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8 [7 Q5 F; [" K/ H" \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。 L# @( H+ C5 C
- importPackage (java.lang);* b! u% ]& u6 L/ f0 G) k
- importPackage (java.awt);
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$ [2 B' K4 c6 r: m# A6 X- include(Resources.id("mtrsteamloco:library/code/face.js"));2 x+ }# a) _# J5 _6 P' |
- " ^+ f" f3 _4 P: {4 y
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);5 Q+ b8 g# k5 |3 ^& q" Q
* G* |) }: [3 a! p1 J- function getW(str, font) {/ W4 h( z4 n; q1 R- L& B
- let frc = Resources.getFontRenderContext();# R7 q, q2 b9 n( v; m5 W
- bounds = font.getStringBounds(str, frc);) ]& h! O: g' i h* l/ i
- return Math.ceil(bounds.getWidth());9 |9 R2 ]8 c; Q
- }# }) M9 m `8 r3 k4 t
- ; Y* `# p3 e( Y, W! L3 s8 q
- da = (g) => {//底图绘制
) s7 V# e* q* s% |, l - g.setColor(Color.BLACK);
+ W! a, R+ _: m - g.fillRect(0, 0, 400, 400);3 V$ t! V& Q" N8 J- f$ j: E0 D
- }3 f$ I- Z6 A2 ]7 H% F$ ]
W. _0 Y; c8 l }+ @- db = (g) => {//上层绘制
j+ M: y/ g. D- B6 w' d% z& Z - g.setColor(Color.WHITE);
6 l9 {2 X4 O+ W; s - g.fillRect(0, 0, 400, 400);5 D1 m7 a. ~4 k/ ^1 M8 P9 s
- g.setColor(Color.RED);
" g* X/ w: y" j& h! m6 s, P - g.setFont(font0);9 l$ x( _. a* d: M: V8 Q. N% @( t1 o+ O
- let str = "晴纱是男娘";3 f2 u* j5 y4 b0 {! f5 g/ Q7 t
- let ww = 400;
' T& E$ q' p( i: j - let w = getW(str, font0);
" M. B) T3 A+ ~1 X$ k/ Y( u - g.drawString(str, ww / 2 - w / 2, 200);8 X+ b" O8 [1 n
- }
7 \% d7 Z/ c- L% \ K+ m - 4 c" U( V! J0 \( E* p) o6 y( Q
- const mat = new Matrices();
3 N. C. f) n, d, I: P' K. C - mat.translate(0, 0.5, 0);
% B0 A. v7 `# A; _# o. A( u* j h - 9 q2 e% b% A" M, A$ l5 W A/ T
- function create(ctx, state, entity) {
' ]# ]. k' ~" h; q8 g* m, v7 ` - let info = {
; R; K1 l( I3 Z/ F+ ?4 I - ctx: ctx,; _0 n$ V2 b, T8 O5 j
- isTrain: false,
0 }/ e3 ?( W8 g U' y - matrices: [mat], {* \2 C0 n3 M2 x& z; \, S9 k% l
- texture: [400, 400],: c" Z- {+ F1 P k. s4 d2 T
- model: {+ H7 Z* i8 ?$ p
- renderType: "light",
+ k& s. u- h3 ` s3 X% `9 g Y - size: [1, 1],
" F8 h( G# a( ?" {, Y1 e- v2 V - uvSize: [1, 1]
1 x9 X- E' m A+ K1 G - }7 S: N2 e4 D: p. d
- }
" {: X: s% J* ]* ]$ W x0 B8 J - let f = new Face(info);
. `3 S0 K. i9 C- p - state.f = f;
# g2 F5 c. j7 s2 K- ~5 K - % e' p# g. D( |* |) N
- let t = f.texture;
# G, a4 u' @; N, X6 z0 c - let g = t.graphics;
: Z& x9 c/ G6 N' Q. f+ M+ r - state.running = true;9 p7 I; J T9 J3 S$ ]
- let fps = 24;! c1 T; `) V+ S/ f
- da(g);//绘制底图3 \, x1 |0 m' D
- t.upload();8 Q$ M; N* i6 v* L' c
- let k = 0;' P0 D& A1 u, p; c. W% c3 K
