|
|
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
×
. @2 S6 J# L& P8 R7 f& h! N5 F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。
- p3 [( X3 x' ?* n& g2 x- importPackage (java.lang);
$ X7 R; c4 k4 }% l0 N8 x- F: ^6 G* a - importPackage (java.awt);
0 `6 g4 r7 M( W - " {) n' o1 U7 t+ w
- include(Resources.id("mtrsteamloco:library/code/face.js"));
4 J% s- i. @) r! @' r& Z - ) j D0 q1 \, Y2 ]0 x7 _) X3 a
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);/ X$ t0 ~2 P ]6 ~' f* r5 h% i& [
, z' z% m* g. m# s4 v$ S& v2 u- function getW(str, font) {
8 q& g- v6 @3 o - let frc = Resources.getFontRenderContext();
, {# O, s. y" v3 Z+ E7 L, S9 h - bounds = font.getStringBounds(str, frc);
, P2 w; z! N" [: g - return Math.ceil(bounds.getWidth());
- t/ j2 W, m. ? - }" q$ m6 [( B T/ K8 z5 Y7 a6 p9 @1 b
- ( H, f2 D3 t' T# a
- da = (g) => {//底图绘制
( r6 X# |: K& I5 @- G$ Y6 Z) n5 D - g.setColor(Color.BLACK);
* C! c: T* X7 d3 Z - g.fillRect(0, 0, 400, 400);0 N, ?% l9 ?1 \! l
- }
6 v! ]3 p" Z! R- N7 v' I/ g
8 K& a6 L) A# I5 K- db = (g) => {//上层绘制
/ e+ C9 |" C8 c, F/ N Z - g.setColor(Color.WHITE);
! |1 y( }/ K1 t - g.fillRect(0, 0, 400, 400);
" `5 Y& A1 g5 Z: }) C3 | - g.setColor(Color.RED);* a$ g0 y( c& p) ]2 _3 E7 n' d1 m
- g.setFont(font0);
4 r, `& n& l( p9 O4 o, R' ~9 K" d - let str = "晴纱是男娘";
, ~& P J( r5 V - let ww = 400;$ Q4 n8 }* |" N7 K2 K& Y8 ?
- let w = getW(str, font0);
" J; r7 s; K6 A1 y, G O - g.drawString(str, ww / 2 - w / 2, 200);
, V: b8 k8 i) i& }3 v: W" } - }
5 [. Z, H4 y! C: v) s; z
" g& f9 f9 _3 Z+ T9 P3 v" ]! |- const mat = new Matrices();
* u9 A" B( f4 \) A- J6 b - mat.translate(0, 0.5, 0);
. ^4 d, q1 z p4 s
3 K- C: N6 c u- function create(ctx, state, entity) {
3 i& k6 R/ h* X8 x a Z4 W - let info = {/ [/ ]+ j; U( ]& E; k( n
- ctx: ctx,
$ |( `+ n; P5 d9 O - isTrain: false,
5 v( k. V8 E y5 N! h& S - matrices: [mat],
; @2 E7 P: s) k9 c1 W$ P7 X - texture: [400, 400],
( R/ A; s0 A! F- B6 N: {0 n1 X- a/ d - model: {! f. h* q% ^; s8 u. M( Q% w+ U
- renderType: "light",
7 }/ V9 B: @- w" n# _' G - size: [1, 1],* h+ m2 V& |" q, `% h% u) {7 {
- uvSize: [1, 1]
/ I5 z9 T8 M+ R - }+ {2 [' `$ v8 }! u
- }
" `! }; D1 n* } R - let f = new Face(info);! S! e: F' ]6 H* I; h% f8 U, E( R
- state.f = f;% Z8 p6 f. A( ?& N6 C" i
- ( a4 e) ?; ~- M/ A
- let t = f.texture;$ M& z0 ~' Z. p! I
- let g = t.graphics;
/ { H. B2 Y+ v! l' b - state.running = true;* }% s" }6 B0 d6 t; |
- let fps = 24; A( _- q7 @6 ^, P
- da(g);//绘制底图
L; \5 n. O2 [/ @1 ] - t.upload();! L- P0 V+ j2 p7 |1 t
- let k = 0;5 q8 H9 t3 u: _
