|
|
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
×
9 K! U2 L3 T7 Q: A
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。
! ]" ^8 A3 v4 n5 K1 H- importPackage (java.lang);4 A$ m5 H/ n! s$ J! S7 s e( W
- importPackage (java.awt);/ b, L2 ^7 ]) l) i( X, V
- / h2 n8 x; n/ i( R: F
- include(Resources.id("mtrsteamloco:library/code/face.js"));# ?% ? ~5 W6 D2 m7 w* W- W
# J& F1 _7 {/ X+ O: Q! B- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
9 F9 Z# c3 p& K& _) x0 @
# [. [& `) _# K. A* X( E- function getW(str, font) {7 M$ a# [4 W3 S* f k
- let frc = Resources.getFontRenderContext();* b4 K g$ Q. H J0 e# ~
- bounds = font.getStringBounds(str, frc);" F* U' ]2 g; R' W# m
- return Math.ceil(bounds.getWidth());" o9 r! L7 o& D5 }
- }+ [) R% I, A9 L/ q
, m* b( N3 u& a' H( s3 g: J- da = (g) => {//底图绘制8 x( j- o5 |9 h; ^0 r/ s. z
- g.setColor(Color.BLACK);
) c! ]* r( n9 j3 r5 t" D4 K - g.fillRect(0, 0, 400, 400);
( w8 J% B0 U5 | - }6 q* S+ k' K" s% Y4 c; J" Y/ }$ Z
- 0 a" Z5 L3 P# w+ H* x
- db = (g) => {//上层绘制5 o/ Q8 G$ w1 ]: R0 o. n
- g.setColor(Color.WHITE);
% ?6 h0 _+ i; ]: ^7 K; U - g.fillRect(0, 0, 400, 400);/ J7 x" K. v, ~# O1 J7 }
- g.setColor(Color.RED);% N3 g5 c4 U; I3 o# I0 Q9 v3 _
- g.setFont(font0);
# k4 h& |. ~* M3 E, ? - let str = "晴纱是男娘";5 P7 M0 y) u- F
- let ww = 400;% u: v$ W: K) o( e3 r. t5 E4 q
- let w = getW(str, font0);" @, o# A4 \8 E5 G+ v
- g.drawString(str, ww / 2 - w / 2, 200);$ |& X1 u* \0 I* a# n y5 f
- }
& S1 ^: d' j- v" C4 A3 N, { - 6 s2 |1 S6 c! `, s3 X2 r9 s% G
- const mat = new Matrices();
P; M/ r6 ]" T- F - mat.translate(0, 0.5, 0);
6 @0 T" a7 [0 [) Y! L
3 C0 Y& `( J# U- function create(ctx, state, entity) {* R E% E- t3 {; @, [' I7 J& U
- let info = {
+ f# l5 ~9 t* f! W - ctx: ctx,) W# E* c2 A5 A N, \) X0 o
- isTrain: false,
. r! ]3 J6 A1 `# t/ k% | - matrices: [mat],
" i2 l- f, P( d, A5 [: K+ s - texture: [400, 400],$ X/ ~. ]8 Z/ r
- model: {
* K; [( o% ]" F+ I - renderType: "light",
; E$ s# s' \7 A8 `# q( v& y$ z3 t q5 @ - size: [1, 1],# c% p. W2 `+ V' c
- uvSize: [1, 1]
9 c! l; Z9 a) `9 G, i - }
4 ?, i$ o6 W1 Q" V2 M s: ?( \+ R - }
1 \6 P# p( O8 d; k7 Z* p7 b - let f = new Face(info);
( O" R! p# `' f5 Y - state.f = f;
+ ]" x6 v# @4 a, k% P
3 m; p( ~8 A* C0 R% F- let t = f.texture;
7 q6 G! u% g: X' T# [5 j9 p - let g = t.graphics;' [$ t$ j2 r& P6 l* ]3 D
- state.running = true;( | Y3 d/ e7 b# H6 [; _1 ~4 e* q$ T- e
- let fps = 24;% U1 _# e! O; C- i+ u9 a* M
- da(g);//绘制底图3 ^ Z6 t" C: N/ n$ \
- t.upload();
6 q& V9 z4 l3 R4 {. b - let k = 0;
- q7 w+ ?- k3 s' O1 Y; N% D - let ti = Date.now();
