|
|
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
×
; p$ J/ q( h9 P: v, \3 }$ ~0 d* V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 {; T: ?" t( p- `9 i4 z9 t- importPackage (java.lang);
# f. d) J" s1 H) ^3 a5 ^ - importPackage (java.awt);4 d! M- c* D% G% ^+ u
( T4 W8 w4 x" d9 {/ \) {- include(Resources.id("mtrsteamloco:library/code/face.js"));
; t1 Z6 E v/ y5 F7 M. d2 L
; {8 m3 V0 c. M% }- Q, k- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);2 f2 p& P) n8 y* m# ~. K6 s- C2 `/ \5 H
$ B3 r! @% d; o- function getW(str, font) {2 W( B3 L5 r) s' d0 g b
- let frc = Resources.getFontRenderContext();. @% B& h. h( W( x$ _' C
- bounds = font.getStringBounds(str, frc);
1 [" J* ?8 ?: E( a9 z9 o' i - return Math.ceil(bounds.getWidth());
9 [5 s0 f c9 ^: a. M - }: ~. D2 v) v2 X* ?$ P
/ j6 j0 A( L, `6 s- da = (g) => {//底图绘制
- b% w& m& _( e+ ?/ k! ?/ Z - g.setColor(Color.BLACK);
% [+ T1 p# ~8 R - g.fillRect(0, 0, 400, 400);
, x ?9 C2 H. |; u9 G' v: w - }6 i/ {; X, ]+ N5 A( F$ P3 i& U
' U2 R6 A& W' c% E0 G' b4 _5 r) Z- db = (g) => {//上层绘制# F, M( M9 i9 k, n5 r
- g.setColor(Color.WHITE); P. x b( w- U3 X& T3 J' R/ K
- g.fillRect(0, 0, 400, 400);! Q n, l# |2 ~: ~5 A* p
- g.setColor(Color.RED);
+ y9 g) O, W: [: L0 P# l% j$ E - g.setFont(font0);
P, p2 B; [' k9 X" J$ [; T0 n* F G - let str = "晴纱是男娘";* L3 Z6 ^2 F& I) l; x
- let ww = 400;
. k$ x. [% N& @; m0 H- C9 c A; k - let w = getW(str, font0);- j" ~5 j8 J: e8 H( ^/ S
- g.drawString(str, ww / 2 - w / 2, 200);3 }/ @* G: X) O9 d( {; S) s$ O3 j
- }4 D& Z9 e, }7 N& a" X' W: J
- 0 k7 N/ k" b6 ~. F: D) Y* @# I
- const mat = new Matrices();
! R' ?+ _9 d# L* T- H - mat.translate(0, 0.5, 0);6 j; i: @) z" y% w; g, q! ]$ G
- 5 m1 I2 Q' d7 m* t" Y1 a9 ~: i
- function create(ctx, state, entity) {4 V0 p, \$ O- o7 `- w. L- b
- let info = {
) H- z2 @) ~5 E D - ctx: ctx,) r. \. L! c3 o. a5 a* j
- isTrain: false,/ P, |6 j& l$ ~
- matrices: [mat],& d$ S. N D; k- T( [, i4 _
- texture: [400, 400],
$ a* [1 ^7 y. b" G% U - model: { ?) ]% O- I9 _) z& k
- renderType: "light",
8 k) }: ^: J J$ z - size: [1, 1],
3 s# G. M9 `, l - uvSize: [1, 1]
: h/ Q1 U2 P, c5 F$ G. {# r - }2 a( K2 A6 R, X7 o( |, v
- }
/ x- F9 B& `8 T - let f = new Face(info);
8 R8 m1 R) r b! F' c/ ? - state.f = f;/ X* Y c9 ] c7 d# ^! e
- ; A( E- I7 X8 [' a
- let t = f.texture;6 j( o/ W! l# i, L9 N' c$ p
- let g = t.graphics;
( U4 t( ?; [0 e - state.running = true;
/ h4 ?* g4 T( V2 { - let fps = 24;
/ d2 f$ e! A* {; J - da(g);//绘制底图9 _. Q9 @1 r, s
- t.upload();
0 l7 F. E+ a6 n( o- @7 l/ P - let k = 0;1 ?! i" j6 {% ^4 R0 F
