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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。
. c$ T/ j5 [1 a( u1 P5 R: ]" {: x- importPackage (java.lang);
# X+ v# B4 d6 ^" X( O4 h - importPackage (java.awt);) N) u l5 h5 t; } j: W0 j* s
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- include(Resources.id("mtrsteamloco:library/code/face.js"));
# Y3 G2 G0 {0 o, N x1 p3 P
1 @, d& d( e4 {* p" j! V- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);7 E3 I* z% m& E# f* r
- & N5 j z# w$ N+ s6 ]$ |. ]
- function getW(str, font) {# g6 V; s' P; x1 k6 d
- let frc = Resources.getFontRenderContext();, V$ |# K- D: J. H
- bounds = font.getStringBounds(str, frc);
# Z! Q; C' Y# G/ ^8 l# N - return Math.ceil(bounds.getWidth());
+ x+ @( ?1 i. d' T- Q& |% D - }2 _9 a" k% w0 I* Z* o5 |+ v# X
- # Q: [& X$ I ~1 k, q
- da = (g) => {//底图绘制
9 n7 r3 M# }- h - g.setColor(Color.BLACK);
3 U9 ~1 g! }3 B& q$ t" G k - g.fillRect(0, 0, 400, 400); }' n5 M& U" I0 `0 O) G/ g
- }9 R; z' B& n9 } S, O: D
4 B0 d# o* Q0 V: ^, p5 W& M$ E& G- db = (g) => {//上层绘制
( z2 Q! n3 t3 W, W2 U6 _ - g.setColor(Color.WHITE);
) e$ W O% L% g# Z) a - g.fillRect(0, 0, 400, 400);
) ]* V( b5 d. E1 t+ P# l& a - g.setColor(Color.RED);! V+ L7 q( E: l G+ ?* u
- g.setFont(font0);4 C5 V ~ O& C3 L
- let str = "晴纱是男娘";: U3 a. y2 Q+ F# I
- let ww = 400;8 b) q1 @- F& P. H2 G+ D3 Z5 D
- let w = getW(str, font0);
2 B! l$ s* O0 \, v9 S3 Z3 ? - g.drawString(str, ww / 2 - w / 2, 200);# Z# I3 {8 w( g9 o6 N* T! x
- }
% l! ^- \& E3 M% c. D2 y3 \2 Y
/ v) _4 v. c) t, ~0 Y- const mat = new Matrices();
. s0 g. v7 I. S3 l g$ S2 d- B - mat.translate(0, 0.5, 0);
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1 O: I$ m+ p; @) x5 ~- function create(ctx, state, entity) {
) l9 p$ f: t4 G8 D2 O9 h - let info = {1 ?4 n8 {. v( p: ~% e
- ctx: ctx,2 e4 `+ W, T, f
- isTrain: false,5 G$ u- p- G0 f1 N( X, {
- matrices: [mat],3 G% \* t t* ^
- texture: [400, 400],1 I5 v9 }, N% h* X$ O8 w
- model: {3 p6 d: p9 }& n) ]
- renderType: "light",
, V: q; |2 c4 f# l& i - size: [1, 1],' Y& @. {1 W/ D* G4 I: r0 P
- uvSize: [1, 1]
. A8 f' v2 X5 X6 e) ?- d! s8 c - }
( U2 B! F, E. [/ a& I* j5 x% x - }0 L$ z# k1 r0 u5 n
- let f = new Face(info);
1 f: v% j- E( ~8 r - state.f = f;
5 f `7 K9 ]3 q4 e- j1 b, ?1 e$ l
9 c) x+ z. J, r# Q0 q6 u- let t = f.texture;
1 F" y2 W- \3 n& }, ^ - let g = t.graphics;: }; h+ D. ]+ p. G
- state.running = true;" A0 N5 V" K! J) B1 i t4 M. W
- let fps = 24;
6 [1 i/ f: Q1 l, ~. V9 t - da(g);//绘制底图" D" `$ T" p6 k) ^
- t.upload();
8 V" I; h+ y6 n8 F0 y1 c; o - let k = 0;9 j0 C F; U( ~# E/ P
- let ti = Date.now();* V6 V( v2 p6 [6 w8 c1 S
