|
|
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
×
1 ]* n* U9 l. i( l# G
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 X9 E/ K5 N2 t8 E1 f9 l
- importPackage (java.lang);
T5 c. L* ?/ b/ f) f - importPackage (java.awt);6 }* J* v4 p* H9 L' `! D9 S0 r J
- + l$ s1 X0 b+ S9 t2 N" K- w
- include(Resources.id("mtrsteamloco:library/code/face.js"));2 O6 }, [) r7 i. p9 O* X3 c
- , a, b9 ^5 S/ C9 e: K7 C3 ~ z
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);2 R, s1 J% R2 w1 U( c& G. k
& ]6 K1 ]1 x4 q1 c+ l+ l- function getW(str, font) {
7 m9 Q5 o. u; e# u" e( Z - let frc = Resources.getFontRenderContext();
2 o2 C" {6 y' o- x! \: _4 e/ D - bounds = font.getStringBounds(str, frc);/ W; b- f4 {3 J7 o, C
- return Math.ceil(bounds.getWidth());" w% i/ @4 ?/ g" a# r
- }
; Y5 y9 ?# u" A$ e' n - " k1 K2 P( K0 `# m+ z) {- N5 y
- da = (g) => {//底图绘制
$ I/ Q6 j1 x; F2 e8 u5 [ @ - g.setColor(Color.BLACK);5 l$ W: |' M3 N1 o) A# P4 _6 f
- g.fillRect(0, 0, 400, 400);# k- A6 Z/ I9 u
- }
/ s( G1 {* P1 Q4 K$ ~& d - u: g7 L, m- G6 W* B8 u9 p
- db = (g) => {//上层绘制
. E4 ^' h1 i2 Z* I& o. c - g.setColor(Color.WHITE);
, U; ]5 t+ C4 G7 d9 q; S - g.fillRect(0, 0, 400, 400);9 ]4 u. t% a# i: g4 C3 f
- g.setColor(Color.RED);
. W* M& W! k+ a) z4 X7 I - g.setFont(font0);
. x8 \. N5 u( \( s/ k6 U - let str = "晴纱是男娘"; L' r, s" E7 r0 n
- let ww = 400;* U; T) d0 P3 B2 t9 @# q( b8 b' g
- let w = getW(str, font0);
2 N8 l6 Y+ b5 a9 j" o$ P; l: U1 y" l - g.drawString(str, ww / 2 - w / 2, 200);1 a. j/ O9 V+ B+ ~
- }- `4 a; \! V6 O0 d
: u9 y% a/ W6 c+ |4 q- const mat = new Matrices();
# ?; _4 G! f3 Q0 J2 M - mat.translate(0, 0.5, 0);
" k* l5 v# K' c' G+ m) n
0 W2 ]0 _4 S1 {" O* c( }! s6 q v- function create(ctx, state, entity) {( n8 d) H, A- J8 @3 z
- let info = {6 G$ M0 f { a: f$ y" a4 X; f" i
- ctx: ctx,
1 }) A' d; y; R, J9 ]9 C0 V - isTrain: false,/ Z/ |3 ~6 p; E3 @" P
- matrices: [mat],
' O) H- ]+ n& ]5 f: Z/ | - texture: [400, 400],
' E5 |) T- f6 M7 J% G9 U$ D - model: {( Q, J. W+ W: v! B( D
- renderType: "light",
* j3 R7 L0 d+ q' k w B( n: _ - size: [1, 1],5 F6 o. N( t! u6 V N
- uvSize: [1, 1]
3 j8 [: P- U8 ^3 q0 B Y6 f - }: t+ z6 y- E0 O' Y, v7 Z& U
- }
4 d2 S$ S; a: Q, y - let f = new Face(info);6 m! G0 c L6 M2 y! h! c
- state.f = f;
; d4 K8 D8 W3 s - ) b8 z7 i0 k% b! G4 g
- let t = f.texture;" |/ M: ]4 _ Q
- let g = t.graphics;
! _. s- B( P$ [5 M: h7 X( v& C" ~8 V - state.running = true;
1 A. ]. {1 C7 ~+ v- m& ~9 I - let fps = 24;
( s% b/ R0 c) T0 a5 d- G; d - da(g);//绘制底图2 ^0 o! L+ O# x; K0 k8 o! z k
- t.upload();
