|
|
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
×
; a6 ?7 S+ w% y8 W$ |) t, 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。6 }' L/ r( ^1 F$ n
- importPackage (java.lang);
. e; I3 Y8 X( D5 j8 p - importPackage (java.awt);% `9 u0 u, D; ~3 a5 L6 P
- ' J3 d$ t: i0 m
- include(Resources.id("mtrsteamloco:library/code/face.js"));# B6 k9 P1 L5 K; q
- e* X) M1 i* x, H. z# k1 F
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
6 d8 X% X7 K* h) [% A! x - # D o- C( [% E4 o7 g
- function getW(str, font) {# O# S0 O3 l8 u# W! i
- let frc = Resources.getFontRenderContext();
- b5 e9 c& j$ c+ Z: n, k1 u: w - bounds = font.getStringBounds(str, frc);, `: g' E1 j/ K; W1 K
- return Math.ceil(bounds.getWidth());3 u. C( E8 m& }- B Q. x: n
- }
" W- G/ o/ h9 d* q" V
% f+ m6 E4 K5 G- da = (g) => {//底图绘制
% g* A4 ?$ v5 s1 R- B# m% s - g.setColor(Color.BLACK);
- v4 f; \ |1 C( e2 }1 b' U - g.fillRect(0, 0, 400, 400);
0 c1 n2 ~0 i' t/ Z6 \! o - }
4 x: I$ I9 P$ k- C; S
3 P+ ^6 V- V0 ^# ^8 r! P* d- db = (g) => {//上层绘制
4 Q8 X8 I9 o% x' R - g.setColor(Color.WHITE);
9 C0 U0 j5 ?$ |% S% d5 X) u8 L - g.fillRect(0, 0, 400, 400);
9 n* K5 ^8 [: d' G& N6 l+ \ - g.setColor(Color.RED);% ?+ [- q# Y8 k
- g.setFont(font0);" U4 l/ l, _$ q0 G( [
- let str = "晴纱是男娘";1 I' z9 D. a2 l. @, D
- let ww = 400;
3 S) V& } ~" e1 G& t - let w = getW(str, font0);
/ T5 R4 H, R: G - g.drawString(str, ww / 2 - w / 2, 200);
; E2 _) }* k/ n G: Q - }2 i; z L: Q2 \
- ! i' }2 R+ _- n" D
- const mat = new Matrices();$ X1 l" N4 C7 Q6 ]7 x6 {- | Q
- mat.translate(0, 0.5, 0);* z6 ^; ~& Q, u) v; V% p
- , X: M- B- o/ ^
- function create(ctx, state, entity) {
9 a$ c, j% [ i4 }( M - let info = {
2 [; J. d' Z" o- F0 { - ctx: ctx,/ K$ V$ [) q4 p6 R7 I
- isTrain: false,$ Y1 W) Q9 }+ ~ T- M& G: N
- matrices: [mat], E5 K0 F8 c2 D* p0 k4 x
- texture: [400, 400],. @( T a' N I4 t2 [8 s
- model: {
2 y; F5 f4 _* q& O3 C o) p' G - renderType: "light",
' @! h) W$ ^+ X; @$ s - size: [1, 1],' c; R4 o, j- L: T4 ^
- uvSize: [1, 1]
) T5 k$ H' s6 D: x0 u - }
1 b: [3 ^" e% |4 O: ~9 h. U( P: H - }2 B" i# E4 z8 e7 B' H
- let f = new Face(info);) [* |5 Y; C% d5 i0 \& B7 Q! X
- state.f = f;
6 @9 H7 W* o% S3 D( ~( I6 L' t
) h3 H/ J8 Z8 W- let t = f.texture;
3 N8 @: Z# j- L$ [) V; r; X - let g = t.graphics;
* H- `5 M' K8 U4 I) H. R9 x - state.running = true;$ H ?% U& a! Y
- let fps = 24;2 M( F# v0 |. q* Q1 f
- da(g);//绘制底图
9 M \1 K$ J, j! _$ e - t.upload();
" S3 [& H9 l) Q/ t* `- f2 X - let k = 0;# Y. x5 q( l7 O1 f: p
- let ti = Date.now();
