|
|
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
×
$ E; H, X: C. c# A/ i( R
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 W! C4 i: W! C& n+ J( e
- importPackage (java.lang);
+ |; g9 ?+ G M7 J4 [+ d - importPackage (java.awt);4 H0 N: s: Q7 P" J
" H, e+ C4 X$ ], i# l8 K% i9 Q1 a- include(Resources.id("mtrsteamloco:library/code/face.js"));
, D9 v A' X7 c
4 B0 ^0 K2 G+ k3 y! q8 y* r v- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
7 u+ i/ s$ S/ M9 @" o4 V2 ~: R5 ? - ) ?0 t! e5 |* W9 P+ i+ h4 L7 ]: I& \
- function getW(str, font) {0 s) b; u2 K" m
- let frc = Resources.getFontRenderContext();$ F4 |. Y% Q) G/ h3 v5 u( o* ^3 r
- bounds = font.getStringBounds(str, frc);% R/ q, H; t- v$ X; @7 @
- return Math.ceil(bounds.getWidth());4 Z+ |$ N. s% \! D- Y5 s4 c
- }
9 |8 c" B; ^4 e0 z2 ^; w4 b8 C - 4 ]5 J* R. Q& [4 \/ r% \: i
- da = (g) => {//底图绘制
, {1 Y! a1 ?7 m - g.setColor(Color.BLACK);: h8 R2 a: ~3 q1 p' D# h- P( y
- g.fillRect(0, 0, 400, 400);
5 w' y: ~; [6 ]. m2 A5 P- x - }& O1 M7 x! ]% v" i/ N6 ?8 |
- 1 @7 b5 j6 A, p+ V8 L
- db = (g) => {//上层绘制
- T: B$ V5 ^4 ?, B" c/ {& j) ] - g.setColor(Color.WHITE);
1 }; M R& O/ t. p0 y+ { - g.fillRect(0, 0, 400, 400);
* z3 [2 c# w- S. Z; l8 V - g.setColor(Color.RED);& W0 K& P; D4 n. Y- b+ S! ?
- g.setFont(font0);
& ^% }5 _( h7 v - let str = "晴纱是男娘";, b- `) U0 Q6 j* {. I
- let ww = 400;( e7 ? {) x' f& r! B+ \5 L1 Q
- let w = getW(str, font0); f F& \# A0 B. L' O+ N
- g.drawString(str, ww / 2 - w / 2, 200);/ G) y7 G! V8 u, h
- }9 d1 m1 H* h w
- ; k( K- @1 _& d( D# j2 V
- const mat = new Matrices();
) f$ v8 C- m' ~' s9 ] - mat.translate(0, 0.5, 0);
4 u8 u: k+ N. _. @! f. s2 q2 | - * o3 \, Y6 K# h" k, }4 Q8 [8 i8 } h
- function create(ctx, state, entity) {; A9 A2 D7 |$ k: b" {2 \
- let info = {
! U, C$ [9 Z* a' D1 _ - ctx: ctx,3 C$ }- B1 G- N/ `- z
- isTrain: false,
0 B2 N' t; m- Q0 ?- c# w - matrices: [mat],
8 M7 x8 F# u0 s F - texture: [400, 400],0 e, A+ X, z& }6 k# X
- model: {
5 D- K7 @7 B0 L1 f2 H$ N - renderType: "light",. H4 z0 Y" l9 x& ^- `
- size: [1, 1],
! U& }) w. {0 J2 X5 @ - uvSize: [1, 1]
$ C1 `8 p0 j5 s e) X& u) ? - }+ X: k3 d) Z m/ [/ j; d
- }
% R' q D( v" K3 u( W - let f = new Face(info);
' I% f' V5 u q4 e1 L) K' N7 ] - state.f = f;* s1 Y' P6 h3 I+ D1 c4 X6 Y. y r
4 J) ~) b" M0 X* u0 r( y8 N I% t- let t = f.texture;. P+ q4 }( d2 [: D% Z
- let g = t.graphics;% z' {* S8 ]( w; n
- state.running = true;$ @- d2 S' Q: k3 u2 l! u
- let fps = 24;' d: i& Y- u5 V E- O
- da(g);//绘制底图
. r( A& W& z% q - t.upload();
! g8 N0 W( U/ [& N) w: n - let k = 0;( J( t4 v2 m6 T. r
- let ti = Date.now();
