|
|
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
×
5 a& b, ]! I/ S! p- [1 X
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 l; t7 Z; J# L$ e; g- p" ~- E- importPackage (java.lang);9 o4 @5 w: z1 @3 a* t
- importPackage (java.awt); t' l& z. ]+ z$ p
! ?9 [$ z* `. M- include(Resources.id("mtrsteamloco:library/code/face.js"));2 K; u$ X0 ]+ ~8 ?- S( j
. m) H3 y8 g, K4 x- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);0 R; L( m/ N) @$ A$ J
' r2 ]$ x9 D( l* h0 N4 c0 S- function getW(str, font) {/ ~& [8 z9 s* z5 L+ P
- let frc = Resources.getFontRenderContext();2 }- ~1 P/ C- h4 \
- bounds = font.getStringBounds(str, frc);
+ N8 e- S+ i2 h0 l4 H3 i$ W - return Math.ceil(bounds.getWidth());: j5 z5 O. {, j
- }: W2 f. Z: \+ b: c! v5 F
5 Y- t. ~- C9 t- da = (g) => {//底图绘制, z( Y/ R" G# C0 V, o$ s9 D' ~; i! a
- g.setColor(Color.BLACK);! s1 S5 v% n) r3 s/ N4 P+ s8 n' ^
- g.fillRect(0, 0, 400, 400);" J$ \' S9 x% j0 q3 B( R
- }
7 }" A; I, O# ], t, Z
6 M/ k7 f- S& R8 z- db = (g) => {//上层绘制 b { x# F+ L5 R
- g.setColor(Color.WHITE);
/ L/ n" d; n& ]) S$ M; ?4 M - g.fillRect(0, 0, 400, 400);
* Z K4 Z1 z4 j' A - g.setColor(Color.RED);, u6 A+ n( W6 R4 {: D9 W: t5 G
- g.setFont(font0);9 B1 [! @% F. _" P) X
- let str = "晴纱是男娘";2 f8 B' q+ I( ~( t, W, e# v. _
- let ww = 400;7 g5 t9 d; K3 B
- let w = getW(str, font0);
+ ?; \) M9 p! b+ y. |( }3 o - g.drawString(str, ww / 2 - w / 2, 200);
" q# K$ Z# Q' ~+ z0 I - }
9 U {0 P- B/ \% W
5 O+ j' |) \! E- B+ i- const mat = new Matrices();
2 X& z7 Q* r# q) k$ y" U( V - mat.translate(0, 0.5, 0);
9 f; I$ D- W. C) E/ {) F* }
7 B" g) V; ?5 u: @$ S- function create(ctx, state, entity) {
. L% t; x0 l- z5 W2 d; R! n - let info = {, r$ _# n8 O3 L
- ctx: ctx,
: z7 w% D) n h: u/ }5 k - isTrain: false,+ y7 } x/ G: B; h2 D$ z
- matrices: [mat],
. C$ L) k5 ]$ u) Z( g7 v2 K - texture: [400, 400],
. |: `2 T% k7 y" @2 }, [ - model: {$ C& W: N0 \% H7 R' R' J
- renderType: "light",
3 B& d0 d, Z+ Y: B5 s) p4 @0 V5 x - size: [1, 1],' A- L/ L+ w Q
- uvSize: [1, 1]0 O0 }, k/ m% C$ j
- }! `& @: W l! N0 o6 X" c
- }
$ N: a n! x3 a( m2 v2 u, z - let f = new Face(info);
7 o* z3 D( m; A, ~- H) c( q - state.f = f;2 e2 t1 r( t0 @7 _
- 7 S& G8 \2 G/ ]( S
- let t = f.texture;. [9 r7 [1 i! u) L3 |! c' Y. C
- let g = t.graphics;) @6 d- y( Q T0 c) h& M& H
- state.running = true;' }# Z# p# M" m! f2 {1 t
- let fps = 24;( w' l% j" j! [7 r( |1 ^
- da(g);//绘制底图
: i0 j' _$ L5 y: k; v1 G; I% U - t.upload();
8 N6 X& ^1 F6 p- n& M" u5 t8 p( I0 ~ - let k = 0;2 G! q2 g. p. ~$ }1 g; f
- let ti = Date.now();
