|
|
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
×
7 G' y5 I+ {0 L5 S" w y- j" m
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 \1 T1 P: s) c I- importPackage (java.lang);
& K. i( n5 W. }- t7 X1 | - importPackage (java.awt);: W2 t# ]6 h" `* o
# X4 d- W; U) k/ R- include(Resources.id("mtrsteamloco:library/code/face.js"));: x* M% ?7 M- k0 s
- 2 T S( U# ^$ K* ^ E' b: I2 ^4 O
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);9 c1 A0 Y) o' ^: x* H6 ~
- 8 P: N" C0 A- s" ^; h9 T
- function getW(str, font) {9 q; {1 n- L8 f4 M; C0 `( G
- let frc = Resources.getFontRenderContext();8 N6 K# Z' p6 t' G- t& K" n
- bounds = font.getStringBounds(str, frc);
2 f' |. W8 [% K' L" S K; n - return Math.ceil(bounds.getWidth());
b3 w6 S5 R' Q* y8 ?7 f/ r+ } - }! c/ F$ J6 H d2 m" s# l: D
8 S% A' X$ I/ @- da = (g) => {//底图绘制
5 u0 \ d! P+ L) o- I4 O) m! u4 } - g.setColor(Color.BLACK);, R9 I5 }) Z( }1 G) d& h
- g.fillRect(0, 0, 400, 400);4 ~/ c R2 g% g9 _6 ]! S6 i
- }
" j' x$ l) Y, e3 s9 o- |
. q. K1 |+ B9 n4 i7 ]& e- db = (g) => {//上层绘制
) e$ e/ Z" L% O2 c$ \' | - g.setColor(Color.WHITE);
" w, d0 w ^7 f: K - g.fillRect(0, 0, 400, 400);! j" d( |5 w, f3 |
- g.setColor(Color.RED);
. |6 d( k+ B1 d+ z( {- f: b9 K' g4 T - g.setFont(font0);7 D8 _7 Q1 ]( n; C
- let str = "晴纱是男娘";- h7 N- \' k1 Y" b2 N F" V$ f
- let ww = 400;% p* f" F# g S& Y3 {
- let w = getW(str, font0);) u# h9 M& k. t7 ^' ?! f, |4 J+ q
- g.drawString(str, ww / 2 - w / 2, 200);
2 {/ T' X# o. m - }
* o) i" Z; Z) B2 ^# D. X U - ( S7 o/ D+ H7 c, T
- const mat = new Matrices();
& O2 z; A$ s, `8 x+ ^- V - mat.translate(0, 0.5, 0);
# Y9 n8 ?. j+ ~! h
0 w# T9 m6 z3 s! o- function create(ctx, state, entity) {2 L( ]3 O8 e' d( i$ P0 \# g- f
- let info = {5 Z% u! ?$ ], c% ]& K
- ctx: ctx,, a/ U* m5 x( ^6 B3 s7 o
- isTrain: false,
4 @6 F n6 ?( Q6 ? - matrices: [mat],
: l( E5 m1 L1 C+ _" H - texture: [400, 400],
5 b0 W0 x$ w: i" A) _1 i2 a- e - model: {
" |, Z/ Q8 z2 o& [ Y - renderType: "light",
$ W) p" U; ]; w$ F( @ - size: [1, 1],( E- q! } P' q2 s& ~. C' }
- uvSize: [1, 1]; }6 P: l3 O' N$ w: ^
- }
$ ?( G+ N: j8 @1 o - }
: @' z/ k, Z: T3 f$ X1 Q$ q$ I - let f = new Face(info);$ C* q2 O9 `; E% B7 J5 L: l
- state.f = f;
& g; K$ f: k/ p# n! a0 ]
4 Q' ?% |* B3 k( |- let t = f.texture;
! f8 R; L+ N$ t7 r# O: Y* a - let g = t.graphics;- A! R) \* ^/ R: O" ~8 j
- state.running = true;
0 g3 Y- O2 S$ P8 n z* ~ - let fps = 24;
$ P" j2 i# F& T- Q8 o$ U3 M - da(g);//绘制底图
7 i. Q4 Q+ m: g; i' K - t.upload();
7 B; H. I* a; E. p - let k = 0;
6 x; p$ [# p1 ` - let ti = Date.now();
