|
|
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
×
0 m; q$ f. K, H# [4 f8 T1 q7 L, P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。& e$ W3 i% _4 z1 h
- importPackage (java.lang);
" ?6 T$ x6 f; [' S, K2 R - importPackage (java.awt);. ~" W$ L' ]3 t" Q' @0 {$ p, K
2 L- Q; O: m3 A) I* K5 k- include(Resources.id("mtrsteamloco:library/code/face.js"));
8 s, o4 \' D# o. x4 r% ^' J( |6 K - 1 v5 I( J+ n1 Q! e/ t
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
, y3 A9 t! }! U' c, F% }( C
/ q! O) P8 a4 P4 a5 M; ~% f- function getW(str, font) {
e( l8 B0 ~( k0 n$ x - let frc = Resources.getFontRenderContext();) G; L: c" }( w5 n) j( m
- bounds = font.getStringBounds(str, frc);
) p4 Y( ?9 D5 b: _# A* p - return Math.ceil(bounds.getWidth());4 C- n' s ]! A+ a4 C
- }
% b/ ~ X8 D# Y% y& d, W2 S- c
5 n4 {" K/ Z `5 ]! U7 o# Z- da = (g) => {//底图绘制
; C3 d: F Z- u - g.setColor(Color.BLACK);' g( f% T( }0 }( u
- g.fillRect(0, 0, 400, 400);0 p4 G$ S$ }" l8 v+ X1 f
- }6 \5 V0 x# g: D, D$ V
- + N ]8 K0 s+ M0 C2 _
- db = (g) => {//上层绘制
& l( ?5 o/ v U E - g.setColor(Color.WHITE);
4 {8 c ^: A* f0 M$ ]0 E - g.fillRect(0, 0, 400, 400);- b3 a. L6 R# h4 P: }
- g.setColor(Color.RED);7 x2 _+ W: v2 _
- g.setFont(font0);
% ?; R) G) c9 P- ]- @* h - let str = "晴纱是男娘";9 G8 z$ l4 P" U2 j# F) i
- let ww = 400; i) P: _: j! j9 ~& T0 q! @- g
- let w = getW(str, font0);
* D( l4 @$ W0 h8 A3 D - g.drawString(str, ww / 2 - w / 2, 200);" A3 Z2 S* T! E) r
- }
- S# M! R$ P, T - / X1 E0 A- l8 s
- const mat = new Matrices();
/ n* I1 |2 Z# @- D- b - mat.translate(0, 0.5, 0);& v9 W& o- o) N; C2 i6 r
- " k$ i/ | I# V8 W! X7 U
- function create(ctx, state, entity) {) `1 r7 [$ r _% L8 D3 E4 t# m# U
- let info = {
: m- B6 q% B" O9 H* C - ctx: ctx,
3 k' A# k- ~" c( r - isTrain: false,! r' X0 j8 t" B S8 r u
- matrices: [mat],
2 u* }4 i+ Z6 E0 h: M - texture: [400, 400],
- f1 `- _' O/ B& j. @+ J - model: {
+ c7 v; i, r) N; W - renderType: "light",
5 o7 m: ^/ q/ J - size: [1, 1],
" b$ O W* n0 n0 ~) p% Q - uvSize: [1, 1]
6 e' e+ q7 ^4 ~ - }( X% @$ Z8 M: Q1 q) p% p9 L
- }7 i. _/ O2 R" K3 `2 {+ v- u
- let f = new Face(info);3 b* r2 h2 w( [, H/ S
- state.f = f;# E& ?% |) _3 Q7 E! H; h" S a
- & A/ c# c4 I2 q5 g& g+ W
- let t = f.texture;
. N& ?) X4 H% R( y( e - let g = t.graphics; u+ ^+ A, w, W. Y) O* Z4 C
- state.running = true;6 {( k4 A8 `& r8 j, R
- let fps = 24;2 }6 D- G8 j' V. q0 B
- da(g);//绘制底图& m4 Y* e, U2 p# g
- t.upload();
% I) m6 v1 k K - let k = 0;. \( F4 }1 _/ Z, v3 Y& W
- let ti = Date.now();
