|
|
还没有账号?赶快去注册吧!
您需要 登录 才可以下载或查看,没有账号?立即注册
×
3 F$ }! b: ~* R5 Q: J5 z4 Y. g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。
: w7 T' ^; X1 ]( y8 [% @; J0 |" `- importPackage (java.lang);
/ ~4 @ I- X& N# j" B" D/ v - importPackage (java.awt);
9 s: s ]& i" I7 @9 x P% A0 k% x - 8 Z, [+ c8 e. L& }* W6 I5 _# b! E
- include(Resources.id("mtrsteamloco:library/code/face.js"));$ C/ C0 Y$ H4 I. U, Q3 Y
- + N4 p, g6 y6 ^# Q
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);8 b0 p* ~! ^+ [. J* w# P: y/ l8 l7 o
. K7 q3 v8 u. c& N1 G" O- function getW(str, font) {+ E3 m g4 W, f! W5 I( `
- let frc = Resources.getFontRenderContext();% }2 m' M3 Z1 B5 ]" u2 L
- bounds = font.getStringBounds(str, frc);. h& J9 V6 T8 E1 D" |/ r* H3 U
- return Math.ceil(bounds.getWidth());
& J/ j0 q' C8 T' V - }6 p: J9 A9 U! L( X1 L5 x; V: V6 x
" o: x# _( t1 _. L* d% v- Z/ j- da = (g) => {//底图绘制
: s/ |1 }( s4 m5 Z! {6 s - g.setColor(Color.BLACK);! \% m0 Y" ~8 Z" _$ R! |
- g.fillRect(0, 0, 400, 400);
: r1 ?8 w0 G, z6 g; d+ ` - }- v- q4 W2 m: n: a: S) [6 v
- * P; w1 G# j5 q& L8 F; m
- db = (g) => {//上层绘制
: ~& i/ [- Z- s. t - g.setColor(Color.WHITE);4 {' H) n1 w+ U7 p" Z, T3 ?, G0 f
- g.fillRect(0, 0, 400, 400);
5 o6 t( d) [5 ]. T - g.setColor(Color.RED);
5 G, L$ T* X# n: c, A - g.setFont(font0);
* ], r! Y {/ a" P - let str = "晴纱是男娘";
: s1 a, q* ^9 A9 i0 V - let ww = 400;! }2 H: m' Z# n# Q
- let w = getW(str, font0);: N0 K2 g+ E" q! h5 n8 z( M$ Q
- g.drawString(str, ww / 2 - w / 2, 200);$ t1 N' W1 S# j! d) `! V$ s7 z0 e4 W p
- }* g% f+ W! W* K1 B3 V
6 v+ _! B) {+ A8 }; }- const mat = new Matrices();$ N6 {- m( v/ [* V! i
- mat.translate(0, 0.5, 0);! k9 ]0 K* k4 O1 J2 O3 F
8 C/ h+ }& Z/ P" o4 M; F3 Z6 i; Z- function create(ctx, state, entity) {
8 U: L7 ?# ]2 X+ G! t) i8 [" ` - let info = {0 p0 Y# f# \+ R1 z' S6 W
- ctx: ctx,
: a) {: h. k2 z# I: Q. Y - isTrain: false,
9 @# j/ A) t7 P9 q: W2 b4 H4 q1 n - matrices: [mat],
9 V3 v3 @4 ?$ M C/ ^5 g/ B - texture: [400, 400],) q. N0 a( w$ u- h! L9 p2 S
- model: {
$ o F4 K) p( d: G, h& ?$ x1 m - renderType: "light",7 Y) {& w; S* e5 Y; A. Q9 W& ], m
- size: [1, 1],
M6 m, q& z5 Z0 ` - uvSize: [1, 1]
2 k* J7 ?4 K0 s' P6 d - }
! N$ g0 D+ t* L% h/ j; ]& a - }
+ G9 T$ B! P- a( R `( \ - let f = new Face(info);/ h" {8 O% H- s* g) m$ e& }
- state.f = f;
" U: g4 C' } V2 ]$ J! Q/ [
0 x* b" b: V& f& `0 Y$ T: }- let t = f.texture;
1 |$ C# R; C$ o; X8 N# a( o - let g = t.graphics;8 o! a* x$ F5 Q0 D' ]
- state.running = true;
, p4 |1 _: O9 j - let fps = 24;* [9 l" S+ c% y
- da(g);//绘制底图- ~3 G, C* y0 l3 f0 I: G
- t.upload();
