|
|
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
×
( o8 S, i1 k" V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。
# I/ \7 a! y2 H( y- importPackage (java.lang);5 R) ~) A1 o5 f4 d
- importPackage (java.awt);# _8 M( C+ G3 @! U0 K& {
- , {4 B2 }6 p! y1 v- a
- include(Resources.id("mtrsteamloco:library/code/face.js"));/ @) |+ o" |; c, f8 Z5 R
- * \$ L) M) g, b
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
) |; k6 Y$ j: e2 ~
; l8 u+ u! D+ e) E1 Q, _1 M- function getW(str, font) {
6 h, f; H( l) q* c9 | - let frc = Resources.getFontRenderContext();
! u7 N6 x$ n% X1 a5 ?! e! j6 { - bounds = font.getStringBounds(str, frc);" H, x5 H& L8 n% O3 ^! u- U
- return Math.ceil(bounds.getWidth());3 T0 g( x* {2 g! P. H r8 C+ r
- }
; `, |" W, l' o: q3 Y
2 `# p4 z( G* m6 \0 C5 G1 Z- da = (g) => {//底图绘制
# L" ^3 n$ {; i! i# x; `$ b - g.setColor(Color.BLACK);
5 p; [" C; e0 ^ - g.fillRect(0, 0, 400, 400);
9 u+ v6 L3 C+ b" \ - }
3 f5 Q( S3 o- A' p8 I2 F - 7 }% Y! |% r6 v& h& {5 }3 e
- db = (g) => {//上层绘制
" Q+ q( D- l: N" c" x - g.setColor(Color.WHITE);; e: q- G: s6 F: g+ o$ S1 ]) t9 [
- g.fillRect(0, 0, 400, 400);
+ W+ r+ i: E+ `! I x. l - g.setColor(Color.RED);! |- F' K8 f: S1 y- t8 r
- g.setFont(font0);
, X( I& F) }; [! W" I: d( z h - let str = "晴纱是男娘";( {; }& Z1 L/ Y* u- f, R/ v" Y4 T
- let ww = 400;2 u/ g9 K' W1 C* b, x, g; ]6 o
- let w = getW(str, font0);
$ n; N& T9 p# T$ Z5 R - g.drawString(str, ww / 2 - w / 2, 200);: P7 e( o6 B( G2 V7 b) S' d
- }4 Z9 m" T: _1 Q/ i; C# ~( k
& ~0 O0 y* W6 o3 T. Q; i. ~9 p- const mat = new Matrices();1 t7 k$ Z. m: u
- mat.translate(0, 0.5, 0);$ |+ C0 N! A1 \
6 ?" [5 y3 u4 F1 L' x; F- function create(ctx, state, entity) {
4 `% Z0 e+ M2 E$ Z - let info = {3 t( h0 X0 j6 x
- ctx: ctx,
Z; f8 x: C4 @. | - isTrain: false,9 ~. C) l. C+ A5 p$ L% D: |
- matrices: [mat],+ }9 g3 Z0 q) Y2 R4 ]) q/ b
- texture: [400, 400],5 j a8 q! U6 F/ v3 S j5 j" X. \
- model: {( _. q9 d' ?; J F/ Q$ j! q) O
- renderType: "light",
* n6 G) W: T! j# \( Q - size: [1, 1],
- ^" I3 X0 @6 x: z - uvSize: [1, 1]
, `/ c# Q8 C! n+ k - }
* M- P8 L6 v, i, p) h% \0 ? - }4 F! S6 B0 n% T" B* B0 g
- let f = new Face(info);: e1 V' J" \; c; s2 P+ t
- state.f = f;: Y' b7 B3 \% J0 B
- % J7 z8 u. g& Q# A
- let t = f.texture;0 `) {$ I$ _2 i! C1 l0 [2 q
- let g = t.graphics;4 M/ X, [/ X1 p+ } j* l* [# P
- state.running = true;
' Z* ?9 R6 r, l, \# h! o8 V - let fps = 24;8 i6 w$ w, M' {7 W& I( f
- da(g);//绘制底图
2 H; R8 I0 F& X - t.upload();% c! \0 Y8 E9 K8 I( C
- let k = 0;; A* ~5 c7 M$ [5 ^# b
- let ti = Date.now();0 }0 _% S8 M" k) F% T/ H2 x# ^! `
- let rt = 0;# s _( l% E& P ^8 f
- smooth = (k, v) => {// 平滑变化! \; F l* o! i
- if (v > k) return k;2 G- n9 x& @) l# P" h4 |6 B8 o
- if (k < 0) return 0;8 O3 i$ L: n3 K0 z: t
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
- ^- a7 B( N" j; ?( }/ m9 N6 M; s - }; v+ ?7 |8 }2 m: h6 j
- run = () => {// 新线程% p) p8 B# R" q: @
- let id = Thread.currentThread().getId();
) _" I( `9 G9 J/ p: O5 T- Q - print("Thread start:" + id);
3 N- M& ]7 D2 }, m J( U! G - while (state.running) {
0 y9 o# a0 V# K9 t; }: b - try {
4 a4 e: h9 s. o - k += (Date.now() - ti) / 1000 * 0.2;3 j2 n9 t9 ^7 L) T2 ?
