|
|
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 c2 E X# U' X2 Y& J! g
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。 G7 M' E* w& A
- importPackage (java.lang);, i/ d: s2 R# z
- importPackage (java.awt);! D; {+ t! [% u, h5 u
# ~1 c) a3 b `) T6 W- include(Resources.id("mtrsteamloco:library/code/face.js"));! t) T: I( I- }9 e1 Y. l7 z
v. j# V# m9 ], ]2 o5 E- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80); y" U( B6 s8 t: ^2 A' V
- * v& H- f2 l5 ]2 f2 f
- function getW(str, font) {8 T) D- R1 m3 u! h% ~5 K( p
- let frc = Resources.getFontRenderContext();$ Y/ f9 Z8 t9 b4 s1 W
- bounds = font.getStringBounds(str, frc);
4 s* B+ `7 V7 t9 g$ o - return Math.ceil(bounds.getWidth());9 j6 ~+ D3 b4 p5 N9 d U6 H
- }
+ U# Z# ~0 V3 }7 F8 i
$ L% k: V; `' G5 {' R+ F6 J9 _8 n4 Z- da = (g) => {//底图绘制
7 R5 L8 C+ Y8 g; x0 f - g.setColor(Color.BLACK);
( E" l! e8 G9 t5 b - g.fillRect(0, 0, 400, 400);
+ a3 R6 r1 Y1 D - }
# z' ?6 B) H6 c1 T1 _0 ] - q3 _' _. g( n4 A
- db = (g) => {//上层绘制1 m W e# w3 `
- g.setColor(Color.WHITE);( ]4 U: f8 d# b& g
- g.fillRect(0, 0, 400, 400);
6 ~" i7 ?2 \ O' \- c8 J - g.setColor(Color.RED);
# B% [2 ^- p/ G/ P - g.setFont(font0);: y/ I, E D( B2 } |4 p! V3 W* B
- let str = "晴纱是男娘"; q+ [* |+ h& R4 G1 V- a# E, o
- let ww = 400;9 A9 j- y1 r" F- G
- let w = getW(str, font0);
- y5 w% `& [2 k/ i2 Y3 N - g.drawString(str, ww / 2 - w / 2, 200);4 T7 [# B) c& K; I8 }, x
- }8 I$ n4 e0 ^ b! `( g, ? _# h& W4 _
+ }$ H( [, i) A2 \9 Z- const mat = new Matrices();9 _. p, Q' n1 l5 n2 V
- mat.translate(0, 0.5, 0);
& E( L5 `% j$ @% p
+ s& N3 Y* A) J! B3 _5 [( M- function create(ctx, state, entity) {- Q! E; {7 Q6 S
- let info = {+ u/ j) X9 E2 V% h' ]. i6 Q
- ctx: ctx,3 B6 M3 X( {+ ~# U; P- q* T
- isTrain: false,
1 {. z: d' H7 I& Q- l - matrices: [mat],
, e Z S% |; Y, ] w: \5 f - texture: [400, 400],
/ R& c- q, S( G9 s! i - model: {& m1 o2 A+ C# x O. e
- renderType: "light",: ~6 r& v6 R. D- f9 J
- size: [1, 1],
& q3 L- F! q* b - uvSize: [1, 1]- W8 v7 K0 }2 r! |" P
- }6 D" P6 Q; P& l3 ?# x
- }* Q' ]4 x8 C- N P0 `
- let f = new Face(info);
' g4 j' {' @' [7 X4 L - state.f = f;
( G: T* J7 h5 z9 p0 _% n- ]
8 f0 D5 j/ q3 K( A" K- let t = f.texture;3 y0 K. C- M# o; ]0 L
- let g = t.graphics;9 C( f( @: t2 V3 F" X
- state.running = true;5 c8 |5 [5 |& m1 `5 U8 Q
- let fps = 24;1 j3 O3 S# P2 h- X
- da(g);//绘制底图' V. V( s$ V& C! P3 S
- t.upload();. N3 p7 O: ?" ~
- let k = 0;
- s; Y( ?9 H9 ?5 D' P; F - let ti = Date.now();
4 L+ K: l5 `; e' Y - let rt = 0;
3 J8 g4 Z" P7 f0 X: d# B% |; e - smooth = (k, v) => {// 平滑变化; |, R6 w8 q' h
- if (v > k) return k;
6 E( _/ g c$ X( C m4 B - if (k < 0) return 0;
1 l$ p% j% H9 L$ `2 h' o" a - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;6 o7 b& h/ I+ H9 E9 w/ o1 ?
