|
|
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
×
+ U% k% T/ P( C) Y* `$ ^- f' E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。
m6 w) M7 I% L- importPackage (java.lang);& q* o. @ D$ U0 v* |2 ^) k
- importPackage (java.awt);
; K# ]" ]) }$ X
5 H4 a; z5 ?0 l; ]- include(Resources.id("mtrsteamloco:library/code/face.js"));
% c* e I- k( Z1 j; X
% j( l7 { l- S' w; ^$ C- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);1 c& q; N0 ]4 v6 A* I4 V! L
' n- Y4 Q; `5 M7 H- function getW(str, font) {
$ n7 A1 Z8 y3 T% o7 x - let frc = Resources.getFontRenderContext();
5 [# L$ v( k3 q1 A$ G9 r - bounds = font.getStringBounds(str, frc);$ k0 H: @! w4 b" [
- return Math.ceil(bounds.getWidth());
m2 X7 _4 u. ?. d- d/ Y+ [3 S - }2 `0 B4 m4 X7 o$ l7 ~
- * b7 _0 ?1 `* B
- da = (g) => {//底图绘制
4 E; j# [+ H2 O2 j7 P2 d8 e% G - g.setColor(Color.BLACK);& V% j; p( n. D V. Q" D+ `! Y
- g.fillRect(0, 0, 400, 400);
$ |+ L. c9 a9 q. J6 y - }1 F; F, }5 m0 v1 g/ i
! p2 }9 }0 V" `- db = (g) => {//上层绘制! W/ k+ {: G8 C R, }9 i3 N" h
- g.setColor(Color.WHITE);
. F# }9 z$ H9 ], R/ a: U! j - g.fillRect(0, 0, 400, 400);
5 r5 K9 E$ h8 ?' T* t" [9 Q - g.setColor(Color.RED);3 j5 w% Q5 _; w% [3 ^. ~" o8 n
- g.setFont(font0);* f# O& \0 F: V3 j9 K! }% q% }
- let str = "晴纱是男娘";
( |9 y& \# V( s5 m* c - let ww = 400;
p' t$ D8 S/ Y+ n - let w = getW(str, font0);
+ J/ B9 W# d/ i7 N" I8 Z8 ?9 z - g.drawString(str, ww / 2 - w / 2, 200);+ \2 v( Y, |5 m7 k
- }9 d6 y8 W6 Z3 w' S
- s! y1 k9 H& T ?" `' _
- const mat = new Matrices();2 Y* E" K+ I# n
- mat.translate(0, 0.5, 0);
. _. \/ E1 @, G$ |" V9 C# Y5 M
" V) _; [ A$ q) P. {- function create(ctx, state, entity) {
5 c9 d. o6 M6 _! t% O - let info = {
) I* q5 r# W4 Z - ctx: ctx,' X2 F/ _& I& n+ ^/ ]/ V' W4 M
- isTrain: false,
( _) [% m! c9 ^6 H - matrices: [mat],
8 Q% s7 x' E8 |0 t1 O8 W - texture: [400, 400],
) y: U6 {. }* J$ a( z - model: {
1 H! u% J8 F t2 D+ q# M9 X5 E - renderType: "light",7 ]1 M3 G) l1 r9 ]6 r' y
- size: [1, 1],# s/ R" P% C0 z" ]2 o+ g
- uvSize: [1, 1]
! l! H; Z: W& _+ w0 A9 h4 X) K - }
+ t1 u! ]3 D* \; ~' B$ } - }- a* Y. ^; [# [. A6 K
- let f = new Face(info);7 }+ ~1 G9 T j) o
- state.f = f;
2 k& d, J" i5 K! ~+ U$ j0 P - 5 ]7 A, O. f Y, m
- let t = f.texture;& q0 s% q0 S" h8 f! ~- i/ ^
- let g = t.graphics;5 J* C+ H3 S$ [; Z0 Q" S* E
- state.running = true;* t+ p/ _# S3 @2 r3 s0 @2 V
- let fps = 24;
. D a6 k; a/ U1 ~. A - da(g);//绘制底图 j% L* O0 s/ M( ^; x* `/ @" ?( \
- t.upload();
! I0 V2 W% v! ?. a3 F$ S8 Z - let k = 0;
