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- f2 }+ P7 H. k j& I) _* r6 d# K1 n7 X7 B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 t) L6 e; \! @8 L# f
- importPackage (java.lang);3 H6 C4 t0 a: a( X' M/ I, y
- importPackage (java.awt);
: g6 o; F; S: {9 p
& N" k$ F' N* _3 n) ?- include(Resources.id("mtrsteamloco:library/code/face.js"));+ `1 ?: R) g1 w9 g8 c
4 D& _) `5 s, L& u) q6 A; k, c4 b: d- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);% C3 P$ H8 r. L+ v5 q3 `8 U* ~0 g
- ( a9 U4 m: F/ t2 y
- function getW(str, font) {
, f3 u# f* A0 Z: N: ] - let frc = Resources.getFontRenderContext();8 f: e6 ^! A0 D8 Y1 U
- bounds = font.getStringBounds(str, frc);
9 ]9 [7 r, x8 \5 ^ - return Math.ceil(bounds.getWidth());
- N0 c$ E: a5 b9 l" G - }
z+ U1 l8 Z \6 K
! \6 O% Z/ A# z: f# H7 O5 l- da = (g) => {//底图绘制; T. A# x+ Z4 l$ p3 Q
- g.setColor(Color.BLACK);
% g( _& W# P- u - g.fillRect(0, 0, 400, 400);
( p5 c! E$ w. B1 m( Q - }
$ n( K9 g" I9 j
6 h9 _* p) R. J& `) r- db = (g) => {//上层绘制& t2 i5 s& T% A+ M5 O
- g.setColor(Color.WHITE);0 J9 l4 N, w8 k: C
- g.fillRect(0, 0, 400, 400);
; ^( d" b& N( D( M: g1 C - g.setColor(Color.RED);" i4 a1 E& e$ |; |$ A" o. Z) S: @( c
- g.setFont(font0);
5 d/ q! X' R }) C. l* S5 C( b& u8 J - let str = "晴纱是男娘";+ P" W' o4 i7 E8 |4 t. e% Q
- let ww = 400;
/ \! A8 ~4 E. T0 m - let w = getW(str, font0);8 I3 S3 N6 G ?7 w4 D' S3 I5 k2 W
- g.drawString(str, ww / 2 - w / 2, 200);
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7 W; S! a+ N6 t4 t% ]- const mat = new Matrices();" Q9 r6 s5 C2 C* o/ u# f3 {3 |
- mat.translate(0, 0.5, 0);7 j! c/ q+ j/ r; W' j: ]
- ! t* H' ^- z# m
- function create(ctx, state, entity) {7 S6 V. C L0 B! {/ U I
- let info = {+ H# N% M$ L6 B4 Z8 c( \- D. n
- ctx: ctx,$ l1 p& k% g/ c6 T3 f$ U1 |6 r
- isTrain: false,
$ W0 }" y4 o3 |% g* ]8 R - matrices: [mat],* k, J- p2 F! Y& h2 d
- texture: [400, 400],
0 [. R5 p5 J1 j a, o t' o. v - model: {) r8 g& _/ y9 k- M5 j
- renderType: "light",2 z# Z5 v3 ]3 ^" p+ k2 l
- size: [1, 1],& F a/ P: Y6 C7 l1 e
- uvSize: [1, 1]9 d4 i, `% F8 H2 k9 e, Z9 D7 ~
- }
. J; B! u" b4 \% b. p$ h8 J7 d - }. r: v# D- _3 p& m4 K
- let f = new Face(info);
& C( E, t; F' o( N0 |, n, F3 |* H$ k - state.f = f;6 i: t5 g+ k/ z* j
, d' g& Q( {+ E- D) O6 d T- let t = f.texture;* g" |2 P6 E8 }7 s
- let g = t.graphics;
& T# r" [: E/ I/ ^9 E# G - state.running = true;( o4 v1 C( r5 R0 y, [
- let fps = 24;
, g" F6 ~$ S _ - da(g);//绘制底图
8 E6 `) I) K! P4 y) _' |; i' a5 \ - t.upload();- x) r% e1 z0 _9 R
- let k = 0;
7 W5 y8 t5 j5 L5 x; X+ t - let ti = Date.now();
