|
|
还没有账号?赶快去注册吧!
您需要 登录 才可以下载或查看,没有账号?立即注册
×
$ T g5 w0 n6 _5 W
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。
3 Q' z) z* `5 N! M- importPackage (java.lang);& T9 } `9 ~* x0 k1 B
- importPackage (java.awt);
5 [( C- U5 D3 t& X r: k
' y8 t+ k5 B7 Q8 z* t- include(Resources.id("mtrsteamloco:library/code/face.js"));
$ T' F8 ~; H3 f' P6 S( j
: k% K8 H8 v9 h+ l9 s; Y, ?5 J- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
( J% _$ d- u( `/ P( s% S - $ C- ^( ]/ B" _
- function getW(str, font) {- K+ t$ o6 A* G/ c2 r
- let frc = Resources.getFontRenderContext();5 e. D% Q# f0 c; p
- bounds = font.getStringBounds(str, frc);
1 _: n7 z0 c+ W5 t9 X' f" ? - return Math.ceil(bounds.getWidth());+ k: C; g) Y, X7 ~
- }, W- Q r) g, `$ y0 B3 S
$ `/ q- l8 z! S+ F7 ^( _7 ~$ {' u0 @- da = (g) => {//底图绘制) T- a; B& ]4 J7 c, u
- g.setColor(Color.BLACK);( z6 q+ C: R4 {/ l9 j1 c
- g.fillRect(0, 0, 400, 400);1 Q. O. v1 w5 f- h" ?
- }) B7 @9 G6 ], n' k8 F7 D$ `
! F- `9 n# a$ N% t/ @& l9 Z [- db = (g) => {//上层绘制
+ X# n0 y( r+ a1 z3 ]) i1 j - g.setColor(Color.WHITE);3 |5 m( q( O" C6 @: V
- g.fillRect(0, 0, 400, 400);1 q4 {, p3 r5 ?
- g.setColor(Color.RED);
8 o" F) l' V M+ z) ?6 o( e - g.setFont(font0);# c$ E& A" \* q- Z
- let str = "晴纱是男娘";( i/ V' C2 |* J" K7 t" e& |! b" r4 {
- let ww = 400;
( x! s( {' w j z5 v2 T7 r - let w = getW(str, font0);
7 D- }: G/ L+ [* X - g.drawString(str, ww / 2 - w / 2, 200);( o' a+ T, s1 G0 ~' f3 d4 Z
- }; Y. V* n% R3 W3 ]9 D
, I6 H% u) j/ n/ M0 K4 s( J- const mat = new Matrices();! V* w- |6 | c5 \% C
- mat.translate(0, 0.5, 0);
7 y& J: X. f: m" A! Z
E' a2 p) G) E7 |5 g1 q8 y" Q- function create(ctx, state, entity) {
8 q- p! _2 L: E, {( M - let info = {
2 a* K+ Z: m i4 C% K - ctx: ctx,
# ]8 d5 ~' k$ p' e - isTrain: false,
* ]# }, q+ f4 X3 k! n% k! [ - matrices: [mat],
' x- \8 f4 ]1 n - texture: [400, 400],4 E4 ]# z% P. m' \3 m
- model: {
; x" o+ c; Z$ u) t8 i! r - renderType: "light",8 ^- S. z# V5 X' M0 c$ {
- size: [1, 1],
: ~9 s0 l3 e2 x3 X5 n% _$ \8 g - uvSize: [1, 1]
4 h) X! r1 q7 M - }* O$ l' ^- l7 ]* r
- }
`- Z/ {2 E9 L, I8 X - let f = new Face(info);6 y( ~7 c' F+ j: J5 f1 C
- state.f = f;/ k. _( X8 P+ s
0 J6 a% @* d4 K" O. r/ C- let t = f.texture;4 s N1 `2 n) n
- let g = t.graphics;* _, V( V# t8 v% V& l4 z, b& a
- state.running = true;/ Z5 r8 p$ N! ]" T, R$ C; o
- let fps = 24;& G: ]/ E& G U$ \
- da(g);//绘制底图
2 w7 E8 d. C1 V7 D7 [ d- y5 A - t.upload();
; r9 I% v$ Z: E- J0 h - let k = 0;
7 e$ z: b) U: ^& ?# S I - let ti = Date.now();
' X% U) f" y. W& [ - let rt = 0;+ V1 i# |7 }( K4 ?
