|
|
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
×
( `1 k y* q8 R6 S; K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。
# A* n3 a0 K2 R- importPackage (java.lang);
# ^4 q- n) A2 A) J' U - importPackage (java.awt);
8 P P! m0 ]1 i& i# e! l
9 r1 X& w4 u. G$ z) \/ S1 E- include(Resources.id("mtrsteamloco:library/code/face.js"));
( @2 t8 N. o! J
( y- b7 S/ y' J5 h5 j- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
- w; P" K0 U5 {$ ] - : z! r" H+ F. I
- function getW(str, font) {* f6 y0 r# @; y
- let frc = Resources.getFontRenderContext();/ B3 u- |/ Y; P5 Q- }# `( g, b
- bounds = font.getStringBounds(str, frc);9 F+ N2 g7 p) Z% Z7 y, z
- return Math.ceil(bounds.getWidth());
! t8 W; z6 g8 s# s* I - }
5 O7 @. h+ A M+ D" M' f - ) W/ I% m& z5 t% f: e) N$ P3 I
- da = (g) => {//底图绘制
1 m+ V g0 P2 h- _" ~; P - g.setColor(Color.BLACK);
7 \" ]9 F- x- h# ^/ j/ M& q/ N - g.fillRect(0, 0, 400, 400);& y& k l: p4 e. W' k9 ]
- }1 N3 x9 t( j) J4 |" a \- A8 [
- ( B( l; a+ X. B/ L5 g, n+ ^
- db = (g) => {//上层绘制
* e# f. F) T, [, F0 i# n* q - g.setColor(Color.WHITE);
! O' `+ j( Q, q - g.fillRect(0, 0, 400, 400);9 V3 O) i# |. A; R! o m
- g.setColor(Color.RED);
$ `, k6 X1 t+ v; y' X( } - g.setFont(font0);
/ r* \- C% y2 r$ L; F - let str = "晴纱是男娘";; I5 p0 @' X2 C+ V) R
- let ww = 400;
% a* A2 M% w" M( F - let w = getW(str, font0);
5 O1 ~& _: C) M2 C4 B4 Y2 D - g.drawString(str, ww / 2 - w / 2, 200);
# B. |" a# F$ K' s v- M - }$ p- w: a5 y/ S" |1 ~
- 9 E c! A3 y- e; M/ Z! y
- const mat = new Matrices();
, y. N8 t7 s) x0 g - mat.translate(0, 0.5, 0);
- a, V1 d, c% o2 g* b+ }
3 n g$ R+ h3 e, a5 y- function create(ctx, state, entity) {+ d4 r# ?5 P1 {$ W; v
- let info = {+ d: q0 a: h9 o9 `! x
- ctx: ctx,
4 k4 d- Q8 x! }- T& X" | - isTrain: false,
2 b1 a' m9 a# A9 k6 }* _3 N9 c - matrices: [mat],; l0 M r0 Q. i) k% `) b
- texture: [400, 400],+ P- V5 c1 Y, D( {: F/ }
- model: {5 z1 r( s' I& i- o7 \, C
- renderType: "light",
$ [/ y, b* B% N1 P - size: [1, 1],6 h% C/ h2 P% _1 L: c9 H( G. S/ D2 u
- uvSize: [1, 1]( r* h5 T" P7 |: K! u
- }9 h$ F/ A# y5 T8 M( a# `3 w9 f- m
- }
* ~+ j& V% G$ @ - let f = new Face(info);; O5 h y* @% n j- t1 T4 Y7 A0 l
- state.f = f;
' E; ~% h) _; x; D
8 v$ M4 |/ x* K4 ^5 \$ |/ Q- let t = f.texture;
* k# Q( k$ \. |4 V9 u - let g = t.graphics;
' W, d) Y; K8 m5 r- \8 e - state.running = true;" N. }5 s, ?; T; r' ~% \
- let fps = 24;
# Z; N' G: g$ r; Q! X - da(g);//绘制底图: `2 I, z2 n- p' D$ ]" w
- t.upload();. g( n4 m+ p Q4 t4 \: g
- let k = 0;/ n( J, e: c% y5 r; v
- let ti = Date.now();7 X. s6 `! k1 ]" r" |; }# Q
- let rt = 0;
