|
|
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
×
8 g9 P$ p9 C( K0 E8 m( o! 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。0 `) ~9 I: C' `& @2 R
- importPackage (java.lang);
. L% F0 X6 L5 H6 g( a" m! P - importPackage (java.awt);, l6 Y& B- Z1 \' y: l: j( V5 i
- 2 J/ ^& B# \6 A, {. ~& \" }, g( d
- include(Resources.id("mtrsteamloco:library/code/face.js"));
" c0 d* n* t! N# I - 3 W# w" N5 ^" {9 O q
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
' W9 G9 x1 e- j$ {* j1 V$ M0 @ - , W1 Q8 i0 M6 i3 `
- function getW(str, font) {
* D- |/ H( H+ D( V - let frc = Resources.getFontRenderContext();
' I: e6 h' O7 S' ^4 @ - bounds = font.getStringBounds(str, frc);, i; x. n* V% n" F
- return Math.ceil(bounds.getWidth());
3 i5 O; `( L# y( y! N- O - }: f* x) k! K1 t X) b
- T& a. Q. }5 h' a- H- da = (g) => {//底图绘制
5 b$ v |9 g7 R# k$ w - g.setColor(Color.BLACK);! ?; L0 y$ o7 N7 y4 F0 J t9 I# G
- g.fillRect(0, 0, 400, 400);
7 @$ h* ]8 u: A0 ~( r+ w) v - }
: l0 s0 m# M& ]% t, P
5 T: S9 {* X7 q/ | Y$ Z- db = (g) => {//上层绘制
& t, ~, A/ A( L: R8 u4 j5 ? - g.setColor(Color.WHITE);6 y2 d5 D5 U/ \0 K& T7 T _
- g.fillRect(0, 0, 400, 400);1 J0 W) |* z+ b) J( q) W9 v
- g.setColor(Color.RED);& Q1 P+ K2 Q0 Q
- g.setFont(font0);. n" H) v( Z( M+ C) _, d/ g' r
- let str = "晴纱是男娘";
5 G) R o; K0 ^: W7 ~2 `' C - let ww = 400;
+ a1 q; t* g0 w! c! | - let w = getW(str, font0);9 y% N" {. M3 N3 C( e( C
- g.drawString(str, ww / 2 - w / 2, 200);
V6 B3 f; ?( \' `/ {; e/ z( O - }4 z2 F7 W1 \$ K
! {% i7 F0 M- m- const mat = new Matrices();
2 \$ V! k. T( ?2 F3 f. Z0 W( s) T, n - mat.translate(0, 0.5, 0);
: g; i$ r3 z! l# G. j9 S! B/ q
6 \) n3 Y5 q0 ~- function create(ctx, state, entity) {
( F0 f; _+ d. z- I6 G# M - let info = {
! l; M# {) Q3 j8 c. [& Z - ctx: ctx,
9 U* {$ u! I# d! l - isTrain: false,
8 W- W: Z9 s' e, `/ x - matrices: [mat],& o4 }# s6 q) b4 d
- texture: [400, 400],
2 F8 `, W u; t6 ]# r: S1 d - model: {% o) n4 G+ W3 w* v. \
- renderType: "light",! c0 S3 U0 D7 J2 D" ^; I9 Y$ g
- size: [1, 1],0 Y! c; R% I P0 W2 u; U. A6 D
- uvSize: [1, 1]
' h+ e1 s) s& {+ A; Y) W: G - }3 k, \5 Q. W% b! q
- }
! q* }" c' Q1 i+ f) p - let f = new Face(info);! R+ y7 Q2 N9 V& W1 }
- state.f = f;
7 Y* n9 ^/ A! H" y. p' k - 2 ?3 F( N4 g& v3 V: c
- let t = f.texture;8 h! {: W! M1 O$ F8 i! w
- let g = t.graphics;. k0 W0 r3 G- k, G; ]+ }; L$ ^
- state.running = true;4 Z5 I; t+ u" `. p0 j
- let fps = 24;
9 d$ }* v3 F; O, ]# w( g - da(g);//绘制底图) a, j+ `7 P) [) }& ^: ~
- t.upload();
8 P: m# U8 g& h6 t; R i) |( a - let k = 0;! H. b% _+ {9 i) i9 f9 }0 N
- let ti = Date.now();
