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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。! P3 r' f' f1 m; }; y, \% F8 P
- importPackage (java.lang);
" T) e* f6 I/ |/ ^2 ~' ^; S - importPackage (java.awt);" E% S2 {$ ~+ c
: l# o% [8 w+ R5 ~4 @- include(Resources.id("mtrsteamloco:library/code/face.js"));
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- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
) [+ Q( {3 H. ]
" o9 U( L" S/ |1 m( ^( B- function getW(str, font) {
) s u' J' J' x$ h - let frc = Resources.getFontRenderContext();% {/ f x. ]0 x* N1 J+ ?8 n
- bounds = font.getStringBounds(str, frc);
& d6 A# j6 N& N, A! \6 o4 O - return Math.ceil(bounds.getWidth());
% X0 O& q1 \' A& `& z: t - }5 O6 t! Z; z2 h$ q. b1 M
- 7 b+ v5 z5 E) N, l( x
- da = (g) => {//底图绘制
# {2 I! B3 {: i7 R - g.setColor(Color.BLACK);
) ^% L6 I3 r1 e0 y2 L( M5 G - g.fillRect(0, 0, 400, 400);2 A0 R% ?! V0 `: M' ]
- }
" R& Y/ _; Y* b" }1 [
2 M4 k- \+ y5 c+ {( g% u! g- db = (g) => {//上层绘制- ^; W, E9 _% b
- g.setColor(Color.WHITE);/ E/ F: I) e2 ^7 O* l) K3 G
- g.fillRect(0, 0, 400, 400);0 S8 }3 [0 `3 i$ X5 a) x4 ?% R
- g.setColor(Color.RED);
, W: k! b, c8 ]2 E! r0 } - g.setFont(font0);, }3 E* Y" g% t# V
- let str = "晴纱是男娘";9 _1 X# l# E2 T* j* [
- let ww = 400;5 d1 H+ A" j# n a% d3 Z. g
- let w = getW(str, font0);4 ^$ i5 t/ ~4 F7 d4 ~$ _
- g.drawString(str, ww / 2 - w / 2, 200);
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" F! U# l+ o" e- const mat = new Matrices();
8 O! y$ g5 I0 l) I/ @- i) _7 Y - mat.translate(0, 0.5, 0);: l7 _( R. b# k4 X) S
5 y5 I% P$ e1 Y G# b- function create(ctx, state, entity) {: L) m. y- E" g
- let info = {* }7 u0 w5 ~1 t* D2 t U+ p
- ctx: ctx,
" }2 _- o8 X3 \ [2 ?) _ - isTrain: false,3 w w& T( t, \7 b
- matrices: [mat],
+ F8 `6 x2 a5 t+ ?( p - texture: [400, 400],
( [6 r6 k: E" [ - model: {2 e$ ]+ U$ e' u
- renderType: "light",1 s3 Y1 w" h* S3 O( V* ? [
- size: [1, 1],
3 E7 p {, L1 g- O: m: U0 |) M - uvSize: [1, 1]/ U$ b1 J: ~9 h3 O( a
- }
$ ~$ h9 X' G: ?8 }' { - }2 o. U* u, v! ~2 T& G% j" J9 O
- let f = new Face(info);# ?4 l: H& |" O/ k0 z. ^
- state.f = f;' Y1 f$ {& a/ U5 t# O; a% |. ?7 G
4 G, k0 B/ M! P1 [! T& n+ P- let t = f.texture;' m/ o- T" `3 u/ H9 P$ P k: E
- let g = t.graphics;
! V1 T. W! M1 d7 L; C+ h; e - state.running = true;
; ~) J- t* y# C3 U0 Q/ h; W - let fps = 24;
6 u: n! y: E8 l8 d g - da(g);//绘制底图
2 x9 U! k' g- K/ M$ T4 O( v - t.upload();
. e- y5 U" \- R9 Q) x' ]. _ - let k = 0;1 l; f* d! ^8 ^" L, s5 z) |5 G
- let ti = Date.now();3 r. X n; ]" x8 z3 V: `% W
