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+ Z; z8 h$ @- b: c" \1 R+ B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。 S, S, B9 p: f! x9 L% s
- importPackage (java.lang);8 w. a; j/ U; \; Q2 \1 r7 h
- importPackage (java.awt);1 g% t9 m2 o# | O: J, f1 {
k$ d, t; T' `- include(Resources.id("mtrsteamloco:library/code/face.js"));) F/ X) l j j* P O
- 9 s. V5 T8 k5 Y, K6 t" ^( u
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);: K: D' d' o1 O- L% z3 j. p. _
% Y% C: G7 A" p3 G; ?1 R7 \9 }- function getW(str, font) {6 K) A5 `5 r, n p9 @
- let frc = Resources.getFontRenderContext();
6 p# a" p( B0 P' u- T. O$ d - bounds = font.getStringBounds(str, frc);8 H1 ]% A% W3 _. |9 W1 b
- return Math.ceil(bounds.getWidth());/ N) G2 d2 g1 m8 l' \9 |
- }
9 R. i8 y; w9 q4 D. {3 d0 j - ; a$ P+ N5 u3 U ]
- da = (g) => {//底图绘制* ]1 v7 y, M: |- F( Z
- g.setColor(Color.BLACK);
, W" a2 o, D- y2 b( R - g.fillRect(0, 0, 400, 400);- i9 L. Z' ~+ f( M4 S$ q2 r
- }) G/ P5 Z/ n% F' ?: n' f7 K
! ?! N8 Y7 M0 m) }+ T- db = (g) => {//上层绘制8 @5 m7 Z. d9 [4 }) x/ k% R* i$ d4 T9 n
- g.setColor(Color.WHITE);7 B% I/ |; _4 u0 l% x! `7 B
- g.fillRect(0, 0, 400, 400);
( g: n) m2 {8 ?7 x9 G" A. g6 S - g.setColor(Color.RED);
9 |; x# z, [0 p - g.setFont(font0);
3 H$ U6 l5 W) r! z7 n- K$ h* Y( v - let str = "晴纱是男娘";0 e" R$ \6 s) U3 w, [; d
- let ww = 400;
* _' C& k7 m: S- ~$ x - let w = getW(str, font0);
" A! B9 a1 m8 s+ l: R6 o - g.drawString(str, ww / 2 - w / 2, 200);; N1 ~5 I2 X# Y
- }5 o* t" ?. q8 c' {! d& u
- ' s/ }* V" F, t. N
- const mat = new Matrices();
" S7 J; S) S! S2 R& ^4 }0 e* y# ?4 e% l - mat.translate(0, 0.5, 0);2 K% l0 s$ U; l1 m4 v# ~8 w
- 0 A9 l2 _, K/ [% q/ F( m
- function create(ctx, state, entity) {0 o+ t; B& d( @5 y9 a7 i
- let info = { `% }: V8 Q5 V: l: Y; } ?& H) {
- ctx: ctx,+ _/ p& |% d' s" X) }
- isTrain: false,; D2 s( `& \/ X! x: R# b7 h
- matrices: [mat],
/ L7 i1 `8 \$ W0 {: L' T - texture: [400, 400]," B0 t. d7 |0 Z2 ~1 |6 v d
- model: {
2 Q0 w. ]2 V- }+ O6 B: I) ? - renderType: "light",
6 ~2 V E1 [4 V - size: [1, 1],6 ]+ D5 S p, G4 j1 \: ~( @, e5 B
- uvSize: [1, 1]
' O5 p! [6 |% R9 G8 K - }: @4 X$ \7 s4 ]3 E" b0 E. V
- }
6 g. q% K3 [2 R, J9 ?$ G) `$ M/ e - let f = new Face(info);
7 l: U* h$ N6 z/ l- C% ` - state.f = f;$ Y- h0 c2 h0 t3 B9 ~
- ' X1 d3 Z$ Q! X( D) m
- let t = f.texture;
- @) u& ]6 Y4 R" ] - let g = t.graphics;8 @9 u% M# [* l t
- state.running = true;1 s8 u# S* h7 l. j9 }
- let fps = 24;+ K( @) i" m' Z( R4 P2 J
- da(g);//绘制底图( t! R! o- j c
- t.upload();. l+ V) O' a" h) w, i2 V
- let k = 0;, x {( Y7 q3 y" P7 o; t$ u
- let ti = Date.now();
$ i) v+ H% ~5 t" z* y - let rt = 0;9 f9 `) I6 R+ }2 Q. m* B+ Z7 y) ?
