|
|
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
×
8 ]6 A( x2 t* C- a
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。, Y5 w d0 e$ L- }% f
- importPackage (java.lang);
( `+ H/ q, |, E - importPackage (java.awt);
: D8 H* A9 ` d" i% _ z/ Z. d
' Y: Z# i/ }1 u' X5 P- x- r- include(Resources.id("mtrsteamloco:library/code/face.js"));9 T4 ]$ [5 ^+ {) a
- 6 t* p* }0 v/ k3 ]( L7 D3 [
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
# o; ^; v" d3 r, u
7 U& l* A7 D/ w1 S- @1 h- function getW(str, font) {
# ]" W0 U; H* E$ b7 U2 N& ] - let frc = Resources.getFontRenderContext();9 B9 f9 b: Q3 v, `. \
- bounds = font.getStringBounds(str, frc);0 _) D$ {& k- w" }
- return Math.ceil(bounds.getWidth());. I$ r- r) z& g, ^& _4 n E& n
- }
# z7 P* l! Z0 `5 n - 4 x. r& z# H2 O% x, W" q% f R
- da = (g) => {//底图绘制
& }' l) O+ U9 b/ H; z* e% ~. O - g.setColor(Color.BLACK);
( k5 Q* o9 l( O0 ]/ d+ O - g.fillRect(0, 0, 400, 400);
/ O$ G5 _$ z6 O) G- {# ?+ c - }6 F. T) ], o" t* e) L i! K' {
- 9 Q) N* ]. {* k) G
- db = (g) => {//上层绘制8 ^- W+ M; K7 N; V, K5 U/ m
- g.setColor(Color.WHITE);
: r; V$ h" P/ P - g.fillRect(0, 0, 400, 400);
2 }. _6 }8 p/ a- V - g.setColor(Color.RED); L" S4 i5 I; A9 t
- g.setFont(font0);
9 Q; l& j7 a4 J8 A8 G - let str = "晴纱是男娘";
2 O' [& A" ~. \; L( I p - let ww = 400;* b$ z3 \, {# }0 d+ F
- let w = getW(str, font0);1 Z5 {1 {2 F$ E9 C' s
- g.drawString(str, ww / 2 - w / 2, 200);
: G" M' [: y8 V7 Y' o - }
1 g% c, o2 u. w9 e4 R - ' w9 \ ^1 y1 q$ D/ ^' B7 l/ @
- const mat = new Matrices();
, f) X; x! Y3 f( c - mat.translate(0, 0.5, 0);
* L4 C/ [ v" K: b6 o! e* v* V - 4 m8 O# k7 L8 J
- function create(ctx, state, entity) {
5 N( F0 g' N) u5 b8 D j6 R" {, b - let info = {* ~7 F* Y1 `9 ~ t$ ~
- ctx: ctx,( Y/ \9 s1 `1 ]$ h0 P6 D5 B
- isTrain: false,
" c, \0 N' p8 E: K4 }. l8 G0 d - matrices: [mat],
2 s- S! d( Z% I0 |5 ~2 ` - texture: [400, 400],& u6 K. g" o: v4 w8 ~- d
- model: {- }" n2 Y$ k* M
- renderType: "light",* c/ `, m9 q, x6 s2 o( f$ ^
- size: [1, 1],! \ z c* l9 ?7 b6 ]% f
- uvSize: [1, 1]
) P; `2 w# M+ U+ l - }0 |' p: i; p2 z' k/ [
- }, g' F. {) P' G. @' f) s
- let f = new Face(info);. c4 A$ ?& C. m! ]
- state.f = f;, _4 W$ J0 S4 w3 Z! a, a
. s: @" k3 z# V- ^4 @0 t" O* Z- let t = f.texture;
2 q3 a( A3 t- R: f - let g = t.graphics;5 Q0 [5 {/ a6 n4 \' O8 v- _
- state.running = true;7 [& Z- m- B* S/ i$ V3 a
- let fps = 24;
4 k3 X ~5 |, P0 ^ - da(g);//绘制底图8 Y% F$ E& l" v7 _# E+ p
- t.upload();
9 j6 H' t" |6 B* ^6 o: C6 [) Q - let k = 0;9 x: d; R6 B3 c1 _5 u4 x+ E