- }1 E+ ^0 `/ z# R( H' @# y
- run = () => {// 新线程
) }" C9 ^" K$ n. r8 v6 r - let id = Thread.currentThread().getId();; U$ P% W9 x0 k
- print("Thread start:" + id);9 _$ E1 A% @, L, D$ U
- while (state.running) {. [7 ^# N1 j+ }8 P, m+ ?) P5 P
- try {
0 I* h/ }9 _# S - k += (Date.now() - ti) / 1000 * 0.2; r! z) r) m; S6 g, W2 i* i
- ti = Date.now();
3 p+ b4 Y, P; V0 Q* I1 j - if (k > 1.5) {
4 V7 Z( T- y: a% X/ h: S6 Q% P - k = 0;
3 v' B" j b1 b2 } - }
5 z9 n1 Z/ b9 n4 w - setComp(g, 1);
# j. D1 h$ [" f; [8 l3 Z* r* h - da(g);% K& c+ w9 e$ O' V* t) `' J
- let kk = smooth(1, k);//平滑切换透明度
0 P2 D5 C& j6 `* I! Q* z$ H4 Z - setComp(g, kk);
7 h4 O5 ~, y. f0 }! m6 n - db(g);
P7 s& c8 I$ w/ B7 k7 A+ m! y - t.upload(); V7 T+ F! Q, {8 y4 N0 }
- ctx.setDebugInfo("rt" ,Date.now() - ti);
# _& i" c' e; D9 |0 k4 z* j - ctx.setDebugInfo("k", k);9 |/ G0 B. P5 f
- ctx.setDebugInfo("sm", kk);
" V8 ^0 ?1 x: c1 X5 H- P- b - rt = Date.now() - ti;
/ ~) g9 i1 h* _7 w2 F/ }# f/ I - Thread.sleep(ck(rt - 1000 / fps));
, m0 X6 i& A/ o! g$ I - ctx.setDebugInfo("error", 0)
' P; R# @% w6 M- l1 \- ?1 ]& r - } catch (e) {
( U3 X1 y5 c2 _) k/ J0 r3 E. Q4 z - ctx.setDebugInfo("error", e);
+ h0 K/ y2 m j( b, n p3 j - }
/ @+ E- `" u5 E2 J u - }
; A3 l+ f, s! H/ t# A7 Z - print("Thread end:" + id);' w9 t& o5 }, ^) M: G
- }' C) U3 L* T. C, ?% H) D* `
- let th = new Thread(run, "qiehuan");
( g, e; B: p# ~7 a9 N - th.start();
4 B- Q# d/ P5 K$ @" v - }
0 P5 m9 r. {1 p. ^$ o% l - ) F4 [& u% w1 R: `7 G! m8 [6 {2 U/ n
- function render(ctx, state, entity) {2 P4 T5 v$ J' `5 I+ h: [: ?
- state.f.tick();. l7 y/ A# C& X6 {
- }. j3 s s x; j* q
- ) x8 B* b# i# F
- function dispose(ctx, state, entity) {9 D+ D! ^7 K l0 C; h
- print("Dispose");
* l8 q6 I0 H1 M - state.running = false;) R4 P5 l& @1 J% F
- state.f.close();. E6 e/ B$ P( M9 Q* r1 G+ t
- }2 }* B4 \& y" t6 b. \' w
- - c4 N1 U8 e3 j/ `! h) E
- function setComp(g, value) {" h: Z5 e0 o4 z5 y( e( ?' }* X
- g.setComposite(AlphaComposite.SrcOver.derive(value));
8 g5 }* A( @; `/ C7 M4 D1 g4 T - }
复制代码
. a* Z- X) b' z0 ^' w' l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。' H% C2 S* Y, V* y4 m3 ?
9 o* Z, l( [4 Z3 }& r6 }
9 ?! r1 _, v$ r1 ~" c6 r顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)7 N1 Q. ] J. B e6 q
|
|