- smooth = (k, v) => {// 平滑变化
" e5 k6 J' |; y - if (v > k) return k;
+ N2 C# n% ^8 i5 \ - if (k < 0) return 0;
/ V- @0 S6 b1 v }8 z4 I( e - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
: x+ S1 Y1 o, m9 b {7 c - }7 {$ s& V! c! b/ [5 Z
- run = () => {// 新线程& h! w5 U% [. G0 I! W" K
- let id = Thread.currentThread().getId();
( o2 X: F- J4 Y. k - print("Thread start:" + id);0 L% }% q; |: }1 G
- while (state.running) {9 l: ~: K$ ` m
- try {6 x- v4 [( l6 q6 Z
- k += (Date.now() - ti) / 1000 * 0.2;
9 W" {) k3 I+ j; W6 i, U( _ - ti = Date.now();# V" }2 u1 C5 w9 i
- if (k > 1.5) {
3 R8 b3 Y; Z7 w, Y6 P9 r - k = 0;
l% }. `* ?0 J& |0 a* {8 |0 C - }
& W% C9 X" t8 j& Z - setComp(g, 1);, a0 ?' d) m' a* O: A9 Q
- da(g);' k2 n2 {( R- ?
- let kk = smooth(1, k);//平滑切换透明度
/ W( \7 k; I9 }2 @6 H; R* k, } - setComp(g, kk);/ e" y& f8 `3 e2 x
- db(g);6 A) S ]1 z0 ~9 C8 e
- t.upload();
l5 h9 r. W' R8 k - ctx.setDebugInfo("rt" ,Date.now() - ti);7 W* G1 M J4 O1 }; j7 l5 w, ]
- ctx.setDebugInfo("k", k);4 ~( V6 |; N7 c" V4 l
- ctx.setDebugInfo("sm", kk);
' [) b7 K2 b: T3 J) i/ b* | - rt = Date.now() - ti;
: d' ^" M U2 r1 M - Thread.sleep(ck(rt - 1000 / fps));
3 |) z ^+ g( |( g2 G - ctx.setDebugInfo("error", 0)
% i& d* C" K, s* H2 c - } catch (e) {
( [) V! z9 ?9 l. H - ctx.setDebugInfo("error", e);" q3 j7 j2 @. ^. C" a: d
- }
6 E! [* L* W& {% r, x1 |7 Z - }6 N6 i$ F- d2 U4 g- U* R
- print("Thread end:" + id);7 m. j! c+ p+ D; {
- }3 w/ w( j. R& V7 P9 g3 `4 v
- let th = new Thread(run, "qiehuan");
6 Q+ {. f1 p9 p/ ] - th.start();
5 s1 L! {5 z% w) { - }2 H& Q. F4 x7 L
; T7 F% s7 c$ `7 r$ }2 o- function render(ctx, state, entity) {+ i$ ~& X3 F# s$ ~2 c2 v$ e
- state.f.tick();$ d v# a$ W7 T" d: q# s
- }7 x7 i% F* \ D8 M1 S
- 4 Q+ ~+ Z. Q6 k. g* D$ O9 v2 G+ @
- function dispose(ctx, state, entity) {
8 ?4 i, O( I# m9 b% k+ Q# @/ E - print("Dispose");
5 i8 ]/ p0 I1 _' {, [! ] - state.running = false;" b* Q) c. m+ a R
- state.f.close();3 U( Z3 B, q6 x- L
- }
; s' w- k! E, V* L/ V+ m7 L. Q - ( k$ B( A# b* y6 V/ q) u2 l
- function setComp(g, value) {
5 ^8 N) k3 e- |: q( B8 \/ { - g.setComposite(AlphaComposite.SrcOver.derive(value));
3 [/ F7 X$ @$ H3 X - }
复制代码
O* \' o9 c: z6 `9 N6 R8 Y( k. D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。 \1 }9 J, `+ I
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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)/ I- f" A" ]4 }. a @
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