|
|
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
×
( C* C& ]$ `& W. e3 v- o5 H7 k6 B
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。, y( d8 e% ]6 P2 H2 G
- importPackage (java.lang);) _9 P0 q" p; {7 g) l8 k
- importPackage (java.awt);0 U7 f4 q& g" O1 B& k+ t& [: E& ~
: b: [& C3 G- }" s1 o; \- include(Resources.id("mtrsteamloco:library/code/face.js"));+ n2 J: s8 R2 e( s. V4 d+ v8 ~/ I
- * H: L' C" a$ l. m
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
, ?9 M& Q" X; ~; i0 U+ \
6 S2 {. k9 _, m9 {4 L- function getW(str, font) {
/ O. v9 |: q/ G5 s" B2 y' i - let frc = Resources.getFontRenderContext();$ H2 A9 I) [/ L, t/ e) }) Y: ~+ L0 H
- bounds = font.getStringBounds(str, frc);
# v7 S3 X/ q) r$ x( U" x9 y/ h - return Math.ceil(bounds.getWidth());/ Y3 s5 B3 Y$ T7 v. s3 W" g; ~' _
- }$ d; ?+ c" b8 o3 d0 Y# f
]; s- d0 q% ]9 `, |( E$ ?- da = (g) => {//底图绘制
: B [0 F L4 x/ _ - g.setColor(Color.BLACK);% c% R6 T; I+ U& s$ U% \
- g.fillRect(0, 0, 400, 400);
5 B6 k6 x. O0 Y7 @- C5 w - }# M3 c4 S6 K- \7 Z, F$ a
8 X" |) O/ ~ R- db = (g) => {//上层绘制
$ U$ W2 M; D7 W1 |" ]/ N$ G - g.setColor(Color.WHITE);+ @1 u7 y6 _0 I: H O. `, u! w3 g* ~1 v% h
- g.fillRect(0, 0, 400, 400);
) Y4 b ^1 [/ d, ]" { - g.setColor(Color.RED);
N8 V- `1 P4 ~4 M% Y! O - g.setFont(font0);4 D: N9 O Q) @8 b
- let str = "晴纱是男娘";
: s: {8 j% Z$ ?8 O0 M - let ww = 400;7 k/ \. N6 h/ ^
- let w = getW(str, font0);9 @3 i- x7 ^* e2 `0 T4 b3 i
- g.drawString(str, ww / 2 - w / 2, 200);
- p% N0 }" u5 Q( F- k - }3 T% H* v0 `# m6 v1 g
- . L& ~- f3 n0 A1 k
- const mat = new Matrices();0 e1 c$ q4 c! w9 O
- mat.translate(0, 0.5, 0);7 C# u0 @2 ~; N8 P
- # T# z6 l% p7 L2 y. G( ~6 Y
- function create(ctx, state, entity) {
1 p: i/ Y$ D3 m9 g- R. `* O, D - let info = {
) j8 r2 ^5 S' K6 i$ `) ]( x7 _ - ctx: ctx,# Z8 v! o" [ M/ G) K
- isTrain: false,8 e+ @3 m5 N J; s# g. g6 w5 F
- matrices: [mat],8 x) g, m S3 G2 {. m
- texture: [400, 400],
* s( {! n. ?1 e. A8 s/ D" I - model: {: A; O8 l' T) h7 d
- renderType: "light",
$ Z) f9 h* S3 x5 a. V - size: [1, 1],
2 ~2 B4 M0 q. U; i& ]3 R) R/ q - uvSize: [1, 1]
7 Q4 o* x& W) L' p - }
" L: X. _- r( ]* S$ C - }0 `* J/ ]4 f- w
- let f = new Face(info);
! m8 u; `7 L- ?- r/ _ - state.f = f;1 s2 s% `# a& n
/ I( ?6 M9 \. }, Q+ j9 D- let t = f.texture;7 U9 Z" @; a3 C+ u
- let g = t.graphics;
% P# q! c! g5 g( R& W5 W - state.running = true;
3 w8 Y4 p O* ^" O$ w9 h$ h - let fps = 24; l, v: u+ M6 |1 ^
- da(g);//绘制底图
- O( A; {0 W2 {5 h2 T- g6 q - t.upload();
" r. s6 A7 z3 w G$ e/ G3 ?8 n - let k = 0;
