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- M0 G( N% I- z; t" G4 H: [: i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。9 i$ e5 M* ]" ?- }- Q
- importPackage (java.lang);9 Z( X w$ I; F, v9 Z* J
- importPackage (java.awt);! d- }; a, j, f% _5 |2 ^
- 9 g) m# A% Q( H3 Z- |6 Y
- include(Resources.id("mtrsteamloco:library/code/face.js"));% Y# X9 y% s) H& B! k r* k; ~; B3 F
: `8 b. c2 A! u9 G6 r$ ^+ Z- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
8 O& Q8 P/ D# {3 ]+ a7 ]( H8 c - , D* J+ u) o) h" {
- function getW(str, font) {
0 K4 \% [! }/ D3 X; @1 M( d - let frc = Resources.getFontRenderContext();; `: [5 }' K! F( l: R7 z4 ]% d
- bounds = font.getStringBounds(str, frc); ^1 F i7 @: s
- return Math.ceil(bounds.getWidth());7 R' p' i. _8 d( |
- }0 ^& q, e! n: Y- s. b3 C
9 T2 z- O3 c5 v2 t/ S- da = (g) => {//底图绘制, f- ^( Z5 Y6 q: b) T9 u1 T
- g.setColor(Color.BLACK);
x5 F0 f' G' d2 n$ t - g.fillRect(0, 0, 400, 400);0 ?& W6 R/ A# c/ s5 j# ~
- }
H. R8 S' j7 v" ?( |
3 i- |9 b( ^, \% ~- db = (g) => {//上层绘制
+ E+ F3 G" |2 z# v- u - g.setColor(Color.WHITE);5 T$ ~( k& @1 @* f) B3 f3 e& S- A% M( i
- g.fillRect(0, 0, 400, 400);) V' [3 b. [ s, J7 H6 ~8 }
- g.setColor(Color.RED);
) s2 Z/ c1 \; J% [+ O$ \( y8 U - g.setFont(font0);
$ q' [3 u8 ]9 Q! b) X% c - let str = "晴纱是男娘";8 E9 ]4 ]$ P+ E# S2 _
- let ww = 400;8 h- o/ ]8 Y' X1 m `& G1 N
- let w = getW(str, font0);8 c0 q" p: ]& H5 z/ G
- g.drawString(str, ww / 2 - w / 2, 200);
! Y1 |- @+ e M; Q( a/ A% ?; i+ h - }
: T: N' l8 c( C) ` - ' U1 l' i7 W( ?, z# t
- const mat = new Matrices();
: [: m5 [1 Q2 { - mat.translate(0, 0.5, 0);$ c* c7 e' f3 Z2 w7 d8 D# T
- 6 ^ b( E b/ y) d! i# _
- function create(ctx, state, entity) {
% u- C) P6 R% m+ a( P4 ~ - let info = {% w# S6 k/ L2 ]9 ?
- ctx: ctx,: O" {9 F: |! q8 w( h" x
- isTrain: false,( e8 W: h( }- Q+ H$ E! k
- matrices: [mat],
+ c( R5 ^! c2 h - texture: [400, 400]," y8 ^7 q9 x3 d% N' z0 j
- model: {4 ]3 x% Q/ L- m1 }! C! G
- renderType: "light",
+ w/ t/ J& d* w- e5 P% r - size: [1, 1],
6 k# F6 ?) D- Q- L - uvSize: [1, 1]
- K' C/ i- D3 z: E$ j8 |+ I S - }- d* X1 ?7 _1 p2 u; g0 B1 R! g
- }2 M+ [. i0 ]9 H6 u
- let f = new Face(info);# p: a" m7 W" I' }
- state.f = f;
* A, U2 _. b4 I2 D - 6 {+ P- j- v2 F( o7 g4 R
- let t = f.texture;' ]5 q9 Z% r) \) h# Z. a
- let g = t.graphics;8 g3 W' L: x9 p1 q5 e
- state.running = true;
* t/ A _6 [8 r$ l) z0 x u - let fps = 24;
- w9 @: f0 `( E: l - da(g);//绘制底图/ H% {1 ^: d6 H: I
- t.upload();
# v- c. o6 @$ i* i- N1 A6 H t - let k = 0;& r2 O$ |& B* k# w
- let ti = Date.now();
