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+ ~, y5 h% W6 p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。' A6 t9 Q4 V% I& _1 ~( \; c* e+ n
- importPackage (java.lang);
( ]9 e, W% k1 U( B$ W/ ^ - importPackage (java.awt);: T2 G" I( G% Y) J9 D# i. R
& B! Y X# a; H" y- include(Resources.id("mtrsteamloco:library/code/face.js"));
2 u; o0 |5 Z5 }( i0 b" @ - 3 ~2 a! g, g. e. Q- }
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
+ ~5 U. t. ^* W5 f9 ]5 t
F8 x% C- O t" }+ u$ T- function getW(str, font) {
1 }( P& D, k9 p% T5 l" x5 n. M - let frc = Resources.getFontRenderContext();
( F3 g3 W+ y v6 _( U - bounds = font.getStringBounds(str, frc);
) f! n' k' z* W7 T9 x, C - return Math.ceil(bounds.getWidth());0 E* g9 A6 h* c3 A
- }
6 |4 |7 u5 a$ g, ~/ |
* ~6 p- m) H" d0 R9 M- z- da = (g) => {//底图绘制' T# l2 ]0 f4 z
- g.setColor(Color.BLACK);5 ^9 @' C$ \* t" j' y( ~
- g.fillRect(0, 0, 400, 400);. [4 J ^ z3 S6 E- g0 ~0 x
- }6 \) N3 g Z# L; \
+ |8 V' o- E. }$ `; ]- db = (g) => {//上层绘制7 N/ O( z3 L: n& v! |( o' m
- g.setColor(Color.WHITE);
( H8 M, }% L/ V - g.fillRect(0, 0, 400, 400);1 a- t, p3 t: P6 I4 d
- g.setColor(Color.RED);& C$ `$ V6 ~5 o
- g.setFont(font0);
6 f0 ^" z3 ?0 `6 e3 v7 A% c3 J - let str = "晴纱是男娘";& K9 D0 b/ k1 _& |2 K y
- let ww = 400;
6 D5 Y$ D( W5 e& @, K+ f - let w = getW(str, font0);" Z/ ^9 ^: Y0 u7 G3 x
- g.drawString(str, ww / 2 - w / 2, 200);
+ ~3 X) i+ ` s3 ?8 I& c3 x - }: \! d2 V- l1 s$ v
- * p- _. J' Z* ]' S' ?! Y2 @
- const mat = new Matrices();
6 \! `( j: b" G" X, M; i( E) K4 J - mat.translate(0, 0.5, 0);& I; y) v: K" n) b7 O
5 V( G! {7 k9 Y- function create(ctx, state, entity) {
+ \5 V7 ]8 M; I/ ?4 a - let info = {
! ~: g# `/ Q$ R" C - ctx: ctx,
- b' P$ [: c+ h; D - isTrain: false,
' e; G. P5 C( h' R U& j( S. L# y& E - matrices: [mat],
+ B0 ^* _+ q* _' G! U0 J - texture: [400, 400],
, H" O$ S ^+ _1 P# \5 P! ^& v - model: {1 \* a! v0 f& C. A( ~: j+ w, \
- renderType: "light",2 {; X0 K0 x8 \2 b
- size: [1, 1],* G2 L) P! _$ s! U m7 }
- uvSize: [1, 1]
4 }1 `3 @! l) `- d9 e- c/ } - }
7 D! k/ P$ K' I* a+ M - }
4 j; `0 k" e( _4 [5 v, u7 v - let f = new Face(info);
& q/ w6 K( u$ G/ w9 X - state.f = f;' l8 P2 \" g+ J5 K
|1 {) U" } U" G" ]- let t = f.texture;
/ E, t) x: H0 D! x2 N/ F- t - let g = t.graphics;8 p: e# J/ Q4 I! d/ t% L' B; D
- state.running = true;
( Q5 o! H- z' T1 H, K - let fps = 24;
8 x" o0 X5 u F. C) n6 q. P3 z - da(g);//绘制底图
; f0 z0 h8 R- K& U/ `& \) ? - t.upload();
* h( p6 w0 u, \) z9 u - let k = 0;
! Q# @) V" T2 R1 c, Z5 C - let ti = Date.now();
* ?0 m! D( Z$ |* K8 f8 [ - let rt = 0;
