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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。8 y9 `9 ]2 _# i0 a3 B& E
- importPackage (java.lang);
/ h, S8 o' H6 }# d1 R - importPackage (java.awt);
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! s1 T/ I: w( D% B- include(Resources.id("mtrsteamloco:library/code/face.js"));
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- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);# f% W5 ~* F8 y- y( g/ k; C! K- j" j
. P) ?2 a. u- {% b0 C e5 y& l- function getW(str, font) {- ^* J; Z, U" L/ S5 R/ S: Z- [: ^
- let frc = Resources.getFontRenderContext(); S; |$ i! M4 R! q! |% g
- bounds = font.getStringBounds(str, frc);
3 E6 T. A' O3 s0 o; A: k( A* c - return Math.ceil(bounds.getWidth());
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- * @4 L# A6 e2 I; {9 A# g" n- a
- da = (g) => {//底图绘制* l6 L/ t; K |+ w$ D, R' Z
- g.setColor(Color.BLACK);
3 _5 v& }% f4 @4 X$ s/ p - g.fillRect(0, 0, 400, 400);2 W9 q0 Y4 ^8 t6 f& W N
- }
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) ?9 N J) }/ \$ B) ~% l- db = (g) => {//上层绘制2 h& `; V0 @0 Y+ D) |
- g.setColor(Color.WHITE);1 ?+ N) u k& k( W0 A
- g.fillRect(0, 0, 400, 400);
+ B0 ^ [! ~1 `& B9 E) A& m - g.setColor(Color.RED);
8 d* Y) U! y0 ^8 x - g.setFont(font0);! R: @! N9 _# }" \, a7 ~
- let str = "晴纱是男娘"; h) {9 ]$ T/ l. Q( g
- let ww = 400;
* s( c5 X& J. m/ D - let w = getW(str, font0);: b9 L8 s& W- A" C( K
- g.drawString(str, ww / 2 - w / 2, 200);
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- const mat = new Matrices();
/ @! ~/ }9 k( D7 F - mat.translate(0, 0.5, 0);2 d7 F8 p; c" L# f) z$ `1 M$ s- M
. h2 @8 W7 t X+ l7 M7 ]9 O0 e* ?- function create(ctx, state, entity) {
# {- z2 F/ W4 X8 f. \* j - let info = {
6 a4 b9 U- M' S) e/ ~ - ctx: ctx,+ f' R* _# w S& ~( P1 a7 A
- isTrain: false,8 l+ f8 U) I8 ]% n9 C! [
- matrices: [mat],
$ U2 n7 B, K* e% a0 V - texture: [400, 400],
% a0 E1 {5 @& L2 S m+ Y3 h1 g0 l% k - model: {
. R- D6 ^0 l5 W2 M) w. y5 l - renderType: "light",
1 X3 F" G1 V6 y& q3 Z - size: [1, 1],
; t/ M5 j. n! `& M7 ] S/ J, ] x - uvSize: [1, 1]
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- }
1 ~2 G5 R" E" k3 ^9 U/ \' ?3 ]: h1 y - let f = new Face(info);
- r: Z+ m" `/ Y7 e# z! p - state.f = f;2 I, `, O" K1 q( t+ ]
1 W# a8 o! C* S! K0 K- let t = f.texture; T! h1 b0 T+ B* ]( _; i
- let g = t.graphics;: L6 }2 }1 v$ y# L
- state.running = true; a' r' I7 m) W0 h! E
- let fps = 24;9 ]; [0 A9 x' D" Z2 N5 o
- da(g);//绘制底图
; ?- ~( P( I4 l- L+ J - t.upload();! u! ^4 ]1 f* W% W o
- let k = 0;
2 `8 l6 ^: h* Z: R0 ]2 X - let ti = Date.now();4 E$ g4 t9 `" ^5 M5 \' E- d
- let rt = 0;
2 V9 t7 V0 q0 V, ~( K - smooth = (k, v) => {// 平滑变化
$ _' a6 M, G! }, W - if (v > k) return k;' O8 H7 u0 \8 D& L' C
- if (k < 0) return 0;
: ^$ f6 @, D7 m/ u; H6 D2 u9 g4 N - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;3 F! T+ a+ Y) D! [! G t
- }; y# c; F( V3 F4 ?0 ]
- run = () => {// 新线程
1 e! V5 }; f& L" J' E0 N( f/ M - let id = Thread.currentThread().getId();$ l& U7 e8 f. \
- print("Thread start:" + id);
: a- l+ L* E% C" ^: K- J8 t - while (state.running) {8 C$ v* [2 i- s2 ^/ A1 ]4 d
- try {
0 Q/ \0 o x7 j# e8 C( K* N - k += (Date.now() - ti) / 1000 * 0.2;; Y' X% s. L4 D1 V. ]; @7 P. R
- ti = Date.now();0 t1 T Y, M! H8 o
- if (k > 1.5) {/ o& d( }: Q5 j0 i, a/ ^$ C! G
- k = 0;* l1 a0 j& M: E, R$ ?! h: }- |2 f0 u
- }
# I( ]1 X6 i+ @8 m8 O& ^/ g6 ^ - setComp(g, 1);3 W" ]9 V" c/ n6 O" t
- da(g);
1 g( e" {$ Q6 ]7 k - let kk = smooth(1, k);//平滑切换透明度" k( v- x) U' x# M0 a" h
- setComp(g, kk);
: o% R% z7 ]0 Z7 A' C* K - db(g);
2 C# D) U) m% N4 `0 Q - t.upload();
9 _! @! s1 u+ Z$ j - ctx.setDebugInfo("rt" ,Date.now() - ti);; }; D, r, ]( c) B& Y+ x- y
- ctx.setDebugInfo("k", k);
- A3 e c7 h7 s0 I$ {& q6 k } - ctx.setDebugInfo("sm", kk);4 i3 I8 {7 g& ~! R
- rt = Date.now() - ti;) D) }+ ^" H# l' w
- Thread.sleep(ck(rt - 1000 / fps));
. K% Y, L. d8 j9 g) l& F - ctx.setDebugInfo("error", 0)
% B% x- }, _; E$ K$ O; g6 W - } catch (e) {
& I( Z$ d: b( X& F3 g) L - ctx.setDebugInfo("error", e);8 E% p* l2 _9 o/ g' K1 }7 _4 k$ t
- }
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- print("Thread end:" + id);
: {3 r1 v: x. _- ~+ i - }
2 M) d$ S' P5 Q( P' i - let th = new Thread(run, "qiehuan");& M7 ?; e: p9 G- V g" L/ u
- th.start();; j Z4 ^; p% v" U+ R: ^7 A
- }
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- function render(ctx, state, entity) {1 g/ }9 y. ^5 R. ^
- state.f.tick();
: [! i! h; x1 r7 v( t: }, U - }
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0 E+ \! |: K- r2 `7 g( `# q1 G- function dispose(ctx, state, entity) {
3 M6 j9 u( ~5 S+ W5 f6 r - print("Dispose");
+ R3 y' K ?: ]$ w! ]( V - state.running = false;! H; x Z) p. [4 X
- state.f.close();. |9 z8 _6 v- _
- }
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- function setComp(g, value) {
8 H4 A/ h' F* _0 f. J% G - g.setComposite(AlphaComposite.SrcOver.derive(value));
2 s* u- X/ {- R% p, ? - }
复制代码
! o2 V* c/ u. j# o' b f5 y* z6 n$ n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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0 \- U+ X5 c( p, [: I r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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