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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。4 l% V/ [! t7 b+ h8 [0 l" f
- importPackage (java.lang);
. @2 } }, V w ^! R - importPackage (java.awt);
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/ H. J5 j5 c8 b2 @+ u( v- include(Resources.id("mtrsteamloco:library/code/face.js"));7 A2 @% q% Y2 m( O
- , i; y' b4 s2 o3 T% m: @* ?
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);( t) G: ~: a8 e. j1 u1 x2 e2 W
- + w/ g+ s& \- ~9 v# A
- function getW(str, font) {2 t9 V" E9 k" H- l( A6 D2 D
- let frc = Resources.getFontRenderContext();
4 }5 W8 q4 K( X s. l - bounds = font.getStringBounds(str, frc);4 f: [1 l) n2 \) u2 T( ~
- return Math.ceil(bounds.getWidth());9 z& y" K9 a8 T% G4 g+ y
- }- h6 J* R# i# S# ^! d
- 3 q) [% l. \1 m# s( M) n
- da = (g) => {//底图绘制6 ^5 a- z9 v6 k- f7 n1 N
- g.setColor(Color.BLACK);6 `! q, f2 ?1 B. b
- g.fillRect(0, 0, 400, 400);
, Y3 }: A: I8 ~9 R" s, M: f, M4 ` - }
9 Z e" c2 l& c. M6 o
/ m v4 ~. F6 @5 j- db = (g) => {//上层绘制% s P- z7 f% A
- g.setColor(Color.WHITE);7 U; ~/ n+ n9 ?+ @
- g.fillRect(0, 0, 400, 400);6 ?8 l" `1 J+ w. x5 o! [& Q
- g.setColor(Color.RED);7 g8 o: X5 h' _: N% s9 W4 m
- g.setFont(font0);. W9 o5 l4 I+ s
- let str = "晴纱是男娘";- b' r% j1 g' L) \: |
- let ww = 400;. q* l" L3 Y9 Q7 e, K3 j
- let w = getW(str, font0);, N0 T; [! C- o
- g.drawString(str, ww / 2 - w / 2, 200);
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2 r" |: i5 i9 F- H6 t- B0 t- const mat = new Matrices();; d/ d |9 Y' x6 @% |
- mat.translate(0, 0.5, 0);, A2 u+ R j6 _5 [
- 3 D% z$ g- }. M3 K1 j$ w
- function create(ctx, state, entity) {
3 ~0 j" Q3 E6 r1 w+ h V/ |# A - let info = {0 a. ~0 x- T O: F3 ]
- ctx: ctx," c2 s- [6 E) Q
- isTrain: false,
: O; l- p* `: D1 {# d - matrices: [mat],
* O9 C. K# X; x* L5 G( G/ n - texture: [400, 400],
* m, }. p0 r. h2 V6 x - model: {
1 x& n# ^' t9 K5 L# u" `# Y2 O6 f - renderType: "light",& y( ]9 Q) V% a1 j# E
- size: [1, 1],
& c h& S* |. \ `% Y - uvSize: [1, 1]) {& v$ P0 g# `$ s( Y- L
- }
$ I, x3 e. C' ^; B8 \* D - }. g7 i* W5 t% \+ b) @2 e- h/ M- X8 ]
- let f = new Face(info);
M# k( t- [1 G& T - state.f = f;
; G1 n5 H6 ?9 y
" }4 u* F9 z4 h- let t = f.texture;
0 r- z1 E K: V3 E0 l& N - let g = t.graphics;
, z. N7 ?4 n6 V. g+ { - state.running = true;$ d& o/ \* V' _ W
- let fps = 24;* z8 I( o; H# e q$ B
- da(g);//绘制底图2 T: N# W4 ~# d" q
- t.upload();
( K8 e5 |# x1 @& ?( [' F - let k = 0;
! y7 i/ A) c( Q- e - let ti = Date.now();+ k, ]. f2 V' ]7 F: p
