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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。" T6 U! U. v" _, G5 k
- importPackage (java.lang);
2 P6 p6 _4 h3 P. W - importPackage (java.awt);4 g7 h) ]3 h: }3 C$ W. ~) @
- * W' ^4 P( _- Z8 s+ r+ Y+ O* i1 a
- include(Resources.id("mtrsteamloco:library/code/face.js"));
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* \+ `! n4 C9 ^, |/ e x1 h N- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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# l3 o( u# W# z. D1 Y; h4 I- function getW(str, font) {
4 ~1 n3 w: \( U8 [5 ^ - let frc = Resources.getFontRenderContext();
) k" C5 g' R* d; ?* L8 v7 I0 Q* _ - bounds = font.getStringBounds(str, frc);
3 U' r7 Y6 i$ e! |: l* _* Y - return Math.ceil(bounds.getWidth());
2 b1 ?: {3 m( T3 |% \- | - }
" e9 M- {4 U2 b# P& w
" S/ b$ K: V# f" F6 x5 I( v- da = (g) => {//底图绘制7 L5 V/ e* k7 p( i( E
- g.setColor(Color.BLACK);) N$ v% k! N2 [" \' o
- g.fillRect(0, 0, 400, 400);
8 y2 W* Y9 B/ Z2 p" {0 J i - }
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- db = (g) => {//上层绘制4 l. e. n& Y4 c) F: P9 t
- g.setColor(Color.WHITE);
2 _# ~. g) t" @" y - g.fillRect(0, 0, 400, 400);4 J, A- V& H0 J' U
- g.setColor(Color.RED);& @: O: T5 e! c
- g.setFont(font0);$ @, f& X/ B: `0 N8 M5 ^ j; \
- let str = "晴纱是男娘";
7 \/ J; A' M n4 M" l - let ww = 400;2 |! u3 o/ h0 {% n
- let w = getW(str, font0);4 ]! \2 E- Z7 E B: }3 L( e
- g.drawString(str, ww / 2 - w / 2, 200);
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' [0 H& ?( C8 E' o) E5 m; E2 y- const mat = new Matrices();
9 u2 l1 y2 R( A1 I4 d+ \( n - mat.translate(0, 0.5, 0);1 E- u' D% T7 t V a* h
- . m# C5 D/ I% G9 M; r
- function create(ctx, state, entity) {
. [6 m. Y9 u7 O) V6 G5 t+ j4 Z - let info = {) P1 b* G* s# T' \5 }0 ~
- ctx: ctx,3 Z4 w( {, F1 \) V8 |9 B; ]5 Z
- isTrain: false,
3 [) T5 |' w# ` - matrices: [mat],
+ {5 d( Y7 H: A - texture: [400, 400],1 g+ n, |, d% j5 t5 ]0 ~- U& K
- model: {
2 {# g& h: i6 U8 D) V$ W0 @- ]# o - renderType: "light",
' o h7 H" P% I. ^ - size: [1, 1],
" [" m6 q0 G8 c" F: j% b6 r - uvSize: [1, 1]
5 \$ ~6 y$ C: U - }
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- let f = new Face(info);( N# c8 F: N" V7 J% g/ @
- state.f = f;7 ^5 j0 @6 g8 P2 I
$ t( k( p3 w, K# E6 s9 K5 M2 Q, S- let t = f.texture;
" U+ \% s$ g* f$ p1 Z - let g = t.graphics;' l/ i6 e# {/ W$ l# a; {3 Y
- state.running = true;( ^6 d' f0 [' k8 V" S6 J
- let fps = 24;
# d' j: U8 ?# y0 u8 ? - da(g);//绘制底图2 P: r& |$ m( B
- t.upload();! ~9 Y6 D8 @7 W& `/ W- r) e) |
- let k = 0;& y" {* b/ _4 v! v8 V
