|
|
还没有账号?赶快去注册吧!
您需要 登录 才可以下载或查看,没有账号?立即注册
×
4 y* X$ E, L' v6 T
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。, v. u: H. w% ^5 c6 ^5 U* w
- importPackage (java.lang);: @, }- _$ j. V& h0 G- c8 a" M
- importPackage (java.awt);
J4 [8 a/ G9 ]3 E - ' S' w# Q. y2 P3 o# [! H. v4 h
- include(Resources.id("mtrsteamloco:library/code/face.js"));
* O; Q" X% Y2 a+ \ - " }/ I0 c' Q* ~1 ?) v8 g
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
* s6 x; l; ^7 i# s' V
2 g' n) A8 Z- O; E0 w- function getW(str, font) {
2 v" m; @* O: @2 O - let frc = Resources.getFontRenderContext();
* P8 q% H+ F F" {* G3 n - bounds = font.getStringBounds(str, frc);2 a# a% F j1 L$ v5 D
- return Math.ceil(bounds.getWidth());0 S0 U, {8 p1 Z L! j: `: ]* y
- }
+ J0 Z/ M: J9 a8 o$ n% J9 d
2 A/ C3 y! _& p, O L- A4 R: C6 j; K- da = (g) => {//底图绘制" J$ Q9 T3 {7 }- J2 ^# m, a: L
- g.setColor(Color.BLACK);
, z1 M# G' d' c2 @5 O" ^ - g.fillRect(0, 0, 400, 400);( A, O, E! S" K
- }
" k4 L1 i; A# P N! o& v7 R
! m5 i; V) ]5 @% t- db = (g) => {//上层绘制
, f/ f1 c7 H0 J - g.setColor(Color.WHITE);
9 v6 n% S! _; u# q - g.fillRect(0, 0, 400, 400);
0 J# X4 l% m o" `+ u5 M) M# o* D - g.setColor(Color.RED);2 F& Z4 g n$ J
- g.setFont(font0);
" j6 z3 r* ?* }7 W- B, j. Q: t - let str = "晴纱是男娘";
b. H( A7 D7 A3 I - let ww = 400;
8 q: `# [3 p$ ]; B7 M - let w = getW(str, font0);
; G; ]& ?% l/ @$ U h - g.drawString(str, ww / 2 - w / 2, 200);% e4 M2 u, @9 H G
- }9 G# Y. ~( M1 I) e' e# ]
$ q% `+ u0 w1 t/ Z- const mat = new Matrices();# N& [7 ]8 C! r
- mat.translate(0, 0.5, 0);8 ^1 n. D# i K; Q4 K I
- ; Z3 T1 @7 H' v3 p' H0 H
- function create(ctx, state, entity) {2 \6 Z' e" I9 U0 |7 O' s
- let info = {
9 Y: q9 ^. r$ @3 S1 S- Z' ~, o& ?+ V - ctx: ctx,
6 _$ Q) [4 L3 s' q - isTrain: false,
! F/ b; @7 z4 F/ {) _ - matrices: [mat],
: Y4 [' N3 R8 r3 x! D; ?" V5 x( ? - texture: [400, 400],2 H9 a4 `. X$ w6 A* K
- model: { O& c; o- `' v% y8 l( a ~
- renderType: "light",: R' S3 ?2 p( n1 G; v- a
- size: [1, 1],
& `8 l$ t& M( G) K - uvSize: [1, 1]
. R6 }% c8 v4 ^' b - }$ g& D# l' d# C7 N
- }
- x/ @/ w! B4 F, O, N - let f = new Face(info);; ^! P4 C2 V3 \% _
- state.f = f;, Y, }, o# A# y! _) s- I
- . ] @6 K/ L/ G
- let t = f.texture;
7 w/ ]% a. t1 c# u; o7 h - let g = t.graphics;
2 j8 S3 j/ K5 ?# A7 `" s - state.running = true;8 a% `, c0 H A
- let fps = 24;
7 A1 d$ c% ]1 C/ S* R, J - da(g);//绘制底图
, i8 X, T# D) U. Y7 ` - t.upload();
% E$ `# E7 {" E+ o% o - let k = 0;' o. V# s. { [ ~
