|
|
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
×
* G9 ]( ^0 P2 G( g9 d
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。. `$ E R- v+ @) h# d
- importPackage (java.lang);) g! I* y' x) S# y8 O
- importPackage (java.awt);8 {0 a% M6 H& i$ O
9 V9 D1 F6 g4 p. J- include(Resources.id("mtrsteamloco:library/code/face.js"));+ M# x: W* R3 G4 T
- " Q: x4 l2 y/ I8 L6 e8 Z2 u8 m
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);( g( g9 I+ d" O9 W
- ; K# V) i) W( @% S: i
- function getW(str, font) {
; _: N1 p5 U0 V. {3 g$ f6 @ - let frc = Resources.getFontRenderContext();% K4 }: K/ z) N0 [5 _4 z O. ]/ `( V
- bounds = font.getStringBounds(str, frc);9 [1 h- O1 I; H0 y# I
- return Math.ceil(bounds.getWidth());
# Z) ~6 e" e$ g: F/ e: L - }- Q# W) [: s/ ^7 C( Y7 c
- 2 ]& o C) @% ]3 P7 l
- da = (g) => {//底图绘制8 \, N R3 x @" a+ ^$ h. _$ |
- g.setColor(Color.BLACK);) E: [# [$ N( P- x
- g.fillRect(0, 0, 400, 400);2 D$ w/ N1 v" t# i1 H& ?- t# v
- }
6 q- O3 V/ ]9 a: V7 F: K/ v8 l - 7 B; Z( o0 O" z% {: S8 d0 K
- db = (g) => {//上层绘制
: T0 ^+ |' ?* T' m. h! D - g.setColor(Color.WHITE);' i7 B8 l( d9 K0 o) l
- g.fillRect(0, 0, 400, 400);% z$ N7 `9 b2 b
- g.setColor(Color.RED);3 c8 ?' y! y9 u6 H1 C
- g.setFont(font0);4 Z# G' b6 |) @1 S
- let str = "晴纱是男娘";
$ z- a F' ~# c. D3 L8 Y7 S8 G- ` - let ww = 400;6 b" c: E2 V8 W# u$ x2 R
- let w = getW(str, font0);9 q) W* Y! d: q1 T$ a3 a
- g.drawString(str, ww / 2 - w / 2, 200);2 ^7 V) ?. f6 h
- }+ \ I. v' P8 A" b. }' {6 Z9 ?
2 \) l" a4 U; U1 I) h- const mat = new Matrices();
2 r# Q* X1 C+ w6 G) z" n3 | - mat.translate(0, 0.5, 0);
4 o1 m; g4 E8 T
, l9 E1 D2 F7 ^0 P( ~! J- function create(ctx, state, entity) {
- l: h# j) j3 |) k; |$ [5 p - let info = {( R2 g5 i% z: Z9 I8 l$ d
- ctx: ctx,
( ?2 X7 d4 z3 K; a( n - isTrain: false,
7 I8 a5 W9 D- o3 s* K - matrices: [mat],
# k$ I* s# N" } F. P, r- O - texture: [400, 400],# \2 h% n i, t7 c
- model: {
* t$ z% p; D' I, N% E T! y - renderType: "light",* ?7 E1 E4 l$ W& {; h3 p* R$ Q1 H
- size: [1, 1],
/ l+ J/ t5 }& n B% s- c% _0 X - uvSize: [1, 1]! U' ^% o+ ~: Z8 h6 L: E! o
- }$ }/ Z1 {6 B; O) `2 M3 e# G. e% z
- }
2 t: F v) d+ q0 E6 ]* | - let f = new Face(info);+ g |+ U) K3 l" V6 `
- state.f = f;' `# |7 W* M, v" t4 n8 D
- 9 c* e6 Z) H y9 {8 o5 a3 t. }
- let t = f.texture;
! @- [9 Q, U6 t$ W - let g = t.graphics;
/ l \4 p2 z, ?; S ^ - state.running = true;8 _8 j P( D$ d
- let fps = 24;
0 c9 p* @5 \- y - da(g);//绘制底图6 D( H' _9 F2 |1 L, H: ^
- t.upload();9 G1 l( G8 u* P3 i9 V2 W4 a5 z6 y
