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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。4 S6 T$ ~6 ]. y' _' T( y
- importPackage (java.lang);
0 {+ c# O7 h7 }& |/ E2 _* P - importPackage (java.awt);3 P2 {" s4 J3 ~& p
- . q0 f! `. P" r7 o+ p- i# m8 e
- include(Resources.id("mtrsteamloco:library/code/face.js"));! M r5 }, f% H- M7 Z- w
- 9 s3 f$ g6 D* `5 N3 J7 }
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);( p: {& ^4 c/ M# ]" y
- - E, I, d: H' R
- function getW(str, font) {
* l# Z, }7 H0 S* u - let frc = Resources.getFontRenderContext();4 o1 o* H% u' }( l6 J" b+ ?8 N
- bounds = font.getStringBounds(str, frc);
( D& S! ^$ F2 I; k, u. { - return Math.ceil(bounds.getWidth());
" V6 I7 R) @- G8 k - }1 G' ?& R( i! z5 [4 F
- 0 V9 D- b+ a* l+ E# ?
- da = (g) => {//底图绘制1 ^$ ?8 z9 `$ E
- g.setColor(Color.BLACK);
2 \. @- j' ~# E' j7 T - g.fillRect(0, 0, 400, 400);( t! v4 U$ S3 Z
- }& d+ {1 e, z1 Q! e! K& {1 S5 |
- 7 Y( F: x% i0 e& c/ l6 @1 q, h
- db = (g) => {//上层绘制3 R* o- m) R9 _, @" Z. D; u
- g.setColor(Color.WHITE);: u8 I" P) o* P) v
- g.fillRect(0, 0, 400, 400);
# o# g( k3 n3 C" P+ G' n; n: n - g.setColor(Color.RED);
( @6 D% M" s" y% c5 p - g.setFont(font0);
% P) O: t5 z# ?8 A) ~, M - let str = "晴纱是男娘";) N2 m1 h+ q |5 v! F% G2 ]
- let ww = 400;
- u2 i8 s" V% q* p' _ - let w = getW(str, font0);/ q& R* ?5 X: |* i0 W/ M: t2 ^
- g.drawString(str, ww / 2 - w / 2, 200);
2 F' W3 ]' N! t3 u+ c9 n6 Z - }& H7 ] h7 g4 ]1 x2 J
- 4 f+ B# ~5 d# e0 A# n7 _. F
- const mat = new Matrices();6 J0 h/ _/ M# b. [3 w" ]
- mat.translate(0, 0.5, 0);$ X( ~% V6 V! |" _
5 {0 g6 o! k% n- function create(ctx, state, entity) {# V4 {" c( { K" T& S% J/ Q' @
- let info = {) F& v4 D) x& C8 s& j( l0 X
- ctx: ctx,) h9 \& ] P% `9 `, K
- isTrain: false,, D2 p8 M) a' h+ m6 A
- matrices: [mat],! _( K7 R; J/ ?
- texture: [400, 400],* c2 n- I7 ]$ ]# z0 e7 H$ g: B
- model: {" w" |7 y P9 P" F
- renderType: "light",, l8 p+ }. _' T5 d+ |8 I
- size: [1, 1], x! ] y/ [9 C& m7 V: [
- uvSize: [1, 1]0 s7 X) ?2 b0 _" S
- }
P7 _/ K6 D- k9 i/ X A, V - }. _; z9 E. [% y8 J: x8 j
- let f = new Face(info);
w& E1 B1 n# ~7 Z* ?; H2 [% n - state.f = f;5 M/ A& h" ?" |. ~& G1 Y; Q
/ Z7 E+ _% Q$ O2 P+ s* q- let t = f.texture;( ]# P# w) n1 f7 p
- let g = t.graphics;
2 {6 @. O6 t$ f9 _! S" O" p$ r# W - state.running = true;$ p7 A* v, T8 }! P. S
- let fps = 24;7 c+ P" C$ Z( w Y) R% q
- da(g);//绘制底图( L/ H, k; t4 R$ I+ e7 l
- t.upload();: P _$ B$ T/ F) W _% B0 N$ h9 z: |# ]
- let k = 0;
% U1 d5 V. x$ P& u- e - let ti = Date.now();
+ K) u6 ]% F% r. S+ E- v1 A% o, \ - let rt = 0;
