|
|
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
×
- x+ K1 k e6 c* o9 r; W+ b7 L
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。
* D# F6 Z) ^/ w9 N$ v8 Y- importPackage (java.lang);
3 S# S4 P( }6 o - importPackage (java.awt);$ o7 u$ O& `$ n) }2 i
, g& u5 C$ g1 t/ k S P! q2 n- include(Resources.id("mtrsteamloco:library/code/face.js"));. J- p* K2 h7 T, M1 q \; [3 z
- # I: b# C, N5 H% M
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
, Y! }* _; F, T' v) v* w0 A* ]
& ~! ?5 ?+ d7 f& C! L2 o/ \& y- function getW(str, font) {) X* r" H: I' u" r
- let frc = Resources.getFontRenderContext();0 F, W& n1 c; Z, r4 W
- bounds = font.getStringBounds(str, frc);
0 R' K2 t3 |% E1 ?+ ~ - return Math.ceil(bounds.getWidth());
) `" c% V1 t. S& G# f2 s0 q8 S, I - }
( A/ J* v' W" A' O
3 ^& }0 ]* ?# R5 R- da = (g) => {//底图绘制
' I7 ], c* H- R; b9 ? - g.setColor(Color.BLACK);
, c% ?( ?+ o! H6 [8 L - g.fillRect(0, 0, 400, 400);
3 r" Y. ~$ {( r! ]7 K/ m, D - }
; p3 u4 N2 j7 [# V( q- @ - 5 t; s, H6 j* h7 F3 o1 O. p
- db = (g) => {//上层绘制/ P/ @" X0 n# `" d# z. T- H4 V
- g.setColor(Color.WHITE);
2 r/ }- Q3 j( E+ n( k/ l& c8 v t6 h - g.fillRect(0, 0, 400, 400);- B0 ?7 D6 M: i; y3 ?% q9 c: E
- g.setColor(Color.RED);, R0 ]" S, X# b
- g.setFont(font0);- ]) Z0 }) P; p% ~' J! H- i
- let str = "晴纱是男娘";
9 K3 F! f" ], u" r - let ww = 400;- e, b o; {1 w* d9 h: D
- let w = getW(str, font0);
7 ` y0 `9 H1 f - g.drawString(str, ww / 2 - w / 2, 200);7 x8 z" Z8 M. P. S& e
- }
- Q/ k+ C5 e5 ^# p
( q! E( U6 B/ @8 Q7 q5 [ Q5 H7 I- const mat = new Matrices();6 S8 p9 c# a4 K0 A ?
- mat.translate(0, 0.5, 0);
% {1 S3 b" D- W; U
' ~% K: P. X K# C- function create(ctx, state, entity) {
8 m# Z7 `, y6 L- j2 u- A3 `# { - let info = {
! y0 r) L1 y, B - ctx: ctx,
3 A& I( t4 M2 {& f0 u% p t/ l1 b' ^ - isTrain: false,3 n! p7 T( I7 ?: a
- matrices: [mat],( C3 _' u8 H2 M7 ?
