|
|
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
×
& _7 d0 M' T3 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。
/ `1 r( ]6 I1 V& w: N- importPackage (java.lang);
" ~" c3 l5 {' ~ - importPackage (java.awt);) H! K2 P; A0 @2 w- y4 I( j8 M
' Z* S- M8 q8 o) P! j8 K3 O- include(Resources.id("mtrsteamloco:library/code/face.js"));
6 D; J! P# G. R4 s0 I5 [5 ^/ K7 A - # S0 R3 t7 r' [# M6 o! _
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);& J0 l$ M" L8 F' V1 j `2 k
! l- m) P* f5 Z4 _; M, p- function getW(str, font) {7 i# h$ Y; g9 J: @, C# X
- let frc = Resources.getFontRenderContext();6 d9 B. t+ i# Q' W' z% w- X
- bounds = font.getStringBounds(str, frc);% V, y0 S0 q5 j8 H
- return Math.ceil(bounds.getWidth());
( Z! \% \* U C' Y) z. Q( F# w) A - }
5 o \8 \1 z1 n+ k( X - % _% x9 q0 n {2 }. V' c6 O7 p
- da = (g) => {//底图绘制! u ]6 a. E4 B7 e
- g.setColor(Color.BLACK);9 S- f. e6 b9 Z
- g.fillRect(0, 0, 400, 400);
; K: Y4 M: W3 |% B4 K - }* ~1 I4 y4 v) n
+ J1 N' z) L# G; a' y- db = (g) => {//上层绘制
9 F$ |8 W3 n. {" n$ W# H, e8 Z - g.setColor(Color.WHITE);1 H$ m/ ?# S# p4 u
- g.fillRect(0, 0, 400, 400);5 y$ T! W T' O% b l
- g.setColor(Color.RED);- r l/ g( w. k( O3 M
- g.setFont(font0);: L( V- B2 \1 m! z' t
- let str = "晴纱是男娘";
, B$ A! o% y' N6 B% K& l9 i - let ww = 400;6 f9 f4 O R. o% `( c Z) [
- let w = getW(str, font0);
+ x$ r. J3 O4 v* U a - g.drawString(str, ww / 2 - w / 2, 200);9 Q) n* ?/ Z Y U0 H: e
- }
$ V7 o% B0 C1 [5 |6 O: I
+ E# D' R5 u/ T9 X R9 [$ \- const mat = new Matrices();
( ^4 x% K8 H* |, u8 S/ l7 p" ^5 o& y6 l - mat.translate(0, 0.5, 0);7 q5 C9 n- O: C; I3 \% D
& h+ q; ?6 E# k7 l! _! w2 M- function create(ctx, state, entity) {
$ i4 W- X) w* S! D% _* M - let info = {2 \% j, s( u7 z! R+ C, g
- ctx: ctx,
* S- Y" ^, g* i9 n; {# Z - isTrain: false, T: C6 a9 T% H& K8 Q
- matrices: [mat],* b1 r0 h, s" I) s% o% H% |0 U6 t
- texture: [400, 400],
* `1 J/ F" T, ]9 w$ k - model: { E9 ]5 {; A6 f( p5 Z6 ~
- renderType: "light",4 n- G. x9 ^; C! e" E+ _& i Z6 X- V
- size: [1, 1],* b2 T; q/ Q2 U1 f, [9 Q3 t
- uvSize: [1, 1]
2 h$ L3 y* Q5 o9 A1 G - }
$ _0 o" @" S# I+ s4 r - }4 M. }; K/ w$ e
- let f = new Face(info);; @: k) V" k- E, p3 w' k. F8 ~# w
- state.f = f;
+ x% @% _ G$ a+ T/ x! I - : @' B7 i5 u& u P, V! N F( W& O
- let t = f.texture;9 z) ~ W1 l0 N, H2 E7 n0 [/ {
- let g = t.graphics;7 u! r, R* n( }7 o$ [* v) i2 A
- state.running = true;) q9 F- e# i6 Y$ e5 W6 I; z4 I: x$ Q6 M1 X
- let fps = 24;0 I7 g, T& }4 P, A7 w
- da(g);//绘制底图& g( n# ^$ C0 @! `& W. n7 @3 u
- t.upload();% M( D/ ~! e# {. l, n" \" B
- let k = 0;
