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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。' u7 W& W& |- M6 y" Z3 a! W3 g
- importPackage (java.lang);5 M2 M* Q1 o0 E, p
- importPackage (java.awt);
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/ F v( |6 W5 `+ `2 m' s: p" y7 w- include(Resources.id("mtrsteamloco:library/code/face.js"));
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- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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- function getW(str, font) {
2 s4 n. A* `9 ]# @+ b: Z - let frc = Resources.getFontRenderContext();# ?& T) M, e$ y+ l- M
- bounds = font.getStringBounds(str, frc);+ f/ V! C6 {5 k) I$ O
- return Math.ceil(bounds.getWidth());/ @3 [$ ^& J5 u: U7 j
- }
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9 s2 @5 }0 L6 ^; i* y6 J- da = (g) => {//底图绘制
2 \2 u1 k2 P* M - g.setColor(Color.BLACK);
7 g8 T( e! e1 K( Q# K9 M2 \ - g.fillRect(0, 0, 400, 400);
: p8 K$ G& X' I: k+ ~ - }
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- db = (g) => {//上层绘制1 g! s0 S3 }2 j! v
- g.setColor(Color.WHITE);! M9 k7 Y/ V$ ?( g( q
- g.fillRect(0, 0, 400, 400);
9 E6 |" p7 n0 o. p4 N; v1 c. u w - g.setColor(Color.RED);
2 m Z5 R! j( ?/ T: y& r* B! M* x - g.setFont(font0);
, I1 [( ]$ @2 C0 Y0 R* S - let str = "晴纱是男娘";
& l. m$ s: I: s z, r - let ww = 400;
) n/ x [+ Y6 `( U2 ?! R - let w = getW(str, font0);
: e8 f! d6 D- c& n# z4 c - g.drawString(str, ww / 2 - w / 2, 200);0 c* o7 j. u& Q2 O% z& u' w; ]
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9 \+ @7 Y9 i% y: c, j6 ~- const mat = new Matrices();4 g1 Q% G. e6 Z+ W" R4 o, C& |
- mat.translate(0, 0.5, 0);" `$ Q2 f0 @8 G2 b0 g
" C5 P! M0 o- E; E( m% g- function create(ctx, state, entity) {. n5 @$ S0 T. z9 A) ?7 w& B# Y
- let info = {
" A* d! }2 Y% t/ B% ?' |; _: ~ - ctx: ctx,
/ N2 B6 o: d U) P" } - isTrain: false,
/ I: T% r0 m% n; C - matrices: [mat],' A c% ^) a |: t& X
- texture: [400, 400],
/ b* U2 a V( ~" |! I* d' m% h/ s - model: {$ Q: \) D: p" x! C$ Q$ v
- renderType: "light",3 m- G' j. R p" h" g: W( B/ Y$ [
- size: [1, 1],
+ z( s; w2 b+ x: M - uvSize: [1, 1]8 q; X8 e% u- B# a0 v4 |+ V& @
- }
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- let f = new Face(info);
( v$ c6 w: J* L - state.f = f;. b2 C5 b$ b z
; w' Z2 q" K$ ]/ }5 d1 V9 ^( A- let t = f.texture;' a7 U+ L1 [2 x: V8 B# A7 o( D- V
- let g = t.graphics;
, E. g' A# Y, W/ Z7 Z - state.running = true;
! Y' W2 j; r4 c c - let fps = 24;" A: n* y9 k3 U3 T+ Q! A2 C7 l- c
- da(g);//绘制底图
4 ]! M$ m6 x N" ^. t/ C - t.upload();4 O4 x0 e7 w/ T8 I
- let k = 0;
7 E q+ k& j1 g' I1 M - let ti = Date.now();
, a# r/ D2 ^: G2 } - let rt = 0;4 ~3 I! l# C9 q; b2 l
- smooth = (k, v) => {// 平滑变化
* E+ \. V# }4 K. W& y - if (v > k) return k;5 s+ F5 x. {* S( l+ ]2 l) c
- if (k < 0) return 0;
1 K A& Z# S- y; K - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
8 Z0 ~3 p8 S2 S1 T - }
3 V; X+ S! w# m% A1 | - run = () => {// 新线程/ _9 I$ ^7 B ?
- let id = Thread.currentThread().getId();3 E' ]$ p& ?: k
- print("Thread start:" + id);& r7 o6 y E8 D; d0 @; p
- while (state.running) {; @9 l. u3 `! i8 b0 e" c% {! _
- try {7 P: a# Q9 O9 W3 p e
- k += (Date.now() - ti) / 1000 * 0.2;% H2 ~( Z1 @* f: }& F
- ti = Date.now();5 K; x. n$ ]3 E( {
- if (k > 1.5) {
' Z* F# U& A' ]: W* W& O& p - k = 0;' s8 b9 e2 i8 { m; l+ N; E$ E
- }( \1 ` A4 G( Z! R# `
- setComp(g, 1);8 ]% ^1 ?2 m9 m& I2 w+ }) M
- da(g);2 c0 Z$ |5 J4 [$ s5 [
- let kk = smooth(1, k);//平滑切换透明度
. ]; M! v( s2 z4 q - setComp(g, kk);6 O9 ] E3 s8 d, i
- db(g);
) e4 o* \; U+ E) }" { - t.upload();
, U! V+ b# Y- `: K% _ - ctx.setDebugInfo("rt" ,Date.now() - ti);
. J- A3 _6 k( W+ F - ctx.setDebugInfo("k", k);
/ T! P4 a: W: g - ctx.setDebugInfo("sm", kk);
# l' m* A* u; p; Q, f7 h - rt = Date.now() - ti;) q' l v) t$ V5 g3 r
- Thread.sleep(ck(rt - 1000 / fps));" C8 j' }4 T& T: e' O+ M" _8 w
- ctx.setDebugInfo("error", 0)1 B1 g1 ~! d- w
- } catch (e) {) U4 u1 \5 C) Y* q1 C
- ctx.setDebugInfo("error", e);
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- }4 P& F" E0 p* v- I5 R: @
- print("Thread end:" + id);8 S% c8 |% ~% f7 c( \% @. F4 t5 s. N
- }
) H% H9 ^, x+ O - let th = new Thread(run, "qiehuan");. G r5 |! S5 f' h+ b
- th.start();5 k( P2 h. N1 R- B% m' K N" C
- }4 R; [4 Q) n# T9 O& O
- 1 X. d0 \% W. L7 O
- function render(ctx, state, entity) {8 e; A& ^/ N6 Y3 d
- state.f.tick();
|1 |( b( j" d - }
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- function dispose(ctx, state, entity) {4 B# A, t2 s" o, p8 v8 ^! @; J
- print("Dispose");, X* e: P4 D3 X; F# d
- state.running = false;2 o2 w0 |6 r) v4 q+ _
- state.f.close();/ H$ L: r' O- @! w8 a
- }0 Z. n, S4 \& \: ^% r- d
- , O6 m3 x4 e, u# s5 L1 r7 q
- function setComp(g, value) {
0 I3 }4 a O* B/ P; M - g.setComposite(AlphaComposite.SrcOver.derive(value));
0 o* J7 B5 G4 ]; {7 d: k* u - }
复制代码
+ o% B1 Q4 r. g0 l# b$ P% L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。( W& O" r, o$ o5 ]7 {
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1 J8 v: `% R9 r& C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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