|
|
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
×
$ V) y7 n# B3 N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。
. T; r+ a' ~0 u6 q6 n- importPackage (java.lang);+ U2 R, `) d/ Z
- importPackage (java.awt);* T7 v+ }' Z' J* x
. E1 h0 t5 ? T( z9 C% R; L- include(Resources.id("mtrsteamloco:library/code/face.js"));- Z) u/ t2 r+ \+ F% \4 T- J% {) a
, A' M% Z3 T# K- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
. n* Y9 ]& Y u! k - , u6 o/ l* P! Q8 G2 r' H) q2 v
- function getW(str, font) {
# O, P6 n d" U- `2 j% Z - let frc = Resources.getFontRenderContext();3 A, J# r! t3 a o0 I4 b
- bounds = font.getStringBounds(str, frc);' Y; i4 V e# |" Z' o
- return Math.ceil(bounds.getWidth());+ u$ F1 z) Q3 X( ~8 Y) D/ w: S
- }. h! ^: _) {6 h* i# h/ H
! ~; A* C! O% m0 Q6 J0 I8 m- da = (g) => {//底图绘制
& ]/ c/ [, ^/ |3 D - g.setColor(Color.BLACK);
- Q/ U0 {9 w x8 P, l! V4 v - g.fillRect(0, 0, 400, 400);$ G. B, w% Q! I
- }
. ]# L) ]( U7 b2 H3 Y' ?. q4 `9 r- ] - 8 z) y! v; J" _$ U
- db = (g) => {//上层绘制
$ i3 T: f8 U& d/ [' j2 S - g.setColor(Color.WHITE);
8 q7 S9 h5 s1 I - g.fillRect(0, 0, 400, 400);8 ?6 c# h9 X+ d7 J
- g.setColor(Color.RED);
5 _7 Y. k* _; l - g.setFont(font0);" j7 \/ Z2 V L& j/ f; \* G
- let str = "晴纱是男娘";# o5 C6 o8 { D$ @+ r
- let ww = 400;
8 G9 T( k/ T+ k4 h2 {; Z - let w = getW(str, font0);
) ~6 S# z X' X( | i# R - g.drawString(str, ww / 2 - w / 2, 200);
0 U! a* K( E& T, ]: ~6 U/ {2 M3 i - }
, N) b: {7 a' _6 @, u# T2 v* m7 e - - y7 [& x; U# Q) z
- const mat = new Matrices();- v! e* e6 W! P( z9 _6 e2 u& j, Y3 S
- mat.translate(0, 0.5, 0);' O* C5 C: j; M, S ~2 }5 t
- $ r% o0 u- V) n+ O
- function create(ctx, state, entity) {
- s0 g0 S7 n3 `# O6 z - let info = { _% T9 U! B9 x3 q
- ctx: ctx,1 G2 Y% U& T/ L4 M( M& F, ^- a/ X' }2 q
- isTrain: false,7 {6 J& j1 a( z' A- ]
- matrices: [mat],6 { W9 p! l# Z& J
- texture: [400, 400],$ l& G7 E" A& ~7 s( x& y) _( W
- model: {
R+ x! O0 C; O! D - renderType: "light",
p+ V' t8 Y0 ^: l; a& r9 [ - size: [1, 1],7 M8 l4 o9 J+ b$ G: h0 X9 P- a
- uvSize: [1, 1]
( ?0 \) A- ?9 @" C! y; c3 V - }* Q8 F# ^+ j1 E' [6 \
- }
1 I: v' }! ~; a$ a - let f = new Face(info);
3 Q% D) Y3 c! N# F6 m. q- l4 T - state.f = f;1 y, f+ n' D8 I( I* E: E9 q2 a
- $ T$ t% w+ b( E( i' e5 f7 D
- let t = f.texture;% ^' w5 ^+ w5 }& `' w
- let g = t.graphics;
9 r7 S) t* l k6 e( l8 I3 R - state.running = true;
/ P0 q9 c" Q) h - let fps = 24;$ C, `: v5 Q9 N3 e. O& D3 A7 _9 C
- da(g);//绘制底图
6 N- H" F. L* w! M3 v - t.upload();
$ B6 M& i K% L - let k = 0;