- ~+ \8 U& t5 P8 V! S6 w - let ti = Date.now();
7 X% R. ?8 s. h' K$ M& | - let rt = 0;2 M, _% I4 M, b i5 ^
- smooth = (k, v) => {// 平滑变化; l; g: ]) m( j6 |) \' t
- if (v > k) return k;9 i, l0 ]& M) l* s' M' b0 q
- if (k < 0) return 0;
6 w# k" p4 d0 c! P - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;* g: B$ d5 Z6 @* |& F5 C
- }; ]: W R5 I! I; ]% O
- run = () => {// 新线程9 C/ J+ H$ i5 q" S h/ q
- let id = Thread.currentThread().getId();
7 x# h: f( D, h0 A. V0 c - print("Thread start:" + id);
' N. x1 \, O: ?5 ? - while (state.running) {( e" N2 [; x: Z5 [
- try {
: N. ]5 O( P9 x- I5 O - k += (Date.now() - ti) / 1000 * 0.2;
3 b, D0 @' x1 B- C- U - ti = Date.now();
8 t6 U0 r# n# s2 B - if (k > 1.5) {
: J k, z2 a& Y2 w - k = 0;0 x/ r0 W! t; e1 A5 o+ @
- }
0 ~! `6 A$ j( L - setComp(g, 1);
+ F( n" U5 N" _( q3 M6 D# Q# ] }$ z - da(g);
% B4 c8 ]0 g, q - let kk = smooth(1, k);//平滑切换透明度
2 P0 Z* U/ o8 k$ I - setComp(g, kk);7 P7 p( h5 h$ b5 c
- db(g);
7 H1 T+ f, Q8 N! Z1 _& t; D Z - t.upload();
2 K5 U+ Z N. c. Z - ctx.setDebugInfo("rt" ,Date.now() - ti);; R8 x1 Y8 K3 @( y
- ctx.setDebugInfo("k", k);' y+ t* [4 C4 s4 d& ~
- ctx.setDebugInfo("sm", kk);$ Q2 z a. p2 ~5 e- @8 Q$ d
- rt = Date.now() - ti;) U1 {! o5 y$ n% j% J8 t% V' O
- Thread.sleep(ck(rt - 1000 / fps));4 H/ T8 d6 K) l- O/ f
- ctx.setDebugInfo("error", 0)
7 b% O: z) g$ `+ g6 F8 p; l: M - } catch (e) {+ E. Z" {! X4 c/ b
- ctx.setDebugInfo("error", e);! {" W. L! K, e1 R0 Z' ~; |
- }' `+ N* N: C) y! z3 x& [5 w: N; G6 Z) z
- }
C) J6 Z% A7 k1 x* u1 c1 w8 s: Y" t2 ~ - print("Thread end:" + id);7 G0 X+ }/ Y# w
- }
+ L0 H- `: n, n! U- c" g$ m' X - let th = new Thread(run, "qiehuan");( m: Z& ^- V, @6 f3 }
- th.start();" I& }6 I, I o8 b
- }
. c" c5 \5 f, n3 }3 h# s
5 i3 b, v7 T" A( {& B, U' Z- function render(ctx, state, entity) {
|( `( ]* d- i- m - state.f.tick();
+ z" W9 V4 y6 h% | - }8 Q5 l4 e- u; j$ G. Q4 w
9 `; T; O9 S' K# m% b' h- function dispose(ctx, state, entity) {
8 U2 D# N4 `9 d, a4 Q! M& Y# I - print("Dispose");
! y) X$ [9 O! l( A - state.running = false;
" u: e' l" q4 ? - state.f.close();
# I. C9 A" @9 r! C - }
# c A5 w7 s5 `8 m# X% d/ i
$ `0 W* y `" y( [* ]. Q- function setComp(g, value) {5 K7 |; I7 y& M- \; l& q
- g.setComposite(AlphaComposite.SrcOver.derive(value));' C5 D7 a- \; X+ w w
- }
复制代码 ' l) W# L7 H1 o! S' R; N* E
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。
' ]; I1 v+ u" W: u. n6 t4 D+ e
: C& _+ r! v* l5 Q B( @6 k2 c4 y
x+ k( ~5 v* B0 j3 j% A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 r" M2 F) e' r. }" w3 J
|
|