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, q& ~' s' T, y' U5 a! y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。+ V5 c$ u; x5 ~+ s" i3 Z
- importPackage (java.lang); L8 X8 b$ t1 y* q1 L6 N2 s
- importPackage (java.awt);: r) H+ {+ c0 D F3 f/ n. Y) D
8 R+ }) _& L6 w4 ?/ c* \' U ~6 j. Z- l- include(Resources.id("mtrsteamloco:library/code/face.js"));0 m# c( n. F) b M% Z7 I/ \
) D/ X) h% V8 ?( y- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);5 K/ z0 W9 t& G$ \" K5 }, E( d6 R
- 0 x( O$ \# H$ k% T0 Q7 n
- function getW(str, font) {
4 A- u. J# l, {+ E - let frc = Resources.getFontRenderContext();+ t% [9 G- x8 ^) \
- bounds = font.getStringBounds(str, frc);' {" y, G* }9 ]- @3 k
- return Math.ceil(bounds.getWidth());
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- 1 I& { `! S1 ^( n
- da = (g) => {//底图绘制
2 W7 i2 ~' [% S0 K3 c& L - g.setColor(Color.BLACK);5 c! O/ p2 A5 }) `& }4 ?6 p
- g.fillRect(0, 0, 400, 400);+ w8 D& |0 z, L! L' |: m2 y* J
- }
% J: H* s0 b9 E( M, s) D' s( G
) S- r% Q0 U3 M( X/ V1 b4 Z+ u- db = (g) => {//上层绘制5 e3 g! r; K- B
- g.setColor(Color.WHITE);
1 ^; K" @$ G4 N$ W - g.fillRect(0, 0, 400, 400);
0 y+ d, l7 ]! j! D - g.setColor(Color.RED);
0 I1 u" W' P% i1 G, n0 J6 D' C - g.setFont(font0);0 l a+ R7 x, T
- let str = "晴纱是男娘";5 \9 q- R- R4 ^0 r+ k
- let ww = 400;
$ z1 |! B0 ?# A& k- W" Y2 y - let w = getW(str, font0);
' t( D7 ^5 b% ]/ e& ] - g.drawString(str, ww / 2 - w / 2, 200);
9 ^" M& }1 t" a# a - }
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- const mat = new Matrices();
0 ?" k) N, ~+ z& O/ n# @ - mat.translate(0, 0.5, 0);
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0 y0 ^) V& M5 R+ L0 X& i r g' c) r- g- function create(ctx, state, entity) {
" V# }- t, O( i3 [ - let info = {8 m8 q7 O$ z. M& a2 V9 G
- ctx: ctx,
2 @- K$ [3 k5 I# L; [& Z( a - isTrain: false,
+ d/ @" B8 i1 U7 V, _2 u - matrices: [mat],
. I S Z" w& q( G - texture: [400, 400],4 V- c; C7 C3 k9 ?
- model: {' E. T: W% i3 A
- renderType: "light",0 \4 X/ h, p' s
- size: [1, 1],7 U( j% m9 W! |) o" k
- uvSize: [1, 1]
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- }( H4 Q& `( l, l+ e: e
- let f = new Face(info);' W. T2 }; T- S& p+ N
- state.f = f;
) y( T8 s+ J T( i: u" G
2 B0 S, t2 P) q4 f% J8 w- let t = f.texture;, E3 H9 o0 h2 T" t$ u
- let g = t.graphics;
) F/ q0 w4 f7 ]7 C - state.running = true; f) I6 \: m# ?8 |' U) d. \
- let fps = 24;
/ ]7 J- z- }% T( s - da(g);//绘制底图& h4 r! ?8 {8 }1 K% U! {: M1 Q
- t.upload();
y% ~$ L- `+ R& i `! r - let k = 0;
8 a% b/ u9 Y1 y X' R - let ti = Date.now();8 q# b$ k1 E: Y, ~1 J5 E9 \
- let rt = 0;
* d7 N% {6 N" N% k3 f p6 @4 I; T - smooth = (k, v) => {// 平滑变化
% R* P5 C2 g {% l7 H. x - if (v > k) return k;
6 }6 U1 p% D) |; { - if (k < 0) return 0;
1 x' x- C2 M; G3 q. F - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;7 M0 g( w; ^* D2 I7 B0 @
- }, k. H: T# [9 t$ }
- run = () => {// 新线程. Z) j: e) h# _% R7 k" P. t
- let id = Thread.currentThread().getId();0 c8 \# t. f4 [" e" A
- print("Thread start:" + id);1 L y4 \4 J. n
- while (state.running) {/ O7 C/ u0 |0 [& d- J0 L! E0 Q
- try {( D9 o& \2 o) ~" n
- k += (Date.now() - ti) / 1000 * 0.2;
; \* l; [) m8 _; i - ti = Date.now();
, J9 H) y- j$ h1 L! c3 C - if (k > 1.5) {
6 V5 _& W6 x. |7 I6 r/ I - k = 0;
& b p" U8 T7 |1 G7 Y/ i8 D5 f - }, n6 m2 g. J& c6 |8 {. f
- setComp(g, 1);3 \4 T- B7 p1 e! k, R( J
- da(g);, l- U8 h3 S; @
- let kk = smooth(1, k);//平滑切换透明度5 g7 t, |+ h) } `
- setComp(g, kk);
0 n X# x2 o& @/ `0 v6 B - db(g);
+ m$ Y! m( [5 c - t.upload(); Q8 e4 I' j% P% Z5 Y
- ctx.setDebugInfo("rt" ,Date.now() - ti);8 ?; W" i$ J- ~# q) }4 p
- ctx.setDebugInfo("k", k);' U r- C3 m+ S/ [" t
- ctx.setDebugInfo("sm", kk);
8 [5 ^, ?# x3 n: p' `% ^ - rt = Date.now() - ti;
& d4 @+ t2 c5 @) I" t - Thread.sleep(ck(rt - 1000 / fps));) H9 r7 E! S) i6 t/ c% [
- ctx.setDebugInfo("error", 0), {* d2 x6 T: v! k; j1 j
- } catch (e) {
: ~& D1 A( l; }2 o6 Z5 s - ctx.setDebugInfo("error", e);$ X6 y, i0 \5 X9 F
- }
6 f: g [! S. `! |: ^9 h - }0 a6 `. {% L: h$ u
- print("Thread end:" + id);
5 S6 W7 \5 G' O$ I: G) D+ P. Q: U - }' g# s f3 B% N: c3 W
- let th = new Thread(run, "qiehuan"); s9 {: X4 o O5 W6 {! C1 b
- th.start();
& T/ {( B: E' @# b, r4 ` - }$ O0 L0 S: O; K, l
- * S* a0 M/ H/ b' P
- function render(ctx, state, entity) {: U+ b. W. F9 F- l% S' r! I
- state.f.tick();
) e# w4 q" S" h! Y6 e. p2 X - }
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- function dispose(ctx, state, entity) {& D7 g# {% z* q1 M# `0 K) m1 K
- print("Dispose");: o7 c0 }5 n6 U1 Q- O. i% b
- state.running = false;
4 k- P2 _, ?; M: C% J- v - state.f.close();1 \) L# U3 N) e; k3 T1 ?
- }
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- function setComp(g, value) {" L- J* j2 U% y9 \
- g.setComposite(AlphaComposite.SrcOver.derive(value));
7 w; X+ }! k2 \) i8 d% S( V3 \ - }
复制代码 3 c- }, ]5 h# z9 ]* x
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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! U- T. a7 Z* y7 B# L; b: ^" n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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