2 r( `* ~0 {" q" x+ n/ s4 v - let ti = Date.now();
! i7 m: ?: g4 x - let rt = 0;3 k. S: b+ o" x4 C8 h9 S2 @
- smooth = (k, v) => {// 平滑变化# N4 j g) g7 Z- L- v
- if (v > k) return k;
) S9 }4 Z7 G; ^, C6 Q/ r# F2 f - if (k < 0) return 0;
# |% D$ z7 C$ B) Q& j2 a K/ w - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
" M% H7 s* D- q( L x - }
) t% H8 t7 ~& M# c, {) r - run = () => {// 新线程
& @% o6 {* D3 ~. y- L - let id = Thread.currentThread().getId();
0 p1 F8 L" J5 @5 f" ~# g& J6 S0 J/ @ - print("Thread start:" + id);
8 V% r, D3 g7 Q, t! E7 X! A - while (state.running) {
# Y4 }; a* P0 x - try {/ [0 E2 _+ U0 Q: r2 A
- k += (Date.now() - ti) / 1000 * 0.2;
# u( J3 G% A* T' w' V - ti = Date.now();
5 Q' g1 W" W t' t4 y9 _; ` - if (k > 1.5) {
; E8 h0 N9 G4 b8 e, F) A& i0 q6 o: } - k = 0;
: S' |/ ?) O2 V( n. W' R7 |0 c4 x6 a - }' Z8 I+ a$ K5 y
- setComp(g, 1);9 D7 R* d% }8 {/ _
- da(g);
5 j" d9 V$ I4 N9 r" G0 d! h - let kk = smooth(1, k);//平滑切换透明度
" ^7 A6 r X% a6 L" Q - setComp(g, kk);' {. w; b2 M% g. X2 r* y0 ^" B) U5 \
- db(g);
4 J" E9 F: e* y& l; r - t.upload();
y$ n b) e1 }! k0 ^ - ctx.setDebugInfo("rt" ,Date.now() - ti);
4 |, Q* p5 }( q+ H3 x2 S x1 V8 s& D - ctx.setDebugInfo("k", k);% D! v# q+ ^$ J8 @8 K
- ctx.setDebugInfo("sm", kk);
5 E E) H4 g1 c% S* d3 Y- l1 J - rt = Date.now() - ti;5 I; D. ^ S1 f9 {( z) l) R
- Thread.sleep(ck(rt - 1000 / fps));" @7 a; ?; R8 D/ H& ]" g
- ctx.setDebugInfo("error", 0)
8 U2 R; y ~+ m( _ - } catch (e) {
+ J' f+ F) d! m9 q5 O$ T0 [3 O! z$ Q - ctx.setDebugInfo("error", e);
$ s( T( m: }* K, @+ b4 q - }2 d! [* S6 J" {0 |4 [
- }5 A/ g' V; }4 w/ }0 p
- print("Thread end:" + id);
0 F) ]! C& j: `; M4 h# y - }8 G1 g7 w) \' B& e1 z
- let th = new Thread(run, "qiehuan");
4 B: B/ U6 E2 b/ d - th.start();
7 |3 `' R% i/ O2 O% w: a1 x9 y - }
4 a: A3 M/ t0 c; I - 8 f$ H9 O9 j2 Q" J" J$ [
- function render(ctx, state, entity) {5 g Z# y+ ?9 D# L1 D
- state.f.tick();4 I* Z, U9 s6 X$ t
- }0 H$ ` J3 F* z: A
8 ?% P. G8 P; c% j0 ?" K; j- function dispose(ctx, state, entity) {
! p5 ^9 G1 y( m- ~" X& ^ - print("Dispose");
2 {8 b& S3 v, E% D& ] - state.running = false;
: {2 Z, A+ \% i - state.f.close();, t( l% Y d) |( z
- }
$ r% H- C9 g1 y( L* c/ I% V% b
1 [- W5 C: N9 ~$ R4 L( d- function setComp(g, value) {* K6 H- t1 p7 R% n* C3 V( p! ]# Y% q) Q" ~
- g.setComposite(AlphaComposite.SrcOver.derive(value));
/ ?7 D* J& h) V! _9 W2 N2 y8 { - }
复制代码
2 [1 S6 i8 F# o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。
( B9 p6 E: g2 s+ p, X& r3 ]& z
& Q" W3 |" k& G, p% w& b( J- P% P! m4 L( |5 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)) s8 N) h6 W6 R
|
|