|
|
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 Q: f$ h5 k T# 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。
* b: [. Y! m2 ]! x x5 i. q- importPackage (java.lang);
) a) r4 w5 ]) h: A2 s' l2 J - importPackage (java.awt);$ J" {; k- |9 D% m( W9 }
- $ O- w! Z! e" l( f/ F! c0 R
- include(Resources.id("mtrsteamloco:library/code/face.js"));
7 Z5 o5 R% g. M [ - 8 `3 J6 O( z @
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);8 D+ I' o8 G2 d8 T1 k0 X" d9 \
- # J- e1 j9 X+ L& K- p5 X
- function getW(str, font) {
, M) ]- k6 M' d$ R - let frc = Resources.getFontRenderContext();9 W! Y0 K6 f7 N) M+ B
- bounds = font.getStringBounds(str, frc);2 q; U2 E9 N( V# u
- return Math.ceil(bounds.getWidth());
( x, h O+ u6 `* \! [8 a' _ - }
, C4 Y# m2 Q6 f) j K4 I4 w - + u% c) w! Y) r# s2 P& w
- da = (g) => {//底图绘制
# u' |/ K V& V+ e0 J - g.setColor(Color.BLACK);# P7 k1 A: h% j
- g.fillRect(0, 0, 400, 400);! ]" s4 V' n5 J3 e0 @! ?
- }
; _0 ^/ o4 [2 ^% C7 Y - R% Y: ~& R% f
- db = (g) => {//上层绘制" Q0 T1 @" q4 C- W, X1 d& M* e
- g.setColor(Color.WHITE);
R7 H4 R; }, M4 O: q/ K - g.fillRect(0, 0, 400, 400);: U! D0 W* j8 n3 D
- g.setColor(Color.RED);$ i* V0 Y X$ B, w) W: i+ v
- g.setFont(font0);2 h* u0 ^7 q" n2 h; ~9 y
- let str = "晴纱是男娘";# v1 o6 _9 A) }. I+ L6 C, p
- let ww = 400;7 Q2 v0 U6 r& `: |, S. n
- let w = getW(str, font0);
7 O0 c/ {. H* u4 C9 [9 i3 C - g.drawString(str, ww / 2 - w / 2, 200);, V, f5 l2 J' C5 j3 ^
- }
/ i6 s: Z" k8 Y& X0 ^! D
3 L8 C8 j/ [1 O; h- const mat = new Matrices();& J L/ p: ]; F8 f7 ]* _9 i
- mat.translate(0, 0.5, 0);
$ Q$ B7 W; z: i& e - % R; ~" R' |$ r& L" u9 J
- function create(ctx, state, entity) {
, ]: E* u, u/ _$ U( n* F - let info = {
; L. X; m G8 Y' f5 A; R/ e - ctx: ctx,* B6 m$ d" @7 _: D {- J
- isTrain: false,
: r, h; w$ G6 e6 W8 y+ I - matrices: [mat],/ z- B& U, j& e5 F& b2 C/ k
- texture: [400, 400],+ o& v8 D' d4 L' M6 }
- model: {
7 E; R1 P o4 u' [ - renderType: "light",/ I9 R9 \, P5 o7 ?
- size: [1, 1],' V7 b" R3 `8 c. @+ E
- uvSize: [1, 1]4 D% Q; E% x& _, i
- }
( n5 e; q- V/ H+ m# W - }0 C! |8 S5 m9 c2 ]
- let f = new Face(info);
2 e" v2 k5 j0 a5 j: J H: R' D9 L) j - state.f = f;
) [5 O, \# z- e C2 J
$ L/ ~8 x7 `/ @5 Z ^; `- let t = f.texture;
; r/ L& D' F: {2 m3 G5 O. x - let g = t.graphics;6 R% I# K8 L- i. l
- state.running = true;1 q! Y2 X: L4 F3 i) n5 X+ g- a. t
- let fps = 24;
4 d5 S3 C2 k0 R% {' s - da(g);//绘制底图
; |; t# x: b$ _4 m& U - t.upload();
% a+ O) ~' x. A - let k = 0;% Z- X- s! n# ?# G! Y9 l: a
- let ti = Date.now();! M/ Z V' p' m1 B# ~
- let rt = 0;# X! V! C' S& z" m% n1 Y/ t, c- y \
- smooth = (k, v) => {// 平滑变化0 _7 J: o. Y" n; o' W1 J: x$ k- y
- if (v > k) return k;4 S# D: R) o9 p/ g3 ?
