|
|
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
×
6 e% r3 U! l; C$ 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。
, G5 K) V0 h- h* E, l9 H- importPackage (java.lang);
" g4 a5 ?. W9 {6 t9 D2 a/ `) D - importPackage (java.awt);
A9 m- Z+ E9 C# m
+ R; L' E! Z: F% O2 G- include(Resources.id("mtrsteamloco:library/code/face.js"));3 g; H0 q/ d4 c1 M' b& \; s
- 8 D* [' h G6 [, A% P( |, N; j [ m6 K
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);# N) |6 w6 K: @. u/ ~( ?( I u! A
- - ?" L7 l+ P7 X- g8 Z: d
- function getW(str, font) {& A' x% w B9 |7 |3 \
- let frc = Resources.getFontRenderContext();
! D% F$ B7 {5 z6 o$ j6 n! H$ T - bounds = font.getStringBounds(str, frc);( d4 g5 G, l+ W
- return Math.ceil(bounds.getWidth());2 m1 u7 A# R4 |# {7 C5 A
- }
" u0 Y; B* ?0 s - - {( u6 V( c) Z4 f! f
- da = (g) => {//底图绘制
, z3 C) r' J3 o" K - g.setColor(Color.BLACK);# j) o/ V9 d8 d' F, w7 x; B) K: O! ]
- g.fillRect(0, 0, 400, 400);
0 x# O) p% ^2 v9 @ - }
5 \* O8 u* G# o# u2 ?4 |- L - ) u* Y2 m0 v {2 h0 _! ^( e4 S2 ]
- db = (g) => {//上层绘制
1 Z; r y7 f+ e - g.setColor(Color.WHITE);
3 x# v* @5 [$ w( |/ n7 g' f* q - g.fillRect(0, 0, 400, 400);# L1 q+ k+ o& b! m0 [
- g.setColor(Color.RED);( b- f1 B" ?. w2 ]! G# p p
- g.setFont(font0);
7 k3 u) p5 E- R0 }7 i - let str = "晴纱是男娘";7 E9 o$ ]- C2 `% i: r
- let ww = 400;$ i, c1 Q; X9 ?/ n3 w
- let w = getW(str, font0);
$ E( k& i% |, p* ~ - g.drawString(str, ww / 2 - w / 2, 200);7 Q" b7 p. x: `# c% h0 y
- }
. n8 }; y9 K! ]8 o - 1 h7 S5 L7 v: f9 j' v% |; ?3 c
- const mat = new Matrices();
1 y) q3 M2 P: w# j: T+ g# r* ^2 i5 d$ { - mat.translate(0, 0.5, 0);
0 T. i' R4 L; L - 2 N) {: s5 [! [6 k' \% @+ J% d% B
- function create(ctx, state, entity) {
0 s' p: Q' J1 W, L - let info = {
; u# Z: E0 R2 W+ G* z3 h% ?! y - ctx: ctx,0 o, P* n! _+ d. |
- isTrain: false,9 l k+ V/ r6 J; p, j
- matrices: [mat],
" y: z" E0 P0 F+ s4 _. q& [ - texture: [400, 400],9 q2 N( y7 y+ v
- model: {
% f0 N/ |$ ? x - renderType: "light",
3 w& g" J! h6 D - size: [1, 1],, X r- @3 K* o8 V2 D! M
- uvSize: [1, 1]
$ [3 P/ `- M9 w3 _ - }
. ^! b' m+ P* M$ I - }$ u8 e" U1 z/ m* x. w
- let f = new Face(info);* o5 C/ N, ], x3 C
- state.f = f;
) K" A5 u0 X' r5 Z/ b: F" _ - # C* v6 e: w# ^2 P. m" ~) V5 z. g
- let t = f.texture;* S7 f' b( z3 r
- let g = t.graphics;) C6 H, n7 A6 z+ x
- state.running = true;- j6 a, j2 H& `- h0 j- x6 g
- let fps = 24;7 `6 Q6 p9 c" x; E% q0 x+ t
- da(g);//绘制底图 m$ y5 ~/ s$ p' v
- t.upload();( t2 J8 s3 ~$ ?
