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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。+ Z' H: K4 s6 r* I; @4 J" z
- importPackage (java.lang);# ]: g: U3 F) P* A" J4 g7 V) h
- importPackage (java.awt);4 D6 Z1 ?& n+ E* J
+ m3 X X G1 w* v% {: V6 ^ i- include(Resources.id("mtrsteamloco:library/code/face.js"));( p4 q) m( z* i, u3 y
1 _" |4 F6 ~6 ~, Y! ]$ O' u- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
) p. W1 F; E# g3 U& I4 {6 m6 v - # U( |7 P. h/ D9 o; g
- function getW(str, font) {9 }0 W, {+ i* ]1 m* o8 Q
- let frc = Resources.getFontRenderContext();& r/ m4 E( _: V
- bounds = font.getStringBounds(str, frc); L& U% v' j9 g4 l6 M; U1 V& t. q
- return Math.ceil(bounds.getWidth());
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6 n( G$ ^6 d1 B6 ~) T1 o& d- da = (g) => {//底图绘制4 W( q, p/ q; @6 b/ G/ @0 ]
- g.setColor(Color.BLACK);
/ T, {7 Z' E$ z7 B: T, d5 J - g.fillRect(0, 0, 400, 400);
. i+ A6 b2 c+ f - }
# T( t0 q' K" b - 0 I0 d5 `2 G( t: o. T% r
- db = (g) => {//上层绘制$ R/ g& z- F- [: a
- g.setColor(Color.WHITE);+ t3 a: x+ h; j- U7 j: E5 f# o
- g.fillRect(0, 0, 400, 400);
: F& o6 Y) i6 c# N& a& H - g.setColor(Color.RED);4 Y4 K) ^7 O. M a$ i [+ Y
- g.setFont(font0);
) S6 t9 Q0 C5 I7 F" o- ?9 D - let str = "晴纱是男娘";" ]6 Q6 Z& T7 z" O$ ^/ Y
- let ww = 400;( \0 a- U3 o7 S& ^4 V3 B1 j
- let w = getW(str, font0);
$ v% ^6 _1 Z7 E( A - g.drawString(str, ww / 2 - w / 2, 200);, F6 i! |1 E0 l7 X! S7 J
- }
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8 r v9 I- t% j. F3 C- const mat = new Matrices();
$ ?' ~' ^! {! l" A/ x - mat.translate(0, 0.5, 0);) V( ]0 {) V! A( [$ w
, K) g( t) @; O5 v; h2 e- function create(ctx, state, entity) {
/ M: _9 @$ @" [3 S - let info = {$ W) }9 i) @% o* f
- ctx: ctx,( C4 a/ l& c2 M! N, s
- isTrain: false,
- j. c/ R8 o+ s# z( s L - matrices: [mat],
1 m% ?. T C) E3 ^) }2 V. w - texture: [400, 400],6 i# M9 M* L4 b$ ]- H
- model: {
. t4 K8 v, ^( I w2 l3 s" U2 S - renderType: "light",
" Q/ m& Y0 P; V; f8 Y8 t2 t - size: [1, 1],4 `# B/ J+ e# [% C
- uvSize: [1, 1]) [% b Z, @9 ?! d0 o
- }
& x( D' L/ g$ S; E - }
$ T$ {* c# a; {$ ` - let f = new Face(info);
/ W9 B. N$ w+ F! ]9 P9 b - state.f = f;! |* R0 {/ i% u
$ [0 r- i- X5 `- let t = f.texture;
x4 G3 A7 d* [) |" H$ P' g - let g = t.graphics;
}% Y/ U; o' q7 d# y; Q" u - state.running = true;
9 z4 c0 [# K1 O8 d* E m - let fps = 24;9 q* v3 j) `. N4 r
- da(g);//绘制底图
. B8 v/ k- f( u6 T# u `- l - t.upload();
4 b) F$ g+ |9 P; ?" @& G+ {- g" d - let k = 0;
1 f" q0 @) H) } - let ti = Date.now();
8 ?8 N- U! }9 D w9 b - let rt = 0;