2 i& D" [( ~9 d- `4 E2 M- X$ d1 ] - let rt = 0;
5 ~) d( |. Y/ z& q) [ - smooth = (k, v) => {// 平滑变化3 p+ Q' |0 K) c9 B I. ^
- if (v > k) return k;
9 H! n9 x2 \, Q' C3 L' c4 ? - if (k < 0) return 0;! X! L" E& T' ^" i) _
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
0 g N- i' o7 a, c% L. P2 h - }
7 V7 {: k0 C/ v, f7 L+ D - run = () => {// 新线程7 `( B3 m- R9 l9 x |
- let id = Thread.currentThread().getId();
7 c! s1 d3 t" B/ d7 J - print("Thread start:" + id);+ Y5 K) E4 I$ V* X5 ^
- while (state.running) {
2 X; N2 A) e% B7 z. ~. {. R - try {
. Y: A; j; J( O8 b - k += (Date.now() - ti) / 1000 * 0.2;7 M1 y6 M. a% j' o+ A9 u+ P! I* M
- ti = Date.now();' |# [+ E' t% R- J9 D
- if (k > 1.5) {
: [& u' E) `; z5 ? m7 U - k = 0;9 `& ?) j1 T/ T0 z" N
- }
+ T' L/ \8 @$ }0 `" ^' p" Y Z3 v/ f1 h - setComp(g, 1);" y( `2 d H$ y9 E
- da(g);7 [- \8 P$ C% ~
- let kk = smooth(1, k);//平滑切换透明度 |: x" c. P9 K. n# q
- setComp(g, kk);
% A4 P: S. r4 h, E, ~+ ]$ b, C - db(g);/ V- N4 d3 ^$ `: @5 j+ T
- t.upload();6 g2 b+ v; `) F6 b
- ctx.setDebugInfo("rt" ,Date.now() - ti);
1 h: y6 e3 {% O6 q$ K- a/ r - ctx.setDebugInfo("k", k);9 `4 {2 U' w' N) K3 C% K
- ctx.setDebugInfo("sm", kk);
: b+ Y; K+ T) X9 ~) B- ~6 X - rt = Date.now() - ti;+ t, G) u6 D# e* H" {
- Thread.sleep(ck(rt - 1000 / fps));
! \9 b3 P5 T% Y Z+ V - ctx.setDebugInfo("error", 0)
. M3 F4 P% ?; L% O/ b8 J9 \ - } catch (e) {
, Q) ^6 ?/ ^3 X1 H( t% q - ctx.setDebugInfo("error", e);
# Z) i, d1 r1 O8 k/ n" v6 m. }8 m) f* x* b - }! E0 z) U" i0 |7 S* Y- }9 j
- }- c" u }+ b, g$ F
- print("Thread end:" + id);2 ^: `% T2 B1 F, L( Q
- }
4 R p' W3 X1 b A - let th = new Thread(run, "qiehuan");
1 A3 I8 h' i# g' [ - th.start();
5 s# B2 `8 {3 y. r2 Q - }
1 w/ e# s; g% i! M, z& n" V; N
# d4 O7 B. v7 o- _- function render(ctx, state, entity) {0 `6 i; z }5 \
- state.f.tick();
9 K3 A/ K3 ?- `$ r, ?: |& s - }
& k' {& b$ i5 C t4 j: D, e) I - / L* }5 U2 @" k% p% w/ R) j4 I
- function dispose(ctx, state, entity) {: v$ H* B- T9 G7 a. Q/ d3 C1 k/ ?
- print("Dispose");' D5 c7 S! w5 l; v) ?; d
- state.running = false;. }9 e) \9 R; |# W. e
- state.f.close();5 J" D$ q$ q: Z
- }1 t) _& r3 H' m. D4 W, u
- ' ^# V6 z5 C5 C; H, `8 ]
- function setComp(g, value) {/ R' o3 b3 O% E& {
- g.setComposite(AlphaComposite.SrcOver.derive(value));7 y5 C; v1 {& ?
- }
复制代码 - T O; p/ t i( f) 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。4 [1 C$ X8 @, v; g2 ?* p
/ S7 w, U- V N
! R" q, [1 ~# J+ X Q) T顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
) p) j4 d' g& A8 A9 T |
|