|
|
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
×
2 a3 F% v3 _. I; [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。
4 x) [) u0 j$ |) P- importPackage (java.lang);, \, ^) c: u5 n2 y
- importPackage (java.awt);
' f0 J. X' T" t/ B+ V
3 n C' ]" o1 v: X' Z" t% ~1 P/ z- include(Resources.id("mtrsteamloco:library/code/face.js"));" n4 G0 ?3 q! f8 `" Y' s0 r
- 0 g; g" g' p. W: h3 R* A) Z
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
, q+ T- ~/ j) e# n( m: [2 S
6 k4 Z o" k* |; k# W2 c/ s- function getW(str, font) {
) h H, X/ R3 K2 X: b0 @ - let frc = Resources.getFontRenderContext();
" ~; T: ~2 h% R1 R% | - bounds = font.getStringBounds(str, frc);( E/ a1 X! k; b2 W. g- O# q
- return Math.ceil(bounds.getWidth());
% m$ ^; @5 ^% U: q {+ X - }' v% S1 _1 H0 _; ~
- ( I; R4 ~( {8 f9 [
- da = (g) => {//底图绘制8 [1 t! J8 m, n! E# @3 T7 A
- g.setColor(Color.BLACK);; t1 J+ r( M, Y. u5 O4 v9 Q
- g.fillRect(0, 0, 400, 400);
6 a9 R& E: e) @- f& z - }
) C5 ?# x- B+ M2 F' i
3 l+ S+ b5 m+ v: d1 j2 P! Y- db = (g) => {//上层绘制
7 z ?9 {& E( T7 \% r* m5 m4 Z) p - g.setColor(Color.WHITE);
% \% j) z4 O Y% T - g.fillRect(0, 0, 400, 400);# h& B, k8 U& a/ m' P
- g.setColor(Color.RED);' j2 {, T& }0 K! o# ]3 r( }5 U* I3 [
- g.setFont(font0);
" U: c, r( W% o9 x, d# h - let str = "晴纱是男娘";
* x2 }1 w+ i; R! m' |* w5 Y - let ww = 400;
2 j3 g9 O) ~/ O) [+ {; ? - let w = getW(str, font0);
% q+ Q7 N* S8 e" F2 @) x( E - g.drawString(str, ww / 2 - w / 2, 200);
$ ?7 j8 k% B8 m6 Z3 g. u) c - }* |- s: T7 `# g" K
- + ]$ s1 S5 l/ w# I- t2 G+ I
- const mat = new Matrices();/ N: J+ b9 o& M. T7 y+ N2 Z1 V
- mat.translate(0, 0.5, 0);5 [2 S+ J% J( A# r. k
) U- p3 g& \" |) y- function create(ctx, state, entity) {
7 L0 q8 y. v* t, D3 K* l& l - let info = {
7 u3 B$ w. j8 P* \5 S* t - ctx: ctx,
' Y, L) c- a2 p. R8 m - isTrain: false,
/ m+ l; c1 w* X8 _2 d, p( I, ? - matrices: [mat],
4 }$ m3 f# b# N# v; h" h H. I4 u, o - texture: [400, 400],
/ u" u4 x+ a6 l, b$ N( i: d - model: {
8 u4 D$ j7 Z ~7 P2 U' T1 G! V - renderType: "light",
& k. r5 X) X4 u4 F( ]0 J1 t" }. Z - size: [1, 1],8 ^+ c, z# M9 r0 b
- uvSize: [1, 1]
- a& c% s5 c. e' B - }4 a9 b* d: |6 ~! b! L1 T1 X$ B
- }
; t, `% G+ G1 M3 S4 j1 a9 y# m- o - let f = new Face(info);
/ W! h0 k( y4 l# _0 } - state.f = f; j4 @% f7 ]+ I o7 ]
/ Q' W6 a" ~. z: P Y2 `( m- let t = f.texture;# y, ~( N+ V5 y9 u& V
- let g = t.graphics;
+ k0 L+ k0 C/ } | - state.running = true;/ p5 M- O# Q1 p
- let fps = 24;' [9 |" W) L9 V* K' H
- da(g);//绘制底图
; ]3 _. Q: ~; v1 j) `7 B - t.upload();6 S- Q) e; G$ i# @
- let k = 0;% u/ y9 u& w5 j