- let ti = Date.now();6 b# q2 f: p1 c' R
- let rt = 0;; t& \) N2 q: [0 `/ H# W
- smooth = (k, v) => {// 平滑变化2 D" l& O# O+ I6 Z( a5 ]5 J5 [9 m
- if (v > k) return k;
2 E! g$ B: a6 n! H - if (k < 0) return 0;
{) p6 z9 N1 b2 l* K: B - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
/ q0 w, K# l" J& E# B) D' w5 o, ~5 [ - }
* l1 H5 ` I$ B6 C* f& A9 ^& F - run = () => {// 新线程
8 a( R' U4 S/ s, I - let id = Thread.currentThread().getId();
8 z, ^9 `- E* r/ X% F- ^' B - print("Thread start:" + id);
# b2 |- O% u# I! m - while (state.running) {
6 Z7 i H8 k, m. ^- K8 S4 j# G$ ^ - try {6 S& D- l' ?! H
- k += (Date.now() - ti) / 1000 * 0.2;
$ A* M/ y& K6 w8 B8 ~ - ti = Date.now();
+ d. h7 s8 v9 F8 ] - if (k > 1.5) {4 ~+ s8 }$ E& F; K
- k = 0;
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- setComp(g, 1);* Y4 n- m9 Q+ l. u# [& A' ~3 x l
- da(g);& q+ C; U `+ `9 i/ e
- let kk = smooth(1, k);//平滑切换透明度
0 q, _& E" G+ W `* D - setComp(g, kk);
+ S o5 F3 l5 \9 W6 x8 S- ` - db(g);
q4 A2 N% r7 B9 [( A# A" u8 I - t.upload();- E. ~- N x4 y3 z5 r _
- ctx.setDebugInfo("rt" ,Date.now() - ti);( l& Q. R1 f" d( h, f1 L
- ctx.setDebugInfo("k", k); r" G3 O2 P: S6 V9 w5 n$ J
- ctx.setDebugInfo("sm", kk);. ^3 O0 i+ s* `4 q
- rt = Date.now() - ti;$ E% H9 k& g2 c% c R
- Thread.sleep(ck(rt - 1000 / fps));: ?0 _9 C! P- s5 v M
- ctx.setDebugInfo("error", 0)
+ J/ z1 C5 @. p# v - } catch (e) {
2 {% G z% P7 R3 N: M$ h$ g - ctx.setDebugInfo("error", e);/ ^- b; j ~+ S; [* q
- }
0 j- J/ f7 V4 R" k - }
3 S1 Y8 w' w8 i4 x; g - print("Thread end:" + id);& ]9 [0 {+ y7 n2 T: s) j% S' a& A9 k
- }
5 I2 j7 v2 O* I6 a: O - let th = new Thread(run, "qiehuan");
( T3 F% h7 M" o7 `. k7 j - th.start();
1 l+ S# `2 @# @: d$ S0 @1 V - }
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- function render(ctx, state, entity) {) N2 `8 ?+ w' b4 g: o; h5 P
- state.f.tick();5 f4 Y4 Z* W) E. [
- }% d! y D, S5 }8 ^
: H- C4 u9 _3 O% ^( K- function dispose(ctx, state, entity) {
3 f& e/ x( E. p& U( Q# k) r' f, b - print("Dispose");$ Y1 c! I* W+ o
- state.running = false;
/ g/ b. P% h2 ^ A9 v - state.f.close();9 J# y5 }% n3 W
- }
# l3 e; w6 P* }0 |0 `+ W - 0 F! p$ Y9 W9 ~/ \1 S- x! Q3 s
- function setComp(g, value) {
0 Q) b( `; K" X3 f- t7 H+ B - g.setComposite(AlphaComposite.SrcOver.derive(value));
% ^; L+ r7 E! t% A* f3 {2 S - }
复制代码
. C* d: [) t: V: i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。6 A( p/ s7 A; Q" I9 h. E
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3 S0 V* s" L1 w6 o1 Q0 o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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