|
|
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
×
: s3 f D' s7 \2 m. _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。3 A/ C- ?; T: |2 D
- importPackage (java.lang);. v B* u! e! P1 {3 ]
- importPackage (java.awt);
# C- _- y/ H; {+ v1 E - 0 q7 M. g: s' [7 L
- include(Resources.id("mtrsteamloco:library/code/face.js"));* @2 Y [2 B o5 @+ R" X
1 u4 Y8 `' {* }: F6 l: `- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
5 Z/ W2 V0 _" C
( B" c2 C1 ^/ n$ ^, N- o: @- function getW(str, font) {/ F6 x$ _& z6 ]& r+ A& [
- let frc = Resources.getFontRenderContext();
4 Q) e, k2 k* e2 o; {/ X - bounds = font.getStringBounds(str, frc);
e$ [( g/ y" j+ b# S - return Math.ceil(bounds.getWidth());, ^7 Z. K: ^) D) ]
- }
& o2 M% ]( l9 C7 c: M; I% ]1 `
6 q9 |, i8 Z* D; G- da = (g) => {//底图绘制% T8 o6 E# A5 z* D' |8 f$ k2 z0 |
- g.setColor(Color.BLACK);+ [: T ]; e3 T5 y2 K+ O
- g.fillRect(0, 0, 400, 400);
3 R" c( b4 t+ v$ N& m0 ~4 I k9 T - }# q1 F( @2 m, h2 k
- ( F1 `9 ?3 Y( O
- db = (g) => {//上层绘制
& m* S$ H- m) A3 J }- Q - g.setColor(Color.WHITE);
+ x ^* k+ _4 `6 w1 X6 {9 b - g.fillRect(0, 0, 400, 400);
5 e8 y' o _4 q, B. C - g.setColor(Color.RED);5 V+ v9 y5 _7 w1 ^* q
- g.setFont(font0);4 y6 D8 H) ?8 _; l
- let str = "晴纱是男娘";. X; R& Q" S) z! Y
- let ww = 400;
5 g S1 b: Y: `1 e6 y! e5 n7 Q - let w = getW(str, font0);5 t* m9 U/ s' A R& R
- g.drawString(str, ww / 2 - w / 2, 200);! T+ t8 h' T7 `6 A
- }
3 n% o4 h M+ b2 S) I - ' S" Q0 y; X0 ~
- const mat = new Matrices();
0 {; ]! g; }8 M4 m3 h; | - mat.translate(0, 0.5, 0);
& C# K- |+ J# k7 i8 B
9 t3 g2 g6 |3 a$ z7 q- function create(ctx, state, entity) {
, A( ~6 T% n* Y1 z: L - let info = {, t, H, g4 [/ U5 I. D
- ctx: ctx,: |, { L6 f/ I* x" J/ H6 C ]( w
- isTrain: false,
' b4 b' l' J' w, } - matrices: [mat],. }% N0 m1 P* }
- texture: [400, 400],0 L) Q2 v6 J8 \3 K
- model: {
8 j( y% ]+ M0 w' j - renderType: "light",
9 W2 j" {9 ^+ O) U* } - size: [1, 1],& r, I' V+ k8 o e1 f9 P2 W# f
- uvSize: [1, 1]9 O" R' M5 K- ~6 n4 M. H
- }
/ p5 f+ M) Y. K! I1 S+ J - }
+ O/ _5 G9 F! ^* n- |8 | - let f = new Face(info);
: I1 j2 k) [- [5 d9 Z: j: T - state.f = f;
: l7 {4 A" O9 e! D
0 N4 r; V/ H( b1 A# ?6 C- let t = f.texture;( g! f. j* M& c0 \
- let g = t.graphics;
b& I# w( ^! J" A6 J1 R - state.running = true;: s" ]) P6 ?( m
- let fps = 24;
8 |7 t) @ `* y8 z, o. D - da(g);//绘制底图; X9 B- G z1 M/ z" |9 f% x V5 Z
- t.upload();2 n# S* C* T1 x9 o6 P+ P3 g
- let k = 0;
- z3 l8 h5 J/ w' U& M5 d - let ti = Date.now();
! `' l: P( x. G+ y! j# K - let rt = 0;: I, A3 a- W: g& K
