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, `+ G5 W H! B0 `7 E1 l0 G, X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。% W3 ~8 ~ u; ^$ i* |, |7 ]8 z; Y1 U9 S
- importPackage (java.lang); j* A- r2 p) O. U0 p6 a
- importPackage (java.awt);
- ^ H# o& Z, [- U$ G - 5 ]+ c- t) n+ ^1 D5 t$ b, j! s
- include(Resources.id("mtrsteamloco:library/code/face.js"));# M% ^+ Z' H+ B" C6 b/ V
! I4 ?5 f5 }# q2 O! I- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);6 Z: ]- ~* M; K [
( A$ e9 E( i5 g8 P9 `8 G& ]- function getW(str, font) {
" o. T( l5 @ {/ m) _ - let frc = Resources.getFontRenderContext();
/ }9 x2 r/ o) w2 d0 x - bounds = font.getStringBounds(str, frc);1 o: d9 e* }0 ]" @- J" F
- return Math.ceil(bounds.getWidth());
4 k7 i3 [) F/ G$ s - }
8 @0 A/ W2 k5 R0 h4 o
' H9 A" g* O# S B& q- da = (g) => {//底图绘制+ E6 K. J" K' p4 o( R5 y
- g.setColor(Color.BLACK);
9 o( {* | l2 g! C/ \5 ?4 f - g.fillRect(0, 0, 400, 400);1 g( {' E R. K8 q" Q B$ ?( \
- }# P5 u1 B* ^9 c8 u% Q
- / V8 N- G, j3 L$ m6 Z
- db = (g) => {//上层绘制
8 a4 ^# p) M& m5 f. F - g.setColor(Color.WHITE);, H% @5 W' T& F& g3 P
- g.fillRect(0, 0, 400, 400);, ? U" R. D' \" ?
- g.setColor(Color.RED);
2 e) T; Q% C( y - g.setFont(font0);
5 k8 K. N3 }; L. J. q7 t - let str = "晴纱是男娘";
' \3 p* T4 {# c. a6 W; P) K - let ww = 400;
: }( b6 \8 D4 j) w' X1 x$ y3 c2 u - let w = getW(str, font0);0 p/ m9 \, [, Z3 m g% j
- g.drawString(str, ww / 2 - w / 2, 200);2 U: c% k8 m, G0 g" G" K
- }
, ^ D& R) D3 x; P) b
+ g$ s' R' |* `3 d- u* c- _! p% V- const mat = new Matrices();
9 R" j. w$ @8 @1 f" F$ V - mat.translate(0, 0.5, 0);$ r7 ]* ~' _! L, J
- % Q4 ^3 G, Q% n
- function create(ctx, state, entity) {
o2 Q% R- X9 o6 t' d5 [+ U$ ]" ` - let info = {/ f6 |9 r. I; ?. O
- ctx: ctx,$ G" j' h6 t9 x E' J7 y
- isTrain: false,
4 u- Z! J5 _5 E: ~2 y* W - matrices: [mat],; m) o! L0 I% g/ z+ E/ @! a
- texture: [400, 400],7 W- k' I* k4 H. C
- model: {
' |$ q8 A* T( H; _: d- A; N9 F - renderType: "light",3 ?! ]: [, v: B
- size: [1, 1],
: e: H1 J, a, y5 O: A+ i! P - uvSize: [1, 1]
9 m; X5 v6 B+ E- @ u% m - }& G! _& [, z) w! x H& }, x4 h) }
- }
+ _2 T% f; f. \* ~- e - let f = new Face(info);4 B* l3 |8 d: }" A' b
- state.f = f;
- Y+ Y+ t! j8 |; v: I
) X3 x- p( h) Q; g- let t = f.texture;& d4 G+ M% H" @5 m
- let g = t.graphics;
6 |) i* ?" R6 |3 F - state.running = true;) Q8 W9 F+ I, e, ] ~1 ]
- let fps = 24;
$ r! L5 r3 m/ o - da(g);//绘制底图* z8 O! |( T+ \$ [, p* b: u
- t.upload();' H7 `/ ~# w! I0 K! V' w5 B- U4 M
- let k = 0;
# Y0 \ ]' v7 V% q K. \ - let ti = Date.now();- s4 [; {* u! j5 W2 l" S9 `
- let rt = 0;, T* M% j9 a0 H( L+ r: n) \+ b
