|
|
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
×
" j- n1 G7 U; j7 B
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。
8 i1 N9 l: [1 H- importPackage (java.lang);' x2 [. l" o( f5 f
- importPackage (java.awt);
; n# D/ P+ N! _6 V" c/ K- \
- l y$ P; {. p$ A* r* Y o2 Z4 P- include(Resources.id("mtrsteamloco:library/code/face.js"));/ Z) }. B7 U, |
- : n, P8 ?9 o, y8 T& X
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
2 k2 [$ E+ A4 r7 _# V - 4 z" F& V8 W. n1 e8 Q# _/ A6 d
- function getW(str, font) {
3 |1 \8 F5 g0 J& h9 _8 G - let frc = Resources.getFontRenderContext();+ K6 A% y) g1 o J8 W" `$ k
- bounds = font.getStringBounds(str, frc);
7 u8 o( _; N1 F+ K6 B& l. R! ^* G: Z - return Math.ceil(bounds.getWidth());3 t/ g! S2 P8 }& w8 p; ]: a
- }
- S& P7 h% ? P. V, v* c3 l# g0 a
2 ]1 A9 `# O) ^4 m. Z9 L( o4 e4 z- da = (g) => {//底图绘制0 j/ O1 W% G, f5 C
- g.setColor(Color.BLACK);
6 p6 v) ?2 n1 ?* R - g.fillRect(0, 0, 400, 400);. _6 p" K1 B M$ }* \0 A
- }
8 u$ A, i4 U7 f6 J2 F2 |" v( V - 5 Y# ~( w8 V) d5 k6 W
- db = (g) => {//上层绘制
- ?/ Y& d) h; [! e$ S - g.setColor(Color.WHITE);
' D: S& x+ N2 i! K8 | - g.fillRect(0, 0, 400, 400);6 h' R M1 B! P/ m
- g.setColor(Color.RED);9 C( x) Q4 e+ p4 A; [* U
- g.setFont(font0);
; K2 \+ I& L; a" r3 H" T - let str = "晴纱是男娘";" _9 s8 h N9 J
- let ww = 400;- c: w( ]/ h# O: r
- let w = getW(str, font0);% y8 t, b. O4 j' Z* y
- g.drawString(str, ww / 2 - w / 2, 200);( X% h5 |" F4 q1 z1 C4 N+ G( h
- }
4 K) t( p2 g0 G8 K
$ [. q' b+ B9 J n& r) c- k1 s& Z5 @& C- const mat = new Matrices();
$ ^* r" R" O9 [' s g [ - mat.translate(0, 0.5, 0); P$ }# y* L3 n5 [# g/ A
- ) R& m, K& z3 G6 g
- function create(ctx, state, entity) {. N/ l" Z/ k/ b0 D7 v% ~
- let info = {+ f4 F* ?' V# L6 n- b4 k
- ctx: ctx,5 c/ s- i( L K& f) [) m2 w
- isTrain: false,; e2 c" b$ H8 f
- matrices: [mat],2 N! K( X Y Y, h
- texture: [400, 400],
6 \9 _+ U7 @9 _( w( o - model: {( {- Q3 y# D% S( ^7 B3 P$ C
- renderType: "light",. n- ~- X9 K- t5 P: F
- size: [1, 1],. O0 e1 f! t. N
- uvSize: [1, 1]
) M- G% J; t. B9 b: I - }) I# o7 E# V: Q
- }
P2 I$ F) S1 ^% b/ e - let f = new Face(info);
6 `8 m4 j! D) \4 t0 N" ~8 U - state.f = f;$ |4 X/ G# i* U( O4 L, W4 w
- * b2 r3 x3 F# W( u9 ~9 Z
- let t = f.texture;
$ L$ O7 G) l/ s; w/ [! K9 P: S - let g = t.graphics;' |, \# d) V8 [2 `! H: h
- state.running = true;
* k5 T5 P! t. ^7 ?5 w" ?7 U - let fps = 24;
8 Z2 n6 K1 G- t0 @1 q - da(g);//绘制底图
5 L C, C$ ` i0 X& F/ P - t.upload();
5 s1 {( F3 s6 t$ ^: D8 V' n. K w - let k = 0;, K# \$ s# T$ h1 f3 u
- let ti = Date.now();
