& C* A7 h" B
- texture: [400, 400],
8 V! y% \" e4 [) {) x6 N - model: {
, d# Z/ \8 ^- @' L. B0 \ - renderType: "light",
9 ?% o3 L. P2 `1 i: | - size: [1, 1],
) p5 H. _4 h" a3 u* G, v/ @9 i - uvSize: [1, 1]
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- }! \/ |) M) j: o
- let f = new Face(info);
: \/ U7 l% a* F0 d" ^1 o2 L% n - state.f = f;" V) \ ]* Y/ E$ R x
- 0 U# u) O+ g, F% `6 h
- let t = f.texture;
8 O/ X7 V- K9 ?$ P! k% U - let g = t.graphics;5 Q6 c1 ]" K$ r3 A9 [
- state.running = true;
$ O5 S$ r1 J+ f R - let fps = 24;" A( G- H% V' ]( S* c" B/ n
- da(g);//绘制底图
' V+ y7 {2 I7 R& g( _ - t.upload();; b Q: d3 z. j+ _6 N
- let k = 0;# y" b8 q& T |, g
- let ti = Date.now();
; G8 ~4 J# Q' D' @8 _# z. _, l* Z - let rt = 0;" Y. Z( h& ?! y3 I4 ^
- smooth = (k, v) => {// 平滑变化* _/ b5 B% a n; Q4 O; p4 ^
- if (v > k) return k;2 a2 L) O. z9 F0 a: U1 e" t
- if (k < 0) return 0;
K6 X0 |7 _8 V7 ^+ d - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
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- run = () => {// 新线程 X& K. ?5 L* `7 n2 s9 t
- let id = Thread.currentThread().getId();+ b3 ]! y7 l& p6 ?! B8 j
- print("Thread start:" + id);
6 U8 {& n; A; r4 D# m0 @. Y5 I - while (state.running) {1 I2 _5 ^8 c2 D! _; f3 d1 P
- try {7 b; r$ { E" S8 F( H! [! ^
- k += (Date.now() - ti) / 1000 * 0.2;* ^! [8 H/ n* G0 f
- ti = Date.now();/ Y( h/ P$ A. E7 m9 I. s( c
- if (k > 1.5) {
4 @3 P9 F# M; \7 E; i" S$ j& m( v - k = 0;
+ u7 r7 a, Y/ n$ Y) ^! e6 @ - }
. j9 B- T* c8 s5 s; W4 ]6 X - setComp(g, 1);
4 g0 n, c8 d1 c5 A0 P - da(g);- p6 g- V; b, d2 d
- let kk = smooth(1, k);//平滑切换透明度
1 ^- U! b1 ? J, \ - setComp(g, kk);
7 L% h7 I1 L1 n$ z2 I) K) f - db(g);
) U+ a% o& p" W* x - t.upload();
Q( Q$ ?9 c: X- }3 o1 F% D - ctx.setDebugInfo("rt" ,Date.now() - ti);) A. } g- N1 f, H9 e# i, I/ ~
- ctx.setDebugInfo("k", k);% C6 x3 J' ^% r" ?6 f6 b, z2 ~
- ctx.setDebugInfo("sm", kk);8 D0 t. o( ?$ l3 V5 |5 |
- rt = Date.now() - ti;
6 n# R1 b9 y1 ?8 M - Thread.sleep(ck(rt - 1000 / fps));
" k b1 P7 j j; Y. m K0 |8 U - ctx.setDebugInfo("error", 0)
- x+ R. r7 U. L- W9 ^ - } catch (e) {# {$ i8 m0 ?! ?1 P% ^
- ctx.setDebugInfo("error", e);
5 m; `( K; c M1 l6 G - }
) O' q2 W M- G; |& M2 B - }
( _+ i. i4 `9 G) f: ] - print("Thread end:" + id);
1 T$ N2 O3 F7 H0 O( d - }/ J' j! @ q f' J( T/ N
- let th = new Thread(run, "qiehuan");
4 b* ]2 U& ]% [, t; \ w! ~' g1 V4 T - th.start();
8 a; B& d/ U1 ? - }
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- function render(ctx, state, entity) {
/ n- S) V' v5 J( }2 q - state.f.tick();0 `7 o9 j% |( {+ ]. u
- }
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- function dispose(ctx, state, entity) {! _: D' m: a7 v/ T
- print("Dispose");
+ m6 K. P" M0 K: F - state.running = false;
: o j5 x1 ~+ H8 H- h, O - state.f.close();
, y3 H8 p0 V/ G* Y8 e/ X$ \$ L G - }
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! O. c" J3 J7 x* i2 c7 D# F- function setComp(g, value) {# ] I- m( i: O# D7 @+ I
- g.setComposite(AlphaComposite.SrcOver.derive(value));; S, @8 |& O3 @# x8 C+ s
- }
复制代码
1 C* q8 w) d. `6 a, j7 B7 b7 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。* x3 S$ }; l% Y5 o7 Z
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1 Y- V' G# p/ k/ |& ?. ^ [" M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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