! H7 r; q9 A8 J! g - let rt = 0;& h; T/ [0 a* r' c) q- x
- smooth = (k, v) => {// 平滑变化
2 D& P% c: w& J; r4 Q" x3 @& x - if (v > k) return k;) y9 `( c- c* \! t4 A
- if (k < 0) return 0;4 A1 R, K0 v/ U
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;& V: x% X9 u. ?4 F- ~/ y
- }$ f% M6 Z- s+ M; z
- run = () => {// 新线程
4 u7 o8 {% T: t - let id = Thread.currentThread().getId();
( i- F, g+ }8 z( i - print("Thread start:" + id);
6 Y3 O2 N, \& N$ f; X - while (state.running) {
: X3 Z" [) W9 r; b* N - try {) o9 |2 s" \6 t1 I* D. @
- k += (Date.now() - ti) / 1000 * 0.2;
! x2 z8 T, ^1 u& x, p - ti = Date.now();
" }2 Q( a6 r! E' e& @& u2 I - if (k > 1.5) {
1 R& f% l6 Q' f7 m! ~ - k = 0;
* t( P7 E( m4 [/ h. ] - }
" e; ^; a8 Z6 _* J" X6 ` - setComp(g, 1);+ j) I% b/ v( E$ |5 h1 |
- da(g);- i' n H/ y5 x+ F0 d) O
- let kk = smooth(1, k);//平滑切换透明度- `1 m9 k, B+ C! W
- setComp(g, kk);1 M K M. Z2 `8 o5 `) f
- db(g);: H5 }) z0 \5 Y7 b V( G9 \3 ~
- t.upload();4 K/ P% v y' j5 j
- ctx.setDebugInfo("rt" ,Date.now() - ti);
2 c7 r' x' p, l: S. z1 N - ctx.setDebugInfo("k", k);
0 U2 ]$ [, |9 {. k4 B6 U - ctx.setDebugInfo("sm", kk);% |+ g. v7 b, p0 |9 {
- rt = Date.now() - ti;
4 X) X. V% ], o3 j N9 ~ - Thread.sleep(ck(rt - 1000 / fps)); D4 [4 K D# Z4 L9 _
- ctx.setDebugInfo("error", 0)9 V5 [3 p5 E Z3 V$ y
- } catch (e) {( ^# X% h4 N/ G; B
- ctx.setDebugInfo("error", e);/ }* ?5 W6 ?3 F: ?* I0 t! `7 T
- }& j1 X" L8 ~7 y, `7 ~5 ^
- }5 \. z. p& C$ d- u( f7 }0 Q$ l) A
- print("Thread end:" + id);! d( b3 p1 [* a& v
- }- n1 ` |! u( ~- I% S
- let th = new Thread(run, "qiehuan");' X6 L( }4 H8 a. W# \( A) J
- th.start();: c; ?' l( ?8 L5 O+ x6 o
- }5 g) y6 o/ a" V7 A
) j2 }4 r; K1 Z+ O$ w- function render(ctx, state, entity) {
: |1 o& ?6 y# C# G4 `3 t4 v - state.f.tick();! C0 k$ f$ P6 c3 [# d8 i
- }5 L _+ t: A; _" h K8 j& F6 c1 h. d
% {8 ?# @( i) _4 [7 g% O" _- function dispose(ctx, state, entity) {
8 k+ Q3 R8 W F# e$ j - print("Dispose");
5 }2 `, R5 V; z0 d/ N - state.running = false;
; D6 p. a$ V- N! N6 l - state.f.close();( E( s7 Q% i! R. H. J* {; [ I
- } C9 F7 J1 f3 l, J9 X [6 ^) l* e0 y
- 9 M8 f* Q- [3 q+ Q' O' F! l/ j% A( I
- function setComp(g, value) {; c" q- W* D T$ l. Q& u
- g.setComposite(AlphaComposite.SrcOver.derive(value));
# v, Y" b. \# z$ R8 S+ c* b( T* U - }
复制代码
+ ?) g$ z) g* a+ n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。
. S% ^) v; a( P% n8 `/ F( K$ T9 K8 w' w8 Z: K, \9 e$ f& |
0 C7 a& K$ }6 D+ I! [顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
2 h/ h/ G" `, |! D* F, M. d |
|