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! b) c! L" A. y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。1 F8 n* _0 P" }
- importPackage (java.lang);6 J4 C+ K0 a5 p7 [2 ?2 k
- importPackage (java.awt);
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( t7 W4 p! W! t% x3 j- include(Resources.id("mtrsteamloco:library/code/face.js"));. \: F2 I0 F S! ] p6 r4 N* Q
- 0 y0 B: o! ^& X( r, d8 p8 b8 K
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);; [: b3 V: Q! E. b) J% t |5 m+ T
3 Q4 Z7 ^9 G R6 I3 q- function getW(str, font) {
! A& D' Y3 m7 `! ?9 F2 i! U5 | - let frc = Resources.getFontRenderContext();) U0 h4 p- J' W3 J, ]
- bounds = font.getStringBounds(str, frc);
- @* z# l/ e/ ~ - return Math.ceil(bounds.getWidth());
. [" `" G2 R7 H1 V, g4 g - }% u$ g. Y; A# ~
- 3 i0 [0 P& m- _
- da = (g) => {//底图绘制
2 e( ?2 T8 ^' p) ?' D; f1 D' V - g.setColor(Color.BLACK);. P% ]& q! V7 M+ U- ?9 R, _( ?
- g.fillRect(0, 0, 400, 400);
; r( b- y5 f- C6 o4 } - }
2 z6 e' Y6 M7 I' [1 c - 6 R _9 W- k1 b. Z0 q
- db = (g) => {//上层绘制. H! \4 \- s* N
- g.setColor(Color.WHITE);
~' I8 i _3 K: T$ f - g.fillRect(0, 0, 400, 400);
" g9 O9 B9 x/ X. `/ l# K2 ?( b+ ~0 ^ - g.setColor(Color.RED);
; j: m2 i2 w) h* S - g.setFont(font0);$ @! v% i ]5 R0 n8 c# f
- let str = "晴纱是男娘";
( b8 g `# F6 ~! Y - let ww = 400;
' j% M& q- i3 K/ K% | - let w = getW(str, font0);. @& m. R; C+ w6 r
- g.drawString(str, ww / 2 - w / 2, 200);
$ B! p) Y" L# W$ @! k K - }
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' a6 b7 ^5 Z( ]% T- const mat = new Matrices();
* |0 W" w# r; k% Y4 _" [ - mat.translate(0, 0.5, 0);* S' c; e- Z- \6 g, A. w3 l: K
- e8 Z, H- }% L+ Z J$ l2 q- function create(ctx, state, entity) {
3 ~7 x- w( J, j ^ - let info = {4 O; O6 K K& W6 z' ^* A
- ctx: ctx,% `4 @! A9 S, |, d& L
- isTrain: false,# H- d2 E, M" d" t$ H0 c# ]6 o
- matrices: [mat],6 W# J( w$ K! ]- D
- texture: [400, 400],
" y! y) I5 J( M. D1 k/ z/ ^. d3 K - model: {
7 N( Y# ^6 H: w4 T/ C: A' q0 ~9 ~ - renderType: "light",
1 A4 E, \7 ?% R3 X- @" \ - size: [1, 1],
0 Q- I) o5 s9 j, L! H# S9 K - uvSize: [1, 1]
3 h$ `% ?6 b) S3 W% J7 J0 I' _ - }
# c" o* ^+ E+ E: p& s0 u* Z- C ~/ t - }
8 U( ^8 \+ y( ] O - let f = new Face(info);1 s. Q0 G5 Y! R. Y x! S# a0 f0 k
- state.f = f;
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- let t = f.texture; I5 {) K j2 w3 f# A% w2 x
- let g = t.graphics;
1 o X* ^6 r( ~, O/ X - state.running = true;
. V# O' L& u. e i+ o' [ - let fps = 24;
, h! u! w* Z& g2 i - da(g);//绘制底图
D+ j; j; ^/ v9 p: K. m - t.upload();
! Y. [9 S$ i, L3 T - let k = 0;2 W7 W. J! X; _
- let ti = Date.now();