. O/ j. p- f6 K9 d - let rt = 0;
q' O9 H3 s1 @& {* u - smooth = (k, v) => {// 平滑变化$ b" ?5 r; W Z! I
- if (v > k) return k;
9 s0 P; y' o8 k8 A! \/ o) F9 W2 o - if (k < 0) return 0;* B ~) R# E2 ~! L
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k; \# y" }% G( m+ L3 L
- }7 |, M, K: `" t) F' J3 D
- run = () => {// 新线程" S7 j; d" D8 J& i. F. e2 d1 w' _
- let id = Thread.currentThread().getId();4 J4 C* x8 r. ^6 L$ O9 L9 ~% w
- print("Thread start:" + id);
7 S1 F) x$ Z' Q4 a/ w5 n - while (state.running) {
8 Z7 \# j9 \/ K/ ~9 |5 e - try {' B) P9 ?% z) h0 a% b
- k += (Date.now() - ti) / 1000 * 0.2;; K. {) G+ |2 d- g6 b! J5 I
- ti = Date.now();
4 o' K+ q% Q1 @% m* z - if (k > 1.5) {
: U% F6 j! M3 L- H. X. ` - k = 0;
" p1 s/ I$ L/ H2 |. Z6 K! H" O8 R - }8 t' q9 t6 u- q; ?
- setComp(g, 1);3 C7 b, W& w! d B2 t$ ]
- da(g);
# C9 v; E; y% k+ s - let kk = smooth(1, k);//平滑切换透明度
- I) ~0 Z* r ~ F( a - setComp(g, kk);
4 b, U- V2 }6 K, k: Q6 p2 T - db(g);6 t2 {8 p8 H P
- t.upload();
( u) q/ f8 E1 b9 v! r - ctx.setDebugInfo("rt" ,Date.now() - ti);
) U% y8 n! f& a - ctx.setDebugInfo("k", k);6 @$ R- _6 s9 I F; k' a& w6 d t; H/ s
- ctx.setDebugInfo("sm", kk);* \: A8 q* R: i5 B# V
- rt = Date.now() - ti;
1 a+ H4 b6 X& J; i& A - Thread.sleep(ck(rt - 1000 / fps));
9 X1 A- v, i. k9 y- P5 m - ctx.setDebugInfo("error", 0)
7 d6 F! H3 O- ?& c# m( F - } catch (e) {% i4 f* J/ @- I0 j' g1 b& |
- ctx.setDebugInfo("error", e);
' h0 ^" y% W1 ~2 v( ?% { - }
; e' R6 X" I$ Z8 C; m" E7 j - } o; ~ q" v7 c: x
- print("Thread end:" + id);
2 l4 l$ T5 C, O7 s - }
; P s% I9 o; h/ m) K# a - let th = new Thread(run, "qiehuan");2 R( V" _. E6 y* ^
- th.start();
6 e: ?- ]: N1 @- H) y1 c8 k - }
! P3 M4 }' u$ K/ s: j8 V: ^4 F
5 ]$ d6 \' W1 b- function render(ctx, state, entity) {
" Q! A# c5 m# A# U0 T - state.f.tick();0 x6 G0 r5 K$ T0 b6 W: M; a
- }
1 M/ y9 W- w* M7 ?* E - 2 n( z& L% n% l2 P5 _4 a
- function dispose(ctx, state, entity) {/ b, ?9 D# O/ c% I* U/ y& a
- print("Dispose");; G2 u% z8 i- d# `
- state.running = false;
" _- P3 p) R6 G% g# z" \9 P. R - state.f.close();7 E2 }. b* C" U. H. X4 V
- }
1 S; x7 m+ i/ w4 k- H, u4 [: G- t" l - & a2 F3 r+ M: [9 f; L
- function setComp(g, value) {
4 Y5 C% ~# T; X( q: d, U1 n! U - g.setComposite(AlphaComposite.SrcOver.derive(value));
7 }; {8 S2 t+ [' q5 O a* G9 f - }
复制代码
# O$ Q k( n. U) c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。
) M- L% c* I+ P+ h( I- j
. y% z1 u+ v+ M; ]# f, E
* \* r& x G$ j N5 w! C顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
9 X- m/ X, E& J, ? T9 \ |
|