- let ti = Date.now();
7 b6 b- Y% O9 f' W - let rt = 0;
# {6 P) c% [6 n P& U% ^ - smooth = (k, v) => {// 平滑变化
4 D3 \9 z( R9 k! P. C - if (v > k) return k;: \% l! Y8 w9 d8 {+ T! K% I
- if (k < 0) return 0;4 S3 V) t' w" X+ c
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
3 H4 S: [( s' J8 `& P B - }
1 X0 ~4 I9 D) z9 k+ U$ e" p; {' w - run = () => {// 新线程
# M, x3 t$ V6 T$ |2 O# F - let id = Thread.currentThread().getId();+ Z. w w: o8 R- ]( N
- print("Thread start:" + id);
9 K4 C2 ]0 p) F6 B& @) M! O - while (state.running) {
( a) V$ r1 ^; } - try {& y# u8 x: ? O! m5 i2 l
- k += (Date.now() - ti) / 1000 * 0.2;
0 k/ {7 ?) B+ j8 J$ L) J' F+ Z - ti = Date.now();5 ]; c- K8 F" c1 i# [0 O
- if (k > 1.5) {4 x! n* w! X, u8 U2 ~
- k = 0;
2 m7 |% x& K8 W h/ C - }3 Z' h7 N3 N& u$ Q
- setComp(g, 1);; N0 ]/ a. J- a
- da(g);
- ~0 }4 t& v* j$ u6 Q! A0 f& l - let kk = smooth(1, k);//平滑切换透明度
( V( H5 _% D$ U8 z# i ^8 q- w+ X - setComp(g, kk);
1 X/ r1 V: x6 R - db(g);
/ r6 D1 ~6 ^# V t$ R - t.upload();
0 m, ]1 T( e8 W5 H/ G - ctx.setDebugInfo("rt" ,Date.now() - ti);( }" p% w- Y: M- F
- ctx.setDebugInfo("k", k);
" h0 r. O( n: { @" a2 Q& e/ x" Y - ctx.setDebugInfo("sm", kk);$ h1 p$ h, k! ^0 i
- rt = Date.now() - ti;( _; @0 U9 c. J( F$ F: z
- Thread.sleep(ck(rt - 1000 / fps));* {4 o2 J) `2 ^' `
- ctx.setDebugInfo("error", 0)
5 c( e1 n+ a( `/ X$ n! d - } catch (e) {
" q. J) }4 u" i% l/ o. \ - ctx.setDebugInfo("error", e);# P+ g5 h: _% h& I
- }
" ^! I. O' |1 g+ ^4 r, J: @$ Q- e - }! U' [& R$ m& m( M
- print("Thread end:" + id);' E0 E0 |! R8 m# U! c& e2 ]
- }
+ W* S( R( \2 B8 E5 v( d0 ]3 Z - let th = new Thread(run, "qiehuan");
8 M, r* |5 Z# B - th.start();
8 m. d: j3 q8 a) i8 _+ u- E - }4 U" _1 S/ L& y f7 ^( e! V: G
& @4 A9 h8 l' k9 L# a- function render(ctx, state, entity) {
4 F( {. o# U6 C/ A5 b% Y$ @ - state.f.tick();
$ E2 |5 d: C, D$ _ `- M2 T( I. s - }
# G9 c z* X) R7 B& A+ b - 1 K2 Y+ r4 [: d# w# ~ n
- function dispose(ctx, state, entity) {
: W0 h9 m, [; D3 Y - print("Dispose");
! Z4 N! X0 X: a# y7 c% j) J - state.running = false;& t X6 P; p( e( Z
- state.f.close();2 Z% C% ^# k" Q+ Z! [6 `
- }# s8 _! U0 [. u( k
- 3 t7 w1 {) S( e3 ?. |, x
- function setComp(g, value) {( g& H% t. E9 L$ n7 B- E
- g.setComposite(AlphaComposite.SrcOver.derive(value));2 O3 q4 f. Z* A( g& `3 u" f! O
- }
复制代码 $ d* m9 M( p" v; v) P0 A' j" G% ]' ]
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。
0 ]4 K; w1 J3 `8 o0 ~, z' d
# `, Q6 z) T2 z- k/ H N" g T) g- H5 I1 P8 X& v1 O
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
& @, n7 ?! C7 P1 C6 N |
|