5 A& ^0 P) X& Z, V/ l7 u; o7 c5 u - let rt = 0;- z2 {' g1 d. w, Z% V& E
- smooth = (k, v) => {// 平滑变化: Z2 y7 q s, ~5 |
- if (v > k) return k;/ U/ C( V; L( o8 b* w/ j
- if (k < 0) return 0;
. @( L3 h1 n: h# u* e - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;4 @; a4 F I& Z2 |/ C+ R
- }3 _: B/ q& x2 `/ Z1 `4 A4 u% ?: {
- run = () => {// 新线程
+ x: C% e) P: Q* ~! u! L - let id = Thread.currentThread().getId();' V' l7 s- a; o, V2 F: F8 C! i
- print("Thread start:" + id);
% ]9 R" w. q- c, _8 t - while (state.running) {) \/ B" ^" y7 E7 o$ i
- try {. ]/ H' H# v9 [, u/ ?8 H! L! T+ \4 P
- k += (Date.now() - ti) / 1000 * 0.2;
% Y! ^1 d U" J1 v9 ^$ J$ K - ti = Date.now();, X: o# ?% u3 T# t _$ Z5 i
- if (k > 1.5) {: K7 U6 R3 M$ T
- k = 0;
! o6 u5 J" {* x0 O; C - }
( F: _% c! ^$ i8 F0 l: [+ Y6 v1 K% u - setComp(g, 1);
* ?0 ]/ F8 Q( Y6 z - da(g);# r( n- S ?8 J! F5 T+ k5 w
- let kk = smooth(1, k);//平滑切换透明度0 B' l$ P1 S% K7 `. s% g. ?( S2 P
- setComp(g, kk);
/ j& y* e* i" } - db(g);
3 L. h" p6 w; s4 C# {9 ~ - t.upload();% d7 {; L5 d% m9 b7 e
- ctx.setDebugInfo("rt" ,Date.now() - ti);
- T% O) m; D2 P c - ctx.setDebugInfo("k", k);: R) \8 p8 m8 }5 X5 |/ x
- ctx.setDebugInfo("sm", kk);7 _3 M9 U: `" \* g+ |4 v# h. q
- rt = Date.now() - ti;/ G) O4 D7 n1 n
- Thread.sleep(ck(rt - 1000 / fps));
% C1 p' v( a# } - ctx.setDebugInfo("error", 0)
6 i, P4 D! [9 D* g3 t - } catch (e) {: @7 F5 \8 A3 S9 |) O! T1 Z
- ctx.setDebugInfo("error", e);# C0 j3 ?4 ]1 g2 E6 \
- }
, {% Z. M) q7 L; M1 O E - }
+ t2 \8 _ P. ]) e - print("Thread end:" + id);1 X M5 K; \- {* p+ k/ E
- }: z0 N2 W( }/ F
- let th = new Thread(run, "qiehuan");
4 p6 f* n; b4 r+ E$ V - th.start();
/ F% ?. J2 M) R$ j4 F - }
$ a1 i( F& q3 ~' U8 \$ `9 Z - 3 Y r" u3 E! F+ A$ E& |( |+ X
- function render(ctx, state, entity) {0 `5 W8 K+ `2 S1 Q8 c- G0 O3 O: b
- state.f.tick();
. e/ S2 `0 Q& v' B$ k - }
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- function dispose(ctx, state, entity) {
; Q' F4 {1 c5 T - print("Dispose");) j# y3 j1 x$ x. V
- state.running = false;
# H( k; R3 z! g1 E R7 { - state.f.close();
3 p+ w$ x* z$ G z) G - }$ }! h) e4 U& Q' S
- ( G0 j/ ` g" z0 y8 O/ ^) u
- function setComp(g, value) {
# ]8 s/ U+ U+ O( v' x# Q7 i - g.setComposite(AlphaComposite.SrcOver.derive(value));
8 _: ~4 x3 I2 J s7 b# C( I5 K/ \ - }
复制代码
7 @1 o# \8 e( e4 i0 g4 D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。' ?5 w- `3 k$ }0 L
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+ L- `' C& L0 r. [0 a' k顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
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