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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。4 q" y( `3 [- |* L: L; ^# o
- importPackage (java.lang);
: ?* {+ o: p9 _$ n" D - importPackage (java.awt);' _' ?" n" P, B' f7 v4 h/ c+ r
- 5 c4 b$ B/ ?& S% m
- include(Resources.id("mtrsteamloco:library/code/face.js"));% Q+ S2 ]5 `. _0 N7 Z- i2 n. _
6 [- x+ U/ H( _% s3 Z- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);" H, m6 x( O9 t, }* I3 I
- U0 C8 m |* m, G5 d) u2 `
- function getW(str, font) {
+ j7 q; P8 p0 N* i0 l - let frc = Resources.getFontRenderContext();
9 X* H7 u9 f v! R, Y# c - bounds = font.getStringBounds(str, frc);
; L0 S/ i, n7 e4 Q8 U* c - return Math.ceil(bounds.getWidth());) G4 |0 {9 k; s
- }
% ?) I% e! W2 Q! g7 W- o* I/ ]; w" b
% V! |5 a5 R% C5 D: u) p- da = (g) => {//底图绘制
( f! O. q* S% b - g.setColor(Color.BLACK);3 n% t4 q: R3 G$ @
- g.fillRect(0, 0, 400, 400);/ S( e! w$ m' p& N$ C1 b4 E
- }/ Y. p, A/ [! B) u0 V
4 }# e2 p( y, b5 ~7 I% V" I% x- db = (g) => {//上层绘制
; d# U# o. v; u: F* w. Q - g.setColor(Color.WHITE);
G0 ?) o4 w" A" N* Y/ i& H - g.fillRect(0, 0, 400, 400);" u0 H" a& E% U/ l
- g.setColor(Color.RED);# O9 L6 w; ^% J
- g.setFont(font0);, q; F' k% Z) U. Z$ J4 i
- let str = "晴纱是男娘";6 u6 \& ?$ w& ]! h; X3 V- }+ L
- let ww = 400;
5 K* j. l3 V6 o - let w = getW(str, font0);$ F6 R6 e a# N# A( O
- g.drawString(str, ww / 2 - w / 2, 200);
k$ b$ `, s4 }0 V2 o# i) \& [6 _ - }
% h/ U8 ~& y( R* q$ }6 x% w
- `8 H; I/ Y8 D. B2 P Z4 Y- b- const mat = new Matrices();- R: z* I: V K- b1 I& H6 q
- mat.translate(0, 0.5, 0); |7 k4 o+ M z" F: N) Y: C4 p
( m8 u2 B$ L5 M6 p/ H* C- function create(ctx, state, entity) {
1 A' t5 A! m, Y$ \8 R! f8 X/ ] - let info = {
! c% T) d$ P: p- w - ctx: ctx, Y4 N, E9 {& F* |- E
- isTrain: false,# _1 ]9 J! Z( l
- matrices: [mat],2 b4 ^ T& G! s0 c+ p) e
- texture: [400, 400],/ o/ k% a; f$ i0 w! a
- model: {
" E' w# Y; p% N; v6 k - renderType: "light",
3 n7 o* }1 Z) e+ z# e- z( A - size: [1, 1],
6 t* X9 ~) _, t9 c - uvSize: [1, 1]7 d( U x, N$ ^' L
- }
3 T9 g/ I1 F: E/ z* Z. @# I7 U - }5 _: l9 m3 `: p4 I- \# X
- let f = new Face(info);
6 |. W7 f; _6 B- O- O+ H; t - state.f = f;
/ n2 V/ z+ c8 W! G. I. T' w5 m3 O7 b - 3 ^6 b' g* q8 H e7 ~( p) c u$ a
- let t = f.texture;
8 C7 P Y/ z4 X6 a( P% U4 @3 r - let g = t.graphics;
) q: c8 G! \% j0 c8 m - state.running = true;4 ]: }! h/ i. s
- let fps = 24;
' K1 s$ A* F! M2 o i9 A - da(g);//绘制底图' B7 D- f: _" e; C' U' T
- t.upload();9 D& Z, z) S: u
- let k = 0;: v U8 @, q: S& b4 f; a
- let ti = Date.now();