4 ~- i1 J9 o/ J; C. h: P* o" U - smooth = (k, v) => {// 平滑变化3 b, K5 k8 e$ Z0 U
- if (v > k) return k; `. M0 u) ]7 B9 K2 V8 a" L3 Y
- if (k < 0) return 0;, D* n) w. |6 v/ A: B# V
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
- P9 Q4 e) \8 w( v - }/ k0 a: N# M8 N5 Q- f
- run = () => {// 新线程; }6 R( _1 S! O2 _" P
- let id = Thread.currentThread().getId(); s' y' s2 @4 w' L; D, @* p
- print("Thread start:" + id);
# S- j9 M4 H+ q4 B0 W4 t2 q! w$ E - while (state.running) {
0 n/ ^/ v: ^( P! F f0 s, ~0 E4 H" D - try {
$ g, H K6 ~. O. J1 x$ C# | - k += (Date.now() - ti) / 1000 * 0.2;
( i1 z" W( l; [( N3 p - ti = Date.now();$ F# q/ j( s& {: J
- if (k > 1.5) {( e* t1 @, d$ f
- k = 0;! q4 ^4 j: g7 Z5 @: t' r
- }3 Y v# [0 W* |$ i3 y7 D
- setComp(g, 1);
$ e' ]1 F' d2 X$ U/ s - da(g);: i0 U5 ]; f4 ~$ I, t( t
- let kk = smooth(1, k);//平滑切换透明度0 B r, `" o$ b( m1 K6 h U/ J
- setComp(g, kk);
& I4 y3 ?/ B( J6 B+ y1 [& O& s+ n0 w - db(g);
* p* {& B, C3 N B6 L - t.upload();- i. M+ Q% i2 ^# j
- ctx.setDebugInfo("rt" ,Date.now() - ti);
; {" K( M3 D0 ]. f+ l$ q ] - ctx.setDebugInfo("k", k);
( ?! n/ G# G7 @9 `! a - ctx.setDebugInfo("sm", kk);
1 E# i! A' h# `5 z' B' L - rt = Date.now() - ti;
7 H' H1 c y. ^1 F) t: |( ], w - Thread.sleep(ck(rt - 1000 / fps));
4 Q) O& U: l7 N I1 W - ctx.setDebugInfo("error", 0). C- f/ Q4 p3 S4 G
- } catch (e) {% A, p: i+ [. X7 G5 `" {
- ctx.setDebugInfo("error", e);
: F) N$ M: `3 S - }
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- print("Thread end:" + id);
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- let th = new Thread(run, "qiehuan");, S8 E+ s0 a! A2 s7 \& o
- th.start();
" b9 R6 t7 A. L% g' m - }
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- function render(ctx, state, entity) {8 |0 C2 J+ h6 G( S
- state.f.tick();. ~! x( F7 {1 t X$ x& `4 p, [
- }
8 E7 @5 K$ m5 n1 p+ |8 f7 h
" i. p$ L& T. e6 y- function dispose(ctx, state, entity) {3 R5 Z8 B1 g Z& [0 J& J
- print("Dispose");4 B5 y4 n( c3 o: {0 a, B
- state.running = false;7 k9 n5 t$ H+ o% Y5 \8 Q1 m
- state.f.close();
& D# Z; u0 B- ^6 T5 I Q - }( i* J, I6 f& z3 ^( E! K% o' q+ _
- z x' ]4 s% R; e' L/ `- function setComp(g, value) { R# k8 z2 V+ O* J5 @: v H; i! b- G
- g.setComposite(AlphaComposite.SrcOver.derive(value));
6 ]5 t4 D8 V# Y* M - }
复制代码
$ ^7 ^( ]4 J y3 s' [0 H5 p9 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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9 J8 Z8 r/ O5 t2 Q1 R% u3 _7 g0 O3 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)( m. ?9 m. L9 Z! t3 c) j
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