|
|
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
×
8 S" b: \) c, I0 t0 p P' Q2 P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。7 } g- e% U$ X" A6 Z
- importPackage (java.lang);
# n/ g6 [1 ~* W+ J - importPackage (java.awt);
( d# N7 R1 I+ r+ S' [1 N
1 \3 ]% N0 K& W- include(Resources.id("mtrsteamloco:library/code/face.js"));7 L' S/ Y# P/ Q8 X1 d7 n7 v
/ L& h: t6 u; B# X- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);4 k" ]; v0 k9 @
- , _2 x: s, @- X* ?: K! N w( L' y
- function getW(str, font) {3 V1 L- i2 j/ v% N
- let frc = Resources.getFontRenderContext();7 n4 ~9 I* Z# E
- bounds = font.getStringBounds(str, frc);
y# l5 H. j5 J/ Z% { - return Math.ceil(bounds.getWidth());- K6 j5 |# m u! {
- }0 p" E2 l) q) w7 A2 d S
1 ^0 B* g) W7 J0 J" [# a- _; U- da = (g) => {//底图绘制
) {" E, L: ^4 i. C* q - g.setColor(Color.BLACK);0 @" m9 _7 ?% H, l# r
- g.fillRect(0, 0, 400, 400);" s _% i" N- w. W! |
- }
) w' E& }+ y! t! C - 0 X1 _* T# R' L# ~9 ?
- db = (g) => {//上层绘制
# ^) \3 i5 v g+ v! G - g.setColor(Color.WHITE);+ N7 f6 }/ O- i* Q; w, x+ T
- g.fillRect(0, 0, 400, 400);0 q& }) ^) l" c" l
- g.setColor(Color.RED);# o: q* r% S: n" @$ y
- g.setFont(font0);: r ?7 v! s. i% J, m* A' Z; f
- let str = "晴纱是男娘";
. n' L& r* o* Q6 L0 S; N - let ww = 400;3 F. i) c+ f/ v2 Z
- let w = getW(str, font0);
, ]+ @- S% T s+ I - g.drawString(str, ww / 2 - w / 2, 200);
( a# u( l. W! H" O - }
, z2 Y6 D& h4 H7 s" ^ - 8 W6 x/ m* {3 z. z6 l
- const mat = new Matrices();
( N6 e" u a0 W& M# M" z3 [0 d - mat.translate(0, 0.5, 0);
/ f a V4 B5 J& b2 Z - / S% S& M$ t- l3 t
- function create(ctx, state, entity) {2 p Y! ^7 {+ g3 l& A5 h/ Q
- let info = {
2 C. @' T0 p4 e) E6 @2 D# T - ctx: ctx,
1 ?1 f8 e% |6 l5 u: j - isTrain: false,
: p/ e2 {1 m% H$ m - matrices: [mat],, n, m* T3 Z: [
- texture: [400, 400],& E7 A+ {0 Q& w @$ U7 x
- model: {$ N ]% l) |) j, n
- renderType: "light",/ D7 q- q& j/ P$ D) J- I2 ?1 f
- size: [1, 1],6 G: ~# {3 ?; d$ J% P; J
- uvSize: [1, 1]% U+ U* X$ o% x4 w7 v9 k) m
- }
2 F j8 O: Y) h0 o H - }
' t e! ^) u: D0 e6 S - let f = new Face(info);
% P, [" D0 g% S9 e2 V# k - state.f = f;
h9 m1 E* b. \7 Q; Q0 ` - 4 I! H+ u) ?9 q' `. K, A
- let t = f.texture;
9 P2 n* ~4 |- P& Q* ]5 w - let g = t.graphics;
0 j6 i2 \8 L9 |, d5 } - state.running = true;( F3 U4 \, e3 a* M! O1 j; l
- let fps = 24;& R8 C7 E& M) q5 N, }
- da(g);//绘制底图# g* @7 G# m* L# G. {$ t* I
- t.upload();8 ?: w+ E7 L. ? `1 S
- let k = 0;7 D' S% y. U, e2 c+ p4 h
- let ti = Date.now();
2 V7 B0 j7 j& P8 ]1 l$ g - let rt = 0;/ u; n/ N) \ @1 E( y& a* w
