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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。
1 f7 t% a9 K; t k& l. ~8 ?& i7 x- importPackage (java.lang);
5 Y/ \7 ^0 z( d# ?! M - importPackage (java.awt);
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1 K; t$ B% {' _0 s- include(Resources.id("mtrsteamloco:library/code/face.js"));
t+ h/ X; H8 M' t# G4 n3 v; h - 9 p) w% ~+ n/ W O* T# l( }
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
" i& Z w# W+ u! n' v - 6 [1 R$ X$ [! J# T5 m& h
- function getW(str, font) {
2 ]% o$ I. T( V" l - let frc = Resources.getFontRenderContext();
) ]! i2 d5 i6 t- z5 H) H1 a - bounds = font.getStringBounds(str, frc);
# x- ^7 r; E" |" n0 h9 L7 u( i, C - return Math.ceil(bounds.getWidth());# U" M4 p4 e4 U4 i, T
- }" k& T7 ~- ~# Y; V
+ M9 J) Z' @; g! L- da = (g) => {//底图绘制
: {5 ^* N' N, c& g+ q: z - g.setColor(Color.BLACK);
# n5 `+ m- }- n, T& e - g.fillRect(0, 0, 400, 400);
5 W2 P0 e6 @; T, W9 s - }
- a9 a8 D& `% j$ c- Y+ T9 }/ G8 I
{& s4 x" P* k# Y: X. c- db = (g) => {//上层绘制
( N3 |6 f: l4 q6 z; `7 W. U4 w* i - g.setColor(Color.WHITE);/ a( `/ D' v1 z9 Y3 l
- g.fillRect(0, 0, 400, 400);4 K5 C; Z' Q( h# @
- g.setColor(Color.RED);2 W o e# k" r/ J3 r' R$ t5 j+ x
- g.setFont(font0);& }/ a6 i& f- w- ]3 d/ o
- let str = "晴纱是男娘";* z' e$ l0 C6 x' K
- let ww = 400;
0 w6 d/ y& l9 Q5 e" j7 O& V+ {3 l - let w = getW(str, font0);# Z9 Y. T; \ I; J4 q9 D
- g.drawString(str, ww / 2 - w / 2, 200);1 M8 C; _2 h4 v( Z9 O
- }
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+ n4 l2 P( S5 d- const mat = new Matrices();& w( Z( Z3 Y' H6 R/ t
- mat.translate(0, 0.5, 0);
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- function create(ctx, state, entity) {& u/ ~ u4 y0 M6 v
- let info = {+ F+ F4 ]" f: {( {
- ctx: ctx,
. n1 R% y( X+ T2 O# N - isTrain: false,0 P2 l& Q4 J* }2 t. Z" }) [# D
- matrices: [mat],. V" U3 ]& p3 a8 V. j
- texture: [400, 400],
6 e+ Y( ^: z3 e) g X - model: {
r- W* G4 B( X5 k3 G- i - renderType: "light",
2 m* ?7 q7 g. l6 B% O - size: [1, 1],
* P, t3 ]8 e `/ k& n - uvSize: [1, 1], ~( Z4 _" ~0 X9 G: W1 d
- }) L" u: {! @ v: J& Y
- }
$ z3 z, `6 c$ |8 u* ~ - let f = new Face(info);
" g. x% u, c% o/ V, P: R8 d, O - state.f = f;4 ^- x7 R# i% s- ~6 s( M' L5 k3 o
% |) I0 g" v; I( u6 c- let t = f.texture;7 h% q5 r9 j, T9 D# o: }" @3 n2 E, e5 j
- let g = t.graphics;
7 c0 {: W' j0 }5 V1 h2 x - state.running = true;
" u2 r' X3 s1 O- m - let fps = 24;
1 c2 n* W! E3 k - da(g);//绘制底图
, d5 a0 F2 b) ?1 {9 @2 I) l6 x - t.upload();! B% B* [2 }9 ~6 j6 y p" ~4 ]7 i5 ^
- let k = 0;
