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7 [! Q5 S3 S+ l" C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。4 K" |. Y: D$ a1 h, L& o1 i& o
- importPackage (java.lang);' G, F2 m; x* S
- importPackage (java.awt);7 v9 u( S* }- C2 e
- + d6 L) ]) u. Y8 r* N% D3 C
- include(Resources.id("mtrsteamloco:library/code/face.js"));, T: _; n/ v& Z6 h6 V! r
7 ?7 `& r6 I; h" o* h7 b: v- Y1 A- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);: p; M9 Y" }1 H# q, @
- # o7 X% u2 B+ P$ e
- function getW(str, font) {9 u, C: w. r) L& l& n) |- Y
- let frc = Resources.getFontRenderContext();
+ W6 w" z2 _# u H - bounds = font.getStringBounds(str, frc);
% m* T& c) u6 X3 u4 L0 G4 X0 U - return Math.ceil(bounds.getWidth());
8 b' x U* O3 W* q& h - }; q8 Y8 _! R! u4 d$ \1 ?4 A
- ?" G( V7 M8 M4 n2 L
- da = (g) => {//底图绘制
I$ j* Z" ~9 Q& b. \7 s1 \ e - g.setColor(Color.BLACK);
5 ?4 Y/ N8 ?% I2 y - g.fillRect(0, 0, 400, 400);) H# ?/ L+ T3 \& f
- } x+ u0 ^# g! m* c
- . _+ [. G* d3 |9 l+ p P
- db = (g) => {//上层绘制7 c" E/ @$ ]4 u2 L+ q$ e3 Y; h
- g.setColor(Color.WHITE);# I8 S, k+ X8 j# d
- g.fillRect(0, 0, 400, 400);
4 L. Y# Q2 {9 l1 b7 R - g.setColor(Color.RED);1 a/ H, v, B4 Y- p
- g.setFont(font0);
' f# I, N- c5 x5 O+ a - let str = "晴纱是男娘";
+ A' ~# g- |/ J5 Z5 W( B - let ww = 400;6 i2 b. v0 J% S4 W; P) J
- let w = getW(str, font0);: i" S$ R' ^% F
- g.drawString(str, ww / 2 - w / 2, 200);2 }6 X9 T: W7 Z6 \) ]0 F* _
- }5 [( M; i1 L, p4 ^5 V
- + m/ e, P3 P+ U2 Z9 Y3 j
- const mat = new Matrices();' h3 _* o* y9 z% ?7 z" d
- mat.translate(0, 0.5, 0);' o6 U+ Y5 C& i: D, ?5 A
h9 X& ], m) m1 o- function create(ctx, state, entity) { L! S8 G2 m6 Z7 L) E
- let info = {% ^& ^2 ?# I: d8 f
- ctx: ctx,
- i) F2 ~# w. s2 v5 k - isTrain: false,* e: X3 h8 F& B1 F0 i
- matrices: [mat],1 U" S( s$ V2 U( k' y3 B
- texture: [400, 400],
" ^4 g/ p% K1 ? s - model: {% W' g% {5 y" T. H' n
- renderType: "light",7 \; ~+ Y& f" g3 @9 t( E
- size: [1, 1],
" |0 Z% n* n1 H3 p' B E - uvSize: [1, 1]7 J8 |+ S S. L- w1 N# h: r
- }3 a& }% d, u' P
- }$ W+ G3 T, X' Q% {) _
- let f = new Face(info);$ n5 Q5 {/ o- i# W6 J4 r
- state.f = f;8 B2 w2 q: @2 D6 W
- ! D7 E- [6 h5 }4 d3 }
- let t = f.texture;- }: S8 j, `$ s
- let g = t.graphics;7 M1 N2 h N6 z
- state.running = true;
5 p6 D3 x, ?) T5 U. ?2 C - let fps = 24;3 P3 q8 D5 N* M( `, m3 h/ Q* i
- da(g);//绘制底图3 \7 y. U! t6 S G, P
- t.upload();
. M- w+ [2 R( b# \5 W8 g3 R; J( | - let k = 0;
4 a2 s' c. M/ c, g; x - let ti = Date.now();# B" }* [: C* C `
- let rt = 0;
