|
|
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
×
6 G# E' ?% q) \" e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。
2 t2 H( l8 e h! x7 ?- importPackage (java.lang);8 x% t! l* B+ p) e9 c! T: W
- importPackage (java.awt);
+ n& K# o3 U8 _, i( g7 N - - U7 B6 X. i) z' Y5 h4 d
- include(Resources.id("mtrsteamloco:library/code/face.js"));
) V0 ^' s t( s; A2 x2 { - - w. x u# e4 _5 k
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);- p* z! ]( ^. j. s. s' u
- 3 }' I2 k- v! m, [4 `
- function getW(str, font) {
; N3 r) R* f# z5 p9 O - let frc = Resources.getFontRenderContext();, U7 @% @. s2 d
- bounds = font.getStringBounds(str, frc);3 c5 B( m$ ]/ c# O/ q) Y
- return Math.ceil(bounds.getWidth());
A7 N; d* s) L. u - }4 ]& G+ Y6 k, w4 m G
- - c( ?' j& W( ?9 @
- da = (g) => {//底图绘制
' K w( r5 q/ @; C. p+ M - g.setColor(Color.BLACK);8 T) m, p3 P# F# I2 a+ G, u2 @; s
- g.fillRect(0, 0, 400, 400);1 O9 h7 m: X! p8 Q( u( j+ u4 }
- }
$ `" v) q# _) Z' u' L: \) R - s, d% M! O/ {( ?5 v4 F, y' g: d
- db = (g) => {//上层绘制
: j; Y7 F G+ A+ q3 ^; I - g.setColor(Color.WHITE);- g; c" a* ?8 d" d9 F
- g.fillRect(0, 0, 400, 400);; u. T1 E! w. V$ B9 E4 A. R
- g.setColor(Color.RED);
/ v2 @- f$ N& V' j) n - g.setFont(font0);
' y# L0 b4 y' P/ O( L0 R+ f - let str = "晴纱是男娘";
- G$ s; ~9 L3 s# A* j - let ww = 400;0 z" X1 j" \! O% H
- let w = getW(str, font0);
. I( l: l% A* N1 l, H - g.drawString(str, ww / 2 - w / 2, 200);
9 c& q& s% ~1 o1 A7 c - }9 l3 e) I: N! t
. y/ Q% D. m! f5 N" E; o1 Z, V* @- const mat = new Matrices();
2 W1 q" H) Y, @: Y! s - mat.translate(0, 0.5, 0);) d+ I( q" c \* o9 c# a
U# ^0 g1 R. q# _9 m- function create(ctx, state, entity) {
. T) S3 D$ `( q' T% Y - let info = {
) ]# B0 s7 x! b; M/ b! X; t+ } - ctx: ctx," N* n$ C6 z+ D n* }3 }5 U' [
- isTrain: false,
; [3 r- C( C8 L* j - matrices: [mat],
/ g# c4 C9 o( Y; x: q - texture: [400, 400],& Q( S3 K. J K; [2 u) r
- model: {6 X+ H' k: i3 a3 d7 t) y
- renderType: "light",
) k5 u+ b7 k6 o - size: [1, 1],
, A6 R0 ^1 \8 G P. R) v - uvSize: [1, 1]& A4 D: a% w4 C1 ?" Z( e
- }
5 w6 e; e7 [) Y! r - } A2 s! f4 t8 B. \1 N
- let f = new Face(info);
& k1 \3 y- O% r p* J) X - state.f = f;
( M) m( c# I( S& b0 A - ; s1 C3 \ j* y! p5 {# j7 u* c/ _* z
- let t = f.texture;6 ^6 ^- n+ }+ I; ]
- let g = t.graphics;
4 H; P( O: r, \* T$ d {+ f8 G - state.running = true;, @. I! i1 O4 m
- let fps = 24;3 h8 `0 @0 \2 S4 C2 O( i1 E
- da(g);//绘制底图& i# T5 A. G) a' d) f. m
- t.upload();
2 V1 I" B$ o8 x. i" T - let k = 0;
* s2 ^# e& Q8 x } - let ti = Date.now();
