|
|
还没有账号?赶快去注册吧!
您需要 登录 才可以下载或查看,没有账号?立即注册
×
# N* l7 G% l- |2 N( r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。
C0 Q5 y+ @! Y/ l* V6 T- importPackage (java.lang);
% o6 ~3 X9 \7 N4 \$ N" ] - importPackage (java.awt);
: \ @' e$ [9 s& D
' `/ G2 U# a8 Z' t- include(Resources.id("mtrsteamloco:library/code/face.js"));- p. i0 |! ~. u4 O; k( B. L( \( m
# Y/ t' J0 G; X8 A- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);4 x; |, p1 r1 h; X; n" \) j0 Q
- 7 i/ ^& c# z7 S" `( X
- function getW(str, font) {
: A$ z' w* G: e- ?3 c - let frc = Resources.getFontRenderContext();
" s% E$ e* K( b5 f, T5 |+ b - bounds = font.getStringBounds(str, frc);
' F" ?- Y# J7 b, K9 `1 G0 | - return Math.ceil(bounds.getWidth());
) `: A6 y( `6 w: i/ D - }, v# [ P# V/ \$ b
9 U0 n4 }) f& H- da = (g) => {//底图绘制9 }% r7 \* r; |0 D# p
- g.setColor(Color.BLACK);
( H5 I' `; {) H( J0 K - g.fillRect(0, 0, 400, 400);3 @$ o9 V# f1 p' \ a
- }. b0 o1 ^2 _; ]" v. X H
- 2 R% N+ r1 C: }' b3 z8 v
- db = (g) => {//上层绘制
$ P0 w- O' m& P# e& Q8 l - g.setColor(Color.WHITE);. Z( ^. G: ]5 j0 @* ~
- g.fillRect(0, 0, 400, 400);
5 b0 X" X( K& _+ a' J - g.setColor(Color.RED);
1 J- s; x7 `2 ~* h/ n! t5 v - g.setFont(font0);5 r) G* `9 X5 I( w$ f! u: {
- let str = "晴纱是男娘";
* ~& A* H+ s5 P4 ]* p* C7 Z - let ww = 400;
6 p, h. h" c% U9 z; X1 V3 @% d - let w = getW(str, font0);' O* Z9 |5 B3 e/ x
- g.drawString(str, ww / 2 - w / 2, 200);" F' V. Z4 l: m, {) T" e" J, U& j
- }4 Y3 S3 X) |5 B+ h& I; [4 r
- C) O O2 C4 p% r0 s A/ q' S
- const mat = new Matrices();
( A( Y+ c6 Y$ v8 z% m- }3 d Z1 ] - mat.translate(0, 0.5, 0);
) s/ k- A: D4 U6 S2 D" V, r" @
+ @0 h. O& g, b c- G# q7 f1 @- function create(ctx, state, entity) {6 X2 C+ V6 H1 B) N! }; a( {
- let info = {
$ K: N/ }5 K0 g& y0 G5 [ - ctx: ctx,8 {6 a7 n, A- Z$ v8 }; e: N$ [3 H
- isTrain: false, o7 U* F9 O& t `
- matrices: [mat],+ a1 L$ y) _7 u; O4 t3 z6 C2 V' ?