/ }& `, W S2 }' p/ b8 n: V - smooth = (k, v) => {// 平滑变化& T0 i9 T P. Y5 K; O1 @( y
- if (v > k) return k;# x0 v" n' R: `, q# G
- if (k < 0) return 0;0 K" o; Z, l, x- l4 g7 e" M
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;6 ]8 B. H9 b* f! v6 I! D/ y5 o9 f
- }
" l* i) N/ i* \: ^6 `0 J( H& ?; q' h - run = () => {// 新线程
$ q) C6 F# j/ z; T - let id = Thread.currentThread().getId();
1 A& l P/ b+ A: z6 _3 I) G& d - print("Thread start:" + id);3 E0 C5 h6 q# G# B
- while (state.running) {
$ r* o2 f# y t - try {
4 ^3 V- Y. _& C7 c" T/ X - k += (Date.now() - ti) / 1000 * 0.2;
: ^! P h E: z# b - ti = Date.now();
3 U; [3 K6 A& P- m$ @' x - if (k > 1.5) {
4 c" l9 c" }. c7 l9 V - k = 0;
3 w% a( B" _# k! B1 p: ^ - }$ c5 W, t2 t4 E$ p2 c
- setComp(g, 1);
+ i% b; x: N' e: E& F9 z, h - da(g);: x" ^& \ \$ |' u5 L
- let kk = smooth(1, k);//平滑切换透明度5 F% z1 M, l V& K" h
- setComp(g, kk);
+ X" x, S1 o4 ^+ i T - db(g);+ u {1 u$ K1 [: s E5 h$ Y+ g
- t.upload();
% @0 F" r0 F- ^5 X( U - ctx.setDebugInfo("rt" ,Date.now() - ti);: L$ k" C6 D$ I0 I8 ^( z
- ctx.setDebugInfo("k", k);! T2 A9 y; }$ ~. D5 y
- ctx.setDebugInfo("sm", kk);5 R) ^+ V, B5 v5 c
- rt = Date.now() - ti;& \- W7 s0 n' J+ n4 z% D
- Thread.sleep(ck(rt - 1000 / fps));
; d/ [- L9 p9 g! \8 d - ctx.setDebugInfo("error", 0)5 u# K% p8 T. F* D8 t
- } catch (e) {
% k: b, U0 B: P# J; T - ctx.setDebugInfo("error", e);
& J0 \) k$ E* M' \; v* h& c& G - }
+ m" a/ }! F9 w1 p; ~: B# j8 c. Y) C - }" }# a& t" w7 h# }- f* p6 W
- print("Thread end:" + id);
8 \ K+ Z6 e2 Q0 w3 P - }* A0 U. P- I4 W w% O6 z: a
- let th = new Thread(run, "qiehuan");
9 y. S$ S5 }0 L - th.start();8 d6 A0 @9 n5 _9 Z2 V5 W
- }
- d! r" _7 _# S8 K, ]4 \! p - & k! H+ C+ z% P# W3 }
- function render(ctx, state, entity) {+ {0 _4 y) o" w# v" s9 B
- state.f.tick();5 @8 u* j d }- u) S% a
- }
+ I* ~! x) R$ _; F& \
4 m$ z; Q E$ ^6 ^! l- function dispose(ctx, state, entity) {; R3 C) \1 ~( ~* Z V1 C6 {
- print("Dispose");
/ J7 j* i5 U0 _. x. P8 Z - state.running = false;2 [2 i8 i5 d5 X2 o5 Y \: g) O! F3 F
- state.f.close();
6 b4 j- H- q) K( M3 H) a2 F - }1 a+ _0 y( z- y! Z: I8 r
# }4 ^' e v) n+ o g- function setComp(g, value) {
* c# |; s& A, t: i' X2 X0 \ - g.setComposite(AlphaComposite.SrcOver.derive(value));
; o" ]9 {& j g" x( s' v - }
复制代码
2 |3 x F) A4 m6 q/ f1 T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。2 }& Y; B0 O' r& g; Y* V
1 [) W3 |8 h' h" I) p5 G
: @# Z |, G) k% A' S2 h) l7 Z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 p3 j! c/ J9 ?4 D, f
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