- let ti = Date.now();$ A' R" s7 G8 N
- let rt = 0;
+ _. }/ t9 N: g2 L) { - smooth = (k, v) => {// 平滑变化$ ~0 h6 S7 {$ e5 q' ~1 b
- if (v > k) return k;( s' V2 ^. W/ p9 t, a
- if (k < 0) return 0;2 Q8 E% n+ @* o
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;3 o- X$ _# h5 w0 t; X
- }; s `) F( E" I+ ^8 q4 ~0 M
- run = () => {// 新线程- w. f$ s) D3 m3 I; m2 x5 X0 H7 z
- let id = Thread.currentThread().getId();
1 V0 n2 y Q% I, \ - print("Thread start:" + id);
" k1 Z v- L- {7 F3 h - while (state.running) {
6 a7 s# Y' z. ?, ?! r - try {+ J1 o# `* ?% \- {9 R1 L
- k += (Date.now() - ti) / 1000 * 0.2;" q" D& Y9 z8 k% f* l
- ti = Date.now();
, H' [2 j. o+ i& W( Q - if (k > 1.5) {1 P! p# C! ~) ?& I0 R: M! ]" e
- k = 0;
5 w4 P( a) D, w9 {5 @ - }# v- c: e8 T* n. {; E
- setComp(g, 1);) x8 s9 T0 I" E+ Q+ g8 X/ _
- da(g);
9 i9 D" D' _$ K% ?4 k# d. R, I - let kk = smooth(1, k);//平滑切换透明度0 [! Q3 ~4 U9 ]0 z. W) f
- setComp(g, kk); @- a C$ N7 ] t; q& T
- db(g);+ t! }$ C3 T8 ~3 y! H# a# M/ T& b
- t.upload();
8 x3 A- ?9 S D# q! e8 a' t; f - ctx.setDebugInfo("rt" ,Date.now() - ti);
) ^( y B8 u" r8 {! u" a - ctx.setDebugInfo("k", k);. ]4 {+ m% Q/ y% g
- ctx.setDebugInfo("sm", kk);
/ _& U; }! t& U$ o; i$ X! k- k - rt = Date.now() - ti;; z* s! ~$ Y ]2 }
- Thread.sleep(ck(rt - 1000 / fps));
+ k$ ?$ l( i* C/ n& }2 _( l- ] - ctx.setDebugInfo("error", 0)
3 C0 @; g; T; w6 y8 d! @ - } catch (e) {" c8 ]3 ]! u' I" g1 M
- ctx.setDebugInfo("error", e);
- S O6 P* E! c# P6 S - }
4 Y/ a% h- W! I) T% v1 ^& V4 I - }. d5 H7 x* U0 L3 |$ w: P
- print("Thread end:" + id);
2 j7 k, c) s$ Q: D6 U - }- c( ^' ^' W+ |8 @2 U* L9 m' R
- let th = new Thread(run, "qiehuan");
: J* h: P1 |$ S0 y$ K6 ?$ H - th.start();- `5 x- T0 }1 ]+ _
- }5 c1 K- J5 G6 U1 z
7 M& D3 d. r6 H/ @) v- function render(ctx, state, entity) {6 ~6 S6 w* x+ x) @
- state.f.tick();! F) h/ m* r5 }) _4 x% ?3 Q
- }
3 D+ b1 X8 O% Z! Z! T# t; W - ( |2 q3 c- [; L' O F
- function dispose(ctx, state, entity) {) V2 N2 P" V: z1 {
- print("Dispose");) W: U. S/ }8 Q( k' U
- state.running = false;
+ a& D' B0 H7 D2 J2 ^ - state.f.close();
$ j: m0 b6 {7 m2 }' @+ R! ?6 N6 J - }
/ V' U9 f6 i7 L, v3 @ - ) ]; Y$ {4 K" J$ @" i8 c
- function setComp(g, value) {
; J2 x E; D1 Q) E - g.setComposite(AlphaComposite.SrcOver.derive(value));
0 {. c1 d) C8 ^) Y; R- B! ? - }
复制代码 + }4 p* Z$ R% 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。. `$ Z( e# x) R
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# O- g5 x' h. \' l) j6 D0 Z: u" B顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下). [4 P; Q8 z6 `
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