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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。) A/ d/ F) z# ^& s/ Q4 M3 a
- importPackage (java.lang);
( M: q9 D4 \6 u2 Q6 I7 d, P7 A, E - importPackage (java.awt);
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# m# k; ~: X& w% V" i0 \- include(Resources.id("mtrsteamloco:library/code/face.js"));
- H& F* j& ]0 S+ M" U9 Z* P" t - % W( w" E8 a# t2 u' Y0 A |+ b2 c& ^$ y% t1 P
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);- N% a, t& H! z0 A+ a
( n% Z7 k! Q! T$ Z& G- function getW(str, font) {
( Y! ]! m& } C4 U0 `% E - let frc = Resources.getFontRenderContext();- t6 w+ v+ j, O% O% t
- bounds = font.getStringBounds(str, frc);) J/ u5 O: f) l5 j3 s# _* @0 F. P
- return Math.ceil(bounds.getWidth());
( U. J# H' [! h) @ - }
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/ b5 d) K& Y$ w+ r- da = (g) => {//底图绘制6 c, w* b8 K6 V0 s$ _
- g.setColor(Color.BLACK);
* s: {3 L/ a3 I9 N) e( n - g.fillRect(0, 0, 400, 400);
# ?! `) E- O- K - }
+ Y7 n4 E" c W j% ]- O/ K6 m
+ s4 \7 }4 R2 M, q8 i% Y8 Y- db = (g) => {//上层绘制0 b6 K$ ?: W0 W9 G5 [7 i# Q# B
- g.setColor(Color.WHITE);
( o: J" w3 ~- a' F6 { ?; P - g.fillRect(0, 0, 400, 400);
# t- f# B; x$ K+ M' w& } - g.setColor(Color.RED);
- @/ N Z' S' h& E( t - g.setFont(font0);' |6 y) N7 Z8 b/ z9 S% N
- let str = "晴纱是男娘";
& i( V/ P& T6 y8 J' g% k" A - let ww = 400;, R4 `- `# o) A! r' N4 y3 h$ A
- let w = getW(str, font0);
+ s4 _; N# T4 I8 R# A7 }9 R6 @; U - g.drawString(str, ww / 2 - w / 2, 200);! a8 S- N t, R: e
- }! X m1 a/ V( M% e# ]
- |3 g0 b* {+ K" J7 ^$ Z" l$ V1 S
- const mat = new Matrices();
$ n& l3 v9 g5 j- k, A - mat.translate(0, 0.5, 0);; D6 k3 R3 K* k; a
- " e! U4 M( o. E; m" E$ y
- function create(ctx, state, entity) {4 O+ N( S8 [, r2 O" Q' v
- let info = {
) ~' h/ P( g6 R9 t9 W3 l - ctx: ctx,
% m$ e: u |' ^" N& E/ Y - isTrain: false,
( \. K* t; }$ K- N' T5 b; S8 e - matrices: [mat],
x, h7 \8 Q5 ]9 a% }3 V/ Z# G - texture: [400, 400],' k6 H% U0 H' ^$ T9 U- W
- model: {2 }6 P4 [6 N: q6 r2 j
- renderType: "light",$ c) m9 b! g7 K' }4 a t
- size: [1, 1],
) u( z" T: x" d8 l9 v7 P; d- u - uvSize: [1, 1]
: S9 i& ~. M6 f) |4 @ - }( o5 H% c% ^2 e. H5 j* w. x5 N. j4 ^
- }
7 ]6 ~0 a+ y5 T4 L0 O4 L$ p4 j - let f = new Face(info);+ `- W1 H* [6 ?# W2 B& a
- state.f = f;/ V& R6 B* T8 B# `" S8 F. _: _
: W5 x# W1 d7 x# m( u/ F( K k- let t = f.texture;
3 A2 z. D& h c% V# V - let g = t.graphics; [4 `7 k" d# k! c) C/ g: D3 G
- state.running = true;
8 O$ g$ J1 T1 _6 s, R9 c! z - let fps = 24; I4 S; }' g- m: o" H8 a5 R* c* Z
- da(g);//绘制底图
U8 r8 V* J% N( P, M5 o! f: ? - t.upload();& J s7 ~0 D) F# c( [- y6 y