1 V, [# {" l' [8 H4 @( K* U - smooth = (k, v) => {// 平滑变化% B8 k9 N6 v5 e3 i0 }
- if (v > k) return k;# u( Z& p* S# K$ x; E
- if (k < 0) return 0;
6 s; J: m6 E+ U* | - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;: Q8 A" _, U& P! E5 W# S% o8 m& \
- }; I7 k( V5 p2 B. @9 {' c0 g
- run = () => {// 新线程2 H; c! M/ z; y' k! f
- let id = Thread.currentThread().getId();, R; q* s4 p4 A- {9 Q' t! T
- print("Thread start:" + id);: @4 o4 y$ s1 i* [. @& W
- while (state.running) {' L% g9 {5 h: S
- try {7 ~% [ ~% \' k$ ^: _! u- K
- k += (Date.now() - ti) / 1000 * 0.2;
: l) O5 F) P8 W* f7 n4 u( u! h - ti = Date.now();. \& |/ }3 G8 B# \
- if (k > 1.5) {4 x5 N: M4 c5 X$ s- _
- k = 0;
+ |( h/ f! w) D, O' [5 J1 W - }
! O1 m( H: n% e - setComp(g, 1);
, E9 a. u/ D5 r7 S - da(g);9 X; @0 t5 A( j8 f. ], d Y
- let kk = smooth(1, k);//平滑切换透明度2 a7 S. U1 @: C! v# \" m. _
- setComp(g, kk);
$ M; {/ f% s( i V - db(g);
& a1 y+ p, \) Z' Y& T" }$ o9 q - t.upload();* y' @% a# r; D& j& c% P3 h
- ctx.setDebugInfo("rt" ,Date.now() - ti);4 N9 G5 N9 h8 L1 F3 @: n+ }
- ctx.setDebugInfo("k", k);
! s. w3 p5 q( W - ctx.setDebugInfo("sm", kk);
1 _5 ~; n3 p6 x) j! S - rt = Date.now() - ti;1 ?: y O7 Z( }7 }; N
- Thread.sleep(ck(rt - 1000 / fps));0 }; Q' o3 J8 a% |6 _1 ` C' ^
- ctx.setDebugInfo("error", 0)0 D2 K3 j, ?# C" v
- } catch (e) {
+ u) w/ U: `3 M( [" } - ctx.setDebugInfo("error", e);
( v" {7 f* h: ?# M3 s - }
& B- _: q, K$ j: Q. J - }5 v/ N' F2 g+ P' p. L, y
- print("Thread end:" + id);
7 y8 x+ z6 q/ `3 s. |6 M% L) D - }9 ~0 \/ e# g& R {$ A) |( o! Y
- let th = new Thread(run, "qiehuan");1 V! T B% v: y {
- th.start();/ l7 v) ?3 R% u2 h) [8 V, d u
- }9 O- H9 _( U; L* F
- % ?9 k$ r$ a1 z2 k8 D
- function render(ctx, state, entity) {/ N" f+ ^% a/ @5 m7 r9 p% W
- state.f.tick();) _4 |+ V7 G5 s
- }
u( N0 g' N) n* L2 U1 {! P
8 } O5 R+ g2 l5 K) @- function dispose(ctx, state, entity) {
% a& p0 c4 f ]+ |; \6 a( d* s - print("Dispose");8 Z3 E: P, P# X& }/ i8 v
- state.running = false;
7 I# U9 R3 l# `- P+ _9 D - state.f.close();! I( T8 n, v3 X& m- y* J
- }
/ n" l: S! k- F7 {$ Q - # l! k/ v7 I, U
- function setComp(g, value) {$ g7 A" k) T y3 ~* }) ?$ n0 Q
- g.setComposite(AlphaComposite.SrcOver.derive(value));9 r, k1 {+ E& s* T" g3 j* P
- }
复制代码 9 J8 x8 K( H, Z+ H! k& Z! ^
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。$ f1 q; B/ v7 w C5 X
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# u1 k+ h* ?/ z. a% `2 V1 U5 f顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)$ [9 F" v/ `, B4 g, B! ?6 o* Q
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