|
|
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
×
/ |/ m+ ?6 n/ ]2 [; H# |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 \( N: @1 H9 _2 `. A* r- importPackage (java.lang);
3 c' T' R) ~5 a/ N+ h+ \: O - importPackage (java.awt);$ o! C4 s8 S4 k8 `' a2 f1 d3 _
- # t7 b" V# Z0 d4 `; A5 S5 ?$ u
- include(Resources.id("mtrsteamloco:library/code/face.js"));
( b9 G3 }, k0 C" b7 \) X - 3 G; F o% @2 h* y- e, h( ~
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);/ t7 ]6 v# ~7 A! v' Q9 d" M
& H7 q3 i' [( |7 p- function getW(str, font) {
( h5 \& m/ w0 t3 w - let frc = Resources.getFontRenderContext();
! p2 g+ z' j) L! W - bounds = font.getStringBounds(str, frc);
6 _% u. n: X& M/ L - return Math.ceil(bounds.getWidth());
1 f& Q! e' l2 s! P0 W3 w- k6 { - }- c) r+ {- n, M1 I, P2 E
: J4 K& ^& T: Q. u2 Q- da = (g) => {//底图绘制8 I7 G" i. B0 l6 V0 e9 r* @
- g.setColor(Color.BLACK);
) S% g, f( G G" O! d' N* q9 ~ - g.fillRect(0, 0, 400, 400);: Z8 U' P+ i# q+ }. q# H
- }& V9 A* V$ P- l0 ?" }. A
* n5 w: v+ E1 ~, V! G- db = (g) => {//上层绘制) q$ j, E0 Z% D+ d; ]
- g.setColor(Color.WHITE);$ y' q9 K7 a7 n* H1 x/ I
- g.fillRect(0, 0, 400, 400);
2 ?2 S- z/ `8 D' i - g.setColor(Color.RED);
- F$ _) g* S1 S# L/ h% v; p# V' c - g.setFont(font0);! R" [ R; P4 W7 `" T
- let str = "晴纱是男娘";% d% J: J* j* o7 I
- let ww = 400;3 R, T& n4 j f T4 G
- let w = getW(str, font0);
+ }( t a3 I$ t, t9 _ - g.drawString(str, ww / 2 - w / 2, 200);5 |9 f3 s9 S& f$ D# y2 o% V8 N7 v$ R
- }
+ Y4 V' b% d0 \
: K& Q! Y, E8 x) ?, ^- const mat = new Matrices();
: u- k+ j4 J' L9 c% d - mat.translate(0, 0.5, 0);4 a, Z% C& X; U! ~/ t+ }8 I7 S9 ^
& y) `4 Q! Q' b- H2 e3 k- function create(ctx, state, entity) {/ j2 i" B. R* a
- let info = {
* f( r- S1 {1 I8 n - ctx: ctx,7 x: P3 m q3 Q7 o' D' E7 i
- isTrain: false,
. n3 _) ]; X& _! t8 H" \' u0 N% m c - matrices: [mat],9 t6 u2 o& D4 Z6 i+ V: m0 o
- texture: [400, 400],
. A! V, q( E. }4 @ - model: { V& ]3 x& f6 h" n3 ~. @# c. @
- renderType: "light",
2 J- ^# z4 e' E - size: [1, 1],; J2 G o* _, e- i$ E
- uvSize: [1, 1]
( D1 h: P( o; k6 B9 K - }
7 h2 b: ~' e7 }( I) B0 {; S2 w - }/ T2 c5 ?0 D/ J) i
- let f = new Face(info);
$ D. x6 T; q9 {. N* O - state.f = f;
1 p& d9 \ }0 I& P6 S4 h
. A" B6 H& Z& L( j- ^- let t = f.texture;& e' N6 g' W! h: q% K* Q% k$ V
- let g = t.graphics;7 V! k8 T- `6 i, H2 \/ N# q8 x0 C
- state.running = true;
4 Q4 O" k5 S5 P4 S9 U8 v - let fps = 24;" C' ~; K7 ^% } R) n- }" o
- da(g);//绘制底图4 T( r1 W8 k/ t. ]- o
- t.upload();
6 Q ~ E1 a# @( _: I8 U: f - let k = 0;2 O3 c0 D! h* ^6 X8 I- V! U9 Q