& c- Z: {& ^) R2 ?" r - let k = 0;* @6 r" e1 p" Z' {9 U
- let ti = Date.now();+ m! ~0 }: `8 _0 W, v$ ~: v
- let rt = 0;7 E9 }! N" Q5 \- p# ]- {" n
- smooth = (k, v) => {// 平滑变化
' s/ Z) `+ c+ N$ m2 L) f- l9 p - if (v > k) return k;
* r; f* h& a: J* | - if (k < 0) return 0;0 s5 L9 N! U/ Z( U9 v# ?1 O/ B
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
$ C; g1 a! I F- A1 `, {7 d, x - }; C0 N% w7 U# i# E
- run = () => {// 新线程- {, x1 n3 g$ \, V
- let id = Thread.currentThread().getId();, J1 }. D7 ?) ~% k! a! C9 f2 H
- print("Thread start:" + id);
: T6 V F. E( J. J3 _ - while (state.running) {! L+ @7 u* R" Q& ?& F2 G) u* T5 o3 l
- try {; ?5 n+ j2 g- W3 {0 V! p
- k += (Date.now() - ti) / 1000 * 0.2;4 b, [# V+ {7 E/ d1 T
- ti = Date.now();
4 t/ o+ [- l; Z: ~7 P - if (k > 1.5) {
1 ^' y- `" ~6 q% m) P7 Y) J/ I& X3 {0 H - k = 0;' q/ [) M1 |! A0 ?# j
- }
/ _2 l) Q7 ?- l0 u [7 r8 t9 Z* y - setComp(g, 1);
% X3 K: I8 D/ ~1 R( J: q - da(g);; p7 ~+ c; d- S
- let kk = smooth(1, k);//平滑切换透明度1 [9 t9 e( @9 h1 l
- setComp(g, kk);5 \& X* h" J* s+ L
- db(g);. q$ P9 S2 a) D3 q+ [3 q
- t.upload();
7 J7 Z9 } ~+ M+ g4 F- |5 j( Q5 f% S - ctx.setDebugInfo("rt" ,Date.now() - ti);+ S5 Z6 Y* B. B& F# [
- ctx.setDebugInfo("k", k);- X5 Q N2 _( F1 ]! \9 Q; T
- ctx.setDebugInfo("sm", kk);
, L% z. c0 K! N: s4 d - rt = Date.now() - ti;* Y' t" D K" I
- Thread.sleep(ck(rt - 1000 / fps));
1 m7 u" h4 Z @/ | - ctx.setDebugInfo("error", 0)$ y/ |/ `3 u: z4 I+ W
- } catch (e) { d7 w- P1 U1 q( Q& ~
- ctx.setDebugInfo("error", e);
) R. m8 S x8 g) c J8 K% c& O, {# d - }9 r" N0 c) n* F8 c+ D
- }
/ j6 z; Y3 S4 W8 R) r5 ^$ J6 E - print("Thread end:" + id);: |; m4 ?4 F3 _3 b' T% C( @4 q
- }. ?1 s" ^. y+ J0 Y8 U, ~
- let th = new Thread(run, "qiehuan");9 U: U4 c; z: \( {
- th.start();
: Z. T( ?) ^* F/ E$ z - }& h9 Z/ C" L7 q! I* ^
" y# Q; \! `4 p3 ]) O p' S- function render(ctx, state, entity) {
& j0 n, R4 S( `; Y3 @0 }7 ^8 m9 | - state.f.tick();
! L( s" E& Q5 k6 D* G8 B1 D - }
8 T: R$ Y M# d8 I( F9 e3 h
. m) J: E8 X2 y* U- function dispose(ctx, state, entity) {
0 B2 z8 N+ x2 V8 k - print("Dispose");
+ W6 [& n) }7 D f; G, I" |/ @( u - state.running = false;" R1 {+ d: ~' b d8 F
- state.f.close();5 [1 M" j' ]" e
- }
! X5 Q: K9 L3 u* i; E7 o1 x
2 D! k* z; I$ a: Z- function setComp(g, value) {
) a6 Z* M6 y" @ - g.setComposite(AlphaComposite.SrcOver.derive(value));! R2 {% I0 F# `
- }
复制代码 2 ]% V$ q* q) M/ K x0 W' b. e
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。! H/ v2 ]. y. j
" Q( E. x6 [4 h9 k" s7 j: k
7 t7 W! m5 K0 @, b1 i顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
& w( r' b0 [$ F' O( L$ | |
|