1 y- a/ _; P- y% l( K - let rt = 0;' j% |' I! g; t1 H/ x: m( a' R
- smooth = (k, v) => {// 平滑变化. t; v8 f8 V4 ?3 j/ v3 s3 k
- if (v > k) return k;
0 u6 ~- c4 p/ R5 l$ G - if (k < 0) return 0;9 R. o% j8 s( O7 F) K
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
1 H; M0 E/ P5 V% i2 }# v - }8 a; t' `. B/ y9 e1 k: }) M
- run = () => {// 新线程6 J1 q% W, u% _& B& P
- let id = Thread.currentThread().getId();" a$ F, N, ~( L6 _* ]+ k. l$ W
- print("Thread start:" + id);* R. C. N+ N2 M; ?6 n( f
- while (state.running) {
6 U$ ` J% K* ?/ {0 ^ - try {$ \* Y% b7 n+ N+ ]8 I' ^4 J& D/ T
- k += (Date.now() - ti) / 1000 * 0.2;
0 ?4 T6 I5 L* v. u& Y - ti = Date.now();. G$ M1 C7 J, {
- if (k > 1.5) {
3 X* z( S6 \1 @" D0 g - k = 0;
. ?* T' ^5 Y' H1 N - }0 `+ |. v8 |6 h
- setComp(g, 1);
0 G6 C' `: b, N0 l1 ^% M1 W, v9 ~ - da(g);
% s$ | `% v* `9 X0 R - let kk = smooth(1, k);//平滑切换透明度: b! F9 j4 V" @6 I0 L2 X- O
- setComp(g, kk);7 B: q1 g! J2 z4 @
- db(g);9 U- p9 x! D% @3 {0 S1 }
- t.upload();" W0 {. c X" e
- ctx.setDebugInfo("rt" ,Date.now() - ti);' ^2 s8 G3 \% y9 E: I' [, e
- ctx.setDebugInfo("k", k);
8 |5 ?- a3 i4 t6 }5 ]- D - ctx.setDebugInfo("sm", kk);
}2 b3 q% h8 M8 P0 E- L( C - rt = Date.now() - ti;5 v. j# `' z- a0 T
- Thread.sleep(ck(rt - 1000 / fps));& b5 O# ^6 ?% a+ F. y
- ctx.setDebugInfo("error", 0)) o5 r8 P: g7 e& W& X
- } catch (e) {2 U+ o& h( k6 h! E3 h$ s# F: I
- ctx.setDebugInfo("error", e);
- J6 E7 {$ w7 D& V9 e) r - }
& `* ~8 G% p$ T U$ t3 b5 U - }
/ w" \' f( R4 t( i9 Y9 P7 R - print("Thread end:" + id);
: v) [# |8 E: Q& K \+ q - }! p x5 L. E8 k. O
- let th = new Thread(run, "qiehuan");3 n% H% k7 g) |$ c
- th.start();
$ \. e6 l0 P0 t! Y/ T* f - }
) E# d4 H/ Z3 S; J( X - ' ^. b- r9 ~/ X7 o% a2 v2 N
- function render(ctx, state, entity) {% ], r) E# q& r. B
- state.f.tick();
( F+ Q! y' i& U, E - }
9 [* @( h9 P; M# y/ X7 f. b+ Z- n7 N* | - ) w! D" @+ ?' j1 }; z7 O
- function dispose(ctx, state, entity) {
! o' C. R' y6 F7 o9 P - print("Dispose");3 ^7 X$ V- L! k% H3 a. N6 ^) P( l
- state.running = false;
4 e4 q% A" e3 p+ L8 f - state.f.close();& O& C* Q/ `0 b; Z+ d
- }
8 S# i6 z) B. {( H8 k: F& ~ - ' j/ j+ d, a6 I. K/ I' l( Z) x2 v
- function setComp(g, value) {" |9 C1 \4 b1 Q( ?1 b( M
- g.setComposite(AlphaComposite.SrcOver.derive(value));
E; z9 z$ E' {" x1 W - }
复制代码
% r/ h0 b) |( `6 u! w' x8 f7 g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。" W- P) A9 R, W: }3 x/ J- d5 p
, N) L. e& M. b: `
& Q. C8 R0 T$ Y$ W! D顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下) I) t. r9 g0 v. u* \
|
|