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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。
) X& o' M) W a Y6 w- importPackage (java.lang);0 F* T9 J- R7 d4 }: l/ m7 a
- importPackage (java.awt);+ n9 j6 L) T7 ^$ h- B, _
- 9 v5 J; I: @4 S: X2 _5 [5 b1 U6 r! b
- include(Resources.id("mtrsteamloco:library/code/face.js"));8 r# L- X- y! d' i9 n$ r0 L- c
- 2 B" G7 C9 @7 S& e' R
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);# T$ Q1 S, {: [+ J6 F
- ' G$ N7 s: Y$ H' H! I& I; T
- function getW(str, font) {( ]: ^! q& n0 c) R5 `1 L( H2 Z
- let frc = Resources.getFontRenderContext();+ d* L5 a. I. e& \& n+ p
- bounds = font.getStringBounds(str, frc);3 [$ l) }1 E, ^# K( Z0 u2 E
- return Math.ceil(bounds.getWidth());' R; r4 H1 S& Q0 g- [' D; a
- }
/ d% k) X* o8 M- h- W
* e& L: u. z K: x1 S* F+ ]$ B7 }( J( p- da = (g) => {//底图绘制
* J! P$ @' K2 v. Z) o - g.setColor(Color.BLACK);& q" j7 y5 X5 x3 y
- g.fillRect(0, 0, 400, 400); V2 Y0 \3 `6 M! j3 X
- }
# ?& P; M% b6 H, S- F# e1 L, O - 7 [( H/ R9 a4 v' m0 \
- db = (g) => {//上层绘制1 g, b8 q" f" e2 p& r5 C' h6 n3 T
- g.setColor(Color.WHITE);
/ [- X7 Q9 V; u! B# J3 p: p - g.fillRect(0, 0, 400, 400);4 P0 }/ s, H5 B
- g.setColor(Color.RED);$ w% W' S; r1 x: z
- g.setFont(font0);% e Q5 M, Z/ O% f' P
- let str = "晴纱是男娘";
9 i, b) z1 ^7 t - let ww = 400;7 s6 P( k2 B2 G" \/ ^
- let w = getW(str, font0);- w5 g& l' b4 A
- g.drawString(str, ww / 2 - w / 2, 200);9 ^# a' Z) H- {5 {. H+ Q" v5 p
- }
$ e+ o) M9 F# ^3 u - 9 P8 |" n# M: \4 ^& S7 a0 U) K3 O3 C
- const mat = new Matrices();# g D9 J) a* _* b0 h0 O
- mat.translate(0, 0.5, 0);7 e, y* E* {* b" O4 i. C' E1 s" m& f+ A
2 C( A9 v& F/ X5 N- function create(ctx, state, entity) {, Y! X) Q) v7 Y
- let info = {
+ V6 Y$ v; j$ P1 F- ~6 Z - ctx: ctx,5 U1 }( p' g) M9 W
- isTrain: false,
+ V" F* C& l4 e. L3 f) i4 k - matrices: [mat],, k: R7 d2 v I% [9 c: t
- texture: [400, 400],3 l! A2 r+ j3 p4 T# S1 S
- model: {' U0 _ G8 W3 B3 J1 N1 B) C. \
- renderType: "light",* b/ G8 A0 x/ \# W4 W; q1 |1 w3 U
- size: [1, 1],
5 L f1 i& Y, i0 e3 f: v9 E - uvSize: [1, 1]! H8 x) g- s" h: [
- }5 G* d2 A% G# m1 ~1 m
- }7 w, \* U6 ?) W/ q6 S0 t6 M) b
- let f = new Face(info);' k1 L% q' A9 u$ {& P8 p: y! D0 ^( {
- state.f = f;" L# O F: n0 t! G: h1 E0 e
- 7 V, v$ q" R4 `! b
- let t = f.texture;8 k9 l% V: k. W/ D- Q& M
- let g = t.graphics;4 V& c* Y$ u3 a- G/ j
- state.running = true;4 J* ~% s) m5 I% m) e% ]8 J: C- w5 b
- let fps = 24;# B$ j* z) u/ R5 l W0 [
- da(g);//绘制底图
- a1 @: q! G5 E" k+ a4 r- W - t.upload();
+ E# l; l( x, t' i - let k = 0;
+ u2 M" x- r7 X" u9 A7 F - let ti = Date.now();