; ]* r6 L* S0 m, l( v - let ti = Date.now();3 {8 n3 c3 q) a, G
- let rt = 0;$ |# T; }9 ]+ H, s( j. T; @9 j
- smooth = (k, v) => {// 平滑变化; c& C9 E8 H! K$ [9 ]$ A E
- if (v > k) return k;: O/ I! D: u7 ~ D$ h
- if (k < 0) return 0;
: n3 H; W0 ]: ^4 J' d2 m - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
1 o) | x8 ], L( q - }( E. e- K# B X, V, C
- run = () => {// 新线程
% R$ E: e# E- F2 h n% | - let id = Thread.currentThread().getId();# o" H4 x; O2 ^* Y% a$ F
- print("Thread start:" + id);
% V+ W# T# {; `5 l/ Q) l - while (state.running) {- Y+ N- o6 |' b8 F- I
- try {
7 j5 Z/ E. l8 @ - k += (Date.now() - ti) / 1000 * 0.2;, V' }, e! `. _( j, N3 P" Q- S
- ti = Date.now();) v! [& W/ e& ~9 Z
- if (k > 1.5) {
9 F* b- V# K5 e3 ?' T! Q* { - k = 0;' o! z' n$ l% X# D: d6 X
- }
3 L" B3 d9 x g$ i# J( w/ S* j7 u - setComp(g, 1);3 K, P, f7 q3 ~
- da(g);
1 Y, X ]' B! P7 Z - let kk = smooth(1, k);//平滑切换透明度* z6 E" [" Q7 s" a: L) N& G% O6 p4 W
- setComp(g, kk);
2 Q0 C4 a; n9 {8 h; E5 }7 \6 c - db(g);1 r9 l a! u1 e0 e
- t.upload();' s. E2 [ r# [- f$ n
- ctx.setDebugInfo("rt" ,Date.now() - ti);" s% o5 y# W! n7 ^) A
- ctx.setDebugInfo("k", k);
5 P8 M$ j$ \- S+ p - ctx.setDebugInfo("sm", kk);$ s# O2 k9 V+ u
- rt = Date.now() - ti;
( }+ h4 i0 [# J8 X% h3 _6 q - Thread.sleep(ck(rt - 1000 / fps));9 N; ^/ i# A" _! h
- ctx.setDebugInfo("error", 0)! c% [, m! P8 w9 W. Y \; z
- } catch (e) {
: o3 x# G B. z' r) }0 b - ctx.setDebugInfo("error", e);; X* k' \6 j% y) t
- }/ N+ \6 ~; ], }' ~* M& n* X6 @
- }
! z' x- J) K, H& e9 P" x6 D% w5 N9 D - print("Thread end:" + id);
! O) @3 r9 F7 T& m - }
9 [6 }" B Q1 a; A6 I' R - let th = new Thread(run, "qiehuan");- ^2 b% s2 `3 z7 k2 p
- th.start();9 M2 V9 n5 d5 t) l4 C" @4 ~
- }
4 ?( L, d8 \- \3 R1 _
7 A" ~- Z% x; S* d$ Y) V! ]( u- function render(ctx, state, entity) {. N* b& Z+ \* h$ u& G
- state.f.tick();
9 E7 `, m |, U& @ - }7 o4 G: Y) O1 j& \
) f2 U% V& |' P- function dispose(ctx, state, entity) {
1 l4 }* c! R: a: d - print("Dispose");3 E$ U! l8 H1 C- M( i% S4 W8 \
- state.running = false;
' C4 s0 m& \* S4 V" }/ w+ v: @4 D - state.f.close();
: ^9 c. k9 F7 H - }
6 |1 |2 O! h1 i6 g# ^ - ! {1 {2 m2 H; {
- function setComp(g, value) {
4 s0 X, [0 [, b% f( G2 U - g.setComposite(AlphaComposite.SrcOver.derive(value));% T) T1 S, W, K
- }
复制代码
: l/ x) n1 Y P$ M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。
1 C+ | P3 d+ Q) A
" |9 l# F" v( e9 N; B6 }* b, I$ H
/ O* N! E9 t4 S) K. Q顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)5 G! ]" \8 O) Z4 G0 M
|
|