0 ]4 c) }1 G- P& ]: r - let rt = 0;
/ y% p+ T" L/ }) K - smooth = (k, v) => {// 平滑变化8 i+ L g6 J) ~
- if (v > k) return k;
$ y, E! i$ i% L: o0 R+ ^ - if (k < 0) return 0;& \' F$ ^# n: j. L2 m6 {% X4 m
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;7 ?$ {% s" M$ H7 }
- }) X/ I* ^. j& a! J" L6 w
- run = () => {// 新线程# d& {/ E! b8 W0 p( v8 C
- let id = Thread.currentThread().getId();
' \9 ?7 u( f- i5 Y) D. ^ - print("Thread start:" + id);2 w( Q) n3 z# u2 I
- while (state.running) {
4 A' ]( N; P. h8 B% p9 _ \0 b1 U - try {
H! A" T: w5 X& T$ a2 Q - k += (Date.now() - ti) / 1000 * 0.2;
% ^5 }' _+ q$ d4 G: f - ti = Date.now(); U) w& {7 g. T5 i
- if (k > 1.5) {
4 c+ t: o$ A. w; w - k = 0;
* O3 E, z5 Z; \ s% b - }) _1 S) G+ }& |1 h O3 n9 i8 B% l) o1 Y
- setComp(g, 1);
" q b$ q& }4 i2 ^ - da(g);
7 W5 s8 V: \- K& i& l* c* n: D2 h - let kk = smooth(1, k);//平滑切换透明度" I4 U& G$ M; v! u& a0 `( s4 f
- setComp(g, kk);
* x& W1 ?7 B5 K" q4 e8 [! C - db(g);
' {; G8 s& X. f$ Z7 l5 n - t.upload();6 l3 C/ U6 a( x, D2 x0 ?+ B- P( F+ F
- ctx.setDebugInfo("rt" ,Date.now() - ti);
, a2 h, {9 y# F7 z6 R& _; f - ctx.setDebugInfo("k", k);2 [0 P/ y/ ~1 r: _: l+ d+ O
- ctx.setDebugInfo("sm", kk);
3 T9 l. f/ z; c8 r" h - rt = Date.now() - ti;
/ b+ Y6 \& K% v, S$ J* p/ H - Thread.sleep(ck(rt - 1000 / fps));
8 F r' |3 f: O$ H - ctx.setDebugInfo("error", 0)
( u' `1 ?) f% ^ e+ Q' X9 k - } catch (e) {
( H2 y* z u# _# s: c" T( w* ~ - ctx.setDebugInfo("error", e);% f8 t3 K+ w* e0 G) b! ?$ r# o! a
- }
& ?( j0 q, T2 r/ m/ R B9 ] - }6 v9 O* P( M8 Y
- print("Thread end:" + id);
- H- w: K, Q" C. a; T% Y/ ~# |6 n$ V - }
" T W( Z6 y; U) D ] - let th = new Thread(run, "qiehuan");: h8 A* t( E& A
- th.start();
+ h6 z$ u$ m1 \* |: B4 d5 H# D - }
& i" Z$ B2 Z0 N z" Q' a - 4 v# _2 C7 H- H: Y8 S. `2 o Y6 J
- function render(ctx, state, entity) {
# }' ?% {: t2 y* ^ t6 D - state.f.tick();
9 b1 M: a/ `: d4 T - }7 M) _. p. c4 c; A* O9 A( v$ d3 c
9 W* [1 y; @6 v. e- p, b0 _" p9 ]9 @- function dispose(ctx, state, entity) {
; g1 u' z! ~: N$ Z - print("Dispose");
& o+ T5 |5 G6 K& X3 Z$ _ - state.running = false;
9 d/ `; w+ B$ o, K3 L! D: ~, x - state.f.close();
2 ?5 P* t k" ] @2 b l1 z - }9 N; Z& Z7 t2 ?
- I5 D6 ^3 w$ x; F1 w- function setComp(g, value) {
7 c+ J. v2 p& [ - g.setComposite(AlphaComposite.SrcOver.derive(value));
( w9 ? V8 X4 n V0 \ - }
复制代码 3 I* I _8 @# [0 v6 j0 e0 D
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。
* a& P5 e6 [; N. X+ P9 C
3 Z; D, r8 y. ]- ` B( a; F* R+ `. y1 U1 z: V, q' M+ p% C' J
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
+ } a7 l7 x* j |
|