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) s8 K) |7 R3 w7 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。3 K! |- n9 w* c5 c J- A1 Z9 b9 \
- importPackage (java.lang);4 ~3 U$ L; A4 U7 U/ `! d4 n
- importPackage (java.awt);
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4 r8 h9 m$ ^, J3 T' a S- include(Resources.id("mtrsteamloco:library/code/face.js"));! B) M" k2 {' g7 O' S7 O' |! u( c
- ) P" J( U& l {4 s* f8 l- p% _
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
% w9 P7 v4 q9 o5 Q* J. \ S# ^ - + [' `! S/ Q6 T! s
- function getW(str, font) {$ Z2 a) e$ b, F! G
- let frc = Resources.getFontRenderContext();
" B! a# e8 u; h7 y* n+ I6 Q" ?/ K - bounds = font.getStringBounds(str, frc);
) P" `& A X/ y- y2 E - return Math.ceil(bounds.getWidth());9 y7 P: \6 O& o# S5 O
- }
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0 |5 C( U5 G) }8 W; V/ A- N- da = (g) => {//底图绘制0 l2 V3 T# y2 [/ z |
- g.setColor(Color.BLACK);: X8 q/ J6 k7 S& a. l) X6 O
- g.fillRect(0, 0, 400, 400);5 Z% h1 S( H1 ?4 W. S
- }
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- db = (g) => {//上层绘制* s. Q l3 y% u9 ~6 j
- g.setColor(Color.WHITE);
9 J/ Q4 c5 {( y1 i* h" i0 ^ - g.fillRect(0, 0, 400, 400);' u+ T5 L5 v. N
- g.setColor(Color.RED);
$ \$ X, e8 }" f! m- L: C$ v0 y& W* L, v - g.setFont(font0);* j! [, Q, Q/ \+ i% V% K
- let str = "晴纱是男娘";
' {2 t) [& C/ L9 f8 R. C+ d, H5 V - let ww = 400;* t& x) P) u! ^% ]. t. F
- let w = getW(str, font0);9 Z6 ~ ~* ], r! r5 R# ?# J$ Y
- g.drawString(str, ww / 2 - w / 2, 200);( A" e5 D5 u$ o2 N+ Z
- }6 s; r6 K# \* d) j$ g/ j: D
- 8 U: O) W. S" S0 t* J8 Y1 [& g( p
- const mat = new Matrices();
4 `) e( W3 e4 e - mat.translate(0, 0.5, 0);
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- function create(ctx, state, entity) {
3 m" r6 n' ^) F( Q& B. B! ? - let info = {8 e6 k% D' r, x% T6 I/ F# W% q
- ctx: ctx,& F% V4 f3 k1 Y7 z! V
- isTrain: false,$ y: ~+ M4 W& c# p+ m
- matrices: [mat],, l$ z$ A5 Z/ U5 q2 W
- texture: [400, 400],
# Y$ F: p) t2 I- y - model: {8 W0 l, N7 n9 A# I& i# v
- renderType: "light", l1 k0 ]4 c* b8 G6 x$ |
- size: [1, 1],8 K8 r+ m! G( a$ |
- uvSize: [1, 1]8 {6 N6 N- y6 ]
- }
. J! y/ p! I4 n! T+ X - }( s+ @1 i3 j/ }, R
- let f = new Face(info);
. x% _, _' [& h& E9 H2 P; k - state.f = f;/ T# e0 J! v' O3 W* g6 W# I0 O! ?