- let ti = Date.now();. i' t" l- U. y `! Q, U8 R
- let rt = 0;
: [; R. ]9 |/ ]7 [8 w - smooth = (k, v) => {// 平滑变化( W: W5 G/ U2 k* J. h! }
- if (v > k) return k;7 g1 \3 H4 k2 z# @% m7 V' N
- if (k < 0) return 0;% W0 F- r# B% w
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;- S1 M( u5 R0 A/ ^6 P2 L
- }
+ o% @) I8 e! X% i F - run = () => {// 新线程3 d( M" U: Y8 g. }1 J
- let id = Thread.currentThread().getId();
: Q F% @. A" c, }* q2 _ - print("Thread start:" + id);8 k: E) E6 U/ S2 _/ Y4 u- y
- while (state.running) {4 ~5 c4 f2 K9 _
- try {- }$ o6 x g- p% L: J, s" E
- k += (Date.now() - ti) / 1000 * 0.2;
$ M; @: x* M/ ^ - ti = Date.now();
4 o# m, P- P4 E! U: c# |1 \ - if (k > 1.5) {- Q( ~7 b- w% H9 z. t
- k = 0;
3 F( F1 M* B) s/ X5 G5 ^ - }& y7 I/ b4 v6 Q) I
- setComp(g, 1);0 y6 w1 y$ U* u* _
- da(g);0 A7 E5 H8 r; t, I4 {9 w
- let kk = smooth(1, k);//平滑切换透明度
2 `9 ?2 {) m( `, | - setComp(g, kk);
& x5 |! M/ t _" m - db(g);, [% o$ r* s, V9 v8 N$ t
- t.upload(); o/ Y" B3 l$ {$ m1 }
- ctx.setDebugInfo("rt" ,Date.now() - ti);
4 W/ ?: F% T: ^+ X ?, A - ctx.setDebugInfo("k", k); U# d6 n' V1 i9 `& Z
- ctx.setDebugInfo("sm", kk);9 g& l1 a7 w# m b( P
- rt = Date.now() - ti;
8 e. u! Q/ \" \, h - Thread.sleep(ck(rt - 1000 / fps));
( o2 U6 K% q7 S# {6 s - ctx.setDebugInfo("error", 0)
* B. Z5 a0 H. b, {! T - } catch (e) {# x! G4 L( ]1 N) R; j( p
- ctx.setDebugInfo("error", e);
7 F% W2 L* q( e8 @0 j$ Y ?- M. \ - } |0 U1 ~ P8 P1 b! g4 ~8 K2 b y
- }
6 ?# `- s5 A$ V$ A/ H9 F# t - print("Thread end:" + id);
~# Z1 ~! d4 K% K& E9 X9 Q - }; @" m2 w% _- u- w) g5 C
- let th = new Thread(run, "qiehuan");3 E* x9 O' R# a7 R* W
- th.start();
, | U; x( v& r1 ]% C - }% J; l+ V* g6 K( t& Y
! G8 w$ D9 U) l% ]0 G! b- function render(ctx, state, entity) {/ @1 y W( J) a: T/ I# [: b- `
- state.f.tick();
1 R+ _6 u$ y: X: d8 T- f5 { - }
& P; M Y# G7 F- T$ b
% w6 E, Q) b: B1 O- function dispose(ctx, state, entity) {* G- p; [/ p2 K8 @ {
- print("Dispose");+ ^1 S* x S- L7 k, G5 w. n
- state.running = false;
! ]4 ]- p/ I r' i - state.f.close();. U c! E m& M$ u) V
- }! [3 E, y' V* l$ D8 m
9 h/ Z8 t8 `; O7 \9 U6 z0 X- function setComp(g, value) {
6 q, `8 b5 N2 n2 A1 c1 _ - g.setComposite(AlphaComposite.SrcOver.derive(value));
7 B+ V# X! v0 t1 |$ Q% Q$ h - }
复制代码 ! X1 A0 I9 I! `$ r* S! z
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。
% N3 G9 k. y2 j6 h- k- O
/ ?. k& y. C, ~* B q! ?
9 c& I0 ]* d9 \$ {/ F8 q顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
! u$ ~5 N6 [; T4 B |
|