j% ]8 A1 A7 M - let rt = 0;
' W: Y5 M3 m% C: e( Q0 X: C D - smooth = (k, v) => {// 平滑变化
( }$ y1 x; L9 R- l" ^( ] - if (v > k) return k;% b5 J+ A3 y: ^! |1 X- q7 Y4 i
- if (k < 0) return 0;
7 D5 u- j: _% \$ c - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
. ?3 {9 Y* H" ~ - }
. q: d9 M' p- V8 L9 @) Y9 } - run = () => {// 新线程0 A8 v" [' i, _. A$ y8 R) T
- let id = Thread.currentThread().getId();
( {. K: C; C( E. g" H& G+ ?3 a - print("Thread start:" + id);
0 R* \; }* J! K+ s - while (state.running) {
- W: K& L. Y2 [4 e2 d% ]4 y - try {; i+ e4 t, C6 k& W4 x
- k += (Date.now() - ti) / 1000 * 0.2;4 K, E' V" Q, F0 z- g; T
- ti = Date.now();4 d5 Y0 o# l S1 n
- if (k > 1.5) {9 I0 L& w3 c$ p# G; }# G# z; W
- k = 0;
- W- v, c( C% b( ~2 b" C1 k; D - }
0 B G) [: p2 p ]; ] B. X0 O - setComp(g, 1);
8 @7 R% z8 h* [ - da(g);0 v. ~5 H: B0 [4 d8 z, x! ]2 E
- let kk = smooth(1, k);//平滑切换透明度- @1 X$ O& f8 L* W0 D
- setComp(g, kk);) }3 R& H( N+ b1 L( Q$ r
- db(g);
, n, ~- _; b- F! w9 P( k3 x - t.upload();
$ k# c0 _# p h$ t& J3 N - ctx.setDebugInfo("rt" ,Date.now() - ti);
# R- [* v6 v# R6 p7 w- Q7 N5 @ - ctx.setDebugInfo("k", k);! ^ [7 N1 `& Z
- ctx.setDebugInfo("sm", kk);
8 X' \8 {1 k( E1 ~0 r - rt = Date.now() - ti;$ {6 h h) _- g- g H v- ~
- Thread.sleep(ck(rt - 1000 / fps));+ x( }7 a, @3 L* v: `! J( K( Y2 f+ p9 U
- ctx.setDebugInfo("error", 0)2 h" U( z, \1 t8 ]) m9 O( O& o6 K
- } catch (e) {
/ y. U* \# E% |, T - ctx.setDebugInfo("error", e);5 K9 @/ i+ }9 n
- }9 {/ L4 _% V/ E! I+ K# t) Q
- }
# n! R6 }5 _4 A& e - print("Thread end:" + id);/ ]$ L( Y9 x) k) J
- }/ v0 M, k7 S) w( V
- let th = new Thread(run, "qiehuan");
9 l) Y; a8 y: R7 \$ @ - th.start();
& b: g* L& |# a' G, Q - }
$ u$ V1 Z& X0 O - & ^9 _/ H. {; S8 }
- function render(ctx, state, entity) {6 L7 |+ a- K7 L- u4 u- L
- state.f.tick();1 R+ N: ~ M) I) Y. w
- }
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8 \0 Y1 y/ ~! m4 p3 \- S- function dispose(ctx, state, entity) {$ d( f" n0 L1 v
- print("Dispose");
( K1 z9 |" C o - state.running = false;: E8 k" w5 R! b1 y
- state.f.close();
9 r5 r" T; @; @7 y% G, \ - }
8 \3 u% V2 @* \2 t - 0 p8 }; a8 |- S' p9 B, |
- function setComp(g, value) {
. z: J3 ~; Z& J# N) A3 {. p - g.setComposite(AlphaComposite.SrcOver.derive(value));
8 Z1 u" V5 n* w( F - }
复制代码 d ~6 W3 d! K5 {5 k* k
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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+ R) m6 Q: R9 q v顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)# H* Z6 l6 I2 O H0 q' L
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