- let k = 0;; j+ L( ?# `$ i2 b
- let ti = Date.now();
6 a. q7 k4 M2 a* d7 D+ z - let rt = 0;
( u5 S+ C& m* n" u# A3 B - smooth = (k, v) => {// 平滑变化
" e- n$ ~ N$ E: y' G - if (v > k) return k;8 ]. C `' r. ` C1 t/ S
- if (k < 0) return 0;/ `; z% o& i u: `& @- V- \' a' [
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;$ I( E; O& S: a
- }
) T+ g6 v7 O# L - run = () => {// 新线程" Z$ v+ v1 s% l2 E* c
- let id = Thread.currentThread().getId();
! S* E2 N. s) ^8 K1 [1 A) O - print("Thread start:" + id);
# W! b( c7 {" m8 t% }2 @& e - while (state.running) {
! d" w4 N2 b- P K5 ]* t - try {
' D' y. `- D" ~8 Q+ C - k += (Date.now() - ti) / 1000 * 0.2;$ U7 ^' A% }5 ^- L$ i7 ^
- ti = Date.now();
0 A4 F: l9 z7 B$ r - if (k > 1.5) {
0 A7 X: H8 o' [. u - k = 0;
; E4 S+ n8 ]% F, t/ s; G( ` - }) i2 J% F1 M+ v- j" g* O
- setComp(g, 1);
6 D, H/ K3 N; _% L/ R" U - da(g);
8 C( l: N2 g* e - let kk = smooth(1, k);//平滑切换透明度. z6 Y& z% x5 O$ X* A- e' R3 T
- setComp(g, kk);8 f5 |4 {) C" _3 U
- db(g);5 ~7 ]( ~" e" [: R$ p0 L% X% B8 y
- t.upload();5 R' [& J' J5 \' r
- ctx.setDebugInfo("rt" ,Date.now() - ti);
$ M+ K* p C1 R - ctx.setDebugInfo("k", k);4 n4 `# W$ D9 n( g
- ctx.setDebugInfo("sm", kk);! u( b3 H& Z1 |4 [5 x& i( m
- rt = Date.now() - ti;
F" n$ n0 s* A4 u1 m/ J6 Z X - Thread.sleep(ck(rt - 1000 / fps));& Z: j2 G2 X0 U( o) H( D
- ctx.setDebugInfo("error", 0)
( d: w8 G, |( o2 K0 [ - } catch (e) {2 g$ U4 P1 B* F$ ^" D% p: M
- ctx.setDebugInfo("error", e);
4 V! E+ G6 W4 c+ Y - }# y+ N' ?+ B' ^( Y( h$ G4 l, w
- }! l; r6 L- i- }. A* n" {
- print("Thread end:" + id);* y/ t; { p+ e" I
- }3 T( L. k+ A2 Y" q E3 M5 }7 M% R
- let th = new Thread(run, "qiehuan");
3 ^3 A8 E0 |$ E; M - th.start();: G7 T" m) R7 l: e& q
- }
( V6 B& z3 Y F) O- a5 q( F" K* I - $ C- C$ E0 }/ }* [
- function render(ctx, state, entity) {
/ e' P# l" ~0 W; a+ W7 K4 W - state.f.tick();% M. C3 T2 e3 a: R
- }
: W9 [2 c: Y9 z2 Z8 c* ^ - $ v6 n% {7 r0 w. i7 f
- function dispose(ctx, state, entity) {5 W4 `5 ^. e) e2 Z' Q
- print("Dispose");! g/ c: O; [7 f( b
- state.running = false;
3 W$ f2 ?1 j& \( R1 Y" d) S' T. |( v - state.f.close();
7 @+ ]- @" }- [1 [ - }
. _$ u3 y. t7 m5 o V - 0 ` W% z* Q; g
- function setComp(g, value) {* O i- [$ h' G: `
- g.setComposite(AlphaComposite.SrcOver.derive(value));
$ j3 n; O- r! @' U9 H- a( C2 | - }
复制代码 j0 g$ |* f8 e5 W% }
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 M3 F, @0 Q9 g! q" Y6 ~1 `" N; e3 g6 T* Z
( U; l$ y9 l" 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)* S/ d- M1 s2 [6 f: Q& l
|
|