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$ v1 o( i' t1 ~- V0 o* u5 d" 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。8 n- Y, J1 U/ H! d: |6 l0 o
- importPackage (java.lang);$ u3 `& V1 N. \( p+ [4 ^8 z0 E) |& u8 o
- importPackage (java.awt);
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4 [: m3 w2 V1 f5 K' L8 S0 s4 {4 O- include(Resources.id("mtrsteamloco:library/code/face.js"));
+ `0 y, G; A, q& [3 `2 ? - 2 `, J% W* I5 a4 {
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);# h# i# R" f; d* H" I) Y
" C# H/ `8 w4 S# Y8 l- function getW(str, font) {
5 O1 m, R9 A2 e3 v5 R - let frc = Resources.getFontRenderContext();0 z, i0 u' \" q
- bounds = font.getStringBounds(str, frc);9 z9 L( F$ t8 d/ c# b5 R B
- return Math.ceil(bounds.getWidth());
! ?- U- t: a5 I" Y) r" t& P/ ? - }
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' r2 a, T1 [# c0 h# G# `- da = (g) => {//底图绘制4 q1 }1 L% e/ b: n# _; e7 h T
- g.setColor(Color.BLACK);
g. l% x: u0 d* ?0 U - g.fillRect(0, 0, 400, 400);- F& n7 f2 L; b" I: j
- }8 h3 C, X7 k' U1 Z
- 7 X( o }, S, Z" t- o
- db = (g) => {//上层绘制
; P6 [) a# [7 G* B& Q1 S$ y - g.setColor(Color.WHITE);
7 D. P0 f7 ]" u: h0 Z- G: x5 V7 u - g.fillRect(0, 0, 400, 400);/ A3 G H! }1 o* D& @: G
- g.setColor(Color.RED);8 i7 F7 ]* I* R3 n, h5 L
- g.setFont(font0);# i$ c6 w0 t8 ~$ h! k& Y
- let str = "晴纱是男娘";
- N6 j0 J! X% G7 {) |8 c( j) }" k - let ww = 400;
/ [! H* G% K! R% I! S8 o - let w = getW(str, font0);
- J2 p6 P8 C! }& i; ]4 C$ S0 x5 [$ i - g.drawString(str, ww / 2 - w / 2, 200);
+ C! \- m' o0 e3 X- z - }
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6 J; Z/ U }' y9 f' T- const mat = new Matrices();
3 I, G/ K$ I" N+ ^3 m - mat.translate(0, 0.5, 0);$ S2 I+ g% Z& i/ m3 m9 z" `( g
5 D/ s4 e. p8 W# F+ ^$ R- function create(ctx, state, entity) {8 f" F; t# c W
- let info = {& i/ H. n# g- }3 A+ l# B
- ctx: ctx,
5 y5 g0 l8 S$ d9 }- u- R: }1 z - isTrain: false,
1 G! W7 g8 w" _- w {6 @2 I4 [6 \ - matrices: [mat],
. g, L1 V2 E1 Z+ H - texture: [400, 400],
# t( ^# [% c+ ^! v9 b9 _ - model: {$ G y4 ?! _5 @: H
- renderType: "light",* H4 F0 k! p" |
- size: [1, 1],. c* W( L8 l4 x3 R
- uvSize: [1, 1]
7 G& t0 Z' b6 v6 _8 [2 _ - }
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- let f = new Face(info);# ?& C2 }3 U% {0 p4 ^1 c9 L
- state.f = f;1 u) @& d/ ]% y9 G8 h2 v
- " ]1 {. y, y: x& ?
