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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。* O4 D( R# j+ g* @
- importPackage (java.lang);
& C! }, T# D. G E V8 M - importPackage (java.awt);6 _; T& o, n( x! X6 \
% p# j0 H( V2 S9 ~6 t- _$ i3 _- include(Resources.id("mtrsteamloco:library/code/face.js"));6 N) j/ ~6 _3 i6 }2 A
- " b1 j0 Y: ?% V5 m( w1 `
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
8 ~3 X( R' R: g3 T
/ O4 J4 P* D q- function getW(str, font) {
5 s! t5 ]& o2 Z4 Q: @6 I - let frc = Resources.getFontRenderContext();
/ I& c) g; ]# z - bounds = font.getStringBounds(str, frc);+ n6 j" W) M' }
- return Math.ceil(bounds.getWidth());/ C# T1 W D* o* p( r
- }
- z6 H6 w5 k: p" H& @6 y: Z
8 Q+ V' g" p0 O d0 ~) Q- da = (g) => {//底图绘制
+ ~( I6 i8 U/ U# I- k - g.setColor(Color.BLACK);
2 E/ u6 Y& P9 Z5 v8 S; N - g.fillRect(0, 0, 400, 400);
5 C# p P# f2 w ?* m8 g - }' l8 [7 N+ X5 \+ I% M4 L6 K8 ~
: V( N! T6 {) I$ i- R9 t# y- db = (g) => {//上层绘制
8 `$ e) G! A* q% H - g.setColor(Color.WHITE);% t5 F, {9 \( l& o/ m; [$ x
- g.fillRect(0, 0, 400, 400);
0 M. j) O) F) { - g.setColor(Color.RED);3 V% t; w: s, k
- g.setFont(font0);
( `$ E& [& z( D - let str = "晴纱是男娘";6 s( k7 [* S8 C5 k& o& d
- let ww = 400;' U- @- O9 p" F: j$ J" I
- let w = getW(str, font0);
8 m# s# t5 K& ?# E) h8 v5 _7 F - g.drawString(str, ww / 2 - w / 2, 200);
3 N$ p- c# V- Q4 B# q - }
: q, e4 t7 ^2 t - ( u1 W$ \* ?9 D: h
- const mat = new Matrices();7 @% q, T$ F" @& _) n
- mat.translate(0, 0.5, 0);/ S8 a: V1 g. r) H1 _: b% K
- 9 {' J; P F) }# ^: w5 i
- function create(ctx, state, entity) {
9 k3 X) Z6 K; f; H, G1 | - let info = {8 e( Q3 c9 N7 o
- ctx: ctx,& l# [# k" L; F1 T! {
- isTrain: false,
- a: C8 `* _4 Y1 X, Q, B( N - matrices: [mat],
( q" @8 \ x- D# O - texture: [400, 400],
4 v% u* b9 ?& R- n - model: {3 e+ |1 c4 k, M
- renderType: "light",5 p9 M" F! D/ [7 f
- size: [1, 1],
# {% y- ^/ L' y2 a6 L) S: h/ m - uvSize: [1, 1]
0 R( Q$ G q$ T' f% j! o - }
7 u+ j- q" ^2 h- o - }
; u2 O4 _! W8 ~4 `) g - let f = new Face(info);+ t8 I# {3 U& O8 l6 d
- state.f = f;
1 E: j9 q& V% k, h
# |5 i# K# z R$ x( j9 T2 I- let t = f.texture;
9 M8 B, d5 h' }+ B# G5 u4 e - let g = t.graphics;. X. i" U0 Q! o! M, j( w! {
- state.running = true;( R4 l. w! A/ j0 ?- M: v5 B
- let fps = 24;
+ v* E3 e; n9 K8 s$ K7 x; { - da(g);//绘制底图- Q0 o& {1 l% q. r2 w# `& r! }+ K
- t.upload();
" F: V/ ]" H3 x, e. L5 r: [: Z) K3 { - let k = 0;4 S' D( X7 T% R% h2 v1 I+ `) G
- let ti = Date.now();
& x! F6 ~; A# N( _, L - let rt = 0;