- let k = 0;
8 V# V2 _) a5 u l1 I. L4 L7 | - let ti = Date.now();3 C9 M2 L7 e* f; F
- let rt = 0;
1 e2 P, S' O G3 G7 K - smooth = (k, v) => {// 平滑变化
# C, H' ^% \; g* {% A0 E* ?3 p8 } - if (v > k) return k;
8 U3 S- V5 U5 w" y. w& K$ q - if (k < 0) return 0;- W" b4 [1 G" M: s, h1 U! X
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
! T i" G3 c1 w! q8 Z - }
8 ?; z- ^0 f' ?' b$ y. u - run = () => {// 新线程
; U2 S7 ^5 ~% g1 V) T - let id = Thread.currentThread().getId();9 g9 o) o: E" N, G) B
- print("Thread start:" + id);
B9 s- A/ ^/ J* K. j; z - while (state.running) {' I5 D' L' Y6 }4 h- w
- try {
, B. ~. t: r5 u; Z5 b0 q - k += (Date.now() - ti) / 1000 * 0.2;
! `9 s: m3 `5 \. C - ti = Date.now();$ M; ~, e- m- |0 w: h
- if (k > 1.5) {5 O6 a9 F1 M3 N0 K, r3 S9 }
- k = 0;
' y3 d/ [4 b8 H/ s" S3 N J - }
# T+ R# E+ F1 e; ^8 s* }/ s( v - setComp(g, 1);
( j" ^. B- b* N" b* s - da(g);+ u) f' f+ F- H9 Z% H: O% d- q( x' E
- let kk = smooth(1, k);//平滑切换透明度2 V6 C2 o& _: f; l' [3 E# ?8 h( M2 j
- setComp(g, kk);! R l3 V* V# c
- db(g);# M& a6 a' O1 I! G' Q- B% W
- t.upload();
* i# D' q4 Y. L& } g - ctx.setDebugInfo("rt" ,Date.now() - ti);
; y8 K3 L$ {1 h s# k- |/ Y- N6 ~' X) d - ctx.setDebugInfo("k", k);
4 b, z p' R) n8 Y9 k2 C - ctx.setDebugInfo("sm", kk);2 C; g( Y+ j% | C4 _% y
- rt = Date.now() - ti;
* I; s g j8 n4 R" x - Thread.sleep(ck(rt - 1000 / fps));
( K7 W0 a8 ~ c8 t - ctx.setDebugInfo("error", 0). f* T' {# ^4 r7 i, o# O) `+ j% I8 V
- } catch (e) {
: k8 k$ A: f( G4 o6 e; ~9 X/ o - ctx.setDebugInfo("error", e);
6 q/ W$ ?/ K* a& f" d: V - }
4 `" O" x" h( S$ S6 Z8 y0 }$ [& h - }
- d7 X! e+ k& S- A; S - print("Thread end:" + id); P9 F7 L$ o& N$ E$ d% L2 q
- }
# M9 d1 o( w2 q9 b4 C% e2 ~ - let th = new Thread(run, "qiehuan");3 X, i) o& p5 `) e f: O; O
- th.start();4 @$ W) g% T% p* P: G
- }
, N4 X+ ~6 Y7 K8 l3 m5 {3 l - ) C( _; K ~5 K2 C e" T
- function render(ctx, state, entity) {
" c% k# @ e; Z) N( P - state.f.tick();2 W& ]( t! I) E7 G: C
- } h0 H. y- i2 M3 a# K: E3 L
- ( Q4 m/ J: w6 \- r
- function dispose(ctx, state, entity) {
V' H3 n% y/ m' V/ O' Y - print("Dispose");
4 E# d: D! A3 U* T5 n/ H - state.running = false;
; g: s( T) e5 z) |' ~' p1 M - state.f.close();# k) _4 l/ T6 {" c, P% |. u
- }* v; A1 [% |& u' `% H! r
5 O" B5 l9 J z, [0 h7 ^5 a- function setComp(g, value) {9 g9 b3 w% U! m' {2 J& O3 D
- g.setComposite(AlphaComposite.SrcOver.derive(value));) p4 D3 S) R$ w1 H
- }
复制代码
3 \; e# Y0 b! s+ I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。% D$ f" b0 z( |4 s7 Y: G) _6 h' c
# g) ~# e4 d$ M. |# Z+ t! R2 ~# H; L6 A7 R, v/ X: J- @" b( E
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
* L0 {* b1 c" u9 _; ~/ a: N0 q1 J |
|