- texture: [400, 400],
2 h2 z. P7 n1 ~ - model: {: Y! ~- o7 E; T4 s# x- K1 x
- renderType: "light",8 b# P, ~$ Q: ?+ ^8 k
- size: [1, 1],5 }1 Y; C4 [! Z: W- x/ G
- uvSize: [1, 1]
/ Z5 d: r6 @9 }% q4 m: t - }# u/ P9 j# N$ q7 Q, p4 A4 |% F
- }
" F7 m3 ^1 g, I/ T1 p - let f = new Face(info);
8 M& N+ @8 E( B) o - state.f = f;
5 I4 Y& u" D$ B9 P6 G6 H - ' W# O7 h. X# r c
- let t = f.texture;
( J: T/ ^8 z$ {* w# k - let g = t.graphics;% ~- D3 H+ X/ S$ F5 ]* F
- state.running = true;! R( M0 P' C! c8 b# r/ B% |
- let fps = 24;
" ~# S9 m: X3 A - da(g);//绘制底图$ x A; U. R4 j
- t.upload();
3 o6 a3 c. u( w! w - let k = 0;1 a0 y$ n0 g2 s+ a# O3 i
- let ti = Date.now();1 c0 J1 Y: ?1 w0 V
- let rt = 0; h# D. w6 p. ` n) W, s. p
- smooth = (k, v) => {// 平滑变化
% V+ C! C; x8 W3 C+ I - if (v > k) return k;
7 ^% O/ ?) ]9 }. g1 _1 W/ P6 I - if (k < 0) return 0;& a, J1 k" J5 w( @) r. ]0 x5 z
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k; R$ e, G, K `" s& j& a2 L% x) A
- }
0 C: U5 t4 V t `! b: u - run = () => {// 新线程
# }) F9 H: a# |& } - let id = Thread.currentThread().getId();& D9 m. ]6 Q; B$ f( y' _4 r0 w
- print("Thread start:" + id);& W, p9 Y2 b9 j% E' a3 m3 B
- while (state.running) {
3 c1 o! m3 k4 a0 N5 b& v0 z - try {6 h' o9 v) e3 L0 N* i
- k += (Date.now() - ti) / 1000 * 0.2;8 T% @( S9 t2 v* m% l
- ti = Date.now();3 S2 b z5 o4 M. V* i' h
- if (k > 1.5) {
; s8 a8 f) Z+ P! f2 F - k = 0;
# [4 W/ Z* ~7 c - }# B. E, n$ K, Z/ g6 [1 i0 p
- setComp(g, 1);/ U6 h5 K* ~) i( G7 x, P# R
- da(g);* Z/ b; ?/ [+ l1 _0 g e
- let kk = smooth(1, k);//平滑切换透明度
. R6 p* ?6 S$ u. P- X - setComp(g, kk); V6 D4 d6 r* G' _
- db(g);7 ^! T# i, N& |' l" f& n ]1 ~, k; n a
- t.upload();0 X4 `* A2 n% Z1 h# {
- ctx.setDebugInfo("rt" ,Date.now() - ti);& x, N5 G$ E, ]
- ctx.setDebugInfo("k", k);, P5 ?$ A g' n W0 m0 Y
- ctx.setDebugInfo("sm", kk);
) z2 N' a9 }* W3 h - rt = Date.now() - ti;+ ?& C) {, [! A
- Thread.sleep(ck(rt - 1000 / fps));
1 p+ {+ M" d# j m9 C: y - ctx.setDebugInfo("error", 0), t+ z/ |) r P% y( s7 v
- } catch (e) {
& \* T9 }* s! w3 }+ J% c - ctx.setDebugInfo("error", e);
1 y6 c. ^0 g0 E8 Y3 h- _7 |, Z - }
* j; n) r% f/ f - }
0 @% s7 N3 `0 y( |# A: M( Y - print("Thread end:" + id);- [7 v- r3 }$ G
- }' R2 v, o$ |" S! R, Y- M
- let th = new Thread(run, "qiehuan");6 Q) ^9 p$ c( l% H: L
- th.start();
$ ^5 i; s; N5 G/ J - }0 j( n7 }, o) j1 |' {1 p/ I, e, F
% C$ g1 l* M' C7 ^9 t- function render(ctx, state, entity) {* L1 J& s2 L! i
- state.f.tick();
) ]* n3 R+ l" [4 H3 _ - }1 @* U3 C3 S- ?. v6 B+ q
- 0 N q& E! J5 K* @
- function dispose(ctx, state, entity) { A# O$ t' [9 i7 G
- print("Dispose");
+ L) c; z& B* E2 T: S1 _- S. Z2 O% O - state.running = false;
% X, M# N9 Y3 O$ c- o/ S - state.f.close();
. U) V4 I, X* }: N - }! D: I7 P" p& |9 p
- 3 S6 e) g. E+ A1 ?. k
- function setComp(g, value) {3 }' N& V6 P; \- k
- g.setComposite(AlphaComposite.SrcOver.derive(value));
* B" f' k3 Z8 n3 K: V - }
复制代码 . P: o; h, n5 H2 l X( u2 o
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。; } A) v; X( X$ R" s, ]& N- a/ S$ }
& a" U- L7 o5 G9 {0 N
8 u% a$ Q$ t4 L9 ]顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
8 S* K+ I [8 ^3 Q+ Q- K& B/ o |
|