- let ti = Date.now();* F) w& l" l, J$ p: Y J
- let rt = 0;' n3 @ y; A; z
- smooth = (k, v) => {// 平滑变化& u9 }. s. W5 l
- if (v > k) return k;
- h/ }2 b2 I; V. j - if (k < 0) return 0;
$ ]* @! @4 Q- Z: ]- H `: f, O) j5 H% C$ F - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
* v3 X% q/ O3 [$ }4 ~ - }
( h2 ]) b6 g' }$ [3 A9 ? - run = () => {// 新线程
# m* ?, q) x, } - let id = Thread.currentThread().getId();
9 o. Y! b9 } G& L/ p$ V6 I1 E i7 M. V - print("Thread start:" + id);: g ]. l; M+ p, _: n8 u
- while (state.running) {
) S P1 X) m! l( ?4 |4 M - try {
( b- S; D. [1 W# y# ]4 c: q - k += (Date.now() - ti) / 1000 * 0.2;
- l7 [0 z% r+ R+ H% p& P - ti = Date.now();
$ w/ Q$ ^2 |5 | - if (k > 1.5) {
0 O' c( v' G* { - k = 0;
6 o$ y0 a( U# H9 Q" A( F - }
. T: _" F. I5 q, O' f4 _ - setComp(g, 1);
, O& s* ?5 ~1 a/ X3 | - da(g);
0 i# m7 _0 D( { - let kk = smooth(1, k);//平滑切换透明度
4 r9 G' ?5 O6 B/ E! h9 `7 k - setComp(g, kk);
( b& S% V; i6 Z/ `" S, j q - db(g);
6 L# C2 Q, P* D D* x( F. N - t.upload();, [. H8 n) f Q$ ]
- ctx.setDebugInfo("rt" ,Date.now() - ti);
! F% W6 B0 W2 h9 K+ T4 G - ctx.setDebugInfo("k", k);" l5 o4 a8 a- m: l+ j
- ctx.setDebugInfo("sm", kk);
5 k$ U) L; H; } - rt = Date.now() - ti;
% k7 u1 I# R k3 d# I6 o% d6 C% R4 R8 J - Thread.sleep(ck(rt - 1000 / fps));
* l% u6 E/ P% v [9 u - ctx.setDebugInfo("error", 0), P3 f7 c. W0 q$ J" ^
- } catch (e) {
- c% ^& ^& A- T- R; b2 E - ctx.setDebugInfo("error", e);' N1 Y! t5 w& G& ]
- }2 w6 \ N0 E# R( d1 h: v8 S
- }
/ W: a* k" ^7 B7 c# T* O: F - print("Thread end:" + id);
7 H: t! P6 U6 m1 t/ o$ p! ] - }
% L# V' B: q6 M* G& ?9 ^$ r - let th = new Thread(run, "qiehuan");
3 v. P$ H) d- \ - th.start();
) m- [- F! c; y& s* M2 w4 p - }) g3 T( i: {: X4 u# m9 c5 P/ X, m7 ~+ J
/ c+ @( y9 _ v- function render(ctx, state, entity) {
: d D( p7 ?1 O, n1 Z1 e - state.f.tick();
( v! X+ e) ~4 p7 t. g: u0 k6 {# v - }
5 q+ \( A# f+ V' x4 _' y
& f8 d# P/ A0 f' w) O- function dispose(ctx, state, entity) {& O3 r) k' z5 @ S; [9 Q5 w8 {
- print("Dispose");
2 h( C \' w9 p! ^! E2 D. b3 @ - state.running = false;/ [. O% J. `# {* a& v
- state.f.close();2 Q- `) E9 ~+ O f7 }
- }
/ K) o. `9 Y1 H" C0 Y: B3 q. n - 4 D# @, E8 q' i: n7 h" M% z
- function setComp(g, value) {# A) G! S; ^) }5 G
- g.setComposite(AlphaComposite.SrcOver.derive(value));& Y8 a' m1 l3 P
- }
复制代码
U) W& A7 D7 E* @! Y; E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。! ]3 y7 l) w1 O0 W4 p: q( S2 \
9 m! J7 ~0 L* d. l2 }
3 x. A. Z4 {* g- Z |) o1 r顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)( t( Y$ ^- d7 s ^; {
|
|