- let rt = 0;1 h. W( `& b. |% @/ w
- smooth = (k, v) => {// 平滑变化
' r' y5 u0 B. l1 P* I. [4 B - if (v > k) return k;# K% Z9 B N, z% E T- y5 q! D
- if (k < 0) return 0;
* O! c0 D; E4 u+ r0 E - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
$ F2 B4 G0 x* i u0 ^ - }5 }2 M$ c: y/ M+ x/ l: r8 m* O+ ~
- run = () => {// 新线程' W, X e3 i5 R6 I
- let id = Thread.currentThread().getId();
) j. k) c+ f; F9 N: }- E: r" y' K- E - print("Thread start:" + id);
0 B1 F; b' T3 k4 j/ t0 Z% b+ p) T - while (state.running) {
) N9 m) ?- s6 T2 b - try {
9 h5 k3 [% B7 e1 A$ b, k/ l6 d - k += (Date.now() - ti) / 1000 * 0.2;7 L8 ]) G/ Q, s2 U& x W
- ti = Date.now();
; n" b" F0 O( y$ k - if (k > 1.5) {
% M3 Q. S/ y+ E- ?; U6 o - k = 0;
0 z* J- U4 {5 ?* F! Q - }
7 M* y9 Q' [+ \; |: ` - setComp(g, 1);
: O* I: a* O( t7 Q6 i, K2 Y - da(g);
* U) T( Z+ n7 }3 ]: V - let kk = smooth(1, k);//平滑切换透明度2 ?) ?" j/ \$ k+ x( }+ c' D {
- setComp(g, kk);" l$ d! J' b7 Z& N4 Y, h
- db(g);. }: s0 t5 ^; h4 J G' j0 l
- t.upload();
% R9 B3 S4 K* D. W4 j, K$ w: T$ r - ctx.setDebugInfo("rt" ,Date.now() - ti);
# ?$ g( A! P; W- L - ctx.setDebugInfo("k", k);7 E. |: a9 v# K- |- s9 \
- ctx.setDebugInfo("sm", kk);
# r7 t: j9 I( l# O, B. F - rt = Date.now() - ti;, {! ?* e2 e ^6 F
- Thread.sleep(ck(rt - 1000 / fps));
- \# Q( p( s: z7 a R9 E - ctx.setDebugInfo("error", 0)" ^8 `* ?6 I! B7 `( |$ X
- } catch (e) {
) e f) K" S: \/ G - ctx.setDebugInfo("error", e);
+ l" w ]& x. @# E7 H7 @ - }
# i( n( x, u" v0 [% S8 e- q8 M$ P2 ^ - }* O% W7 l$ T+ c# D. ?
- print("Thread end:" + id);
$ C! @7 m1 E) K1 S/ u% F: { - }
* U$ k9 j' j- S, \; M) i6 M - let th = new Thread(run, "qiehuan");
* s6 t. V' l/ V2 e# L - th.start();
7 q" ^, J. {2 V6 y' G0 \8 T: f - }0 g4 P( n# g4 L) F) |! l
" }$ r8 R$ m. f* t- function render(ctx, state, entity) {% I: N* R/ c$ k! Q2 Z v5 W s
- state.f.tick();7 \5 l7 o: C$ C7 y
- }% C; ^. J7 w! W( @9 S' S, I; p
- * V2 ], I- X6 I/ I
- function dispose(ctx, state, entity) {
. J; e' y" M2 T; S5 q- p% f& { - print("Dispose");
/ n. C0 [2 ?& m& o7 o8 T - state.running = false;7 W: \0 V- t7 `+ K4 C2 T
- state.f.close();
/ b: w/ V) i5 S* x- }! Z2 c - }2 S" m; j% ?% B+ v, T0 j. \
8 U1 w6 Q# c/ H0 k( x. j, H9 C$ X# I- function setComp(g, value) {
% }0 P$ k2 ?4 w- u, c; M# g( Z - g.setComposite(AlphaComposite.SrcOver.derive(value));9 |2 G% J. W! S2 I- f6 u9 w
- }
复制代码
5 ^2 u) X& ]: H: m) k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。
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1 m2 G' Y9 j% y' o% I顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
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