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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。: O- K$ Y, ] ^$ W
- importPackage (java.lang);! M+ V1 {8 O8 l! p m x X7 S
- importPackage (java.awt);
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2 x/ E7 ]3 [; g- v* Q% c- include(Resources.id("mtrsteamloco:library/code/face.js"));
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$ v. D' F7 I) I/ o- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);" p3 D7 ^+ z* `
! u" N# G3 I0 V- function getW(str, font) {
2 g( A' R/ |! R( f% @ - let frc = Resources.getFontRenderContext();
- f& I9 v9 d$ g! d - bounds = font.getStringBounds(str, frc);/ c' c8 m. J3 y: |
- return Math.ceil(bounds.getWidth());! y& X |1 c: r$ {" P) e# V
- }
4 B" `2 @" ?( C$ E! F2 u% b - * U6 `2 s3 X& v+ ^) ?; k! `
- da = (g) => {//底图绘制
/ c9 @& h6 g4 Z. N) [/ U - g.setColor(Color.BLACK);/ b" F( g# X2 D0 ~
- g.fillRect(0, 0, 400, 400);
/ o( Q I! [) r. L1 U' N2 [: ? - }
# }! U: z; |! W
* R8 ]' c( C' S- db = (g) => {//上层绘制
" k; O |% d: c# R1 o - g.setColor(Color.WHITE);
$ u: j! b( B( d8 A: J6 N - g.fillRect(0, 0, 400, 400);
4 @- w3 C" G4 W! f+ V P! D( M - g.setColor(Color.RED);
* \$ n* I% |4 y0 i - g.setFont(font0);
! Q, ]6 W1 Y6 W* w, Y - let str = "晴纱是男娘";5 ^ g8 w% g! u4 h
- let ww = 400;+ o- q8 Q' _" x- R/ G$ b
- let w = getW(str, font0);
+ t t) D/ N2 I# t# E& Y( E - g.drawString(str, ww / 2 - w / 2, 200);
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+ {7 n0 Q. d% T- const mat = new Matrices();* v. X6 F$ R$ m& `. H! G
- mat.translate(0, 0.5, 0);/ w) u F6 |% v7 r# G9 @6 n) B
5 a' V, O0 ?* W# F) l1 v- function create(ctx, state, entity) {
- O) C& b# i% R4 a, }' V - let info = {
$ A+ b9 U5 c3 r O7 `: c - ctx: ctx,
C& t3 h, q8 c/ b - isTrain: false,
9 u9 Z$ G+ d( Y9 w; i1 x5 @5 O4 S - matrices: [mat],3 V2 r6 i- K3 y" O+ q
- texture: [400, 400],
- Z6 {+ |7 i$ }% b - model: {% u, z, e* D& a* x" X' G+ {
- renderType: "light",
% S' @# E: P1 m. s; h* _6 [ - size: [1, 1],
& T/ S+ _- W+ q& a3 e/ L - uvSize: [1, 1]
6 E# h4 |6 b7 M% L6 z' a- t - }) {. |% j, C4 M& h4 g# |
- }
6 m8 Z( w4 r' c# k4 G# d0 s( S# C - let f = new Face(info);* x/ T1 c5 i# @2 F# b O' D
- state.f = f;
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W& c, a! ~% F/ h3 X. Q8 V2 e- let t = f.texture;
+ q9 C5 U, P ?( q2 X - let g = t.graphics;
6 U [% |9 W z& Q; O+ c2 r - state.running = true;
. x) E K! ~& Y J3 S& p: V - let fps = 24;( o1 r7 I! | |- l- q# _5 Z
- da(g);//绘制底图1 w) r. t! z5 V; \( ^# o" l0 M4 [
- t.upload();' L# a1 V6 h4 d- z. ^% [: O' A
- let k = 0;& g8 u- W+ w# I0 o9 M* L) Y* @6 f
- let ti = Date.now();
' M. e9 N7 \# v2 Z/ u0 B( G - let rt = 0;# G; i$ m* t9 M; d' o
- smooth = (k, v) => {// 平滑变化
3 }, `4 z5 t: k2 S% l9 L8 n: b4 A T - if (v > k) return k;) X0 R. {$ K7 |5 d& p5 W- l8 N
- if (k < 0) return 0;; J& w% ?5 G: J) v( S: Q; i4 E4 A3 q
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
% C* i+ R0 B8 Y9 V, S4 {' T - }* U2 t( R; L& o- j( G
- run = () => {// 新线程
/ D" z3 B& F# _: i, B' E - let id = Thread.currentThread().getId();: J/ e( c9 q. A+ O( o9 v
- print("Thread start:" + id);6 f6 ]* @1 b! a8 o1 x* H/ U
- while (state.running) {* A/ Q. K4 T. E; p9 m& l( ?