- smooth = (k, v) => {// 平滑变化
. w" u( }' d9 X: W4 N) G5 F - if (v > k) return k;1 \- w& \) i, [: i- A
- if (k < 0) return 0;
# ?2 v3 o# [: H: r - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
# R5 H4 A# }0 [7 V3 Z - }
5 W& h8 |5 y; L" B! i3 Q - run = () => {// 新线程2 [9 t2 b: e- ?$ P& C7 B& v
- let id = Thread.currentThread().getId();
2 s8 o# x; c$ l2 F9 J/ G - print("Thread start:" + id);
- S" e. c* @ G9 U - while (state.running) {7 u6 L0 S7 K# L+ H/ H
- try {
% {& L3 i1 r; E2 } - k += (Date.now() - ti) / 1000 * 0.2;: C+ n/ C* a& B" _5 ?9 {+ [% i
- ti = Date.now();
! l, v9 a% B# K - if (k > 1.5) {. ^; O9 M( t# t; B! U- j
- k = 0;
7 U' |5 g7 N. l - }
" R1 H6 x" _9 R. x& N9 C; H - setComp(g, 1);
1 x) i$ u! I$ w! T( g5 [5 a# Y# n: f - da(g);
) K6 I& I& H/ q: P1 Z6 j! c - let kk = smooth(1, k);//平滑切换透明度
. V9 u3 b7 q5 v* G. J4 F - setComp(g, kk);3 r( Q8 n T8 w/ P5 x+ B
- db(g);0 |; L$ H% w( t- }& R/ [
- t.upload();
L8 u2 w3 @% t/ h: q - ctx.setDebugInfo("rt" ,Date.now() - ti);
4 ~) Z5 E6 v) m) a5 v - ctx.setDebugInfo("k", k);6 a* N9 ^$ q/ {/ B9 g
- ctx.setDebugInfo("sm", kk);1 C4 O. _, S3 Y- }+ z
- rt = Date.now() - ti;, @/ i8 o3 Z7 J
- Thread.sleep(ck(rt - 1000 / fps));
. j. Y$ w* x5 {5 @8 S1 ~ - ctx.setDebugInfo("error", 0)( M, Z1 J; t% Z$ o F
- } catch (e) {' f9 O, }6 q: N! n
- ctx.setDebugInfo("error", e);5 G! E9 H1 I5 U7 M, I
- }
. C! P1 r: j0 \ - }
9 l7 U, G, t6 V* P. [) z - print("Thread end:" + id);; s0 P' C8 C0 Z( F
- }
2 b( o3 F D/ g& f4 k9 l; I# J, L - let th = new Thread(run, "qiehuan");% G4 ]. ], ^9 A) O; F' i6 y5 A8 F& j
- th.start();6 c! A( D8 C8 N% _( j8 A. E
- }* r# ^* W; q. E1 x+ ^1 C
% g3 d4 m2 q- A* c8 V$ ]5 ^6 n- function render(ctx, state, entity) {1 {1 I; |% `8 V' A
- state.f.tick();$ u7 R! f+ y2 e# J+ ^1 r3 ~
- }; P0 S1 G) G( Q# P `0 j3 y
- ; C! W" u a1 ~+ P1 z+ j7 C
- function dispose(ctx, state, entity) {5 Q% T/ j4 ] c, Z/ [' d1 [
- print("Dispose");$ a& T, H2 T6 v" T' b
- state.running = false;
; }6 M0 A# h: ]2 E - state.f.close();3 o6 }! Q+ l6 J8 A0 B3 t9 `
- }) {1 Q) W5 c9 Z* {+ g9 P. s5 P
- M4 M8 ~, ^+ I; O! {" J8 f
- function setComp(g, value) {
L! Z6 {" o+ b/ W) j9 a - g.setComposite(AlphaComposite.SrcOver.derive(value));$ y8 B7 q' Z6 |9 e- }+ x, f: W/ J1 B
- }
复制代码 . B9 [+ I, V) M9 R, W2 Z
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。2 n0 f7 j0 v0 s5 s, Y9 }% b! y
4 G! [( l% G2 o/ ^* ?, a/ b; b( @. G1 o, @# H G9 m/ g. [8 w
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)$ H9 k: B5 [; T- F. w8 Y
|
|