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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。# T0 `( l' Z4 V2 G1 p
- importPackage (java.lang);* _9 |. G8 W! B/ k+ ^9 C
- importPackage (java.awt);
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1 _# r/ Y ~) d7 H. f% n- include(Resources.id("mtrsteamloco:library/code/face.js"));
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- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);8 c% S4 E% ~6 ?1 P/ w
. ?- X) v, `4 x* S' I1 D- function getW(str, font) {
& d; x ]. z; M2 x - let frc = Resources.getFontRenderContext();+ {& q- g8 L% g3 o8 U( E7 D
- bounds = font.getStringBounds(str, frc);
# H. B8 l! r7 m; ~8 e& J/ Y - return Math.ceil(bounds.getWidth());- b/ X# I( O3 v: g9 h
- }
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- da = (g) => {//底图绘制
% T4 L3 m% H( t: _. r - g.setColor(Color.BLACK); N5 a2 |' o6 Y8 D9 t% _, a4 \2 x
- g.fillRect(0, 0, 400, 400);' k+ x! b' @! E* x9 ]) i
- }
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9 }' k E1 ^3 p- db = (g) => {//上层绘制
7 q- E: Y* I9 V7 A% P* U5 L - g.setColor(Color.WHITE);
6 d6 q3 ~$ a' v2 f - g.fillRect(0, 0, 400, 400);( d: B" \5 y) L( W' E
- g.setColor(Color.RED);
: _ W7 \: m# P! L3 a6 u$ W2 G' B - g.setFont(font0);
9 G( N6 b7 J# S% ^ - let str = "晴纱是男娘";
1 Y. S1 v/ F- K# ^ - let ww = 400; P0 a6 v1 W4 {+ Q% j
- let w = getW(str, font0);, K) F) [8 f+ K5 }$ \0 ]+ E& ?$ A
- g.drawString(str, ww / 2 - w / 2, 200);
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- / \; X# y9 l! k0 E" o
- const mat = new Matrices();( v2 y8 ^( |$ J3 k" R. P% d
- mat.translate(0, 0.5, 0);' c6 G% @# Z/ H9 B/ l: J
- c/ f5 v* D8 M
- function create(ctx, state, entity) {$ I' O) v. r2 C l$ }; |1 E6 Q- W
- let info = {
( N* P; e% u! m6 B - ctx: ctx,
4 w* O7 y5 A- \0 ^( v! E. u - isTrain: false,
' H- Q: H# w9 N - matrices: [mat], n4 P# ~! w8 y& @6 y: [& g! R) [
- texture: [400, 400],4 P. n! B* F4 N1 r' ?' w
- model: {& V2 V8 ^/ e2 m
- renderType: "light",
7 C# F) w. }& ]' ^/ L7 c5 ] - size: [1, 1],
* T, b6 H0 q+ | - uvSize: [1, 1]
+ k9 e% M" O- A% Q( h% a4 \7 M - }
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- let f = new Face(info);1 O4 T& ^4 g/ m; {- O
- state.f = f;& b! \. b, F$ B3 f* {5 ^( A$ F
- - j. ]( Z; m3 K- f- G
- let t = f.texture;
* G4 z- k0 A+ _9 W - let g = t.graphics;
' s$ q) r/ b5 {2 c0 B; O - state.running = true;* l6 U9 K7 O4 C& V9 l. k
- let fps = 24;( O* F6 b3 @ |0 B& k
- da(g);//绘制底图
" Q& s y2 n8 X$ b1 P - t.upload();
4 \7 m9 c3 n. t/ H; u# Y3 C6 v4 g - let k = 0;: i0 Z$ R) O+ l: q- n' l, d
- let ti = Date.now();7 s) T1 g9 R% [6 s: D: C$ d1 @
- let rt = 0;0 g) Q0 b- m7 W
- smooth = (k, v) => {// 平滑变化
1 p4 U$ @- r; P: f" \ - if (v > k) return k;' w) U" Y/ r5 ?
- if (k < 0) return 0;# k* S/ D6 |% G( B. C% W
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;! ]2 e& }6 _, r4 M. R9 O
- }0 m$ b% z, m. L7 a5 D3 i: k9 O
- run = () => {// 新线程7 H/ J- ]6 p6 ?, Y4 }1 i
- let id = Thread.currentThread().getId();
! T: k! H! c: Q m5 Q) ?, k$ C' ? - print("Thread start:" + id);
5 z k# a7 ]7 S' m. k - while (state.running) {
) c- L+ C: v" A/ n* r - try {9 r2 i0 p* |5 C' W* g; P0 m
- k += (Date.now() - ti) / 1000 * 0.2;
5 q5 a+ o3 N& {: `6 ]; k - ti = Date.now();
/ n: N2 X9 }/ S" x. p! m+ P7 L - if (k > 1.5) {6 Z* a$ ~4 r$ B+ A3 ^/ q' D0 v
- k = 0;
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- setComp(g, 1);/ Y4 T/ D& v, ~& i8 L/ k% L
- da(g);6 t$ L# g. g" _
- let kk = smooth(1, k);//平滑切换透明度! j% W( U8 S3 p0 D) d' P6 [ N" ^
- setComp(g, kk);' M# b e' H" r& f
- db(g);, J$ E2 K+ {4 @& K; _
- t.upload();6 F F' N( ^! w
- ctx.setDebugInfo("rt" ,Date.now() - ti);9 t: `8 I8 g$ B$ P4 {% V
- ctx.setDebugInfo("k", k);( w- A, p) h; M1 {9 H3 B
- ctx.setDebugInfo("sm", kk);
9 o% z6 c( |9 r5 w* E6 \2 M( V% t - rt = Date.now() - ti;
p+ b2 r( q/ g) a# C* Z - Thread.sleep(ck(rt - 1000 / fps));7 g) V- ], [2 x3 q3 m0 b
- ctx.setDebugInfo("error", 0)
) q; p' `3 ~' z9 z. i ~6 q - } catch (e) {
4 C, ~4 [! S7 T - ctx.setDebugInfo("error", e);: L5 `$ N. x1 s& o
- }+ G9 Q1 ~# }1 J) ^ t
- }
# ?4 n' P* r% X) s# D. E - print("Thread end:" + id);2 m( V4 _0 b2 E4 ^* a% ]
- }' L, Q* g2 y! E
- let th = new Thread(run, "qiehuan");6 b7 t6 d6 ^! S( f( c9 }7 \
- th.start();# g: X3 T4 N; W4 s; Q
- }
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5 V+ W8 H% Q P: x9 e2 G- function render(ctx, state, entity) {0 x) f6 s% C. {) e
- state.f.tick();- y3 T- V* s" _
- }
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, y# d n8 B4 H9 d/ {, @- function dispose(ctx, state, entity) {
+ ?9 `2 V' R9 k+ r' U - print("Dispose"); X0 G, A+ g, j
- state.running = false;6 h. a& L" b; p0 G* v
- state.f.close();
' V w) l# c7 `) }4 W - }
- i8 B2 ~3 s( s5 y3 I! |6 A - ! J3 T- J; N0 ?" M/ y% [
- function setComp(g, value) {2 S# F& k3 \* g6 p
- g.setComposite(AlphaComposite.SrcOver.derive(value));6 D8 R8 M; q- Z1 h
- }
复制代码 2 w4 d1 T. m% f3 G) S
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。3 L3 q! Y% z4 U p/ ^2 }
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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) N9 I- N# r8 N8 U* Z
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