- let ti = Date.now();1 P- D: E, H2 h
- let rt = 0;! p9 F) c. q9 B* i
- smooth = (k, v) => {// 平滑变化" n7 n2 ]7 D& B: d. o
- if (v > k) return k;
1 i/ A- I9 z6 U! y& | - if (k < 0) return 0;
' v2 }) S! I2 q9 V - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;4 w$ p, ]* U! J; ?( `2 C8 i
- }
4 S7 J, Z* O. k4 k' _' A9 F; } - run = () => {// 新线程
; ?. C+ E- H- k1 \7 w0 g - let id = Thread.currentThread().getId();
; u j' ]( S5 z% I% l - print("Thread start:" + id);" E. E, y2 X5 u c
- while (state.running) {/ n5 s* \9 Y7 Y
- try {0 y0 x b2 O( [ M, _7 x
- k += (Date.now() - ti) / 1000 * 0.2;
! v7 ~$ V$ S) ~6 _ - ti = Date.now();
; O4 c% y7 N3 E# d$ H! {+ m - if (k > 1.5) {
/ V! @7 f# D3 `. Z0 W1 q - k = 0;
+ `0 J; m% V4 `1 T& F: w3 }& S# n - }
1 H7 Q% L% \" y* C& ^ - setComp(g, 1);" K% h+ a. Y8 v* M" C
- da(g);1 s, f3 \# @( N1 e8 U
- let kk = smooth(1, k);//平滑切换透明度
! C" m: K$ J3 C; u0 | - setComp(g, kk);
4 h7 @- g9 j5 \; y* D9 G" g8 B - db(g);+ _9 \# C' O v, s2 @! I2 J
- t.upload();
+ U* W2 m @3 o - ctx.setDebugInfo("rt" ,Date.now() - ti);+ J7 z3 h* C7 a1 c/ n7 v5 ]
- ctx.setDebugInfo("k", k);! J8 m8 h4 l4 y2 F* N6 p
- ctx.setDebugInfo("sm", kk);( O# Y! @6 c7 G3 v% T
- rt = Date.now() - ti;9 {( m- o. w! h8 y
- Thread.sleep(ck(rt - 1000 / fps));3 j0 B9 b3 P5 X! V
- ctx.setDebugInfo("error", 0)
1 I% |& b- G3 h - } catch (e) {
6 Q. b! l+ n2 [9 `& e: q - ctx.setDebugInfo("error", e);
6 b/ e# k; d1 W5 m! H - }$ h, _+ k, N3 }7 Z% }- K2 S! ^- q
- }; G/ K6 u0 s' y l W
- print("Thread end:" + id);
) U% I1 E7 @* j' j% H, M - }* N+ B+ c; D' z# Y4 D$ R8 u$ r2 r
- let th = new Thread(run, "qiehuan");$ O0 s1 q# E: m% ^' k5 ?8 \3 v: J
- th.start();
( _1 B% j# n% n ? - }
6 n) J9 ~- R# E! B4 B1 ]( W - 1 Z: ^0 m8 Q" @: U9 q0 T
- function render(ctx, state, entity) {
5 v( \3 n8 t. B. p - state.f.tick();
4 ?* v# V I% d: T5 J" d - }% k3 u! T0 A% ]* D2 @
- 8 Y2 K/ B% Q; M& h5 k
- function dispose(ctx, state, entity) {
) R7 Y# U0 I. g; d! _# m - print("Dispose");
! K! ]+ l5 i, u) y4 l - state.running = false;
7 D0 n& U5 `3 u' F - state.f.close();' ^ A0 }. ~% }
- }
+ z3 J# x6 p" V& [" t1 G - 4 n, ^, t$ b$ ?1 _4 y
- function setComp(g, value) {$ g) g0 w. w0 h
- g.setComposite(AlphaComposite.SrcOver.derive(value));
5 N9 v8 F% w; v - }
复制代码 6 _7 H6 I2 Y4 N5 J, _
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。
/ F ?- M; a5 [8 I" h. X% i/ a/ @% b; K. k3 A0 Y! L# C* T, `
, S! C' T- i+ V. I! X1 `
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
1 R% D2 Y2 N3 J5 D) a+ l1 @2 m |
|