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7 G8 l! q* o! Q, S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。
" }- h% {' p! f0 [2 u A4 i1 k! n- importPackage (java.lang);
+ B1 ^, ~3 }. W; G- v( k& b: h - importPackage (java.awt);
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9 \* X0 s3 @; [$ B- include(Resources.id("mtrsteamloco:library/code/face.js"));9 m. P" U. u* g0 y' J/ b# S) l
- . O$ C$ r! l1 Y6 ~
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);6 T2 w# r- K9 l8 E8 y' u
- ' `3 k7 Y" Q7 ?) H3 K
- function getW(str, font) {. i4 f/ o5 N9 Z: ?% s
- let frc = Resources.getFontRenderContext();- |- f. A3 E- `' @( @7 r2 s+ B
- bounds = font.getStringBounds(str, frc);3 [4 Q8 K8 M5 w% o7 E7 y
- return Math.ceil(bounds.getWidth());
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" x5 C$ j, k3 a; }0 T6 U- da = (g) => {//底图绘制- X6 N3 X2 Q: ?. n+ N0 E% g) ]$ D
- g.setColor(Color.BLACK);
! f% B) C- B# k8 s! ~+ h - g.fillRect(0, 0, 400, 400);/ V+ t, O; c5 d3 u) W; f, W
- }
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/ g+ i7 F1 c; u- db = (g) => {//上层绘制* T/ Y6 }6 J4 g. S" w! z4 v# H4 e
- g.setColor(Color.WHITE);
6 Q, f/ _( @2 ~! u& ]( K5 f - g.fillRect(0, 0, 400, 400);
9 n' S3 R F+ N0 h - g.setColor(Color.RED);
5 V. H$ C, X2 N; h, r2 m - g.setFont(font0);
# _: P h7 A9 F; m( e - let str = "晴纱是男娘";! X$ p R' P3 ~% H; [
- let ww = 400;
1 ], r0 s8 t1 a! ]6 L' g5 M- r - let w = getW(str, font0);
4 K7 A& j% t0 l& \ E8 }) | - g.drawString(str, ww / 2 - w / 2, 200);
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- 8 r. c+ q" H$ x; T4 ^% k
- const mat = new Matrices();0 ]) O {0 [6 Z' y! D) w& v
- mat.translate(0, 0.5, 0);+ V2 W6 Z8 z* |7 U8 m
- 8 N2 G7 Z% V' m6 p9 B/ R- b2 Q
- function create(ctx, state, entity) {
7 A- k, `5 U/ _* B$ N. ~# ] - let info = {- y# y# Q3 y" k4 U) O
- ctx: ctx,
% ?3 [7 _$ G- s8 l) ]& ^" R& U - isTrain: false,
: Y* T b4 g, w% ` v: d9 M - matrices: [mat],
! r: G( D7 L- R6 G2 L* q1 Y% I - texture: [400, 400],! Q7 g8 ~5 d& Y g6 `3 a0 O+ {
- model: {
4 B! C Z/ y- }1 q8 ~( N+ s; R - renderType: "light",
2 `' g8 i4 G7 R* X4 E+ a6 v - size: [1, 1],; q) n2 K8 C9 F$ \% i
- uvSize: [1, 1]- M1 m K# E5 r0 T% {9 t
- }2 d4 k6 G6 ?4 y( m" C
- }
4 a/ c& `1 D; b, ~2 x - let f = new Face(info);* a0 {; @1 U+ @$ z8 Z+ Y$ f( V) o
- state.f = f; _% y( W& M2 P, k
( B' z+ C3 d1 a( F/ ^- let t = f.texture;9 V' m4 b% m% w; a% q" a
- let g = t.graphics;
% ~* ^" ?0 M$ ?& ~ - state.running = true;
3 R: d- i# O2 u- P/ v' Q' B - let fps = 24;
8 m X3 ~1 s) d! @$ c% S- Z; } - da(g);//绘制底图
8 C( ^/ Y/ m5 _ - t.upload();
% y1 {3 e* H4 E0 }0 f/ x4 i" \ - let k = 0;
