|
|
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
×
" ?0 u% ?2 a4 e/ a8 P8 [0 S8 S: F
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。' m+ p* O* q; X$ _
- importPackage (java.lang);! {: F# F/ c% |) ^3 L' g+ a% n
- importPackage (java.awt);
9 C) M2 t) b/ l - 6 x+ N1 d) s- j0 ]& C7 A) e3 J
- include(Resources.id("mtrsteamloco:library/code/face.js"));. l% K# ]1 T- ] P9 O1 O2 V
- " a4 y5 T5 G& w. l" T
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);5 j) \; V+ ]& @( j3 h) [+ e
- " \" B, @+ X* v
- function getW(str, font) {
+ D' ^) W) Z R, ^" s - let frc = Resources.getFontRenderContext();
. I7 ^5 y8 j5 p) ] - bounds = font.getStringBounds(str, frc);
- I( b8 p# b7 T2 n - return Math.ceil(bounds.getWidth());: M- @0 X4 O, X. ^' s* V1 t- l
- }3 [) r, L' k0 ^ \( ?$ @3 F- E
- : @! ?9 g# J$ v' V
- da = (g) => {//底图绘制
: O/ g1 ?% n' n1 r9 Y1 {0 k - g.setColor(Color.BLACK);
$ s x# d: h/ x, \4 m - g.fillRect(0, 0, 400, 400);: M _8 G' ?% o4 }
- }: C' x2 s0 b* [, }3 z$ R! f
- 5 g \5 w' @ I* l8 ?8 i) Y
- db = (g) => {//上层绘制
+ B$ D% V3 @& `5 Q' m3 V) w - g.setColor(Color.WHITE);4 ~3 B: O! v+ w0 a
- g.fillRect(0, 0, 400, 400);
7 e9 `" D# I+ Q2 M- } l7 G* K - g.setColor(Color.RED);
8 ~! h1 N7 A5 ^6 u7 t - g.setFont(font0);
3 Y6 L' W. n0 v @3 v& V. v - let str = "晴纱是男娘";1 s. T7 [; N; f# e3 g3 M# D I
- let ww = 400;
) m' L" f, Y6 T% ^+ q: T - let w = getW(str, font0);! ^# S$ U' `+ G. x
- g.drawString(str, ww / 2 - w / 2, 200);" f3 d. t& O6 G, b0 ^4 ]# Q
- }( } S+ i5 w* N# ^, m
- ! |( x- d! t/ U, l9 D( c' G( V' A; Y
- const mat = new Matrices();
6 K8 J6 q, ]& O8 c! C4 w - mat.translate(0, 0.5, 0);- E7 e+ p9 F7 }0 h( S* e, [6 G
: B; t1 {9 h7 S8 |# i2 y! @; B- function create(ctx, state, entity) {$ X2 k' g) J8 p( I& _
- let info = {
C4 x5 r' t3 D3 z2 C' D - ctx: ctx,# h x) I" @; [' f X( E
- isTrain: false,
. `$ W2 ]5 j. T/ Z, T3 q* T) ^6 ] v/ R0 u - matrices: [mat],
0 g+ O3 |& C6 x4 i - texture: [400, 400],
! C+ _' y, \3 y' C2 l& {) W9 m+ m - model: {
$ \ f6 |- e1 |$ H5 {+ B - renderType: "light",
7 o# y+ e9 @/ _- y$ l - size: [1, 1],
; m d2 x0 l h* h - uvSize: [1, 1]
+ N4 E! t, P, Z' z/ N8 Y - }
0 }5 D/ f0 V' U3 [7 x' C+ T4 C6 A4 J - }
n. p8 c$ E! \: w, R) s - let f = new Face(info);" F, d+ g! i1 ]/ ^9 O9 ^! w8 I3 N' D
- state.f = f;' N, |0 V2 }2 j- h" _
- * W) E+ ?, G* m" F
- let t = f.texture;
, ^' y9 \& d) Z2 Y k+ ` - let g = t.graphics;. `% G0 W0 A/ N; a! C; g0 ~
- state.running = true;$ G$ |$ x3 l; j% S. s9 x" T* ?- N
- let fps = 24;
0 O4 H1 U0 { q8 {6 i1 K3 Q - da(g);//绘制底图4 c) [' S; l m Y
- t.upload();0 W3 v0 G( P! D1 \$ S! n Q3 l
- let k = 0;