& Z& c( f$ v( L, S - let ti = Date.now();! {/ w; V$ K1 {: x
- let rt = 0;
! j" o- e/ t# c- { - smooth = (k, v) => {// 平滑变化. f9 F' {6 j: @! P! R
- if (v > k) return k;/ p2 O- c) Z3 z$ w
- if (k < 0) return 0;; G4 j+ n9 N8 v& i5 k8 {6 D
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;+ Q* F$ {2 t' p
- }
4 @: ?& j) w d2 ~) a3 @2 n2 d0 p - run = () => {// 新线程% j, {! b8 T4 N0 g$ O y
- let id = Thread.currentThread().getId();
1 o4 Z' Z4 Q5 s: w - print("Thread start:" + id);' T- n8 M# ?9 i
- while (state.running) {
; v+ k3 J+ ?# t! S1 T - try {
, P" C, v6 E- v. b9 S9 H( z, N- \ - k += (Date.now() - ti) / 1000 * 0.2;! H# C, {% M' s9 ~
- ti = Date.now();
- Z5 t2 a6 r1 Z! ?+ H* i - if (k > 1.5) {. ~! E% A' i7 J/ \
- k = 0;
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- setComp(g, 1);
% I& c& ?/ c2 }0 C4 R - da(g);2 `! T+ \3 s7 Z8 ]( U" O! p
- let kk = smooth(1, k);//平滑切换透明度0 g3 f' R3 s0 E: W; o
- setComp(g, kk);' @ J: k; z5 m: ~+ E. C
- db(g);) h8 i2 ~; z# U4 r+ B
- t.upload();: ?" g1 S8 b! p; E, I
- ctx.setDebugInfo("rt" ,Date.now() - ti);. _" q' ?5 B: u9 n8 ^0 C2 a0 P
- ctx.setDebugInfo("k", k);
8 V7 i& A/ c8 ~+ U2 E+ I - ctx.setDebugInfo("sm", kk);
* O, y& C; d/ x, w+ o% _! A - rt = Date.now() - ti;) I2 ~+ M3 M0 [3 I6 P! s) J o$ P6 g
- Thread.sleep(ck(rt - 1000 / fps));
! F3 d. b! O3 W) ?. S! d - ctx.setDebugInfo("error", 0)6 s" \7 i$ u* z4 b2 y% a
- } catch (e) {7 L/ W# u& Y7 Q% k1 e
- ctx.setDebugInfo("error", e);2 L3 V$ m, m' x7 }" W P8 r% Q
- }
: F9 w) S- b4 K' F- T$ l* v, H+ i - }
: N! m" _# r& k5 a9 n - print("Thread end:" + id);* h5 V# q5 Z0 r' R8 I) J
- }% \! D& m1 E1 L2 Z
- let th = new Thread(run, "qiehuan");
: k ~) n! L4 O1 O8 W! Y - th.start();6 f/ \6 Q! E& }' p }
- }
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- function render(ctx, state, entity) {
3 B5 U _$ u7 C. h6 c - state.f.tick();+ Q4 S/ W3 x) H3 b1 {1 |
- }
6 s" s; |# h: H" ?7 z
4 N0 { I B( ^ F& x- function dispose(ctx, state, entity) {" w8 `: g# _8 L
- print("Dispose");, z5 i& X9 z4 v
- state.running = false;- X& b& K! A, ?3 |. |; p6 r
- state.f.close();& o4 y7 y4 k. Q$ {) r3 v+ B! {
- }5 a! ^# q9 n4 r) i
- : L' G. x' b. P) F
- function setComp(g, value) {" {. J# k# o9 i4 x- V6 _0 k
- g.setComposite(AlphaComposite.SrcOver.derive(value));2 P8 x# ~5 b; C; G6 a
- }
复制代码 - H- r9 L' j; g$ v- B
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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4 {5 \9 z/ L# \0 @) a- H$ j, V顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)7 L6 d% d( K7 }- V
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