|
|
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% O- k: V/ O
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 N9 y9 W% N# A# G g! s, C T
- importPackage (java.lang);
/ b; X( k' b* V. a8 C+ b - importPackage (java.awt);
$ u [- l5 D* e# M6 l - $ x! c) w; p, P, i
- include(Resources.id("mtrsteamloco:library/code/face.js"));
/ J7 G7 W6 U- _
' }, G& ?6 n# d- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
5 B7 t; M) u0 v6 [7 B
" r0 m/ \0 |4 s4 Q/ m4 {3 l9 d, T- function getW(str, font) {
2 n) O. K& {, _& ?( P- n - let frc = Resources.getFontRenderContext();
- S6 [% t; {/ [+ T; ] - bounds = font.getStringBounds(str, frc);) I" J. M5 N! r: a' U& n
- return Math.ceil(bounds.getWidth());5 \+ A6 s7 a+ I/ H
- }
$ E* o7 o) ~4 E* `% u
$ ~; A0 `& C0 `( i- da = (g) => {//底图绘制
5 y$ F P6 x$ k! S8 x: y( R' c - g.setColor(Color.BLACK);
& I. |( U0 C% V/ c* n% Z - g.fillRect(0, 0, 400, 400);5 l J- b, X2 d
- }0 c& ^% \* h$ {
5 h2 Z; B, N/ G* C6 v c- db = (g) => {//上层绘制2 h3 V! g4 J. U& P2 s! X) M
- g.setColor(Color.WHITE);
% j' Q- P+ v6 u) Q/ H0 b* E - g.fillRect(0, 0, 400, 400);. t; V- \/ P2 t% \& J0 w
- g.setColor(Color.RED);
7 f5 x) m G: b7 E - g.setFont(font0);5 V7 C2 g7 w1 G; ~
- let str = "晴纱是男娘";: W+ F9 I1 R: s7 M/ O
- let ww = 400;
% @5 W3 a: J. M$ Z - let w = getW(str, font0);' p0 w, A( G) {( V( o
- g.drawString(str, ww / 2 - w / 2, 200);
- \9 a( e O$ V) n u( f - }' E5 Y+ P( ~/ g" M3 f& z
- ; G2 l' s0 u% i% _ [
- const mat = new Matrices();7 f1 U" N6 c9 O7 }- F+ b O
- mat.translate(0, 0.5, 0);1 X! u& u" h. d: Q7 Y
- 8 k6 {; C1 B4 o/ W9 l8 h
- function create(ctx, state, entity) {+ ^5 Z( k `8 N9 ?) Q' x
- let info = {. N$ D# h& M4 u
- ctx: ctx,
% w- b- g0 w* Y7 G7 s" [' M0 W$ B& H - isTrain: false,
, B6 O f y; o- A1 T* {( j& V - matrices: [mat],; b. P0 `: ~! E6 O. G
- texture: [400, 400],/ P/ O9 }5 i( e
- model: {
# x5 U( s& n, }. u1 d# |. d - renderType: "light",$ R2 }% u% I3 P% T
- size: [1, 1],& o; O8 ]9 m, U, r: w$ k
- uvSize: [1, 1]! O1 o8 P. v0 B- n3 l: ]
- }
' q# }/ b1 Q' e' @ - }
3 ]2 `" R. a! [ A3 i6 |% | - let f = new Face(info);9 @5 }% \% E7 {; z9 B% ?% `8 y
- state.f = f;5 t% W% y7 Y# b% ~- r' f# G' Z
5 o2 }2 h" ~/ M& i- let t = f.texture;
& h6 U2 C4 P$ v - let g = t.graphics;( _% q. O/ C( W0 }% c5 z/ D6 m
- state.running = true;; ^: a% n+ L& q# k
- let fps = 24;2 R' i0 N; y# l# j. N' |
- da(g);//绘制底图8 _: w" T$ i" f, G. I# N, I
- t.upload();8 [# z4 [1 u4 u' h
- let k = 0;' M* B) x Z: X8 e7 z+ R
- let ti = Date.now();( N( I+ k" C/ h9 W
- let rt = 0;