- smooth = (k, v) => {// 平滑变化7 _$ g/ A9 U, c6 w4 k, \3 Y- W
- if (v > k) return k;
$ W% J f6 U4 j* V+ l - if (k < 0) return 0;
8 x7 `9 H7 `5 W3 O1 d5 e8 c- H: l/ \ - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;/ Y U- H9 F0 A0 X3 }& i+ a
- }% E7 q; h3 Q! q) J
- run = () => {// 新线程+ G" N5 H9 j! [$ O) n5 K
- let id = Thread.currentThread().getId();
% W. D- `4 s$ Q* _2 t* G0 X - print("Thread start:" + id);
/ }4 e$ L0 w& I' Q% x6 D - while (state.running) {
$ ~2 s# R l' h* \+ Z/ X2 |1 q - try {2 F# c# H6 u2 X2 m+ i* ?* M
- k += (Date.now() - ti) / 1000 * 0.2;
* c& Y7 O5 {( l) [1 I( J) Y/ _5 K - ti = Date.now();0 k! u$ `$ Y6 B2 S0 k
- if (k > 1.5) {
U1 u: K3 v$ l( N/ R9 { - k = 0; q) A+ |# q s: l! S
- }3 l3 V; q0 V8 N+ S& c
- setComp(g, 1);
/ D' N0 p$ z9 R- s8 |2 u, F- N - da(g);7 }4 y& ?, {% a/ l9 I, ^
- let kk = smooth(1, k);//平滑切换透明度1 ^( X! a* X4 j: h5 u8 }
- setComp(g, kk);7 M, z' J/ u$ v7 f2 e
- db(g);
; W7 `& u6 N+ e. `, @9 ^2 M - t.upload();6 S: m6 O9 A+ s s' O
- ctx.setDebugInfo("rt" ,Date.now() - ti);% n N+ F' ]# G' s/ h& |- Z
- ctx.setDebugInfo("k", k);, m* R% K6 E% }
- ctx.setDebugInfo("sm", kk);1 k! J8 H+ j8 H1 l* u4 M
- rt = Date.now() - ti;
q% H# A9 y2 k: Y6 Q! Z9 s - Thread.sleep(ck(rt - 1000 / fps));8 d f8 X, g' {! f( b( i7 _8 P
- ctx.setDebugInfo("error", 0)
' ?$ K* C8 L+ X9 D' ^+ J# g - } catch (e) {- W0 _# P0 I# ?8 M3 ?2 t0 r
- ctx.setDebugInfo("error", e);( m# L1 f, B! h# S) F5 J/ x
- }7 Q9 m9 i f( @, s( w
- } t4 R! D! E1 ?
- print("Thread end:" + id);
/ C9 q) Z0 h5 P8 [3 V - }8 I' f, r9 g& n. x
- let th = new Thread(run, "qiehuan");
4 R' v: {# ~/ X/ P" G - th.start();
3 v1 u1 P, `. ~* Q: t6 v9 H. y - }
6 f2 X, j) Q4 x4 I' n# ~* y
. Q1 R$ e( @4 ?. n/ \9 C- function render(ctx, state, entity) {& K# F0 w* b) ]
- state.f.tick();
$ |* e" e7 }# ~6 j- b! Z6 h - }
9 F! [8 T0 i0 x, y - # Y. f' g% o& f# y9 Y, p
- function dispose(ctx, state, entity) {
+ `/ @7 T, w: F/ H( P/ Y! S2 E - print("Dispose");
9 Y6 t% G& s) R4 A3 z - state.running = false;' Q% X8 M- i0 y# K' x: X8 B' x
- state.f.close();
( E+ Y4 u/ F I" y# j8 y+ i - }4 G! H5 }" C" C" d3 }
% m/ x3 `& P( N# w$ A' ~6 ~: V( J- function setComp(g, value) {
( B5 k) J7 ]: k L - g.setComposite(AlphaComposite.SrcOver.derive(value));
$ j5 s' ^ W3 c2 W! S- Y - }
复制代码
* o1 b4 @# }) I' V3 U* C6 e: W8 H9 y! t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。; b# E; f( t) M x
8 \) V! M: X# U& F" z
6 ]3 Y; a1 V, d b+ ?/ {
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)$ q- k$ ~( J$ E
|
|