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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。
) _2 A# {) y" z! }1 v- importPackage (java.lang);$ U0 h/ ]( {7 k3 V
- importPackage (java.awt);
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- include(Resources.id("mtrsteamloco:library/code/face.js"));
- t% v6 |% ?/ v. O, g
& G) m4 @# a* t- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);9 ?* P& f4 c' T5 [: D
0 x& o0 D- O8 T- function getW(str, font) {
. K0 S# N6 F, Q' q8 B7 X$ z - let frc = Resources.getFontRenderContext();* b4 {- S! i8 M# f
- bounds = font.getStringBounds(str, frc);
# e- p5 b& T @7 R, c3 [$ _6 p! ?/ t - return Math.ceil(bounds.getWidth());
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( N* Y% r" g) a: V! T% U/ Z- da = (g) => {//底图绘制2 Y3 Z8 [; i/ W( l: E
- g.setColor(Color.BLACK);. V' `; i* w) t5 v" }
- g.fillRect(0, 0, 400, 400);
_" }' @. H. j& v - }
5 c+ i; ~! x9 p1 P
' Y8 D+ q4 b, D- db = (g) => {//上层绘制/ C0 a4 C7 N1 S( |% j& W5 V
- g.setColor(Color.WHITE);
8 ^7 p( V7 O2 t' M8 q& x1 l - g.fillRect(0, 0, 400, 400);) Y$ X' }* g7 K W, j' `. P
- g.setColor(Color.RED);
1 _6 C1 p% z e7 j, Z - g.setFont(font0);
9 M$ X" d9 p% F/ |) R& j! x - let str = "晴纱是男娘";
# i4 M! O7 l7 D - let ww = 400;
, A6 i; q" Y' }. s# C* I - let w = getW(str, font0);+ Q. c( O( z+ z: A
- g.drawString(str, ww / 2 - w / 2, 200);8 v9 [' S. G' F. E' o% \% X
- }
- H- Z' L+ N' y3 `$ e - ! h W: d. u/ b
- const mat = new Matrices();
f" Z& C; D3 `- J( c - mat.translate(0, 0.5, 0);
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- function create(ctx, state, entity) {# g9 U9 u) H, } r
- let info = {
% B8 Q% U3 j+ @" C* D# |! @ - ctx: ctx,
z8 c) {! }. ]* n: t - isTrain: false,+ J) R. L1 [( j# f9 m9 N( w
- matrices: [mat],
+ P; h# a& p) A% A - texture: [400, 400],' z4 G& `+ G$ R2 \( G- v+ U
- model: {5 d% u! S' C: C& J$ @" Q: [
- renderType: "light",$ y" u6 M8 B+ R/ T
- size: [1, 1],6 m, B$ ]; @" Y, J& Y
- uvSize: [1, 1]
0 ?& x) L( V8 R7 _0 J2 @ - }
3 G- q2 g. r" k* q - }4 [* A5 a& m- r6 Y- j! Z9 n
- let f = new Face(info);
# \: _9 s4 Q; l# D; s' `6 j2 E3 D" w( c - state.f = f;
$ F% {# ]6 z1 I: b' w, M+ t - x0 ]9 C& t1 d
- let t = f.texture;
% S3 _9 n$ k4 u - let g = t.graphics;
$ _' P7 @( B' L& J- O, T' h - state.running = true; K4 }8 X. k$ T, `+ z9 K( r- p% Q
- let fps = 24;
) k% F9 r: G, Y - da(g);//绘制底图6 f( ^# F9 H0 s: a
- t.upload();0 C a# ^' n/ c7 S4 A- T( `
- let k = 0;/ X: |# h0 P; r8 R
- let ti = Date.now();
8 q2 J5 B0 K2 u# J - let rt = 0;
% }7 s* T0 E$ S r R, D - smooth = (k, v) => {// 平滑变化. j* k7 k, h$ H8 P5 e1 ^" w" T
- if (v > k) return k;: P% B& D" D) J1 j* [; B) |
- if (k < 0) return 0;
3 U! p# d& N: k0 R - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;* I1 ?2 L ?8 Z$ w
- }
6 y) P: y/ C5 J y" @ - run = () => {// 新线程
3 C0 V6 G8 a0 i9 s( P0 X; ^0 c - let id = Thread.currentThread().getId();
1 c, R) g3 ^" G; T! r+ V* i9 @ - print("Thread start:" + id);: ?6 `: C0 R7 E& a1 c9 [# W
- while (state.running) {' g2 Z* T: G C7 L' x
- try {
: o) C& t4 S* ^$ k2 N2 A - k += (Date.now() - ti) / 1000 * 0.2;
4 m# w! {+ R* {, r$ L6 u/ w. M - ti = Date.now();! J3 ]1 Z" L0 \
- if (k > 1.5) {* S7 Z0 B k% h- ?/ A; X
- k = 0;& s$ B6 ]% H% v" N1 f
- }
3 K; }, W5 y, F; N% M- n - setComp(g, 1); V) E7 [9 Y9 l/ m( M
- da(g);
5 S8 W5 a( u: C" i: ? - let kk = smooth(1, k);//平滑切换透明度
2 }6 O+ g# B0 i3 `7 t! E6 B - setComp(g, kk);- @$ _" ^# ~. O9 Y6 [
- db(g);6 q: \' ]7 [+ `% d% `
- t.upload();
2 q4 K/ ~! z5 o K; C - ctx.setDebugInfo("rt" ,Date.now() - ti);
: \4 g& \) F) `0 ~* T( M+ p - ctx.setDebugInfo("k", k);
" {/ B, r6 }. C- W+ N - ctx.setDebugInfo("sm", kk);& c' l y `$ r
- rt = Date.now() - ti;9 d# O) R7 n. y
- Thread.sleep(ck(rt - 1000 / fps));, z5 k/ J+ W1 r: z! c9 c
- ctx.setDebugInfo("error", 0)
) F; f; k3 V7 h( t6 t - } catch (e) {0 q" F8 |/ |& u2 i
- ctx.setDebugInfo("error", e);
& }: `, D# U% Q! Y# |- r" R - }! n2 R& b% N- ^4 `
- }
6 v; H1 x% T* {+ B - print("Thread end:" + id);
4 `/ O* A& k' X9 e3 M6 C! W1 G - }
2 a4 h7 n; W- ]+ s0 e1 _, ^ - let th = new Thread(run, "qiehuan");
' U# k9 W4 V* B - th.start();
6 j0 j& U* n, k/ }' i - }
- Q- U! B- ]$ c/ k. i - / c f' N* [8 i# z. Z9 t% G' H
- function render(ctx, state, entity) {4 @: q/ I; x) C l" D/ z4 z+ \0 l
- state.f.tick();. g, G I ? r: t% N3 g
- }
+ [& R& J8 \ m - % E6 s8 b5 f% S" D+ q4 Q
- function dispose(ctx, state, entity) {
b! B! N E) }6 ?; o - print("Dispose");
" C( Z; O9 R; d( C- E - state.running = false;1 r6 A: @3 h) x. f8 g0 T, S2 E& X. H
- state.f.close();0 p) R: |- N' m4 b0 N8 ~
- }
" \6 _% x" R( I! R: r - # w. g5 l& f* Y1 w; U/ X/ W
- function setComp(g, value) {
3 M& P* j p& |. \9 G - g.setComposite(AlphaComposite.SrcOver.derive(value));9 G) Q& V* ?5 _9 h
- }
复制代码
5 i" o4 d( u; i* R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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7 h! I" N2 y' d# U: U顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)1 t; @; S3 T8 t) x9 V+ ^% C2 e
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