|
|
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
×
/ E9 C& z. S# Q" d9 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。5 ]2 q' m1 E: t
- importPackage (java.lang);
; J" v" D& L) l - importPackage (java.awt);
% p0 D- L$ f* s5 [
( h6 s" G& o8 z0 F/ I- include(Resources.id("mtrsteamloco:library/code/face.js"));8 _% ], B/ Z; `* U# [" w+ a; J/ l
- , D/ X y/ D$ x6 |1 [8 G
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
8 [, }& \' s0 Z) X3 ]
# \& h" B. \* R% y- function getW(str, font) {
4 X @* B+ T; f% K$ i, y+ |# u - let frc = Resources.getFontRenderContext();
2 g! }( r6 J) n3 S$ Q - bounds = font.getStringBounds(str, frc);: l8 T9 d% w+ }8 I7 z( ~/ i
- return Math.ceil(bounds.getWidth());8 Y- m$ }: c. c$ f
- }; j( E5 E% `3 {
- c* ^) P+ w7 r* D/ o- da = (g) => {//底图绘制
8 R7 k# |( @, v8 H2 w5 F a$ Z' E& e - g.setColor(Color.BLACK);0 ~+ H& s& o+ e9 A
- g.fillRect(0, 0, 400, 400);
/ ?8 O4 a/ \: c/ Q9 j: K - }: b8 @+ F( J0 w- _+ @0 F! a
- 4 t( ^3 S5 B! H6 B
- db = (g) => {//上层绘制
. W8 r2 J: E9 ] - g.setColor(Color.WHITE);
4 O A" o' f: ?7 B- p( F - g.fillRect(0, 0, 400, 400);
8 h3 }$ T' H: q" Z' Z - g.setColor(Color.RED);
0 Y! V s3 i" G( J& F - g.setFont(font0);
5 H/ s' u! ?6 \* W, E, M0 Q9 o - let str = "晴纱是男娘";; S/ V1 t) N9 a4 `1 P" h) M/ \
- let ww = 400;
/ I" ]) X+ H4 Z0 G5 W+ j" x - let w = getW(str, font0);4 C7 S8 f8 H. ]9 |) Y
- g.drawString(str, ww / 2 - w / 2, 200);
, B. p$ d8 h" q6 |3 t7 x' ^$ J# _ - }& ?2 f9 D: B! Q3 x) y+ ]9 p6 H) Z
- : E/ i2 r: z5 h+ V9 v; ~- ~
- const mat = new Matrices();
' ^1 j; }8 @) L% o& L: m - mat.translate(0, 0.5, 0);
: S" t- t/ b7 d G - 0 Q" L) K- N+ S3 d) H" ]
- function create(ctx, state, entity) { Y6 `8 p* [1 a) Z- {8 ^. J
- let info = {
& T( o/ _+ B* d - ctx: ctx,
% e3 w1 h6 H/ q - isTrain: false,& Q6 S9 n, }- s o/ W
- matrices: [mat],
: m8 f$ ]9 Q$ i! t8 A1 v2 I6 C - texture: [400, 400],
' J& d n: E, H# j - model: { R3 J4 ^) Z) p: u" A6 F0 r& m
- renderType: "light",7 _# d. t' a0 ~7 X$ s/ E! I
- size: [1, 1],
$ [4 b1 w6 J$ y - uvSize: [1, 1]7 N0 U+ @0 o0 h" K( t" C# H
- }
3 K! _- {' s! o$ _" R: \ - }
2 U7 R+ b3 L& I5 B0 Y/ ]1 A, J - let f = new Face(info);* S. B6 l3 n& R8 t
- state.f = f;3 z6 U9 X3 p- {* ^
d* v$ x5 S9 H- let t = f.texture;
+ b8 l+ @- L. A* E - let g = t.graphics;2 F" d, f- U% r' c
- state.running = true;" @! U; B3 q' {2 B5 v
- let fps = 24;+ ?$ S* S7 m8 a5 b
- da(g);//绘制底图
( x5 d. u0 p( t - t.upload();! s: \& _' N8 T- {" \& q
- let k = 0;$ A, @ i- {( U7 s' @
- let ti = Date.now();
* t* z3 G& h" c; l8 v& U+ ?. E - let rt = 0;3 ~2 d9 M$ R! T- q) V6 U4 J: d2 H
- smooth = (k, v) => {// 平滑变化. d H3 B3 v. n
- if (v > k) return k;0 L* d1 y# {9 ], K, T, L
- if (k < 0) return 0;3 R4 w: c4 v* F' f1 [7 U
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;* E" h# `. E2 Y' @/ T6 ?