! e8 V+ {: Q0 R+ F" } - let rt = 0;# t! M$ C2 b! d! q6 N- [4 l' t5 H' ^
- smooth = (k, v) => {// 平滑变化( W; x1 q* K5 B3 T2 e! w0 \6 K/ h
- if (v > k) return k;0 u0 V. P2 T( z5 x5 l
- if (k < 0) return 0;+ Z# s: v4 f+ c, o; l" v5 k
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;* K2 w) ]$ f9 ]# h0 E/ g
- }) P0 A; s4 j. U8 N6 U" ~7 u
- run = () => {// 新线程0 S) O$ A& l3 D; c* F
- let id = Thread.currentThread().getId();
2 N# t. N& A8 u! s( J( A - print("Thread start:" + id);" b3 Y) A# {% t
- while (state.running) {# @6 \$ V. i9 J" J1 n
- try {
! [% w0 ^ j) {- x9 a7 u7 e - k += (Date.now() - ti) / 1000 * 0.2;
8 j# A: `) K8 B5 h: k0 ~3 n$ Z3 b - ti = Date.now();
7 e! N# c( T. k$ f" j* E, b$ Y - if (k > 1.5) {
1 l5 y' `5 ]/ U- j5 c% o - k = 0;# a' G/ R" K6 Z4 P* O
- }% N. j! ^. f" u# h/ m+ B" z
- setComp(g, 1);
/ W9 l |2 Z' H - da(g);5 z/ L- }& X3 S
- let kk = smooth(1, k);//平滑切换透明度: n) G; y" P0 r4 x, y3 b5 j
- setComp(g, kk);
0 Y0 u8 X9 O# M: g/ v( Z - db(g);
$ k2 x5 `% u0 B% d - t.upload();1 U- `7 b' u# y& M# R; t g& n
- ctx.setDebugInfo("rt" ,Date.now() - ti);
7 h: e2 T, C, y$ V - ctx.setDebugInfo("k", k);
# W8 o" \8 W/ u h" K% P/ V" `) G - ctx.setDebugInfo("sm", kk);3 a8 s& j# I$ l8 {2 l
- rt = Date.now() - ti;
/ q$ k! H6 L3 ~" X/ W - Thread.sleep(ck(rt - 1000 / fps));
% m" f. C- d+ f1 g - ctx.setDebugInfo("error", 0)
e8 C4 B" @" d4 F2 S3 E - } catch (e) {$ N% R" s3 m1 R, Y% c. D7 F3 O5 n
- ctx.setDebugInfo("error", e);" B+ c# C/ p8 k1 q/ r) D3 r
- }7 L1 I' ^5 M) E
- }3 Q/ b* P) @3 ~
- print("Thread end:" + id);
: B$ s7 E3 j4 `8 k4 S - }( p1 J3 b; i5 s; i% C) [
- let th = new Thread(run, "qiehuan"); I, v/ V( F- c4 u% M9 m7 Y
- th.start();$ ~5 e- G4 a$ x5 e+ r2 f
- }9 C( z( r/ A; ]! a _
5 D1 m/ Y: O2 L/ v* ~! }! A, @- function render(ctx, state, entity) {
- x: Z2 m2 d; N7 c - state.f.tick();
5 y% N z V3 N1 e9 x - }: S1 e: V4 L2 L8 B) M( I6 y' p
: ~5 k( }% d$ K% R: _- function dispose(ctx, state, entity) {
. G& }6 e' N9 Z) L7 | - print("Dispose");
6 ?' N* @) h6 N) w# R - state.running = false;5 ^9 w' G8 N% }4 N. E2 s2 E1 K
- state.f.close();
$ O! ~( P) k7 V' g D) B - }, `/ n4 m3 E0 S0 n8 A" ~6 B
- - M8 e/ J1 {) w7 l
- function setComp(g, value) {9 a( t2 J5 e+ @+ u% v
- g.setComposite(AlphaComposite.SrcOver.derive(value));
6 e8 E! P. m3 C' ? - }
复制代码 8 ]* P3 J @( u. S1 o9 ]7 K3 s+ Z8 p
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。9 ]* }) X5 [+ r( H
% C" O- z- T" k: k
3 N& c9 I2 p: ?, d+ P顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)( x) f, G% i" z d0 e0 r
|
|