# w7 b% X# E5 D1 o - let rt = 0;, s- d& e! C7 f3 d- D
- smooth = (k, v) => {// 平滑变化" d" E( i& ~3 k9 S8 j: |+ C2 f
- if (v > k) return k;
! o8 @$ ]5 L6 }3 {* r3 l1 M - if (k < 0) return 0;
2 P) h! J6 U! ~( g- u0 a1 S7 { - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;: @1 [( ^; N( m/ ?0 Q1 b
- }
2 P; h: A. _4 o0 u - run = () => {// 新线程
7 A; X v0 r+ t$ R - let id = Thread.currentThread().getId();
, V: z. W7 ]( f. y+ l8 t9 L - print("Thread start:" + id);7 V* J2 b4 E% X" o
- while (state.running) {4 t0 D7 ^$ l& M' F
- try {. |; j# |. ]: }6 c/ m
- k += (Date.now() - ti) / 1000 * 0.2;# H4 S0 y+ Y5 B: c( z
- ti = Date.now(); E! t! X5 w4 k9 z
- if (k > 1.5) {
& f+ T* F) V3 f" D" B - k = 0;& i6 b/ F; H* k/ f
- }
g" f6 t6 e* s6 L5 @1 X& c9 b7 J - setComp(g, 1);: I' t, s) p$ ]
- da(g);& a) ~/ u. b) E& O, x
- let kk = smooth(1, k);//平滑切换透明度
" P/ \* K3 G9 D. j( B" p, {5 V9 j" b - setComp(g, kk);! p Q/ G0 l3 k! |% G: K
- db(g);
/ ~: D. D# I3 x& K8 k" l* N - t.upload();, S# l$ N6 Y: e, N$ Y# n
- ctx.setDebugInfo("rt" ,Date.now() - ti);9 L' q8 a l+ M% t7 Q8 N- l
- ctx.setDebugInfo("k", k);
5 N$ ?5 W9 C) `7 n - ctx.setDebugInfo("sm", kk);# o H, c0 ~; g* O
- rt = Date.now() - ti;) \* z8 O+ y/ M' ]( ]6 ^
- Thread.sleep(ck(rt - 1000 / fps));
* _' F/ Q0 u1 e+ B7 D% J* w - ctx.setDebugInfo("error", 0)1 f1 e- ?$ ~. ?* \2 c' d% f6 c j k
- } catch (e) {
& g6 K) P1 a" ?' m - ctx.setDebugInfo("error", e);) S2 r6 r5 h( w8 R
- }
9 a2 R5 H- \+ u5 n - }/ r% y+ m! [6 p6 k) o! R
- print("Thread end:" + id);9 c% |4 Y& t7 R
- }
( U- ~7 c1 B) r d8 c - let th = new Thread(run, "qiehuan");1 Y2 I/ T, {0 v
- th.start();; @8 V! X. p' M: e! F1 J
- }$ T# ?0 G7 o( c" [) U4 D0 ]2 d2 ]
8 e7 C+ |) Q+ k. w- function render(ctx, state, entity) {' s, g) k1 t6 t6 e/ ]
- state.f.tick();
" ~( b/ p& { O3 @7 {2 [ - }( F. t5 _3 A9 s$ A. M& C
- ) k# T& S" e( [) Y8 r
- function dispose(ctx, state, entity) {
( e0 T6 J0 u; D# j ^. N6 x, Z - print("Dispose");" n& o, _# D N8 s5 r8 R. `9 e% ?
- state.running = false;$ P0 F% b" j; h
- state.f.close();
# ^3 f- t( z9 a8 q. v - }' O/ t9 W* x9 z" B g8 j- U
3 g: f- j( N* h% {# I5 e; q- function setComp(g, value) {
# D t. [6 M8 o) R; H4 ^ - g.setComposite(AlphaComposite.SrcOver.derive(value));
7 p. O$ X) Y6 l - }
复制代码 % i, b# ^; y; u# {; h+ c
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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9 o/ F( s7 U0 ?/ |! _6 U' _* ^) S7 c7 O$ P0 h6 U
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 G; Z: h1 Q( w# J, h
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