- let t = f.texture;" {! ^3 I. k$ S
- let g = t.graphics;
; g: v4 E( H \: Z$ A! n1 @6 s8 r8 ] - state.running = true;
$ r' D |; T3 Q - let fps = 24;# A5 A! z' ~, ?( C( t- j4 K. j
- da(g);//绘制底图/ ?/ e8 M# c+ E3 i$ K
- t.upload();
& M( n$ P/ }" G0 t E - let k = 0;5 f8 K' w7 V) n. q# E
- let ti = Date.now();. m1 N: l/ `4 L# K2 M
- let rt = 0;) Y6 Y7 V8 V& k/ a( A
- smooth = (k, v) => {// 平滑变化
" N ~4 D( \9 @5 c) U - if (v > k) return k;
6 x9 C# u3 Z) k6 j Y( o - if (k < 0) return 0;
+ S2 c8 c9 r; ^4 h8 [ - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;% y: B6 W+ m* b4 A8 i7 h) t
- }( x8 e. l& c+ w+ V& i6 w7 b! n$ W
- run = () => {// 新线程
3 w+ N8 h2 ~3 E1 Y - let id = Thread.currentThread().getId();
# ~. x0 Y* _2 L; i9 j - print("Thread start:" + id);
) u! U g9 b( ]1 B - while (state.running) {
4 J h2 E! ^6 I* X8 W* U* _ - try {
" d; O! z, |0 [$ w, O, X& n - k += (Date.now() - ti) / 1000 * 0.2;8 k1 T; l9 ?2 Y
- ti = Date.now();
# C8 o0 F. J. U" [) g2 Q/ m - if (k > 1.5) {
& h% r1 V" _% K2 t+ E - k = 0;" T9 u. d" N7 Q" `- G
- }) J) g; d& S3 ]$ `
- setComp(g, 1);
: H: b2 ?5 v" ]' J% m - da(g);
9 s' _/ o ]0 V" { - let kk = smooth(1, k);//平滑切换透明度/ T' x* f4 k7 H$ C, v3 i# N% M& z
- setComp(g, kk);6 g2 j9 h5 H& }. t/ Z. b d
- db(g);' @* j. ]4 y. ?8 X1 u
- t.upload();# L9 G4 ]8 D4 B) D1 f4 Y
- ctx.setDebugInfo("rt" ,Date.now() - ti);
& _( {1 c- q) `, F/ f - ctx.setDebugInfo("k", k);& I( a1 }& F3 w8 R0 @% V: `
- ctx.setDebugInfo("sm", kk);0 k4 Q* \0 z! A$ C! j6 K X
- rt = Date.now() - ti;
$ r+ ]! ~* ^; j' B - Thread.sleep(ck(rt - 1000 / fps));2 a' \* R3 Y. `* i) _
- ctx.setDebugInfo("error", 0)+ e, Z% Z: o; {- L7 D8 X Y5 A" q
- } catch (e) {
) B, v6 s7 ?; {# `9 Q a* C - ctx.setDebugInfo("error", e);
- w8 ]5 z' i- n! e - }% T( r' ~5 M. U: W
- }2 J# M: X/ ~. s4 x
- print("Thread end:" + id);$ [% l V$ u0 p: p+ ?( D% E/ p
- }
7 v3 t8 ]- g& z7 x; e5 V - let th = new Thread(run, "qiehuan");" k; t0 @" r; v+ D# y, G
- th.start();
8 h7 F! k( z& \$ G - }
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- function render(ctx, state, entity) {6 t8 O0 s- p0 {/ i, F0 b) D3 L# m8 Q
- state.f.tick();
# y: t9 y8 A$ y - }, t: A! `( e4 A/ T! }7 J0 r' {$ V
8 S9 V4 W! H% x% b y& m }! C- function dispose(ctx, state, entity) {
% B! ?0 N7 M; Y% I9 x- b) L1 Y - print("Dispose");0 a) y) }# b1 T) X* M, c" u: C' L$ L
- state.running = false;# c Q. Y" Q8 i. V6 Q1 C5 k6 X( {. t! v
- state.f.close();7 ]; l8 ~1 R: Z! q* O% X
- }
6 p" a. y! D# d6 M. r! X4 |. V
9 A$ ~2 o8 A% A- function setComp(g, value) {& g7 d: C) O; A; I. y
- g.setComposite(AlphaComposite.SrcOver.derive(value));, F5 L. K( W$ |2 l/ G
- }
复制代码
9 ~# m# {+ a% i' B0 i- i5 @8 f$ A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。0 n4 Y& T' g) q9 ^+ p
* d x8 @+ E$ w( d9 [' K5 Y7 ^9 W
& [, a& B0 Q4 F/ I+ G" P& g2 r' x; P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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