|
|
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
×
- X4 r3 M: w% F& 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。 h' f/ [4 B2 b; F- H5 s0 B
- importPackage (java.lang);6 d) [* y: r" u/ V! c
- importPackage (java.awt);
" v$ X0 C; B3 q - 0 y" b8 _' }2 z- i: l. J# S* A9 ]. a' [
- include(Resources.id("mtrsteamloco:library/code/face.js"));
1 s; E1 I- y1 O8 | _7 d* D$ @ - : L7 t P$ d1 f; ?; k9 a3 h
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);0 S, m) @; {" |& }1 ^5 O% ]) [
" v' n4 d/ ]/ e' d: D2 q- function getW(str, font) {
, y- T: @7 P: {! O% z - let frc = Resources.getFontRenderContext();& H- L' k3 z, i( G, X' ~9 E4 c
- bounds = font.getStringBounds(str, frc);
( L6 U- Z2 A$ L1 t3 s0 H - return Math.ceil(bounds.getWidth());9 w: p4 t# @3 v6 S1 J4 s) M
- }' l& o4 {# v% S' e3 D- a a
/ d b, g# {) Z- da = (g) => {//底图绘制 T8 n: p$ t7 G* T1 a+ Z
- g.setColor(Color.BLACK);, g% ^( v( m V2 B* Y! k5 s
- g.fillRect(0, 0, 400, 400);* w3 S. w- @6 U; t" E/ K
- }
; z* {$ j, o- H. |" d
7 }7 _2 L! Z( Q# n- db = (g) => {//上层绘制
) D# V% b- \: @ b) m# o - g.setColor(Color.WHITE);
9 o7 A" ^# z, h: S - g.fillRect(0, 0, 400, 400);' F$ M" G6 o; q. m6 \
- g.setColor(Color.RED);
- A) ^3 z' O% u$ t9 n - g.setFont(font0);7 }8 f) ?, J6 T6 `
- let str = "晴纱是男娘";, A+ u% E, r& o
- let ww = 400;% q. w- r- Y7 x) z( Q' u5 c
- let w = getW(str, font0);( `- y& k( t1 p. T- m& i7 ~( A* ~
- g.drawString(str, ww / 2 - w / 2, 200);8 @6 h9 h) U" C" ?
- }
+ q5 `1 G/ t8 k, ]9 z
/ G) c9 X5 E& z. B: U2 T% n0 l- const mat = new Matrices();# M9 T4 G/ u/ ?
- mat.translate(0, 0.5, 0);; y5 Y0 k0 P/ N' ^
! p& m. f1 r0 |2 ?' [0 G- function create(ctx, state, entity) {
4 O' x k0 r9 F0 S* q4 e: W - let info = {! ]7 {/ }5 T" h* U
- ctx: ctx,
0 n' m& P( m# `' [3 a. Y2 z - isTrain: false,* i. M5 u' j3 j4 ^4 `
- matrices: [mat],9 r7 @, }* f3 y1 Y5 c2 e
- texture: [400, 400],
: s6 p3 [9 K" b6 `8 l - model: {: F8 B; Z5 Y& U j* F& d
- renderType: "light",! J& J& t% A* K
- size: [1, 1],% `) n" Z% G9 |/ w+ K& T. E: \1 @6 @
- uvSize: [1, 1]
6 |: J+ X3 k2 R% v7 M+ @ - }
5 t; g" T) g+ M( _( u C - }
' `/ B! [% U" \" O( Q" r - let f = new Face(info);0 p! W4 S$ g: O/ i# c& T
- state.f = f;
9 J# t; {. v# |' z9 x - 6 N; e) [ w( V+ r5 }/ t
- let t = f.texture;) u1 U: |- x# T/ B/ o
- let g = t.graphics;3 }$ m- u0 N7 n$ r: u1 N" I c2 t" t- S
- state.running = true;' N( ~4 {* P$ k, d9 o! C
- let fps = 24;
}; g4 i" R) B' Q" C* e - da(g);//绘制底图) S0 R/ I) H( j8 }" `1 ]
- t.upload();$ i7 A G! w" `, ^% n5 H
- let k = 0;8 _% O, k1 d2 i4 K1 ]7 K& D1 \7 I
- let ti = Date.now();
