|
|
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
×
9 a; r$ ^! X- @% K. S% S
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。) H4 B/ p. i$ d5 O; q
- importPackage (java.lang);; p- N% W' G8 d0 _+ s
- importPackage (java.awt);
4 `' E9 W4 h! N P' ]3 H. K7 ]8 G - ' _* M% p1 O3 G" g a
- include(Resources.id("mtrsteamloco:library/code/face.js"));" g" g2 j# V9 n7 d% w, ~. ~8 @1 B
- ( [+ r( `& _8 H) M+ N" x
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
+ b, P7 l3 N D( L6 P- o% F2 t - 6 V& ]! u$ o; b S
- function getW(str, font) {
! j& L' m( {% C - let frc = Resources.getFontRenderContext();8 M& i" W3 P* H0 K4 j7 L1 r: t
- bounds = font.getStringBounds(str, frc);
+ Z6 F. Q# r! n( V- T% G - return Math.ceil(bounds.getWidth());" M3 _5 ~8 K% @% R! c0 ?; L
- }
Y) `; M; U" J$ i( x
. F' D' k w5 s" b$ ~- da = (g) => {//底图绘制( j6 d( e& q. _& O& X- {
- g.setColor(Color.BLACK);; G6 T5 e& S4 r8 _+ O: m! p
- g.fillRect(0, 0, 400, 400);
3 K f. j5 K: E - }% f, U1 l M [
2 _3 D2 ?2 p/ |7 ?- T8 }! D- db = (g) => {//上层绘制4 c& z2 d6 x' u& b
- g.setColor(Color.WHITE);
- {; x' f: ^2 H' w9 g* i - g.fillRect(0, 0, 400, 400);- y' {3 n+ G) X) \
- g.setColor(Color.RED);3 d/ F' k: ] F, O r) A4 ?
- g.setFont(font0);/ [0 l) G8 ~8 B' k5 y
- let str = "晴纱是男娘";
& t4 g" N) F- M0 A% ^ - let ww = 400;
+ s, e% H$ o: k/ o; ~- ^ - let w = getW(str, font0);$ v7 r. c6 ]* D$ V; m r! `
- g.drawString(str, ww / 2 - w / 2, 200);
8 j8 w7 }$ Z9 u - }6 b k8 g( @3 i W# a$ `
- " P% m; ? S" F; f# E
- const mat = new Matrices();
' {) [& F* r& r9 Y - mat.translate(0, 0.5, 0);
! Q+ o& E* o" z) L& r3 y+ w3 e3 v
, x8 i( ?: @( d# r- function create(ctx, state, entity) {3 o8 E3 U# q" e: ~
- let info = {
0 ^5 G! { E% g6 w3 q8 i - ctx: ctx,
; u: d3 Z7 N& z; C - isTrain: false,) U" w; K% i" h k- ?. x
- matrices: [mat],
& L& g5 Z- ~& r- ^, r - texture: [400, 400],
" S' C! A8 I! S) z - model: {
; v4 q7 |" ]$ e1 {- R$ g0 ]( z - renderType: "light",
+ D& n# ~' J9 q7 |3 C - size: [1, 1],( G# S! K' Z: a4 y! `
- uvSize: [1, 1]
1 g+ c, I+ Z4 b8 |5 s3 ^5 m' q - }; Y( W' ]' Q: w4 W" P
- }4 f' O4 V1 K: c; ^% O
- let f = new Face(info);! n+ b! M6 U# s9 ?
