|
|
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
×
4 G b q8 T# ^1 b j9 q; ]" o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。
2 _* P- ?) _+ w8 ^# K& r- importPackage (java.lang);
/ R4 O1 u9 S; {& d6 a - importPackage (java.awt);
' f+ H5 V2 j" {% }/ z# a$ i - , Y0 Q& ]( b; q) W
- include(Resources.id("mtrsteamloco:library/code/face.js"));) D7 K: l/ J! u0 n
- 0 t9 l0 p3 M! Y' J
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
1 z# h) [. ?/ Q( L; l# q
6 Q3 G9 X; E" K8 w1 {3 T- function getW(str, font) {
& i) P4 ?0 ?5 y4 B$ `5 U! q$ O - let frc = Resources.getFontRenderContext();
3 b* p& a# d W. I9 O! @; u - bounds = font.getStringBounds(str, frc);& `; J0 X0 j1 G2 i' r; R
- return Math.ceil(bounds.getWidth());: |4 o7 \' L0 c. I
- }1 L$ G5 k, y9 \0 L
- ' _8 \* V6 l! V3 A) B8 |) j- C
- da = (g) => {//底图绘制% i0 }* c* m/ O, o' y
- g.setColor(Color.BLACK);
# J9 F/ w5 e9 C: L5 ` - g.fillRect(0, 0, 400, 400);) c2 k# O# L& Y) E$ E
- }
+ v+ j" H$ y3 Q/ w; E" B
% J1 B3 p, @& T: }. `4 c0 O) T, N- db = (g) => {//上层绘制' F0 |# s+ t! Q- @) s
- g.setColor(Color.WHITE);
9 j0 y2 E. f* S. d0 X; j - g.fillRect(0, 0, 400, 400);. {5 I! g8 n3 w" r$ J/ I
- g.setColor(Color.RED);
9 v8 H4 t. ~2 d# A& H- L- Z7 b5 n - g.setFont(font0);
- g# T0 t* z* H6 @! m - let str = "晴纱是男娘";
5 \' c7 p8 S7 E/ d) Y) o! x9 F - let ww = 400;
* L3 R2 x$ h8 O: Y) f# q6 y" O, Q - let w = getW(str, font0);: R# y1 p1 s ~
- g.drawString(str, ww / 2 - w / 2, 200);
$ a; ~( _5 P/ h; w8 j - }. e7 ^' y4 E% e0 R+ m
2 C+ I, n# O, \; d, B5 M" K& n- const mat = new Matrices();
- t' ~0 c; u3 R! n8 J* P - mat.translate(0, 0.5, 0);5 y: ~: H; J7 g$ e' U
% v# e S3 N3 w6 i( ~! V' Q4 a- function create(ctx, state, entity) { l4 z- w$ c8 I/ Z6 n
- let info = {7 m* O; g& }6 c1 Q5 F" T
- ctx: ctx,
; R+ h8 D6 S8 O* D- ^8 b( C - isTrain: false,
; E4 D3 g/ P# ?* q' @, D9 v8 n - matrices: [mat],
1 }' }: C5 X h7 V. P - texture: [400, 400],
3 I7 V7 ?$ ?4 `0 R - model: {
9 u, X; x* F& v/ ~: O - renderType: "light",
' `! g) |& e' ]7 i - size: [1, 1],
& o$ S. K4 t* p; E9 P4 V9 R8 z1 e/ O - uvSize: [1, 1]
: t2 F$ m! f e8 i3 P G - }
2 U7 K% y8 L1 h - }! V4 B: i$ K7 l* N
- let f = new Face(info);
& ^8 x; a# r' i - state.f = f;
/ C6 x' P* h; d/ A - / Y5 v1 k4 {* T g; D
- let t = f.texture;, I& i" ^8 _1 ]8 A# h
- let g = t.graphics;
& b3 I( B" v" [, [ - state.running = true;
3 {2 t" @: A& l$ O - let fps = 24;- n' c$ ?7 v5 T( x$ n0 w* v7 c
- da(g);//绘制底图
8 u/ e4 ]7 v% U - t.upload();
7 `4 Z( _2 n9 L' s - let k = 0;8 i) |# o; G# Y" K
- let ti = Date.now();
0 X" ~0 ]$ ~# `8 } - let rt = 0;8 b" g6 G9 f' A! ^
- smooth = (k, v) => {// 平滑变化
: w5 |% C# [# I: V7 T3 ] - if (v > k) return k;
- b0 ~+ I- ]% N5 H3 y - if (k < 0) return 0;/ H; d$ x; j, F' v u
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
) r& _1 E0 [& w' N% Z H - }+ T& l; t4 \- \1 c" e
- run = () => {// 新线程5 Y0 u- P: X+ B \
- let id = Thread.currentThread().getId();5 p, x, E. B! D; y8 ?