1 ^& f5 C* |' R1 i* [( S8 W5 p7 Q - let k = 0;8 {4 _6 C7 H2 p7 F& ~$ f1 ? `
- let ti = Date.now();
3 c& x- A. J" a8 M - let rt = 0;
! d d4 q6 j2 h. c; } - smooth = (k, v) => {// 平滑变化5 h# ^+ h& L% v$ m
- if (v > k) return k;
! t$ V; G" ~. \ - if (k < 0) return 0;
1 }: _+ C3 ^4 A- V: Y - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
/ b7 K% j8 N) i, f) B6 e' { w - }
; U0 r2 ~6 I- i+ ~" O+ b p* N - run = () => {// 新线程
* t$ p& B- e- W - let id = Thread.currentThread().getId();
0 R9 a/ K! D' ?4 X. Z5 Z+ b - print("Thread start:" + id);/ p' W, [8 ?6 V$ ~ D) E
- while (state.running) {0 u' U2 G6 Q+ `
- try {1 B: K0 N& e6 {- l( g/ o6 b
- k += (Date.now() - ti) / 1000 * 0.2;, K- O+ N2 N/ u+ z+ L+ J
- ti = Date.now();
8 F7 Y( e' C+ r8 V0 K9 b& o- X - if (k > 1.5) {$ A9 O [$ o" v
- k = 0;: R7 X }6 A0 R$ X
- }
1 ?3 t2 B* l) N2 ]% r - setComp(g, 1);' T5 {# b' ]. P" _4 h9 y% ]
- da(g);
- t. @4 [/ G* O - let kk = smooth(1, k);//平滑切换透明度) T1 A8 a0 X+ T5 n- O: C
- setComp(g, kk);
9 K; P* c$ ^6 J' C1 m8 z2 S - db(g);
1 n% A7 \! Y7 ~ W9 _0 E3 a - t.upload();+ {- l: D! _1 h/ i9 C# a
- ctx.setDebugInfo("rt" ,Date.now() - ti);
" d! S% R e m5 q - ctx.setDebugInfo("k", k);
. A P0 H; T2 ~, b3 t8 h& F - ctx.setDebugInfo("sm", kk);
X- k1 y& w$ h - rt = Date.now() - ti;! J/ @# C1 |2 {* \ u [4 n7 s# E
- Thread.sleep(ck(rt - 1000 / fps));3 U3 W! X G1 J9 Q; g
- ctx.setDebugInfo("error", 0)
2 k$ [& U1 H: M& _' V9 O* y - } catch (e) {
, ]& l3 z2 |( o+ d: v - ctx.setDebugInfo("error", e);
4 ]. N, j' ?, D6 b9 c4 F - }4 _: ?4 o, N9 {$ b" I/ H# f/ j
- }
1 S( l5 C* N4 ~1 e1 h$ X. A - print("Thread end:" + id);& O4 y2 w0 M# x! j& @* I( A
- }: g% ~$ ^3 N) N; g) C
- let th = new Thread(run, "qiehuan");
4 K, g/ f; x) b. v( V$ G - th.start();- Y' D. I% k: E" y2 s4 g6 J" H
- }# c) R8 Z$ p' [+ ]
- . ?! }) U& A# c2 Q ^- Z
- function render(ctx, state, entity) {
& m' t8 b, l e$ {7 K - state.f.tick();
2 ^1 Q; E1 k) K, }9 `3 E - }
6 U( @0 V1 S* R) f5 [# i) y - 6 ~1 o) ^. L" ^. F, t* N& y
- function dispose(ctx, state, entity) {/ p6 ~! q, `. S. F/ `1 c
- print("Dispose");( ~: L6 b6 c6 U
- state.running = false;
( Q# B' v1 L* `/ e - state.f.close();6 u1 P) U- e! V/ v! c
- }
6 w. e c( p3 W% G; d
/ z# r0 V4 V# q0 P% \& w4 {- function setComp(g, value) {& `7 d% `+ @* B; R; G {, X: g
- g.setComposite(AlphaComposite.SrcOver.derive(value));/ g0 g! U. [7 r* r( I; n
- }
复制代码 3 [% A8 ^' X }! {+ j
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。
R# H2 r6 r; c! M2 J7 Q" q5 z# h
* [2 S O0 d" Q6 m" ~: N1 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), B0 U7 l! N1 L+ |& x5 V9 r) T
|
|