- ti = Date.now();
0 e2 n1 V1 X7 G, p. e S4 z - if (k > 1.5) {+ O# V' o# m! l; c0 b
- k = 0;* ?- |2 L- A3 ~( @
- }
' P7 [+ K+ w: o0 n5 @ - setComp(g, 1);) @& m5 C; M4 Y
- da(g);
]7 R5 t" k3 l. f$ G* B - let kk = smooth(1, k);//平滑切换透明度
7 B# y6 ~8 m. @2 c+ Z* b - setComp(g, kk);6 M% V P& h: x' Q* F
- db(g);% D2 |( g' H' W
- t.upload();
8 j; U/ G o, _9 o) q4 t5 \ - ctx.setDebugInfo("rt" ,Date.now() - ti);
6 R: d1 E1 k# {1 l3 v( S& T+ s( p - ctx.setDebugInfo("k", k);
6 I d+ {4 R" _# \* h - ctx.setDebugInfo("sm", kk);- q( P3 N1 \) W5 n2 e( n+ H. U
- rt = Date.now() - ti;. x+ j1 Y: d# {6 V
- Thread.sleep(ck(rt - 1000 / fps));0 V" u5 `7 k! r. A1 e, Q
- ctx.setDebugInfo("error", 0)3 E; r9 u+ P4 o% R. O) q, [4 d
- } catch (e) {% k% _: b+ C. A; I6 _% v
- ctx.setDebugInfo("error", e);
+ Z! G! ^! ^$ N$ L& | - }
; t+ G V; k: Q. R5 C - }1 M1 C$ y: s1 ~2 l( I
- print("Thread end:" + id);% _: u: ~1 [6 E$ t
- }
1 s4 `4 ]4 ?( x* h - let th = new Thread(run, "qiehuan");
4 _' n3 K V6 d6 _: b - th.start();
. i+ k- u# P( ]8 \' {9 y4 l# l - }. J U& Q8 x' K! N8 O1 K' f
- - k! L3 a' r2 p: P
- function render(ctx, state, entity) {
- Y) \$ L9 X4 H - state.f.tick();
5 y7 Z0 T. f' b" r E& c, c - }
# Y1 R( K$ ^$ f4 \$ l
0 y6 j% u" u& O. D6 m* y) ]7 L- function dispose(ctx, state, entity) {
* M3 b8 w' c. t% l - print("Dispose");5 s8 P# i+ p9 f1 U
- state.running = false;
2 K: W! d0 ~8 |' J* | - state.f.close();' K2 j2 l+ f' Z5 U! @: Z/ M7 S
- }. i. ~2 B) i! O5 F9 X( m8 C5 F
' h7 j# @, R# ~4 T+ N- function setComp(g, value) {, J+ Q9 g6 S, B$ q
- g.setComposite(AlphaComposite.SrcOver.derive(value));% ]7 s: m& H8 y# @
- }
复制代码
8 y% d' ^& \( X" q# W, u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。
, O: A5 m; W: _' Y; q' k
% `9 d+ d6 S" r; u6 Y' {) a
" w" U; `9 T; T4 F9 t4 L: k& E( C顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
, |$ V7 }, K/ r; x7 Y |
|