) Y( E% Y* j* X+ \, k - let rt = 0;
% [% l- W! U5 e7 }" { - smooth = (k, v) => {// 平滑变化% O; J' H1 g4 U- k2 b
- if (v > k) return k;) ]1 N0 A. p9 p; z* x6 ?0 W+ r
- if (k < 0) return 0;
" `7 T. y. o0 P) l - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
; c4 J$ p2 A% h - }
3 p$ a" v8 f* X; B0 \ - run = () => {// 新线程6 {: A3 W# S' _, ^1 f2 b
- let id = Thread.currentThread().getId();
+ s4 R+ E7 ~& ?' r4 u9 B' J' _& W - print("Thread start:" + id);6 g! g# Q7 {2 G
- while (state.running) {& t6 ` a' z9 \& q" R. u% G7 y
- try {1 }# i% S- {; C; J. t" }7 Y( b( E" X
- k += (Date.now() - ti) / 1000 * 0.2;5 E% E8 f$ e% F7 M6 O1 J; D
- ti = Date.now();) p9 y; H1 {5 O1 e2 E! M* [
- if (k > 1.5) {
* W6 W7 c8 p. q. } - k = 0;
" j! N' ?* \( |4 W# ` - }
) y, `- h" t9 Z3 {; T( R - setComp(g, 1);
7 r1 V7 W# s4 J, k" P4 c6 r9 Z* D - da(g);# j" f. I+ d7 \% F. X
- let kk = smooth(1, k);//平滑切换透明度9 J" \$ j# a: r; }0 A! Y
- setComp(g, kk);
3 B: g9 x7 n# n, m. t: d! N* d% o - db(g);
. H0 J# z% |/ X' ?. x/ E - t.upload();$ F8 ]) E; P, y. g% ]4 R0 G' M! @
- ctx.setDebugInfo("rt" ,Date.now() - ti);7 J. U9 T+ M* w& Z
- ctx.setDebugInfo("k", k);
9 i. d2 q) ~0 ]; C8 x6 o6 j0 o - ctx.setDebugInfo("sm", kk);
" |3 M b( j4 x& | - rt = Date.now() - ti;# V7 s% X q* }& m3 Z
- Thread.sleep(ck(rt - 1000 / fps));* {' f& |! X+ n% ~( R
- ctx.setDebugInfo("error", 0)" _" I! H" o7 C* K* f) |& N
- } catch (e) {
' D5 _! V; J# M/ u2 A7 L& P5 I - ctx.setDebugInfo("error", e);
0 N0 S- ?; n3 m0 P; m/ V2 e# _' y - }
7 f- q$ o. d( E. r, G2 \: V - }
. T! f) _1 Z4 p6 f7 ]/ | - print("Thread end:" + id);7 R `; A+ [5 E1 {% O
- }1 d) y0 B6 z6 ^. N+ x# Z: m6 \
- let th = new Thread(run, "qiehuan");
( o# u8 I4 D+ \$ W* _ - th.start();
# l! e1 m% u4 f. v' b - }* j# K6 P! ?+ R4 w4 E8 |( e
- H/ E, |& j! ?8 w+ E" f- function render(ctx, state, entity) {
/ f8 D# V3 K) _6 d* Y6 m& i: L - state.f.tick();/ k) s9 Z4 y6 z/ U
- }9 Z8 t4 u2 j# s8 ?
; k9 _. M6 x8 D$ `' ^- function dispose(ctx, state, entity) {9 c& V6 O5 E* U& f# L* Y$ P
- print("Dispose");1 `7 ?8 `0 i! v4 t! Q# W, P! {
- state.running = false;
" h2 l, F( d* f- B* y - state.f.close();
4 m8 T4 c9 h5 V2 ~' D3 W8 r- D - }* G" {1 x1 j5 @/ O7 E3 F: N8 o+ }
- . \4 i) p5 P \
- function setComp(g, value) {
9 B/ x- g! L- W: v: T% @ - g.setComposite(AlphaComposite.SrcOver.derive(value));2 H/ v4 N. S2 I s" b
- }
复制代码
9 W0 L$ X2 B5 H$ I& t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。
( R3 l/ m( {0 h- ^5 G+ i; u
+ X' d8 T2 i8 C4 ?1 G' r; I/ Z; l" y D8 k# u5 `2 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)
! l. P- e3 g5 J7 w& j |
|