- let rt = 0;! c8 u8 d0 w- l9 z5 M! C5 i
- smooth = (k, v) => {// 平滑变化: Q! Y) Q+ w U
- if (v > k) return k;+ f: F) a+ p$ {0 J' y
- if (k < 0) return 0;3 q9 S7 Y# m- \ X8 B
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;! m# ^6 ~- m' ^" l. G
- }% t1 w2 ~- X ~( S4 ~" i9 c
- run = () => {// 新线程 h4 B) L( Y' @
- let id = Thread.currentThread().getId();
/ C+ Q8 G8 A9 Z" |3 v - print("Thread start:" + id);
" d7 h* F/ X2 {; ?6 h/ e2 {6 Q - while (state.running) {8 |' Z0 [; x; ^7 O
- try {: K4 y7 ~8 b, c. [2 s) n4 \8 |, u
- k += (Date.now() - ti) / 1000 * 0.2;) N z9 r5 V* e1 E2 ~
- ti = Date.now();! ?+ N- G2 e/ @
- if (k > 1.5) {
8 _' ?8 S! t8 ~' ~9 b0 g0 K, | - k = 0;
$ ~) }/ K2 o; _6 d - }8 ]8 Q6 N5 y& X0 b! u# w6 T8 g
- setComp(g, 1);
9 Z3 h8 _2 n% [6 A+ ^# @ - da(g);) z+ S' w& z1 Q1 c$ n6 c
- let kk = smooth(1, k);//平滑切换透明度6 y' U3 o; H' g" F
- setComp(g, kk);
. f1 X/ _9 S) V, V& M - db(g);9 b( L' z4 ]/ L9 \* P( w0 r
- t.upload();
0 o& B+ [, L0 R - ctx.setDebugInfo("rt" ,Date.now() - ti);3 R" X8 E) ~; A: d; ^1 I" ^5 N; }
- ctx.setDebugInfo("k", k);) B9 X, h3 {& J: |* ~) b
- ctx.setDebugInfo("sm", kk);6 Y- j7 R0 i7 d1 c+ z2 b/ r7 E
- rt = Date.now() - ti;
& n! @" ^5 W" Q2 ^1 G9 M% R - Thread.sleep(ck(rt - 1000 / fps));
/ v% ]: @5 e n- m1 | w% W6 K/ u - ctx.setDebugInfo("error", 0)
% i- w' d0 C% m3 y) _8 [ - } catch (e) {! B6 E' Q! N( e3 c% h
- ctx.setDebugInfo("error", e);, V( p6 k/ Z, p" z Q
- }
- D2 _: y, _, g% Q- j4 k7 `4 R - }
8 C7 d. W4 c3 m$ s# Y) h ]/ H - print("Thread end:" + id);
* p# |/ _# H% c' y - }
2 {- L6 n z( ~/ M& _ - let th = new Thread(run, "qiehuan");
+ Q6 E8 w1 b8 Y3 k - th.start();
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9 Q2 f9 P5 \0 ~. J$ }5 [5 i- function render(ctx, state, entity) {
0 s+ L/ P2 U3 j! A( z% e5 S | - state.f.tick();
# D8 K. d& Y7 K - }
- J8 t/ Y& V1 n+ } e) \
% b1 {1 ?9 Y6 `. C; c8 v- function dispose(ctx, state, entity) {1 J0 ^+ E2 t9 |8 B/ x5 P$ U: u
- print("Dispose");
' n4 p* Z" Q' V R; w - state.running = false;
7 w5 ^$ |/ d4 V! q6 O; C" | - state.f.close();$ K3 x" }, a7 z, V) `. U
- }
7 s# _ I7 I4 ]- h! A" ^% Y3 y0 i" Y - 8 A6 e6 ?* Z4 Q; Y
- function setComp(g, value) {
' q3 d. s3 f( p1 c( G) \ - g.setComposite(AlphaComposite.SrcOver.derive(value));
5 A/ n2 t9 \! E - }
复制代码
) S$ G+ V$ p3 g 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。
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& W1 P/ K* J: @* W1 p% k8 A 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)& f# k: y0 h' ^
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