- smooth = (k, v) => {// 平滑变化3 z7 r% s, K" c* d
- if (v > k) return k;
1 b5 k, w; d$ ^# H R1 x - if (k < 0) return 0;% {' O# p0 W9 i" m# u8 w3 P$ p" w3 H
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;: j X3 ]8 x( s. L+ Y0 |
- }
1 _4 S1 _# ^: p1 ? J" _ - run = () => {// 新线程
/ c9 [( \$ R4 v( D - let id = Thread.currentThread().getId();) x+ I* j: J2 U7 V) W1 G
- print("Thread start:" + id);
8 v6 S! m1 P% \9 } - while (state.running) {
2 x8 }' ]: Y, E6 L ~" r6 b/ U - try {5 G0 H# g. @; f3 ~
- k += (Date.now() - ti) / 1000 * 0.2;0 a& r: U% L# S# k; I
- ti = Date.now();
' V, Y, S# ?. d% i - if (k > 1.5) {. g3 }" f/ ]1 N+ \0 x, r
- k = 0;: Y; Y: v/ }$ u/ Y, @$ Q7 o( N7 x
- }) ^7 P3 V: P! ^8 f$ K/ j" e: c
- setComp(g, 1);
4 ?* w6 u4 g I2 C5 C8 | - da(g);
/ m1 s3 J" ?* ^8 i, T - let kk = smooth(1, k);//平滑切换透明度! |5 V- w( L) d
- setComp(g, kk);
/ O- L1 d. E! x: F* v - db(g);; n" k$ u1 E/ Z3 Z7 Y' P
- t.upload();5 s4 R8 n6 s- }8 c7 Y& [5 `* a" h
- ctx.setDebugInfo("rt" ,Date.now() - ti);
: p* {7 q+ [6 m5 m2 _: @2 h - ctx.setDebugInfo("k", k);
7 R" W" n0 p/ M' e' Y; G, ]% G+ C - ctx.setDebugInfo("sm", kk);
" ]* ^4 [( P- ~( |: U - rt = Date.now() - ti;
3 ~9 H1 C8 E1 H p - Thread.sleep(ck(rt - 1000 / fps));- Z) r% K! P2 t) H' k4 k
- ctx.setDebugInfo("error", 0)# E) o' f% G9 f" v( U3 {
- } catch (e) {
" U3 J5 i# w/ P$ I4 @ - ctx.setDebugInfo("error", e);
# {$ `$ _* y" B - }) U) W3 Z3 V p. M: L& k
- }/ i1 X4 ]) o. ~0 q6 n+ l3 r1 o; X
- print("Thread end:" + id);
* ~7 j# E, q* m8 h0 R4 v2 N( b - }5 B$ ~6 g' d$ `8 T
- let th = new Thread(run, "qiehuan"); _8 l' O- t# Q- V5 c) a! c
- th.start();
, s* G7 `* W. C7 m - }
8 R/ v% Z- {. A* g - 8 ~, i0 l/ i/ H7 k
- function render(ctx, state, entity) {
) K; v- u I1 [3 d3 v: g: }+ { - state.f.tick();4 `* Z8 l* {, R; _" _) F* t
- }
$ s4 g* E8 P. p T. [* m+ h# ^& _ - : _, m+ u" D) t2 F% H
- function dispose(ctx, state, entity) {/ Q8 ~& j5 A" g1 X5 C$ Z. a0 H
- print("Dispose");) z* e5 [* h: B9 R
- state.running = false;2 } [! g. ~% \/ g# ?. p: O" \! i$ a
- state.f.close();1 W i1 ^& k# N* P) l* S6 r
- }1 c! s( U0 Y3 k! l
; e. j; l g: ]- function setComp(g, value) {
0 w& @8 c/ y$ l4 Q @2 q. Z - g.setComposite(AlphaComposite.SrcOver.derive(value));
4 _& ?4 d/ q' q9 L/ X - }
复制代码 + A* E9 _; U8 d* B% C; F
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。
8 u* Z- r! l( Y5 ~/ L* x
* {: f% L8 y% ~) W. {7 o; X2 O; C! |
% C8 _+ E* |, q$ D9 g3 r! g顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下). u8 @% |9 S2 s7 ~- E5 Q
|
|