- texture: [400, 400],* h: V5 \ s* r
- model: {
; C. s, b1 j" n# d4 D - renderType: "light",( o% _1 M- r' D& [
- size: [1, 1],
% k/ _2 a( J. r0 @5 r - uvSize: [1, 1]9 A2 S+ Y' u* K& q2 L$ m& E0 ]
- }8 w, d" m9 _3 x& I: v1 j8 F& P
- }
: c2 b$ c! Z) j - let f = new Face(info);
5 ^/ `! [2 K1 G - state.f = f;
+ ]) f( R9 M# Y: j u* q7 {
) |1 E, z' {/ k3 E8 ?- let t = f.texture;# e- T: \5 Y" u( E; T+ e: c
- let g = t.graphics;
, K, e9 f6 l! a - state.running = true;
6 C( }+ f9 n3 S) b& v1 B - let fps = 24;
, W% y$ F; }0 S7 J5 D4 D& N - da(g);//绘制底图9 t+ i6 T/ Y0 e
- t.upload();( J! E4 Z* k7 \& s- S4 { u# w
- let k = 0;0 p0 I5 i+ n$ e; A. A9 ~
- let ti = Date.now();
$ K$ C4 H' Q O* Q - let rt = 0;
6 }$ b j d9 a3 x8 d9 [7 j: I" q - smooth = (k, v) => {// 平滑变化" r" T! K6 X/ @7 W
- if (v > k) return k;
) B. B' Q) f: O7 U& p; b - if (k < 0) return 0;
( g$ R5 Y; f; G( e2 g& R - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
% x' }4 _2 R, B1 L+ J" t; a4 g1 u - }
3 J9 x3 m, S+ [6 U5 W; H2 B8 B - run = () => {// 新线程
: {2 {' N- f$ N2 s$ \ - let id = Thread.currentThread().getId();
! N; R( ~& Q$ A4 W. G" Z9 Z - print("Thread start:" + id);2 r( W0 w* f; y0 g/ Q
- while (state.running) {
2 R6 V* F0 d5 G' d - try {+ [; n) ]$ @' |' u6 u2 o# U
- k += (Date.now() - ti) / 1000 * 0.2;. n% p& j2 c/ u% r8 c9 W8 B
- ti = Date.now();# K. @) g& j) c. M7 ~
- if (k > 1.5) {: Z* C8 C" c& c! Z5 a, s3 S
- k = 0;
) U% f2 _5 H8 L/ [7 T, p. C - }
9 I) g4 t8 L: W, \5 ]8 z; K - setComp(g, 1);
' v1 f6 f4 E2 j/ \2 x - da(g);- w N( X( D$ G9 V8 i9 [
- let kk = smooth(1, k);//平滑切换透明度/ C6 `* G& d3 G
- setComp(g, kk); j7 B) m0 w& g1 f6 d
- db(g);0 B, Y4 }$ s3 A+ c4 P; w
- t.upload();; [5 a7 u9 _% m+ y
- ctx.setDebugInfo("rt" ,Date.now() - ti);* W. K9 x, ?8 J. _( K5 B* G; r
- ctx.setDebugInfo("k", k);
1 O+ d# T; @* P8 o/ [7 P/ A - ctx.setDebugInfo("sm", kk);2 `+ M' h& c" ^0 f! L; K; J
- rt = Date.now() - ti;7 B- H7 S) n+ i
- Thread.sleep(ck(rt - 1000 / fps));
8 {, F/ u% R, [' R2 i - ctx.setDebugInfo("error", 0)% B' J( Z5 \; k& b' l5 ^6 F
- } catch (e) {8 }& g- F6 ]9 l% ?9 _+ W
- ctx.setDebugInfo("error", e);& ^2 M( S' V7 `+ }$ ?$ t' X) u; J
- }
6 T. d6 U1 k5 m2 } - }- Z, C3 I4 o2 Q* [
- print("Thread end:" + id);9 y) Z4 _. U0 f" A4 x2 H
- }
, U# S4 J- Y$ ?8 i - let th = new Thread(run, "qiehuan");& Z9 |- }/ b3 z( V+ L8 v
- th.start();
7 L. I8 `& D/ i1 {- J - }2 m; }+ P: v* Z' w$ V; Z9 d1 _
( C9 o6 V5 p0 W0 d5 x8 ]- function render(ctx, state, entity) {
& x, D- M; {" I7 v# L2 ` - state.f.tick();
6 a* x3 D$ v0 k7 y - }' K. N; M: A) R
- & H8 F! A4 I$ K4 ]2 L5 R8 x
- function dispose(ctx, state, entity) {! D$ s0 O' h9 @* ?# C+ }+ e/ w
- print("Dispose");' m4 F( B; q+ D2 t6 ]' Q
- state.running = false;. Y) o7 j1 D; Y& \; {! B
- state.f.close();
; W6 @& O, s6 C: v6 U - }( g, v1 L9 C/ u
& X5 j: t9 g# h$ b- function setComp(g, value) { c& D; Z5 e: ~ s
- g.setComposite(AlphaComposite.SrcOver.derive(value));
g) _+ X6 T' H$ H4 X - }
复制代码 , J4 ` j: v7 V5 s% P6 W
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。3 }8 q8 a/ h' G0 `( N
3 q- E: V( I( ]' `6 n% [2 g$ @1 ]; P% L4 w4 J1 u6 `* s
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)" d. X2 ?2 `8 W& Z
|
|