7 {% m' D0 p' o+ H2 f- u - let rt = 0;
, F ^/ f; r% x: R% G& H - smooth = (k, v) => {// 平滑变化+ u2 A; x1 X. M! l' x& F% e7 b
- if (v > k) return k;) g9 `" Y/ L, i+ o" t0 _
- if (k < 0) return 0;
' E% i' |, s2 a! | - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
9 J5 q3 T% N' C8 L* ]* Z+ I% B - }
* @8 a' |- P' V3 G+ M! C: M7 z - run = () => {// 新线程
; R7 ^% Q5 `6 O$ ?& {- @( }" u- G- l - let id = Thread.currentThread().getId();
m% a) A0 [0 `6 U; g* ` - print("Thread start:" + id);
: m) e6 i8 O0 } - while (state.running) {+ `% ^- }5 S* C- A# A0 h6 @
- try {
# ^* ?7 j9 f! N& v - k += (Date.now() - ti) / 1000 * 0.2;
- J i1 E6 @' T( A9 s - ti = Date.now();
4 E9 n& ^5 o7 O, O/ e) D - if (k > 1.5) {
. u, Q+ q' d, C) r8 r' P - k = 0;* d* s) }. |; c! ^; B
- }3 `2 S$ K& F k @9 x( x
- setComp(g, 1);
/ Q5 H7 Z9 [/ J |2 T. B( b - da(g);
+ T+ { d4 V c - let kk = smooth(1, k);//平滑切换透明度
4 f/ q0 p: _8 S# m" k4 m - setComp(g, kk);
9 K) m- Q9 v) ~5 E$ Q7 g - db(g);7 |* @5 C! D, r1 Y. e- M
- t.upload();
7 m$ w1 y2 _' k: h4 C) ^: |3 T' c - ctx.setDebugInfo("rt" ,Date.now() - ti);7 N& n: \$ }1 W" J
- ctx.setDebugInfo("k", k);
. G) P* q2 x2 U - ctx.setDebugInfo("sm", kk);" v! J. H- ~6 A. v
- rt = Date.now() - ti;
5 A0 n9 ^8 d4 g3 v/ C5 J7 I( O - Thread.sleep(ck(rt - 1000 / fps));
1 C+ k6 l: V8 Q* K8 K/ _$ P' e+ B1 x) @ - ctx.setDebugInfo("error", 0)
* W+ D5 k4 h, T% W; J! @ - } catch (e) {, r" C3 S% ^2 t. p, I, {) \
- ctx.setDebugInfo("error", e);
: u- @( E& L& N, i H* v% C - }: a" d. x0 | E! U. y+ S3 P0 o8 O2 Z
- }
- T0 u8 @( C& Q - print("Thread end:" + id);
# [0 K4 d' W( q+ g: c - }
. D( k2 P f B- Q - let th = new Thread(run, "qiehuan");- I2 F1 r* ~3 ?# r
- th.start();6 C; |; p8 _: N e
- }, f0 w1 e! u, `* R( F
- 8 Y) H' u$ i# c
- function render(ctx, state, entity) {
$ s" { h; _. L - state.f.tick();6 c1 h7 C- ^2 n$ ~7 G3 q3 I+ c
- }
6 L O. c) A$ `. Y" |
2 e! y# h% s. A4 w- a+ J- function dispose(ctx, state, entity) {
: N* Z5 h9 R0 [: y% T! Z - print("Dispose");" T2 i( ^5 |5 Q+ w# A5 v
- state.running = false;- s: o2 u1 p& e1 a' P
- state.f.close();+ c/ f& i; h% I/ g' |6 |
- }8 B. O* B, O8 L) [9 s3 v0 G
- 3 E" ]! `& E1 ^8 m# `- @
- function setComp(g, value) {
3 r' t! q3 P" D; t - g.setComposite(AlphaComposite.SrcOver.derive(value));
6 O% e9 h/ u# R% @( ?6 K" q - }
复制代码
" |& p+ y* r) K/ k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。2 Q3 t+ Y0 ~7 S1 r* j: G# L. F( Y1 N
. s: T0 `: _3 [- a; ]
1 Y u' V* I9 W
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
- I8 a/ n/ ~, y- D2 U. [ |
|