! c! [8 @# @- s7 v - smooth = (k, v) => {// 平滑变化
8 W/ }% q! @2 g& T - if (v > k) return k;
8 h( J+ ]1 ^ v& j - if (k < 0) return 0;* k6 d: o! K8 h" f6 p9 `
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;$ v% s$ G! a5 k% s6 w7 _5 \# @
- }
2 {& w% h3 ~% v - run = () => {// 新线程
- m' R! r+ U) r3 r4 u" A - let id = Thread.currentThread().getId();
5 p1 \6 v5 y8 [$ i# o6 O0 a - print("Thread start:" + id);# Q& @5 e. C" Q7 a
- while (state.running) {: m* A, H! g4 N3 k% v6 g) `
- try {+ B, Y% ?- D7 }# J/ j
- k += (Date.now() - ti) / 1000 * 0.2;3 U- E( N' q+ d3 }+ |# J1 \1 ~
- ti = Date.now();2 v) W8 q$ F" Z& ]+ {
- if (k > 1.5) {
) L# t% K- M( G2 [( K) K - k = 0;
% J0 W' u; ~1 B+ R7 _4 @. e( | - }
1 ]/ K0 |, Z8 @. Z) Z7 p - setComp(g, 1);
5 [5 {# L8 X6 L# ]) A, T - da(g);. W1 B: f, a# G
- let kk = smooth(1, k);//平滑切换透明度1 D' e# F+ {8 @3 b$ M! Q
- setComp(g, kk);% C6 P A$ B: _& \6 |' k2 q
- db(g);
; p- N V# ?: s/ s - t.upload();
! u& Q& c1 n& z+ Q1 O, A+ `' A - ctx.setDebugInfo("rt" ,Date.now() - ti);
5 } `% z. d( \4 _+ w - ctx.setDebugInfo("k", k);
O% y2 a- ]2 ? - ctx.setDebugInfo("sm", kk);
& G" d# R" B# ~0 u$ o8 E @ - rt = Date.now() - ti;2 o% J2 E) Q1 @, _# w
- Thread.sleep(ck(rt - 1000 / fps));* N* r) U" I& t
- ctx.setDebugInfo("error", 0)
7 Z) x7 r, B& ]* k! e* u' ~ - } catch (e) {
" q! F+ v) k# Z( N - ctx.setDebugInfo("error", e);
, o3 c: |7 @; g - }9 N) I! L" o7 F' k# S
- }
2 |" q' d) r* r$ [$ y - print("Thread end:" + id);, y/ ^9 \; g5 r" ]
- }
5 c/ V! p/ Q- F! k# r - let th = new Thread(run, "qiehuan");
% T5 T) h* R& D8 @ _ - th.start();
& U T4 i: K0 n+ X: [+ R. y0 T - }
! h5 [* |$ u, D- b5 Z. l - % M3 U# o% T0 H% J! X' h- z
- function render(ctx, state, entity) {
, Q! S+ Z$ i- h, v+ K+ D% f - state.f.tick();
) a( G; \+ {8 c: w! u - }$ V" a% ~# `2 J- |( |4 ^8 B* `! x W! u0 ]
9 G$ v9 V' A8 V0 x4 P' i- function dispose(ctx, state, entity) {
+ d- Y* x- P+ B - print("Dispose");9 S( R7 u: V7 r& e. Q
- state.running = false;
: R* k5 C' A' M$ y9 D" u - state.f.close();: N2 G3 R) ?: l! o M( g; J9 ?9 w( q
- }
4 ~- J9 }! R9 l, B, o& b ` - % p9 W' i; |" C: H% s: R* h. P
- function setComp(g, value) {
0 ~) N* @0 R! j0 f% c - g.setComposite(AlphaComposite.SrcOver.derive(value));
8 {( B! U9 |% p/ Q - }
复制代码 * R7 t* `( B1 M( ~) U3 z# f9 @$ l
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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, r) r* |7 V X: w- ]5 {' h' F# k: }顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下): J% @2 K6 T/ ]
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