5 B6 F! j t3 I' U2 C6 M - let rt = 0;
s3 P" j$ G/ q* x, U - smooth = (k, v) => {// 平滑变化
+ ? }- }' n9 z" _6 H6 \& _5 @ - if (v > k) return k;& e2 u% Z `/ ~7 M, h
- if (k < 0) return 0;
/ h3 J. x' b [1 B8 S' m5 h ] - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;: @; s' a7 g( [% l# {2 W- q
- }. V6 b+ i' V) u6 i4 A/ H4 b
- run = () => {// 新线程" N6 g/ |" y0 [* [& }$ C- K
- let id = Thread.currentThread().getId();
. `! b* A5 u% m - print("Thread start:" + id);" [9 r2 O% O& V9 W
- while (state.running) {! r8 a0 Y, B& y' G
- try {
( P! z( P- f9 I5 F) \$ M9 I - k += (Date.now() - ti) / 1000 * 0.2;
: f% [9 ?2 c. D$ r4 b - ti = Date.now();8 w- q Q+ M: n! o0 U! T
- if (k > 1.5) {
v- n) ^' v% Z5 K& `3 v - k = 0;
6 C' Y" i3 ~2 {6 k+ T% L* J - }9 q7 R' R/ I6 m6 m
- setComp(g, 1);
5 g# |* s5 x, m# v. {+ S# u2 G - da(g);/ w2 F! P$ r/ P4 q' T' h2 n. U
- let kk = smooth(1, k);//平滑切换透明度
8 f" `* `# R2 Z7 ^; B' A3 b - setComp(g, kk);
5 z- N( l- j& @+ S" c, j4 b0 H: E v - db(g);0 N. M0 N& M: j; e1 g
- t.upload();
2 _& \% U4 @+ u - ctx.setDebugInfo("rt" ,Date.now() - ti);4 z# x1 N1 V" W( ]( w
- ctx.setDebugInfo("k", k);
" v5 l0 K* _+ ` h& ^* n - ctx.setDebugInfo("sm", kk);* n: @' g% i! m6 C2 L
- rt = Date.now() - ti;
& F |+ x1 T, f8 Z8 P - Thread.sleep(ck(rt - 1000 / fps));
7 w" B' N% F6 V* [ - ctx.setDebugInfo("error", 0) `1 L" q7 X- c- ~" U; T2 m" K+ w0 A
- } catch (e) {: b7 S; Z: \! H6 O4 E
- ctx.setDebugInfo("error", e);
. k9 S, p+ |; Y+ ]; e1 C g - }
# C' o6 h: |" t) \7 h) N+ A; D. [& W - }
* I4 p4 ]- e0 c' _ - print("Thread end:" + id);3 d/ v7 Y W* d
- }5 n' B9 G0 h2 c8 w! c
- let th = new Thread(run, "qiehuan");# f- E5 q1 q2 d" }# o7 K
- th.start();/ @/ h: V4 I/ w. u% V
- }
2 m/ M+ U* w' U
+ B! g. D" r6 \: y6 L, V% ]- function render(ctx, state, entity) {7 v7 J# R0 E6 Y7 R
- state.f.tick();
1 K3 V# S4 v2 S9 u5 O+ I! z - }) v* D, {) M4 ^& L4 D2 g
8 ~4 H: z8 ~9 k2 j( `4 w- function dispose(ctx, state, entity) {, V& k8 W$ Y/ t3 b1 x V; f _! t
- print("Dispose");4 s& J( c/ r2 g% q3 F) S" c- @4 I2 p Q
- state.running = false;0 ~* d2 q) @; T6 P' J
- state.f.close();- o! Q2 W, D/ ~* y, R( C
- }
( g/ J2 f. {, S) X+ m& x8 h0 g$ ?( d - $ n& g4 {9 r. v) e0 }
- function setComp(g, value) {
6 p6 ~) d3 `6 W2 L/ F: z0 ]1 f - g.setComposite(AlphaComposite.SrcOver.derive(value));& Y9 y- T9 K- A& n' m
- }
复制代码 ; }, O4 K3 e, s' f, T! Z$ F
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。/ Q0 d. ^% Z5 @; ~5 I$ |
# }* K% t+ X3 r" T; `7 r& B2 C0 O8 k8 s+ {1 j
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
* Y, ?) S7 Y; A) j* X3 I5 q0 c9 w+ d |
|