2 K( h( y, W0 N! k# w [ - let rt = 0;1 {: _1 I& Y' R R
- smooth = (k, v) => {// 平滑变化
5 Z. j( H+ K! [1 _, D% y - if (v > k) return k;% {# o6 S/ N. s, B4 V6 ]
- if (k < 0) return 0;
$ E4 m# T. m8 I: i* f+ B ~ - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;3 l4 J: G; O& w4 l: e/ Z
- }
4 B& A8 Q; T m& ^/ q. y - run = () => {// 新线程" n% ], @; _0 I3 D
- let id = Thread.currentThread().getId();
% a5 T. d; s% g+ D - print("Thread start:" + id);
; W! M8 A4 ?9 w& q% h - while (state.running) {
: i+ |" H) u6 g1 o! m- G - try {, W4 Y& \$ Z; j0 v7 _+ w: c
- k += (Date.now() - ti) / 1000 * 0.2;
" ]# I6 X* e. q, g - ti = Date.now();. ~% ~1 I, k8 [- U& P
- if (k > 1.5) {
6 x/ c) T* ~1 T* o - k = 0;. e J$ a3 @. J* z7 M2 k+ ]
- } n& q7 F* o% v9 B( k$ w
- setComp(g, 1);
) C3 S+ n+ ]7 ~/ y" i; B' ~ - da(g);
2 j' e, q# i9 |+ `9 t4 T - let kk = smooth(1, k);//平滑切换透明度
( K9 r _$ Z: W# c. a. [/ S: y& G - setComp(g, kk);/ }9 S% m7 P. X
- db(g);
- ?; e; h! L: R' u& @' A - t.upload();4 Z% h# x0 E3 K. V- O
- ctx.setDebugInfo("rt" ,Date.now() - ti);
( w, b' [4 ^6 ~; B" y - ctx.setDebugInfo("k", k);* h9 J, K$ w. ], O2 B9 z9 N& U9 |' g
- ctx.setDebugInfo("sm", kk);
8 C& o2 o9 j9 S - rt = Date.now() - ti;+ h0 Z" d l2 E& A+ e5 r
- Thread.sleep(ck(rt - 1000 / fps));$ |6 L/ e/ w7 [5 |- D
- ctx.setDebugInfo("error", 0) N* U" W. \9 x" ?2 V
- } catch (e) {
; x- f, ^% H7 l- n0 x* {! f - ctx.setDebugInfo("error", e);
9 B) [# M) U5 ~% m) X. o - }' S0 \5 P; A0 M! h1 _
- }4 E5 e8 U9 K* u) n' B- m* T5 ~
- print("Thread end:" + id);3 n+ u, ?* }: q
- }
- u9 t) F) _& t; m- B% N8 X' o - let th = new Thread(run, "qiehuan");' k- P# `: }0 M/ a, [; C
- th.start();
3 t/ ?( v7 O# n1 ^* L' h% B" F - }
/ r& ^$ I; f/ \! j, B. B v I - 4 k4 `/ W: i4 \
- function render(ctx, state, entity) {
% n7 z; _- j" j3 J - state.f.tick();$ W6 D) ^ {1 X) K' d) L# {
- }
% v2 A- M2 {% c6 F7 \ I* V: b
, s0 i/ v4 w) g" L) L- function dispose(ctx, state, entity) {
. B2 g$ S4 `5 a3 Q# ]2 I. F; i - print("Dispose");5 r6 O0 _- a+ A8 Z* j% f
- state.running = false;
+ u- ~1 a( g5 o2 p& G - state.f.close();/ s+ m& p& X7 K0 c
- }1 }9 K" q2 T3 f# G
- 4 b: C( P1 b' H$ ?
- function setComp(g, value) {2 K2 ~0 G3 n4 c& N, C0 k
- g.setComposite(AlphaComposite.SrcOver.derive(value));
! s1 Y4 C. Z; n. F0 [ - }
复制代码 ) b3 \1 ^) z+ h, m
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。
$ e3 }) F7 l3 _& R
2 K, {4 Q: A2 ^* t) V
0 O. ?# q Z# j) @" a6 ^" Y0 R( Z- f顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
; V( A4 k( a! p& M& w) N; Y |
|