- let k = 0;
6 @8 i2 |7 y8 V# U - let ti = Date.now();
7 e5 t9 m2 A/ E6 E I - let rt = 0;' q5 S" i" p/ v, D& m
- smooth = (k, v) => {// 平滑变化6 `3 k0 ]1 v% W2 l1 g9 b( V7 D
- if (v > k) return k;2 }, j' G0 p9 B
- if (k < 0) return 0;/ k7 b3 ^- H3 h1 q
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;6 {& L; c& ~# V- I. ]
- }2 U/ _& D3 {' G+ v; L, W
- run = () => {// 新线程2 B7 \, I& F6 |1 v5 z" ^
- let id = Thread.currentThread().getId();
+ \1 d/ ^% m. ~/ }! v3 }) z - print("Thread start:" + id);& I# P1 L( O6 l5 O
- while (state.running) {
$ n: }$ @$ W% v - try {
[1 [4 N# n' |! m, T/ \) h - k += (Date.now() - ti) / 1000 * 0.2;
9 A! t) C2 I, O8 v - ti = Date.now();: \% z; ^7 j9 Q2 v _
- if (k > 1.5) {# Q. d- d5 a5 _8 H, c8 z
- k = 0;
; a3 o) x6 f3 M+ `# [5 ?$ ~ - }
; B/ X2 A0 s) x - setComp(g, 1);1 U0 ]8 y: t9 J% p% [; z
- da(g);7 S0 B! o% J& y3 {* q
- let kk = smooth(1, k);//平滑切换透明度
4 R0 ]/ {& P5 l. S% s5 k6 p6 I - setComp(g, kk);9 c8 P, k! ], u& _4 q( S2 y/ L0 [9 D" L
- db(g);( ~& |! E- e5 N9 t& q- Q' ^! C7 X# S
- t.upload();
4 ^4 E) T9 O) V2 f& o - ctx.setDebugInfo("rt" ,Date.now() - ti);
0 [- S1 Z' P$ b1 v - ctx.setDebugInfo("k", k);: a! n" Q. V$ P2 D
- ctx.setDebugInfo("sm", kk);
4 }* O: \/ I0 j$ l- f - rt = Date.now() - ti;
9 Y& X/ z6 x6 G3 _' \ - Thread.sleep(ck(rt - 1000 / fps));
% Y6 D& J; v2 ~: F5 Z+ v - ctx.setDebugInfo("error", 0)7 \6 z& }1 S" A7 X! W
- } catch (e) {
* `9 z" X! _$ n4 L# o - ctx.setDebugInfo("error", e);" Z! o* [/ Y) @7 O* D
- }
) U5 E% h, d- l$ u - }
9 ]! ]1 a0 q$ H1 Z( C/ J) f, R - print("Thread end:" + id);1 f# `! E# b. o& D+ A" L
- }7 }( j# D6 ~7 Q X
- let th = new Thread(run, "qiehuan");( }; N/ ^+ k1 o8 ^- q k# m8 d$ p
- th.start();
- }) V& P$ C/ \1 ^8 a - }. ?+ }% y# ?9 ~: v# n2 F
- 7 }* `1 o6 h8 V' [9 X, s
- function render(ctx, state, entity) {1 L$ x1 s- K6 v( S
- state.f.tick();* n5 Z0 ~. H8 J4 [3 V: t
- }
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) o$ O# m4 x v' D1 x- function dispose(ctx, state, entity) {
) H$ O5 @# y& k5 I* P% v* j$ |$ L - print("Dispose");
9 F7 r7 w+ S+ @6 u9 G- b2 d - state.running = false;
' J' y8 H( ?% } - state.f.close();
7 M$ c8 R5 G0 c - }
' ]; \, h2 I0 ^# s - % u$ w S. D1 D4 I5 r
- function setComp(g, value) {
1 t! [7 N8 J4 _. Z f+ n - g.setComposite(AlphaComposite.SrcOver.derive(value));& g" y: P K! J1 b. Q( x$ |( ]' T
- }
复制代码
' G# y. B2 V5 M! H( S- Q; w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 D: N1 R$ y/ k+ V; R
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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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