- try {
5 E, l! {; O) F4 l, }1 E( R - k += (Date.now() - ti) / 1000 * 0.2;
8 E* ^5 j1 ~6 [0 F9 M - ti = Date.now();8 }* @: ?" B- s; R
- if (k > 1.5) {
* j7 g5 g8 p$ ?4 b - k = 0;; o9 q$ N& q5 W* O0 @3 j% X a" |
- }
, k4 {( V0 C4 H - setComp(g, 1);# R3 B; {; b3 P$ x+ w; n9 G
- da(g);
$ A& I: v, g& @ D - let kk = smooth(1, k);//平滑切换透明度0 i6 {+ B: o9 l5 [) j7 I* E2 p
- setComp(g, kk);2 G3 j2 r$ ~$ n% O: a5 y" c
- db(g);
9 g8 J( ~" U# c - t.upload();) B8 v9 v; j- o3 a
- ctx.setDebugInfo("rt" ,Date.now() - ti);3 t$ b) e! G6 l3 m
- ctx.setDebugInfo("k", k);
! V1 l1 f+ q8 s3 e9 W" l8 { - ctx.setDebugInfo("sm", kk);
& U, d8 S8 l/ m( Q; _ i) W2 U% C - rt = Date.now() - ti;0 q8 v' X3 E5 M# p9 `( d/ D8 T
- Thread.sleep(ck(rt - 1000 / fps));; ~7 t( X1 {# p! f# f- G
- ctx.setDebugInfo("error", 0)
4 e+ e7 w0 S9 I. h; v - } catch (e) {. K8 `( z- `1 J& f
- ctx.setDebugInfo("error", e);
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- }
4 S! ` J, D8 ^8 J, `/ X( A! f1 T - print("Thread end:" + id); `9 f* Y2 l1 X) W; N3 x
- }! @# }0 `& Z, o) r4 X7 C9 U( P2 F# [
- let th = new Thread(run, "qiehuan");
X2 V5 w- {$ M2 g$ o. d - th.start();
$ j3 b- h `* m! _( W - }
: U" I- Z/ g5 Y M8 P. m - - A! g; H& f$ L5 T/ }
- function render(ctx, state, entity) {
0 _3 \0 T6 Q4 I: p - state.f.tick();
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; C) {: W% I/ q" d! P) q- c- function dispose(ctx, state, entity) {
3 d0 ~$ ~/ m: u+ a - print("Dispose");7 j, y% `' t/ d) U X( o8 c
- state.running = false;4 E$ j- l$ P3 J, @+ |
- state.f.close();& \2 h7 a6 e$ B G1 F( U
- }
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- function setComp(g, value) {+ B- [, `5 n0 K: Y# E! t
- g.setComposite(AlphaComposite.SrcOver.derive(value));% P% E" u, v) e+ f6 X+ Y i
- }
复制代码
( S! g5 ~0 @4 X2 X' T. r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。% l: Q+ H+ ]! }
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- W! o6 A0 [. S: G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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