- if (k < 0) return 0;8 X9 v" V5 ?! j
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
7 d0 O T3 [0 ~1 W$ t1 _9 m - } ~, r, i( s- y0 t% ?* y
- run = () => {// 新线程# _! L9 i- @" m( \2 y( T6 F
- let id = Thread.currentThread().getId();, w9 T# R+ w/ I! ]
- print("Thread start:" + id);! k' G6 n2 h7 d+ w- y" j( H
- while (state.running) {
* w; p. s, w& V- U5 W - try {
6 g: E1 H+ r' z - k += (Date.now() - ti) / 1000 * 0.2;
$ V/ Z8 \3 t3 F9 m - ti = Date.now();0 \) S3 k$ a9 F) e ]1 E
- if (k > 1.5) {3 |/ W. q) F7 k& j+ P' j1 K: f4 O
- k = 0;: D7 R. K6 f3 f; d* J" O- S
- }
5 `% g( ?3 T& a# b/ u: W4 \1 a - setComp(g, 1);% j1 R; ]' ?5 N, u
- da(g);, a) w5 X+ E7 l0 k' x( K
- let kk = smooth(1, k);//平滑切换透明度4 j5 B: P! B' S( r
- setComp(g, kk);9 N5 O5 S% n5 C | s+ k
- db(g);4 N6 p5 S1 X W8 v7 ^
- t.upload();2 e) ]0 g. F M% |3 ^3 _
- ctx.setDebugInfo("rt" ,Date.now() - ti);) C% G: w0 S) I
- ctx.setDebugInfo("k", k);
Y1 d! H- ^; E) m0 s/ P - ctx.setDebugInfo("sm", kk);
' X, \+ r$ O, }4 D: h4 } - rt = Date.now() - ti;
& h' m# x' Z+ O9 T0 A+ c& r0 s! Y - Thread.sleep(ck(rt - 1000 / fps));. b0 T p" O% `7 s1 D. k+ E
- ctx.setDebugInfo("error", 0)6 @# c# y5 G1 q# S- T( K# ~8 p
- } catch (e) {* e' t9 G9 q( x7 Y- y2 H- g
- ctx.setDebugInfo("error", e);! U3 T6 b9 h& j* R$ G* D
- }, ~% b4 K7 p8 w
- }- e b+ {0 u$ c5 i
- print("Thread end:" + id);
% _; F2 F( J8 p/ u - }4 Q- b, B( V+ n6 {* j
- let th = new Thread(run, "qiehuan");
+ G/ ~$ v+ b2 Z3 L2 v4 m9 J* f5 u - th.start();+ H- D \/ v2 Q* j4 l+ ^7 @/ g5 ^
- }
/ K0 H" Z8 t; M P6 o
7 x+ W8 p7 s# @9 k+ o- function render(ctx, state, entity) {, m4 k y) I7 ~. z
- state.f.tick();4 I/ J1 |# p+ s6 X& K
- }
- W8 v/ y! r" }% o# V! A1 ^8 p; t
( Q1 R) W- n" l' u- function dispose(ctx, state, entity) {
+ G- L( {) ?+ H' f/ L; B - print("Dispose");
, c# v; x# o) {3 G4 l - state.running = false;0 E" R" I. B' A3 o( i+ a+ n3 G0 Y: T
- state.f.close();
$ [4 ?% s8 T j0 n% u6 X1 T- z5 m - }
) T+ ?7 Y& _6 d# n. x* D - 6 E6 X4 p( I7 ?5 }+ l: k/ Q" e9 x
- function setComp(g, value) {
' u: J' \$ E( i% s( e - g.setComposite(AlphaComposite.SrcOver.derive(value));
. o; V; R4 c* g9 v; I - }
复制代码
5 v+ P0 m* E" U1 |& W" U7 b2 \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。& r1 O" v4 P6 ~ I5 S( P5 ]
- Q& J% j J% m" V$ ?* B6 l: C$ \( 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)4 c" y) |* X s* C* v
|
|