/ @7 }, d3 j( ]8 \. O# A - let ti = Date.now();7 z0 e& ^6 p }' _% x3 T
- let rt = 0;
8 Y. ~" i* Q% T! `+ B - smooth = (k, v) => {// 平滑变化# y! w- h3 D. |& a8 s! [6 _7 e
- if (v > k) return k;
7 r; M1 z/ G: E, d+ u - if (k < 0) return 0;* ?& i2 U& E- A" K( u, a8 D a
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;- |! k2 D+ I+ Y4 r3 [# x% r6 X
- }1 \$ N, T2 O' g- Z3 S' m) _
- run = () => {// 新线程
" Y& W7 n! E/ |( f - let id = Thread.currentThread().getId();
1 U9 W1 C+ G$ I - print("Thread start:" + id);
$ F2 k4 J0 b3 B k1 S8 l - while (state.running) {
z. Y( A+ d4 G H3 c: g7 ]% W4 p, o - try {
& F# Z1 f; A$ e - k += (Date.now() - ti) / 1000 * 0.2;& _0 U) R' z2 q8 U4 c. z
- ti = Date.now(); l2 k, ^% f" F1 ~" g) {, r
- if (k > 1.5) {
( a' j" G' v, a3 D4 p) G - k = 0;" k6 t+ M% m$ A# Y& {/ k
- }
+ ]/ \& H' |! r% {- B1 i - setComp(g, 1);( J2 [* I/ j5 u8 b6 L! V
- da(g);
6 |# v c9 q* T, ? - let kk = smooth(1, k);//平滑切换透明度& `, [, o7 x, f' l
- setComp(g, kk);
5 B U! E4 h5 L/ K1 z0 n- T4 P - db(g);( H! N7 X) j- |* U2 ^8 p" e& \
- t.upload();2 J; K$ i- O# a5 D& p
- ctx.setDebugInfo("rt" ,Date.now() - ti);
! S, B* |( j7 s7 p( V. j+ W - ctx.setDebugInfo("k", k);
( U( ?. N1 s# ~( u! ] - ctx.setDebugInfo("sm", kk); v/ h. a# X5 {0 [" G8 P# s
- rt = Date.now() - ti;
; w7 f T Y, F/ N# b7 [ - Thread.sleep(ck(rt - 1000 / fps));
- X0 z0 B4 W& L! ^+ I8 o - ctx.setDebugInfo("error", 0)
9 J% W' Y6 x9 `/ Q, g) S4 J' r - } catch (e) {
- Z+ e- G* g, j& @' Q' ~) Z0 ?! N% a - ctx.setDebugInfo("error", e);% O8 E. W' i" X9 T
- }. H+ w2 y" }$ ?2 J' \* r, }
- }: U/ q4 Q0 b. A: U% C; c; q2 Q
- print("Thread end:" + id);
8 S8 n9 h: F1 w7 q4 ] - }; q- W, h1 ~, a4 j" T
- let th = new Thread(run, "qiehuan");6 G/ E" q1 m4 b1 {" Z; f
- th.start();
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- / G; x, {. J4 L$ L8 B
- function render(ctx, state, entity) {" W$ I L7 V6 J# O
- state.f.tick();8 {& @7 R3 f9 \% S' A+ g
- }
4 o5 r8 T4 o/ i: J9 J, X8 L6 r - * R4 k' K. C. _4 [; ]+ D4 J1 K5 {# [
- function dispose(ctx, state, entity) {
9 y* r8 R+ P# n( `+ Y3 l# } - print("Dispose");: z; |: B$ \- M4 Y- s
- state.running = false;+ n. |; R7 v; w7 O
- state.f.close();
- @. m! x' x0 Z& W; o! o2 ~) l - }
5 U. H# R0 E% [6 e - 0 L5 n: I5 p: w! m* M4 f5 b
- function setComp(g, value) {# R, J4 `6 m" f+ A( x
- g.setComposite(AlphaComposite.SrcOver.derive(value));
5 y( S* M% Y) W, { - }
复制代码
2 T$ r8 j6 T2 T' 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。' o/ k$ R4 o7 o6 b5 j; G( S
7 d0 ]9 W8 h$ R
) I8 i" G9 j% Y4 i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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