- print("Thread start:" + id);5 @1 {+ Q/ Y8 E: K2 a
- while (state.running) {
6 O* p$ F1 H' \/ ] - try {" Q4 B6 u, B7 j, d9 b
- k += (Date.now() - ti) / 1000 * 0.2;2 ~/ ~8 F- u# j- L9 |; i
- ti = Date.now();/ g y# T# n/ v: D! j; }$ v
- if (k > 1.5) {
3 x+ p: q! |. D! [9 g5 X - k = 0;
) y* |# r0 x5 J) w; D4 o9 H0 p* e - }
" c- a! j! a& Z - setComp(g, 1);7 u' R& _+ Z B. a4 }
- da(g);
( N* m9 H) t P4 z e$ b4 X - let kk = smooth(1, k);//平滑切换透明度
8 v, L. S" w2 S$ l+ A - setComp(g, kk);
/ k, _! g1 U. z% i8 i' l# N" G; [ - db(g);
6 i2 l8 @7 Y# s3 @- h - t.upload();
* n- ?( C# b. M4 w6 J - ctx.setDebugInfo("rt" ,Date.now() - ti);
6 y8 v9 g+ C0 T8 k8 `4 s6 T - ctx.setDebugInfo("k", k);( P0 M5 q. y6 x* i t
- ctx.setDebugInfo("sm", kk);
) I8 k6 c8 }; ? w, I3 r9 @ - rt = Date.now() - ti;
: Z9 A) f- ]& d0 I. U3 S' J - Thread.sleep(ck(rt - 1000 / fps));% }( V9 k$ R9 A( W
- ctx.setDebugInfo("error", 0)
% f* c4 [4 v9 h% Q - } catch (e) {' C9 M+ {& [5 `& U$ P
- ctx.setDebugInfo("error", e);& \. r" H$ h$ d! @# s* |
- }" G# A. t! \ d f
- }
6 M/ t% Q+ d. i% q y: a/ P - print("Thread end:" + id);8 W' k& w4 q% U0 `
- }0 o& f: f; Z4 F( q9 |, n$ K
- let th = new Thread(run, "qiehuan");8 n( J J( T' e$ d7 @. t+ V
- th.start();
* V. }& y+ h) L) j - }
% T' A& C( ~6 Z - ! `- t R9 P o( M: ~; y- f
- function render(ctx, state, entity) {6 J& f+ L# B$ x- Q5 L: c
- state.f.tick();
# H$ x& i( H( ]$ d - }/ K# X9 G% f8 J; g* P/ J) P
- 7 B/ I% {! p, i+ q, w2 F( X. P
- function dispose(ctx, state, entity) {3 \8 ?7 n! x7 S4 c) p
- print("Dispose");
2 s9 a1 @# k$ P: t' v0 G - state.running = false;# p% r# a, r) c/ h; Q6 j1 v
- state.f.close();9 n+ D3 q! T- n- S$ K/ }
- }* t0 ]4 v! B, b. _) I1 [& X
- 4 ], K8 t( P( @5 n, Y4 ]% I- g2 S1 K& q
- function setComp(g, value) {6 i( z$ v/ P0 C
- g.setComposite(AlphaComposite.SrcOver.derive(value));2 G3 b9 A1 s5 n- |1 `
- }
复制代码
0 R; P! q+ {; E1 B1 b; X$ W' E5 [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。' e4 k4 _2 s# w" \1 q
+ c8 Z" Y' @+ e( o- t5 i/ q8 H+ R c0 `% `# I! Y( e2 @' Y
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
% F3 R/ L- ]! N) y3 K |
|