' q: D; l8 m' V* c - smooth = (k, v) => {// 平滑变化' @5 b: P2 W6 Y5 a. O8 E
- if (v > k) return k;
+ B% f5 |( ?% p | - if (k < 0) return 0;% k% c/ }- Z' ~4 p8 v
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;6 ?! v; l$ R" ?6 n& a; V# ]% [3 J
- }! M5 d6 }+ p! m+ ~. y
- run = () => {// 新线程
5 ]) ?5 M1 X) z3 `+ `2 @7 i6 p) R - let id = Thread.currentThread().getId();
- b0 e K) Y$ e( o4 m& ? y/ D! U - print("Thread start:" + id);- g6 \& f7 r/ c! x
- while (state.running) {
, ^+ i/ M$ r0 j5 y1 d% }! Y9 j - try {- T1 W& T( }& d1 V, T( J/ n
- k += (Date.now() - ti) / 1000 * 0.2;0 ?; e9 m! l4 z3 ^+ [
- ti = Date.now();
0 L7 f3 V7 p6 _. X; M; b - if (k > 1.5) {' ]( d2 s9 Q a2 g9 ]; s4 } d
- k = 0;
! d5 {+ J. N% y8 v" x - }
( Y" o+ u# |5 l! L - setComp(g, 1);
/ E% N/ b7 I) m5 b - da(g);* y* v( A; R+ D
- let kk = smooth(1, k);//平滑切换透明度& I% a6 z; b: K& V) {# L
- setComp(g, kk);
$ U7 S& t9 Z7 |8 g - db(g);5 |. X& `' }# s+ r- z4 a
- t.upload();& R7 ]) h2 n* w2 s9 }2 u. r8 K6 L, [
- ctx.setDebugInfo("rt" ,Date.now() - ti);" ^/ [- k* r- [0 O, L q
- ctx.setDebugInfo("k", k);' E! ^% O) l; q6 k( e4 g$ L' c
- ctx.setDebugInfo("sm", kk);
`2 u% k+ v4 l4 o5 P. I - rt = Date.now() - ti;; n- t4 t8 @3 D- o1 e- E9 `% b/ ]
- Thread.sleep(ck(rt - 1000 / fps));
% C( i) S6 H. K0 y* F/ W5 } - ctx.setDebugInfo("error", 0)# s6 i9 K- `* X. I. B; p
- } catch (e) {
1 ^& e: E; |* S' f' {4 ^; O - ctx.setDebugInfo("error", e);/ w' C/ ?' ]3 {8 |$ C& h$ t/ e
- }
: \) T% `5 H+ h) R* i5 Z/ b( i - }5 I% Q. i6 ]' D8 F1 l
- print("Thread end:" + id);
$ F8 P2 m+ s! F/ }9 f: C8 R' ` - }
9 b; E! ~% P- B( z$ i - let th = new Thread(run, "qiehuan");
$ `5 S; m# V0 s! y& e4 M5 V - th.start();& S8 W0 r5 ~5 O3 C
- }
$ N! K1 r0 [4 R Y
h7 e2 Q6 y5 p" Y- function render(ctx, state, entity) {
# u7 J: r; N+ P+ p G) |1 J - state.f.tick();4 z" v( |! k& Z% P5 l; s9 V
- }
* T K# F; C' i
! c, U4 b/ ~, K* x0 j# s1 n- function dispose(ctx, state, entity) {! v( i+ _/ m( @5 o; Q2 T+ e# N
- print("Dispose");
H3 h2 l! m& f& h" J6 `! K - state.running = false;
. \" Y. p/ p$ z6 c - state.f.close();
7 P5 I3 W5 P0 p7 ?0 M - }6 Q2 |+ z& g; l$ W) I
- 2 a9 a$ T# I2 H& S" m9 R2 x
- function setComp(g, value) {
3 K2 a7 t' b* h2 P - g.setComposite(AlphaComposite.SrcOver.derive(value));7 J; W$ }" d R# @8 r' t, _
- }
复制代码
% p* n6 g% s. _9 f1 I G* K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。4 r* r5 C7 ]9 U
, j) O! i, t$ k7 Y
; k5 H7 Q; q; S* T" b( K3 ~% P顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)1 M \# `+ D- q# ]/ Q
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