1 c0 o4 E& F. ?! D& B3 O x - smooth = (k, v) => {// 平滑变化
+ g* E( \& l/ a) G1 T - if (v > k) return k;
' l" `5 \( n8 x/ w" g - if (k < 0) return 0;- e0 l2 c3 U$ h8 K' u, T
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;) o! B0 o$ v/ m0 ]3 W& W0 `6 L+ f/ S: y
- }
4 f" N. \7 {! w9 m& ^: E5 Z - run = () => {// 新线程
% r* E6 u7 J$ A8 L6 H T - let id = Thread.currentThread().getId();# D* B7 W9 t0 @$ x
- print("Thread start:" + id);
7 V1 U. L& j# g6 z8 d) b - while (state.running) {; N8 \: u# A+ c% K
- try {7 q0 q0 g" O5 w$ T# U9 z% \9 E
- k += (Date.now() - ti) / 1000 * 0.2;/ z0 r/ p4 O S |) ^
- ti = Date.now();
6 q* y* O2 d. X+ }# e$ N" }1 R4 z1 G* K - if (k > 1.5) {$ {; S) N' [- o% l2 I0 i
- k = 0;% g7 `: u" s& q0 d
- }: P- D+ k! i" a4 s8 Z# p( @" Q7 k" z
- setComp(g, 1);1 T; Q! @4 L4 S, A* k& E1 x: @
- da(g);; {+ w1 j% V" M* Y, Q! u& e6 \
- let kk = smooth(1, k);//平滑切换透明度
" w( [. G, F2 Q2 x! h - setComp(g, kk);
& [# U8 ]( |+ u0 m- L - db(g);+ Y, a$ q! d" p. o$ B; u. s4 {
- t.upload();4 ^5 k8 X, |7 \' q7 Z5 h4 I
- ctx.setDebugInfo("rt" ,Date.now() - ti);. N( Z$ f; c+ Z6 V/ r6 S5 m
- ctx.setDebugInfo("k", k);: O' O! [5 R9 m# [
- ctx.setDebugInfo("sm", kk);
2 ~8 h7 u i: v7 n - rt = Date.now() - ti;
: M: Y$ ^+ C5 S% D+ I5 [& a. d - Thread.sleep(ck(rt - 1000 / fps));
* P* y' P3 f0 e+ J6 x p - ctx.setDebugInfo("error", 0)
' M$ c& M4 t9 V( u- G+ ~ - } catch (e) {: ]0 a _. l3 D/ i8 {
- ctx.setDebugInfo("error", e);
( N* X# W3 O6 K+ d0 F( o - }
& K& q; f7 ~( b* G# p - }
4 [" k3 o) w1 G3 P7 V; R$ p ? - print("Thread end:" + id);5 R* C7 a: T8 ]3 @4 |7 [
- }) t3 [; O! e3 u; C
- let th = new Thread(run, "qiehuan");( w0 R! s( G; _
- th.start();
/ `( Z; {- I% e$ F - }
% ]" x2 ?& i' z) D, B" K
3 |( o2 W! K1 J3 q- l8 W) I9 ?- function render(ctx, state, entity) {
6 {& d, U4 Q* k5 y/ ~1 z - state.f.tick();2 i) p2 j8 w0 A6 R- E
- }6 X" b7 N- E9 I/ q D- b/ |* y% v8 {
- , Z+ i/ N4 b7 s Z3 ^* M
- function dispose(ctx, state, entity) {- M+ n+ |/ w% g s! a* A" l) Z4 N
- print("Dispose");
; ]& k3 e1 L: X. @: D" j) F - state.running = false;# P$ u; m) h- b K& U. M
- state.f.close();; k% e4 {5 y( H+ g0 d* a4 J
- }& `/ w7 y5 s$ |. ]$ Q" ]8 D$ T; v. O! ^+ ?
/ W% v# X O6 i5 B# T/ a( z8 X* d- function setComp(g, value) {, ]" s* v1 {3 N# |; M
- g.setComposite(AlphaComposite.SrcOver.derive(value));
2 Q2 K! p- p7 m' H4 h5 R# |* j - }
复制代码 7 `5 a3 t5 Q' Y
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。
( X$ b1 `6 D; C+ N8 d. l" t7 [0 \) T) i w9 @% n# I
6 C0 y; n# O3 B) K; g% 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)0 t. l6 y; A5 @) i" j* ~2 h
|
|