0 A6 E+ ^+ ^" i5 \ - let rt = 0;
- ?7 i" w0 ~2 Y% u% _5 E - smooth = (k, v) => {// 平滑变化
$ C+ o" F. G! h - if (v > k) return k;$ g2 [ W0 ?5 B
- if (k < 0) return 0;
% O* g& R8 R; b; i - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
+ H1 E m& F% H3 C - }, Y- @% b1 v Y# e* [% @) L6 a
- run = () => {// 新线程
/ C# }- C; N. o5 D( }* p - let id = Thread.currentThread().getId();/ c' L! Y; {; @
- print("Thread start:" + id);
; _4 G2 L M) @' k$ e - while (state.running) {& ^. e' N2 `9 K+ l6 |; T
- try {7 c* U( g# C1 R' o0 E) v
- k += (Date.now() - ti) / 1000 * 0.2;$ t* r: v/ }: Q; ~& |! c8 p; g( b
- ti = Date.now();
* w% D( G f* B- p4 h - if (k > 1.5) {
: ^2 M9 g5 V9 L4 e* ^ - k = 0;
* T- G/ k$ ]8 C/ ^+ N5 @ - }
/ |0 ?. l* \( M - setComp(g, 1);: F* M! t& f. J- r' c$ z$ |" g- z
- da(g);. ^$ S' B2 u i; \9 Q. ?/ Q1 p+ D
- let kk = smooth(1, k);//平滑切换透明度
0 f: E+ C1 O" r; o! J - setComp(g, kk);2 H" P8 `3 ?8 D$ j
- db(g);7 i$ M9 P' p7 V8 d0 X! `
- t.upload();
' C! v9 I7 z" j: h1 K2 v# b, V - ctx.setDebugInfo("rt" ,Date.now() - ti);
, p+ U$ h1 ?8 f2 ~/ G - ctx.setDebugInfo("k", k);) _5 X- |& l6 _ Y8 `( Q
- ctx.setDebugInfo("sm", kk);
( _& O6 A% L$ a/ j - rt = Date.now() - ti;
3 H. q% {& @# [8 Q5 r: u9 j# f - Thread.sleep(ck(rt - 1000 / fps));; G _' b# O( s
- ctx.setDebugInfo("error", 0)
- V& u/ v+ }! p1 ?& q - } catch (e) {
9 K2 ]1 c Q; C - ctx.setDebugInfo("error", e);
}9 W. |: ^) A* y5 z1 K - }# N8 t( p& R' ~- y1 e1 k
- }
3 G+ V" x( b D `4 i$ x3 c - print("Thread end:" + id);
6 }$ n7 y2 ~. |& [! { - }, x/ {/ Q9 n# H9 X0 V" H
- let th = new Thread(run, "qiehuan");% M3 A: J7 ?( \* e; E3 x- S% Z! P
- th.start();# ?; {7 k: @5 C m0 `2 w
- }
' V0 \8 n/ e# R3 c- C
0 T8 E: B7 m! k6 t- function render(ctx, state, entity) { \' f% {$ I9 a6 S$ T( ^
- state.f.tick();
3 A7 S3 l7 i$ i! x5 `. E - }# U! L7 y; G0 A+ C8 z- ~' k
: ]: P. b% a9 G% s$ r7 R% h- function dispose(ctx, state, entity) {
/ I# o, [- i x {# p' o - print("Dispose");( l" P- _, x; Y% o( @8 q9 f; V! F
- state.running = false;3 e- ^5 }' D% M, h! a' o B
- state.f.close();
9 m) j& L: X' ~' G4 g - }+ j9 x9 T9 r/ F1 e- ~
3 o# P( b5 C& f) d8 t ]" q" H& Z. B- function setComp(g, value) {
. O, |6 h% B' Y& B# U - g.setComposite(AlphaComposite.SrcOver.derive(value));
* X ^3 ~& q' f7 o4 B - }
复制代码
4 a* R4 s8 {; s6 o; u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。
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3 w) \( v" \* e! X( q4 v# u. V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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