- state.f = f;
1 {9 ?7 n3 Z, o7 u0 L( X
0 a' g ]. U& S* b2 R- let t = f.texture;
, N8 U: b) J) x4 _2 x - let g = t.graphics;$ L& E8 R" S$ N1 r4 [: v
- state.running = true;& i4 p! F# D o$ M5 z1 t% B$ `5 X
- let fps = 24;
3 U% f. k! Q W' ?* p: s" p8 L - da(g);//绘制底图
$ N( S, ~& A( F! }3 N9 k - t.upload();
! t6 E/ r3 u# e I8 f" o5 m - let k = 0;
+ t! T; J- s0 D - let ti = Date.now();0 T1 s$ L. e$ e U
- let rt = 0;8 @6 J3 h- A- j3 g- t. g$ y' K4 K
- smooth = (k, v) => {// 平滑变化5 ~/ s1 g' f9 `8 n# m+ A" V
- if (v > k) return k;
- [, d$ z+ i$ U/ G, a/ Z& ]1 b$ K9 C - if (k < 0) return 0;
4 b; s0 E, c7 Z1 l; c- X( R/ j7 l - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
6 T3 x* q/ J$ a - }
' H) ~8 `8 Z: Z5 s - run = () => {// 新线程
2 J) I) E9 N. P3 N" h' ]. ?# |& @ - let id = Thread.currentThread().getId();8 ], d" u$ u% J: Q
- print("Thread start:" + id);' z$ S3 z' o Z% S4 d4 Z
- while (state.running) {
- C: L, |2 V2 T* X% h3 h - try {
5 J# I$ x; j( K: M8 I0 ? - k += (Date.now() - ti) / 1000 * 0.2;; m1 }& t9 g- i! o, y$ `' A" c
- ti = Date.now();/ m! Z: d2 J' ]$ L( E4 \
- if (k > 1.5) {6 u1 a0 ~3 F. W* |4 W) ]
- k = 0;
! [& n/ J% L6 A4 F% g0 Z6 l - }* s6 Q E7 B3 R
- setComp(g, 1);% a9 Q& c5 t3 O
- da(g);
( M8 \7 C3 ]7 u- B5 l4 @ C - let kk = smooth(1, k);//平滑切换透明度
, g1 @% s l- {$ k- h3 h. ]5 u - setComp(g, kk);0 h; j6 f! t8 P) y4 i# B3 N
- db(g); }$ }$ D& a! y) ~9 M
- t.upload();
% u3 B5 g$ z, k/ K/ w- } - ctx.setDebugInfo("rt" ,Date.now() - ti);8 C9 ]1 A5 |! s; [0 ]6 Z6 c
- ctx.setDebugInfo("k", k);
; X& S9 D$ W9 T5 a, X2 J5 T' Z" H - ctx.setDebugInfo("sm", kk);
3 T5 t& x- H x; `. v5 i( Q1 a - rt = Date.now() - ti;
% M, y4 @5 V7 q) T' O - Thread.sleep(ck(rt - 1000 / fps));
2 V( q* D* y1 s- W - ctx.setDebugInfo("error", 0)
4 \. _, T" p% v5 g0 J5 ] - } catch (e) {% o( K% U; ?7 s9 x
- ctx.setDebugInfo("error", e);, D' P$ N& S4 s) Q
- }
! E2 f9 A6 ]; A; i* p - }
! A0 }( B {" v- [& }5 B - print("Thread end:" + id);0 ?/ W! H( F5 X$ U& Z" T
- }: }% F4 C$ @9 D5 z' U
- let th = new Thread(run, "qiehuan");/ y) P& z+ o3 O1 V3 e5 ~
- th.start();
) J8 @7 ?( z4 b2 x* F4 P - }. ]& B0 P, }9 _5 S. v0 t( R* |
2 a( i5 f5 T# {- function render(ctx, state, entity) {' F) L2 J1 i6 G# q8 u
- state.f.tick();* k: k! Q6 ]: L
- }8 N6 b1 I% }: z+ v
- ; f$ @% g( c: t& }
- function dispose(ctx, state, entity) {6 f4 h* V! B4 X, [; c; D
- print("Dispose");
0 D- F2 y( e/ {% D - state.running = false;/ s# _2 }: f3 }- x6 @: f6 j
- state.f.close();- f5 ]. n: B, Y# |: a4 B( m# V
- }
" u5 T+ H# i% }& X( B ?
* |! o& }' J. a& o% j) }" \- function setComp(g, value) {0 J+ P/ |0 ~/ G
- g.setComposite(AlphaComposite.SrcOver.derive(value));5 @4 I2 r2 f- L! E
- }
复制代码
r/ y; U, B# y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。- N2 \; g3 {5 |: y6 h! E: _
: f7 J2 h% c# F# ]- l; C# ~5 T6 G
* H+ ?/ i. T) Z$ D; @7 Z
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
0 A- U1 I4 C7 Q& S$ b$ `; n5 e |
|