- let rt = 0;; F X0 w" g; w4 V
- smooth = (k, v) => {// 平滑变化$ W0 `4 F* P) C" b
- if (v > k) return k;
, E. x/ t7 @ r9 w$ O: Z. i r - if (k < 0) return 0; T+ D( K$ W" W, }8 P P
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
* l( [% x2 V0 j9 I; T - }
; B( R: l) \ _ - run = () => {// 新线程5 [# H$ y7 I" b' R6 D; P9 Y, i0 n, p
- let id = Thread.currentThread().getId();; U: [! d, Q" b+ \% }
- print("Thread start:" + id);
5 Z" X) ~6 c. L1 v" L - while (state.running) {2 a% l* y' B: s
- try {
5 C9 d2 }* N+ R4 v, |& T x3 B% Y8 ` - k += (Date.now() - ti) / 1000 * 0.2;- m/ }6 Q% @ W
- ti = Date.now();
1 M% F/ h! Q, b% S - if (k > 1.5) {) J& y1 e& O, R1 F i W2 O( @$ Z
- k = 0; {$ M' D% m3 K: E' M, A
- }
" C. G# A+ E& V. D - setComp(g, 1);
0 v( E$ w5 k: Z* `9 a d - da(g);( t6 l/ U5 p( h: e
- let kk = smooth(1, k);//平滑切换透明度
/ v, G7 H" D8 ?( j9 j - setComp(g, kk);
( x) ~2 b7 B, f3 i/ k% k4 T; l - db(g);
' R6 i% j0 K1 k- V" H - t.upload();
2 t# i% {9 n9 s) {8 I* p( \ L' o - ctx.setDebugInfo("rt" ,Date.now() - ti);
4 n6 ^3 j' V0 w. y7 W t - ctx.setDebugInfo("k", k);
! j {1 @- L6 G5 ^4 C) m - ctx.setDebugInfo("sm", kk);% F& |- t& z0 Z/ F! X; X: L
- rt = Date.now() - ti;: c4 j7 h# ^4 e/ h. w" y! Q& q
- Thread.sleep(ck(rt - 1000 / fps));8 D* C& J# v M2 J
- ctx.setDebugInfo("error", 0)
$ K& I6 w$ k4 ]% X, h' ` - } catch (e) {) ^. [0 y1 E" _5 L+ h! N) C
- ctx.setDebugInfo("error", e);5 p7 I+ t2 }4 E% w( r
- }
6 a6 K H% \6 P: h - }
$ l% w0 C& h- B! ~% B& D# g; q6 V - print("Thread end:" + id);0 i* t3 @: c' r \3 t, ?
- }
) ?' d1 e9 o; u5 K* o9 G/ ]0 D - let th = new Thread(run, "qiehuan");
* T( ]5 h- V: L2 J, `' H - th.start();0 c" U/ d6 I- v/ X7 J
- }/ H4 V y+ k# k
- + u3 s) I: i$ o( X7 U) ^! u2 z+ J
- function render(ctx, state, entity) {
/ _& M( S; F% S; z - state.f.tick();
5 \: D, _* e7 Y; W7 ]$ k7 f5 A- H+ `6 c - }" T# p& z; g* ^) `: q
& g- a+ m6 [9 J- K, J! l( k% g; R- function dispose(ctx, state, entity) {
" T9 p1 q6 l8 F8 o - print("Dispose");$ V/ ~* L' ?8 C- G' D
- state.running = false;2 J0 O- s- n% j+ J" H" i
- state.f.close();
' q- S- ?! i) D& Y; ^ - }& ^' H! ~) L$ R& m
- ! x: |# M6 I8 j3 n k) y
- function setComp(g, value) {- m, _0 G) f; `: k. C
- g.setComposite(AlphaComposite.SrcOver.derive(value));7 ~! j6 ?; B. H: W
- }
复制代码
- ?/ F! a$ T0 F1 t( 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。
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/ U2 b9 j i$ I" d, c' D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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