- smooth = (k, v) => {// 平滑变化
: a9 _ z: x5 T& v& d+ N - if (v > k) return k;
; P( a! D4 F2 E( [# H/ X* k, O - if (k < 0) return 0;
7 _9 e4 M$ F+ r - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;4 F4 U' C2 `) k) I
- }
B9 y. P$ y/ ?* ], c4 d. ` - run = () => {// 新线程( q" z5 @8 l% ~& F8 _
- let id = Thread.currentThread().getId();
?" Z" }3 o/ W# M4 k# E - print("Thread start:" + id);
" ]) _: Y( F$ a) Z6 s - while (state.running) {5 _, Y- B6 l: u& F5 i/ J
- try {: J. y, p. e$ G d! C
- k += (Date.now() - ti) / 1000 * 0.2;, o; D$ r* C) O1 \7 H! I2 }
- ti = Date.now();
+ `4 |$ j/ y; h/ x. \8 m - if (k > 1.5) {1 m) S/ {4 R9 V2 I5 b9 I) m
- k = 0;
( I4 ]7 F7 h/ I3 f6 F5 M' A2 E/ [# z# A - }( g* b: P' d1 W% { ?% R ^
- setComp(g, 1);/ }. i; T9 N3 A" e O9 U
- da(g);
9 g: \2 {" i% f8 J. C, q! W$ t% { - let kk = smooth(1, k);//平滑切换透明度' `4 `% C# A7 `* e$ h$ Z7 d3 \
- setComp(g, kk);9 D+ o# A7 p& z0 {+ m& J
- db(g);+ I9 q9 F9 O0 D2 Z6 t3 ^
- t.upload();
1 d/ J2 l) M! ~5 D; U - ctx.setDebugInfo("rt" ,Date.now() - ti);* G ~4 F0 y% O" U
- ctx.setDebugInfo("k", k);
8 J Y6 C, a- E7 y4 ^ f8 [: J9 l - ctx.setDebugInfo("sm", kk);4 J- M! B P) C7 M B3 a& S r/ f
- rt = Date.now() - ti;
7 Q* \! D4 y1 A' A - Thread.sleep(ck(rt - 1000 / fps));
$ j" p2 \) l+ E, L - ctx.setDebugInfo("error", 0)9 H7 Y9 w5 f4 |/ o& P+ S
- } catch (e) {
- v+ b/ X5 a/ m5 o9 S - ctx.setDebugInfo("error", e);4 K) [ ?- Y) Y* ^) j( Q
- }# A4 W' P+ M$ b3 K$ Z6 e
- }
! }2 k: j2 _; n; f - print("Thread end:" + id);
* U U6 D8 m- P% c- d- f - }
0 p: j/ E: Q5 K - let th = new Thread(run, "qiehuan");
; M3 r- r; r* U! ^% W - th.start();
; g# ~: c2 w" C9 y - }
/ x+ @5 x- c# D6 ? Q0 W7 P- r5 Y5 u
6 t- x3 B/ x7 t- function render(ctx, state, entity) {
% d& M8 c3 d& f7 V) p' k - state.f.tick();+ t2 y; G0 r; b: T4 u3 A7 s
- }
. b8 D! }+ {+ n8 k6 H
3 @1 r/ A! o+ ?, W$ F2 ^- function dispose(ctx, state, entity) {
" }1 t0 u# r" v% f% ?! ^ - print("Dispose");
7 P# c) `2 \& f1 A, j - state.running = false;
8 @& W) P$ z' N' a - state.f.close();! F$ z- x8 d+ ~6 K# p3 q
- }
1 Q8 Q0 ~, C/ @4 u& P
6 X# l: L0 x% a. n- function setComp(g, value) {
# o6 t( f7 I& I, j - g.setComposite(AlphaComposite.SrcOver.derive(value));
- A% U2 h5 T5 f3 S: c - }
复制代码 8 I6 Z2 J( Q1 r) U) c. R
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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7 S4 F$ v B Y# j# H5 X0 `+ A' ~2 ^" E% k9 o( u4 m
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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