- . ]. _) F: n# R" o
- let t = f.texture;* w" q4 T: ] Q) |& @: o
- let g = t.graphics;6 J4 {7 y+ s; e
- state.running = true;( |. S: s& E% p' t. u5 a- r4 J
- let fps = 24; c6 B7 [: N; R) p: O8 m3 R
- da(g);//绘制底图
& H6 ^6 l# r* E; U. ~$ L5 | - t.upload();
9 m) Z4 U+ o% a! G) A9 C - let k = 0;
! @; {9 n; `& x# {7 Y - let ti = Date.now();1 t( z- t/ G5 c$ l8 N ^. n7 e
- let rt = 0;
; s% b, I$ d7 [- A - smooth = (k, v) => {// 平滑变化
7 [. Y' }/ X3 ]7 M - if (v > k) return k;
7 P+ a# r- M% v5 \8 G# L# m, r - if (k < 0) return 0;
N+ f( z/ ~6 W - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
# }) X, p6 f! S; ? - }
9 x2 C8 G2 s) { - run = () => {// 新线程( ^% ?% W+ f, j/ ]/ L( s2 v5 _1 I2 C
- let id = Thread.currentThread().getId();
% s# D3 C& U& g m - print("Thread start:" + id);
, r( b) `- u. t0 `0 R - while (state.running) {7 u6 P/ \2 Q4 v! ]
- try {
; [& Q) Q j4 h: f& V0 v+ c/ Y - k += (Date.now() - ti) / 1000 * 0.2;! L. T2 O, x/ X0 `" v& Y% u1 K% f+ j
- ti = Date.now();
5 _9 k8 ]6 T/ e, E$ K - if (k > 1.5) {
3 N; w' p( [; e/ B3 u - k = 0;
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- setComp(g, 1);
0 M0 Q& ^, b L, {5 H" \, ] - da(g);/ c$ o- Z4 S, `0 n9 R$ A+ d+ v$ O
- let kk = smooth(1, k);//平滑切换透明度
0 L D7 ~0 M: V( t/ K1 _ - setComp(g, kk);0 N8 E, I: a* B% R* ]4 c2 @: }
- db(g);
. d5 {8 g+ i: P7 W - t.upload();. u! h2 G* w: t9 R; p6 Q, [& O
- ctx.setDebugInfo("rt" ,Date.now() - ti);
8 c3 a" L4 {6 c5 P% w6 k7 y3 d" l - ctx.setDebugInfo("k", k);
# V# S0 z% S; n! p" y( p; c# p - ctx.setDebugInfo("sm", kk);4 n8 [3 c, Z' V; |# P5 E; _
- rt = Date.now() - ti;
, X ~# t( m I7 _1 l8 a7 m9 ^ - Thread.sleep(ck(rt - 1000 / fps));
; P' A; x$ d1 T$ v! J7 ?3 C) i$ i6 s3 Q - ctx.setDebugInfo("error", 0)9 b5 h/ |! H, n5 L' g# z
- } catch (e) {" [) R* B# e1 c3 z% @8 x' C
- ctx.setDebugInfo("error", e);7 g/ g0 t# F! r! B8 V
- }; K# X; k4 [+ t2 o: _# f- f
- }
$ E: a) J. V4 t4 Z - print("Thread end:" + id);
* p8 z% U& k# y1 m - }
' k+ U, B2 G5 i/ D% H( K. D - let th = new Thread(run, "qiehuan");3 U+ b" R" c& U0 X- F' N4 I1 f2 X
- th.start();
9 b8 d" y& r) x; U8 e - }
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- function render(ctx, state, entity) {8 O% S. ~- _2 t" q, d
- state.f.tick();
& V7 T1 @' u& [) u- _$ A1 m - }' N, Q8 c$ F( v3 S
. L+ u, q, @/ K' }* j- function dispose(ctx, state, entity) {
0 `' B# |4 F m2 n2 W& `2 x' x# A3 C - print("Dispose");: j _& R% ]( M0 Z* U6 f
- state.running = false;. N# T; r$ g! P) W7 G0 F& N9 V
- state.f.close();
- _) T# O' O; C - }2 C* I$ r" _3 c% p) d
% H+ g( c4 m: O" g" u7 \- c5 a% y$ Z& s- function setComp(g, value) {2 \6 g4 \+ T( ?+ \6 F* f- s# Q
- g.setComposite(AlphaComposite.SrcOver.derive(value));5 }! Z' C; h; W: I) c
- }
复制代码 " }" E+ @1 ~- T8 @$ O. 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。
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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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