7 n1 g6 j* ^% z# [4 i$ P - let rt = 0; m# Y9 t; m+ s. D
- smooth = (k, v) => {// 平滑变化
: Y: R8 t$ p! u* I - if (v > k) return k;
) z! G. f2 a, y A/ | - if (k < 0) return 0;
. x/ J( C( \# u* J$ D - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;$ \+ l$ y/ L1 a
- }
) c2 H3 g+ k8 s5 K - run = () => {// 新线程
1 b8 X. q, j: a - let id = Thread.currentThread().getId();# P9 R, f% Q3 _: x1 o
- print("Thread start:" + id);
7 G/ W/ q* b5 N8 ^2 G( q - while (state.running) {3 W! H3 ?: V5 C- d/ U
- try {
$ k; N5 ^% X1 S8 P4 M - k += (Date.now() - ti) / 1000 * 0.2;" u# k" j; k6 K
- ti = Date.now();
3 k- h9 E: N2 V; R# V( c9 ` - if (k > 1.5) {( t' F% q* ^7 ]( m
- k = 0;
. D( W2 @9 l& M! a5 t) B - }
% F/ K( S3 Q/ v* ?2 l - setComp(g, 1);) m! @1 D& u7 d7 y: U/ R% S
- da(g);
7 k' m) j2 U; w - let kk = smooth(1, k);//平滑切换透明度0 @! q" g% H) @7 @% n# n% m
- setComp(g, kk);5 E/ c4 [/ j. Y* p: L& L
- db(g);/ o! R2 r5 n' I$ G- V. S+ {! F
- t.upload();5 g) q6 I, i; }' P
- ctx.setDebugInfo("rt" ,Date.now() - ti);
4 J J& |$ i7 { - ctx.setDebugInfo("k", k);& G# t: ~$ H/ j4 b+ X3 r4 \ k& X
- ctx.setDebugInfo("sm", kk);
- ]- P4 ~3 c; I' K4 d- C - rt = Date.now() - ti;0 m3 S% ^# u1 F4 a3 c0 M s0 O
- Thread.sleep(ck(rt - 1000 / fps));
* o; I# e% r/ M- g7 L9 V - ctx.setDebugInfo("error", 0)
$ n- ]- E* ?1 M2 Y/ r8 R2 r - } catch (e) {1 c+ S) a" l% W4 Y' x5 U
- ctx.setDebugInfo("error", e);
, N0 i2 ?6 U( H F7 C - }7 u2 T0 c5 m P% p
- }
/ ~' J/ D" G5 b. B4 b' l7 b5 X c - print("Thread end:" + id);# X1 I ~! J4 V, b9 M
- }
+ H( Y, z9 g9 M! ^' W* r; L8 L - let th = new Thread(run, "qiehuan");, A& d5 Q* l$ b6 w3 ]3 Z
- th.start();, A+ S7 Q7 q. M' @3 o5 C
- }- O/ i' A+ j2 `: Y6 C4 ?
! z! ], D G) y3 a, D$ t t: |- function render(ctx, state, entity) {/ ?7 n4 ~+ ] }
- state.f.tick();
' y j. Y5 o* P' \2 J) F! B - }
2 ]6 H) j/ o! c, `. ^ - & n8 r1 e1 H8 @) t# ]
- function dispose(ctx, state, entity) {
0 ~9 U' ?4 p: [; Y: B* I" P. [ - print("Dispose");
" ^$ p6 P* |5 R( H! R6 E - state.running = false;
( i- E: h% E% k* m - state.f.close();
& W& r) ?* y: X3 J+ ^1 `( ~+ S - }
8 ~% G- o& m* Y, e% X3 E- }% Q
% F7 I3 k! S. d7 l$ n1 l Y- function setComp(g, value) {; k& A6 y& q {- v
- g.setComposite(AlphaComposite.SrcOver.derive(value));
+ o/ p4 S0 |$ q" ~' {( T - }
复制代码 6 ]/ F& @' @( [: 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。
- A$ i& M' v2 g1 k: E; A* T* s5 R9 _# i6 a# L3 j6 c, k
b6 l. w N7 |9 c! s. @顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下); h7 {$ Z) {" M/ c6 P
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