- let ti = Date.now();1 F7 J& x- a0 _% M6 V! a, M* Y# X9 e: I
- let rt = 0;; m1 L4 T) z4 E: A; h
- smooth = (k, v) => {// 平滑变化
' ?1 W+ @/ o+ H* \5 O N - if (v > k) return k;0 a* Q. Z$ i9 Q1 u- T* ?' x
- if (k < 0) return 0;8 e/ Y4 ?: E5 q: t
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
2 a& M4 L9 V w9 F - }
2 t% k2 |# ?% t3 [ - run = () => {// 新线程8 U& n4 D! R9 ?: O. h+ \; K; y
- let id = Thread.currentThread().getId(); M/ l6 L! [9 X+ y1 a8 {) R
- print("Thread start:" + id);, ~% I" U; i1 |: g
- while (state.running) {
. J6 |$ S) Z+ {9 H! B - try {
& W9 A& C& b6 H5 i4 b - k += (Date.now() - ti) / 1000 * 0.2;
; K4 Q; v, y" v8 J* B - ti = Date.now();
( i( d Y0 b1 t4 J, A3 O7 o+ ], L - if (k > 1.5) {
l1 G D& B f( y: T5 o - k = 0; i0 }0 Q3 g1 y& v4 w
- }* u U, Q$ R9 J% Y3 p
- setComp(g, 1);
: B9 ^: `# e: c, t - da(g);2 M* z0 ~1 t% t5 e: f
- let kk = smooth(1, k);//平滑切换透明度
: J2 M. X1 ]- X* E% y - setComp(g, kk);: q5 A. x3 X( T
- db(g);, i- b: l a, P* ]1 v
- t.upload();
' c- B4 {: g I" s9 H1 H - ctx.setDebugInfo("rt" ,Date.now() - ti);9 Q5 w+ y; P* _
- ctx.setDebugInfo("k", k);
& H1 n D1 Z4 R) ]/ r - ctx.setDebugInfo("sm", kk);$ e+ t6 V/ Z( v- Z0 L
- rt = Date.now() - ti;
% M2 h I+ m9 _* a2 ] - Thread.sleep(ck(rt - 1000 / fps));
( A" p8 b0 i2 R9 N' l1 Y - ctx.setDebugInfo("error", 0). B H8 C! Z s: q
- } catch (e) {, l) ]9 V: s2 M& j4 ^9 x
- ctx.setDebugInfo("error", e);
* C. @5 a" E9 }: c# x: U2 x - }
0 I5 n" A% `1 p8 o8 I/ C% H1 { - }
, \3 w8 j: b/ R0 f" y" a7 O* E - print("Thread end:" + id);
0 ^$ o/ |& u# `8 R: z7 I) h - }4 Z( G: g4 F e+ C# v( o7 ~2 ?
- let th = new Thread(run, "qiehuan");
; Q& B8 G% B* V4 X0 M - th.start();" ^ Y, Z7 Z) Q0 O
- }( O, l# x$ b1 b% H1 E1 D: P6 U& C& ]
' U% Q3 c1 [% l" w- ~* g! V/ z- function render(ctx, state, entity) {: `8 C [6 C9 F" F
- state.f.tick();
( L5 A, }7 ^' x J - }
! U9 E- @$ j" L5 ~: k2 x& x - 2 V; Y+ E& U5 t1 L
- function dispose(ctx, state, entity) {
/ V9 ^- X X7 C: u; B - print("Dispose");7 n- T) e/ `9 n. G: ]) }7 {& J+ B
- state.running = false;
& `& [" {* l8 v) H8 r - state.f.close();6 T7 A2 q% ]) T' f* q* t# t
- }
, s& u9 L8 U) f$ j* G" J
( Q, n3 @4 K8 e& F& N3 t- function setComp(g, value) {- n$ U L6 |1 u5 J6 O) c+ w
- g.setComposite(AlphaComposite.SrcOver.derive(value));
# a* e- ] ?* {( E/ c - }
复制代码
# A6 R: h4 A( |- f7 m; _% t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。) ?5 w: X) p* Q d: Q
) F3 y& y G F7 ?& e' c
) u. [" K, ?; z. U( 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)/ P$ O: h, ~# j f( K0 n1 o0 I
|
|