+ h& J+ Z& k; Z. _9 B$ N - smooth = (k, v) => {// 平滑变化
! i# E) z5 ?# y; o/ _8 ~" l& o' I& g - if (v > k) return k;( l/ r% V0 N7 `7 n7 m+ B1 o
- if (k < 0) return 0;
4 C- q, `' h" @8 O1 }3 @ - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
- V. [0 e2 q, m9 ~2 W - }
# v* W# V( d( D. y - run = () => {// 新线程
/ R" A7 D3 s- u) S) n( N: h - let id = Thread.currentThread().getId();( o$ F$ [; ], k; K: y
- print("Thread start:" + id);6 d0 E* d8 G7 C- ?" ]/ ]
- while (state.running) {
1 }/ p) L9 Z+ ]2 G! k8 K1 h, I - try {
8 I, P, S: _+ y8 S: I6 ` - k += (Date.now() - ti) / 1000 * 0.2;
" I* V U' ?6 o5 l% y ` - ti = Date.now();+ v+ \% B. Q4 T# Q
- if (k > 1.5) {
, f5 c W2 R2 B: C - k = 0;% E8 X1 p6 k3 R, M
- }- i4 n B- ^, i1 O) v5 Y3 ]7 A5 Y( y
- setComp(g, 1);
# i3 E# s$ D/ I$ T - da(g);+ ]; B& q- x! ?* {) _
- let kk = smooth(1, k);//平滑切换透明度! k3 }9 Q* Y: A0 G
- setComp(g, kk); [2 S8 D: W3 J" \5 x0 e; H$ N
- db(g);& K/ d0 S2 y1 H) `7 I, V6 V3 \
- t.upload();6 N% T% E3 Q) d
- ctx.setDebugInfo("rt" ,Date.now() - ti);! Y6 b1 S* b: u4 r% q* R
- ctx.setDebugInfo("k", k);; D. k. m+ D0 k( t$ N8 }; }( R
- ctx.setDebugInfo("sm", kk);
; f4 [7 F s9 o$ j: f5 o& n - rt = Date.now() - ti;
5 m5 ]2 d! \; \+ o4 e9 t - Thread.sleep(ck(rt - 1000 / fps));7 d6 t- A0 ?( w( A' S* ^
- ctx.setDebugInfo("error", 0)* E+ m' P* ^0 O( w
- } catch (e) {
6 G: `7 p0 q2 t9 x) ?. R& l - ctx.setDebugInfo("error", e);. q' i# d3 _+ b+ a
- }
9 D0 d% Z8 v& X9 x u+ ` - }
/ L J S. q7 i2 o - print("Thread end:" + id); D4 r& L! v E; T5 s6 N5 f6 {/ Z
- }
1 Y a. |/ K; G- p9 X U* ^ - let th = new Thread(run, "qiehuan");, K$ t+ j; y* h+ ^2 b G& p8 C/ H
- th.start();
& K8 ~9 }- ]' W* j# Q; M# p - }" K+ s7 x, `1 i' x3 ]6 c6 ?
: P# @- E- o* q) i% C" C! K+ p- function render(ctx, state, entity) {
- G% j! C# ]- L2 b# g1 Z1 G$ x8 n - state.f.tick();
* Y, f5 c7 E9 N6 H9 F6 i0 z+ r2 N - }
h& d2 l* E6 } - 2 U/ m4 P( K. h0 s/ i p
- function dispose(ctx, state, entity) {
b, t: C! I) _) h* P2 c - print("Dispose");; T4 c0 `# ?& ?+ i
- state.running = false;
) Z! z; o& l. F: H0 g2 S. ? - state.f.close();
$ S( H2 g+ |8 {# V - }
5 f9 ?( _0 e0 |% ? m
8 ]6 F) f! M6 L% _: t9 o- function setComp(g, value) {0 C$ D7 A5 t9 ] z! r
- g.setComposite(AlphaComposite.SrcOver.derive(value));8 n7 X% n6 p9 N/ g+ a- U6 F
- }
复制代码
5 r5 h' }$ m7 M# N2 V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。
0 H0 A2 r+ }! D% q! d( U7 x9 c+ K7 Z Q0 s' @ n
4 S8 X3 O- E2 `6 q O4 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)
7 R% i! m) h6 j: i* J+ _ \5 T |
|