# C* s2 ^& Q: y+ E* r2 \ - let ti = Date.now();" |" l [' i, l7 S( W) `
- let rt = 0;4 o7 v- N( S, d4 D
- smooth = (k, v) => {// 平滑变化
- c- B8 a+ [/ y6 M; z6 ^# b- ^ - if (v > k) return k;
* U. }) J7 R* b. W( | k - if (k < 0) return 0;# f( _+ |4 Z7 ~4 u/ g. R
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
2 ^' f1 Q# d/ V4 C! n2 H - }, U6 N6 E& `9 G) y6 [; M. T
- run = () => {// 新线程- e9 d3 Y. |4 F- |- f9 f" i
- let id = Thread.currentThread().getId();
7 z+ ~: |) p, m+ \% D! x - print("Thread start:" + id);: k4 R) i X, S/ n
- while (state.running) {& ^& E& |1 `0 C, m: ^, d% n
- try {9 c- O+ S3 k& o ^1 J- i; v9 {
- k += (Date.now() - ti) / 1000 * 0.2;0 L' E3 {# S6 w! ?% T
- ti = Date.now();
2 t1 S! l7 A% N( _4 M - if (k > 1.5) {
& T* G1 W' q* m# X4 n - k = 0;
P; \* u7 p6 Y5 q0 f - }
# y. S* x5 [; m2 |3 ? - setComp(g, 1);
* f5 J2 U5 T* r- H7 g8 f - da(g);8 p; G o9 K3 m0 z" z
- let kk = smooth(1, k);//平滑切换透明度
2 p9 t+ M9 ^/ y- P, h% `- j% W - setComp(g, kk);
# D( g* h! Z3 r* `$ M+ n - db(g);
0 [+ P5 n% {- o+ y0 Z4 V' \ - t.upload();, q9 p5 W- C0 Z3 I8 ]. K4 T4 k
- ctx.setDebugInfo("rt" ,Date.now() - ti);% T2 S: N1 s/ n" W; d$ T
- ctx.setDebugInfo("k", k);
& r* @4 X. }5 n y4 M4 \ - ctx.setDebugInfo("sm", kk);
! p8 Y) R* D8 y# L. S+ W - rt = Date.now() - ti;* g" f. k) b* F' Y/ c* [/ X
- Thread.sleep(ck(rt - 1000 / fps));5 d, ?& ^8 z0 h- v/ D$ x7 P
- ctx.setDebugInfo("error", 0)
/ a$ ~; Z, Z" j P+ B, f3 X - } catch (e) {
0 S0 `% _$ g8 _+ U O' `9 M - ctx.setDebugInfo("error", e);
# P: x! t! @6 } m: v- I! t - }
% u) D+ m- U( n" ?2 J' \ - }
- V. v7 S& d- m; v1 }+ I- _- \& e - print("Thread end:" + id);1 l, ?+ _# Q+ S) n0 ^
- }
5 q0 N6 J! J0 F8 I - let th = new Thread(run, "qiehuan"); b4 C. r0 O% D4 _% q
- th.start();
B9 U+ ~+ c9 e+ o2 H - }
' T" B1 F/ |) V0 |$ q - 9 [9 P* c8 B. V. p
- function render(ctx, state, entity) {
/ v% p5 F8 V3 x* n& i - state.f.tick();
. ^3 A. s& I1 `) X" u/ U2 s - } c5 T; W- _5 A2 k! y7 z% J
- ) S$ q- n9 |, x+ ~
- function dispose(ctx, state, entity) {
% @9 Q+ V5 z! r) } - print("Dispose");7 {) f/ j/ S' N6 y2 j/ |
- state.running = false;, {" }0 _& } \ n, k, f( H$ ~
- state.f.close();
, E( ?( N6 V' u5 D+ A* u! j- T - }" v3 @ `4 H* D" i- O
- % ?9 c: q0 M- Q* Y
- function setComp(g, value) {! j5 W" C, Q+ s4 g3 a+ v& A
- g.setComposite(AlphaComposite.SrcOver.derive(value));( I6 O. U& j6 n% F
- }
复制代码
! }' P! o8 z+ S p+ f+ j0 d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。0 L/ Q; h2 \. Z# q2 i4 d B
8 `! m2 c6 Z h* A- W* l0 E6 G8 a) N2 Y4 `& ]$ f# y
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
7 N( k d1 L5 Q* m: \3 Z& ` |
|