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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。; ^; p. w" N5 b
- importPackage (java.lang);7 J3 q4 ~; ~3 V( U
- importPackage (java.awt);2 r: G, L1 r& S$ r4 A9 |
: d) b- N" p5 e) k8 Z2 I- include(Resources.id("mtrsteamloco:library/code/face.js"));1 f" W7 o/ x5 z+ K. L P$ m% W
3 z& h5 t, `2 L# i& w4 A& [8 [- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);, \1 N( o2 \& u; v! `
- % ]/ A, T# y f- d8 |
- function getW(str, font) {' }4 |8 y& V$ R( z( |3 j
- let frc = Resources.getFontRenderContext();! F% Q! S: W, b( Y6 d
- bounds = font.getStringBounds(str, frc);4 ]. u C) Y- w
- return Math.ceil(bounds.getWidth());4 l" E& r8 |9 l4 k$ c
- }1 w2 L% i" b1 I, a
- * `$ E! I4 e9 a
- da = (g) => {//底图绘制 ]( Q4 x/ d) o3 H
- g.setColor(Color.BLACK);; m$ P- _% ]7 |9 } U
- g.fillRect(0, 0, 400, 400);
0 w* l8 v9 B# d) u - }
9 J3 T- w8 u0 Q* ~" @ - 7 m6 t4 Y5 {" Y1 T( r+ d# {
- db = (g) => {//上层绘制
2 M4 I: c1 B: O b& B; L. g0 A - g.setColor(Color.WHITE);
* J( Z M. a6 M+ Q - g.fillRect(0, 0, 400, 400);
+ B: U- Z$ N5 F) k - g.setColor(Color.RED);
0 T* E1 T- F5 z# a/ a - g.setFont(font0);
4 s; f$ [! q3 C/ L% ` - let str = "晴纱是男娘";' ^4 r, H2 u% i& S
- let ww = 400;7 n4 ~/ c9 Z* i3 o
- let w = getW(str, font0); g! U" i* _( o
- g.drawString(str, ww / 2 - w / 2, 200);
* @' d0 q* B! Y' o - }
, X1 n _& E# F4 c5 } - ! ^0 v* s4 n/ s K9 b/ j- G8 u- C
- const mat = new Matrices();
% p, k8 T& N& l- S; X" a* _ - mat.translate(0, 0.5, 0);) l4 e2 ^# n. }2 g1 a- Y
- " m* S* Q. x1 `; q `
- function create(ctx, state, entity) {; F; Z% W+ c+ u% M
- let info = {4 |* m3 T1 _# H/ `. X% V
- ctx: ctx,+ u! `6 w2 U) E! V7 B4 C" _" z
- isTrain: false,
{- y* t4 |+ q) `( A$ ~ - matrices: [mat],
6 r( r3 |# T7 S- p' S+ d - texture: [400, 400],
( K# G, Q! {9 e0 i. X' s - model: {
# b8 E5 g' b1 o$ ?0 | l - renderType: "light"," m+ M) S+ L- p g2 K$ M
- size: [1, 1],
0 G3 S/ W$ O: x. t9 ]5 `! u - uvSize: [1, 1]
8 |6 Q. U7 F* T/ W. Y- I7 ` - }* S- m" G3 g, b4 g7 w0 ~" @5 a
- }
2 }# R! J6 T9 p - let f = new Face(info);
4 ?! @ }# ?# A7 o) }8 c2 a - state.f = f;, ~0 d& U+ e: j. t; q- d
D' j% U2 e/ q( l. s; {- let t = f.texture;
7 v6 S5 `& B) X/ p! ?$ A - let g = t.graphics;
9 T5 w* u3 z6 T X" o% A* d6 t - state.running = true;/ f2 ?) J2 y: V9 \
- let fps = 24;# D. Y) |& ?" d: l/ W4 |! u
- da(g);//绘制底图
) ]% I9 Q# l0 b; _1 _ - t.upload();+ B6 E, ]' e! K6 H" J( d
- let k = 0;5 X5 M: Y7 g. K/ A7 G+ W( {
- let ti = Date.now();& ?5 u) w' h: E# Y
- let rt = 0;
4 q+ c, Y" v! {; ^' N0 T! _ - smooth = (k, v) => {// 平滑变化