- }$ F& Y1 T8 X$ P
- run = () => {// 新线程1 A' h0 C$ O# _8 }2 S: J J6 h: n
- let id = Thread.currentThread().getId();
$ K t2 f) c' C - print("Thread start:" + id);) C1 [4 R1 k+ J4 H
- while (state.running) {
# O: U( B) ~1 b- l - try {. M, v* Z ]9 }
- k += (Date.now() - ti) / 1000 * 0.2;( n: ^5 M& }& O3 a
- ti = Date.now();
. W$ j1 S8 x# L1 U3 W - if (k > 1.5) {' Q; t ^, F& s! `- w* L
- k = 0;
' [& d0 O+ K0 h- @ - }
& D( {3 _* D) [2 `/ ~ - setComp(g, 1);- a. I& G4 X- e" |6 n4 ]
- da(g);
% l: X4 E: V+ }/ X: g$ K- u7 [ - let kk = smooth(1, k);//平滑切换透明度# [* }$ h' c% R0 g0 @
- setComp(g, kk);
3 o3 M' K+ |4 ^ - db(g);* A$ U* Z) H% u& B
- t.upload();/ S, g9 F: @$ C* c$ F& [: ?3 x+ c
- ctx.setDebugInfo("rt" ,Date.now() - ti);7 @8 H3 r8 }+ c: L; C
- ctx.setDebugInfo("k", k);
3 v; U( ? L! C3 G6 H - ctx.setDebugInfo("sm", kk);
: k l% w$ W( b% N" ^, ]' N# _( @ f- O) g - rt = Date.now() - ti;' o" C' F/ t4 V. b) g6 ]
- Thread.sleep(ck(rt - 1000 / fps));0 x) L' f6 t, V9 K2 P* U3 H6 I
- ctx.setDebugInfo("error", 0)& O3 Q B; p x# f% Z; M
- } catch (e) {7 G- J0 |; A; w7 k4 P0 X% |0 I0 }( o ?
- ctx.setDebugInfo("error", e);% d( `. d: J5 E
- }
1 C" F! T4 y! A; W/ k - }& C+ ]" V, `/ `( h9 q. E
- print("Thread end:" + id);
: w& j) Z; ~ I9 d- u - }
4 M- M9 S, ~( f! r. F - let th = new Thread(run, "qiehuan");) |6 K6 h1 ~( v( _4 b/ Q" y: Z
- th.start();
1 j4 Q( ^+ y& t" E6 e - }1 N! }7 r: j$ e
- 6 F8 u/ ?" M1 v- r
- function render(ctx, state, entity) {2 J3 q! }1 C* \. j, m4 ?
- state.f.tick();
+ Z# J/ E: Z/ Z$ [9 z5 x - } z; M0 Z/ J$ r# F5 k) q' S
( g. M) ~' F2 r% V2 `/ G' j5 y- function dispose(ctx, state, entity) {
% F/ F+ W9 X1 I# [3 \* M - print("Dispose");, o& w( f! ^8 r/ g
- state.running = false;1 b" y" I# n- @7 k- e0 M
- state.f.close(); Y. y( P' v2 o! F" }
- }
% I2 U6 e4 g. P! I1 u1 ]) j
& u! k, {/ ]$ {6 n* r- function setComp(g, value) {
# @# r; g, v0 s* q) z! A& t6 t; ]8 S - g.setComposite(AlphaComposite.SrcOver.derive(value));% `; y7 z& j9 K% q% h
- }
复制代码
" t N2 x. g& h. U. Q. p8 r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 [& g5 R( r: Z+ X$ [
# a, ]( [* ~# U% w3 o P
! Z& H8 l5 e" p: O5 @% R顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
7 `5 V+ R* \- D |
|