# o/ |2 s' m* \! c7 I5 k l, H! e - let ti = Date.now();/ u- ^( _! R5 j; P. e `2 p- Z
- let rt = 0;' K) s1 s% k3 c7 p
- smooth = (k, v) => {// 平滑变化
, D3 ?" j% U% S4 ]1 K" D) K - if (v > k) return k;
W3 X2 X5 R' k2 H3 v; R - if (k < 0) return 0;- s+ p2 i6 P6 s2 k
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
* `- P8 u: v ?. A4 w& y5 m* z% X - }
$ ~$ g- v, [( Z7 G* I/ a2 C" Y - run = () => {// 新线程# ]$ U* d8 Q( ]5 A" |: |9 w
- let id = Thread.currentThread().getId();
! ^4 q3 g3 }! l - print("Thread start:" + id);
7 \' {8 W) _, [* s - while (state.running) {
5 n! Q! L; G' f - try {/ V* U) E* k/ N5 x
- k += (Date.now() - ti) / 1000 * 0.2;
0 D! w, @% |9 D2 }; B" C - ti = Date.now();
7 A: s% j# I( n! V4 ] - if (k > 1.5) {9 L! D6 g% o6 B$ ?# I3 P4 ~
- k = 0;
3 u; o- p3 C# o5 k9 E - }5 e1 [7 c1 G; b: i. |$ D6 Z
- setComp(g, 1);
3 I6 H4 h4 F7 r3 I/ u' W - da(g);
" g* t1 W4 _7 Z' ?* G - let kk = smooth(1, k);//平滑切换透明度
3 [$ _: h' t: F! N& k - setComp(g, kk);
" V. w! C5 N Y9 ~+ a7 J - db(g);0 f/ A- a, }+ p* D+ e' U9 _
- t.upload();7 t( t0 c' { b. H( g# i# p
- ctx.setDebugInfo("rt" ,Date.now() - ti);
+ `, @5 B* h( @ h& [0 | - ctx.setDebugInfo("k", k);' P! @ g2 S- w0 o
- ctx.setDebugInfo("sm", kk);' k* T* [* Q' {! D
- rt = Date.now() - ti;
9 u! X* G e- e W - Thread.sleep(ck(rt - 1000 / fps));( q$ M/ G9 k2 v, N+ S6 {, o# \
- ctx.setDebugInfo("error", 0)
, S' n3 F& H, c - } catch (e) {- W3 h7 N' L+ N% A0 H/ [; Q
- ctx.setDebugInfo("error", e);# B2 k A% v0 q3 r) c
- }
( T4 @; V0 z8 j& C) V - }
9 j: {/ u) b: ] - print("Thread end:" + id);3 }0 o$ f3 |$ C* L3 l( R/ H5 K
- }2 K6 b/ Y0 r* x
- let th = new Thread(run, "qiehuan");( O6 `) P! e. k( ]' R. L' W
- th.start();
) `% N; A/ N/ N4 I - }% _, c j, z5 G% W+ f* i
1 J) j4 e4 b5 y3 F- ^- function render(ctx, state, entity) {
' h+ J" J' N9 E$ [9 g9 J - state.f.tick();
5 K1 k( C( c" P" N, y* y - }( W6 ?5 j8 j0 M2 @4 S
- 0 _4 a3 a- v1 j; \: t( @
- function dispose(ctx, state, entity) {
1 s, T* p: ~" N& u& i D - print("Dispose");
# s0 B: f) Z, s9 q+ c# _, i - state.running = false;
& P: i% L- w' r - state.f.close();8 g- a2 y V1 ?1 |
- }
4 r' t! S2 k. l# ]7 j - 2 E, I8 \9 }* s( ~4 B3 R7 H9 A
- function setComp(g, value) {
/ {- `3 X; ?$ u: w+ N) c - g.setComposite(AlphaComposite.SrcOver.derive(value));
/ T% @& x/ u0 O6 N* d! ] - }
复制代码
7 T$ ]9 F7 A/ s/ f3 G* C4 Y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。5 \6 `6 ]. J2 L) v
' k2 E* e8 L( t J1 ~7 [: J2 j6 l3 ~8 U" V" _
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
" \3 h% u0 K; b2 E. a2 [" t- R |
|