& h! n, r0 s' P - if (v > k) return k;& Q3 E6 o: [1 C3 }) k
- if (k < 0) return 0;
' ~+ W# p* I' N9 k1 k9 e - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
. P9 c+ b/ B! V4 _; M- Y( K/ u# w( D w: O - }$ m1 y) ?9 G$ q+ Y$ r" Y, k. H3 p; O( o
- run = () => {// 新线程: i% d! e6 o/ s# b+ Y$ b9 \
- let id = Thread.currentThread().getId();$ @3 r! Y" H! G9 R: i! @5 b" z
- print("Thread start:" + id);) }/ |" \% K, J9 \6 e
- while (state.running) {
+ [- V) W$ c7 F4 ~8 _ - try {
1 F2 [' } x7 S- W# y - k += (Date.now() - ti) / 1000 * 0.2;' w b. G# E5 R
- ti = Date.now();. C+ u" I; ^" x3 r: j- \
- if (k > 1.5) {
8 U2 u# t5 N. {; m) \, Q: K7 l - k = 0;, _3 Q+ Z; x2 M+ o. ]7 v. ^6 I
- }
& y: b6 c8 H- O6 H# u - setComp(g, 1);
+ n y5 B, X9 {3 ~5 _0 d - da(g);
: q3 N2 S" g: v# U+ {1 i - let kk = smooth(1, k);//平滑切换透明度
- d) M% G& [9 r7 L2 K - setComp(g, kk);
+ {* C) S. i9 g - db(g);
; P# l0 k7 N: ?8 T - t.upload();
8 A& q2 k- L9 H6 M' I1 t, k - ctx.setDebugInfo("rt" ,Date.now() - ti);
) L* a3 `$ P3 z/ z7 \' { - ctx.setDebugInfo("k", k);9 O- n$ R, B2 P% L/ ?+ O7 y8 M& |9 P
- ctx.setDebugInfo("sm", kk);
% y; O# j' S/ f9 R$ X9 _ - rt = Date.now() - ti;/ T' |$ D8 j" {1 W% I. G; r7 a
- Thread.sleep(ck(rt - 1000 / fps));5 C: [% F3 D9 }: o6 ?9 U+ ^5 d
- ctx.setDebugInfo("error", 0)
4 G0 ]) ^( T7 o. X, Q* i - } catch (e) {% t6 L( G8 ^" v/ H
- ctx.setDebugInfo("error", e);
9 P* O4 Z% ?* _& z4 K - }( o+ D0 e% H, z+ b9 P
- }8 Z! K$ Z- r3 |+ s U. y1 I7 k) I
- print("Thread end:" + id);) ?9 @ E: j; D; t Z
- }
, D2 @. F) W' l/ N- T - let th = new Thread(run, "qiehuan");
, W: S- {3 `& F& ^. g6 x - th.start();
/ h# j$ N4 H: s - }, Z/ j& b9 E# p/ d! ^& l$ L
5 V2 @; U6 j' b/ g- function render(ctx, state, entity) {
9 a6 z5 f% P* _ - state.f.tick();
8 v* z2 A: U" [4 _' b2 o/ M - }% O9 f7 \ o0 F5 o* @2 B6 m. s
/ f0 K' V- Z) `, |$ O. m- function dispose(ctx, state, entity) {
1 q7 ?+ a A7 u7 m7 K7 k: }3 R& i# S - print("Dispose");
/ e$ G& s3 S2 t0 f - state.running = false;4 L9 w: K5 k I
- state.f.close();& {+ z* J, U' m, b- K2 V
- }
' i* a. i0 P$ ?$ D. K. W - , N+ {, [$ t# Q+ N2 h) h f
- function setComp(g, value) {
9 ~& M" M a$ a7 n3 W) W - g.setComposite(AlphaComposite.SrcOver.derive(value));3 Y7 u/ A; M' ?5 s0 Q8 I4 Q
- }
复制代码
f7 A, h- [" q; M: t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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# C* w- s7 `! k" F7 s# j3 L% p
* m5 y3 \2 q7 G8 u& }5 [5 e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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