- let ti = Date.now();
4 X: W3 j+ c; A - let rt = 0;
( C7 ?7 W' F9 D6 x. k - smooth = (k, v) => {// 平滑变化
: T" c9 X! Z k - if (v > k) return k;0 r& B! e |" M, G. ]
- if (k < 0) return 0;
! {9 h' }8 D; k/ w - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;0 Q x# P0 M8 V5 L" i5 c" j5 s
- }
( b. W1 O& R' q - run = () => {// 新线程$ K" T6 r. v T; h1 t
- let id = Thread.currentThread().getId();
/ T& S* g8 w0 J, i! C9 K1 ~# K - print("Thread start:" + id);
0 `5 H5 U2 T, @# [5 I - while (state.running) {( J5 }7 V/ S0 V. C+ k) d
- try {7 j0 g. r$ a `6 L2 u: U" r
- k += (Date.now() - ti) / 1000 * 0.2;- q7 {# @# V5 A. A
- ti = Date.now();
6 I5 T: B B( O2 @2 z1 a4 q4 ^ - if (k > 1.5) {" O! }% y; G9 o7 A- z$ u% S# E& G
- k = 0;
. w/ ~& o- K5 J' e7 L* ?+ p - }- e. m5 T8 M7 {3 S, ?# e+ Z
- setComp(g, 1);
. R Y6 _* W& {' l$ A$ _: _$ o5 | - da(g);9 W9 p! c/ ]' A q) k/ j
- let kk = smooth(1, k);//平滑切换透明度
7 |$ k. V4 c/ @. g! ?+ J8 Z5 _ - setComp(g, kk);
' m1 Z& E8 ]" h; G6 Q. h+ f! ~ - db(g);9 p9 h7 p- U. i
- t.upload();
* L6 g7 K: L! ]7 B2 a9 L - ctx.setDebugInfo("rt" ,Date.now() - ti);0 }* q: w" A* d8 V+ R
- ctx.setDebugInfo("k", k);: W* W- I5 C" n7 T+ }! d4 R
- ctx.setDebugInfo("sm", kk);
! ^- ^. H' a. H, ]( F3 r - rt = Date.now() - ti;
! \% s7 h" W4 \4 w5 M5 ~5 n - Thread.sleep(ck(rt - 1000 / fps));
7 S' O9 M# ^! b9 g - ctx.setDebugInfo("error", 0)
- B+ z6 Z* p( k! s; p - } catch (e) {
, S" \/ \5 j+ u2 Q d) N - ctx.setDebugInfo("error", e);% F$ p& [1 l7 t% Z. E
- }4 V" l7 c, I* Q- s" B, I' ]% P! T2 u
- }5 ]/ C+ y" x ~) x5 c! h# c
- print("Thread end:" + id);
4 o# Y# J% J+ N8 {% f - }0 O3 S3 F3 F& v _
- let th = new Thread(run, "qiehuan");
# _2 Q! u3 c4 a9 x( k - th.start();
4 y2 f0 i% p# f9 v; Y - }
- ]$ E! a: ?- N' r4 U! g9 w! ` - ; x8 a9 V0 p! b# b
- function render(ctx, state, entity) {
# S2 q: @& x% g- i( W& Q3 _1 W - state.f.tick();8 q" }- S4 ?1 H) t' x' V# ?
- }, l6 O, Q0 M; F! O
. [' ~0 {3 `5 J9 n- function dispose(ctx, state, entity) {1 G, x4 ?! F1 l1 H6 G6 |
- print("Dispose");
: \- U* k! c; | - state.running = false;* K, [' h" p- }' U9 f$ r
- state.f.close();
3 e9 \7 Y, r( R0 G) A: N- S y - }3 j" ~% P; R+ t5 b1 A* \
- 5 `$ j* f3 R! d5 ?2 E
- function setComp(g, value) {
: w3 p8 s' |2 l1 N. t( X* R# | - g.setComposite(AlphaComposite.SrcOver.derive(value));1 n' ?- X, j q+ |
- }
复制代码 , o3 P+ ~% j1 B! B( ~+ y
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。% T$ k! p7 f4 v' n% J/ l
1 y8 M7 B: U# m
! e5 J/ I; ~8 @. g) k3 V9 W顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)) \; M6 B; T8 C, P t
|
|