|
|
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
×
" g- @, B0 t8 G+ y+ z' {9 n9 j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。
7 f, B# s8 O. v, f. Q/ y- importPackage (java.lang);
) w# ^) H0 d1 N" A, l% R- ` - importPackage (java.awt);4 O `6 x/ [8 B
- $ M4 u4 R4 u( L1 z
- include(Resources.id("mtrsteamloco:library/code/face.js"));( r$ \" M; |* Z: }! {
* T$ J" I( C! b4 O( ]- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);5 h0 u; P5 t" m$ B O y- z
S$ d+ D, ?6 R1 K0 s- function getW(str, font) {
( R! Q# y) c8 B' V3 P( [ f! e - let frc = Resources.getFontRenderContext();1 M% U9 }' B6 |: W, K! ^( o
- bounds = font.getStringBounds(str, frc);! k7 _3 Z0 f L& M. V: v
- return Math.ceil(bounds.getWidth());
, M* u; s; J- t; Q - }
* Y s# Z( E; n& _* d
5 |; X# G9 U% t- n, |- da = (g) => {//底图绘制. G2 S6 A$ }* O
- g.setColor(Color.BLACK);) A3 r" j2 a. B: u4 r$ C! v
- g.fillRect(0, 0, 400, 400);
; f: I! V6 m- G1 [4 @ - }
$ k7 K; u' m& S* N - - ^: Q, S B+ O9 }9 L
- db = (g) => {//上层绘制' y3 P. J3 `0 `; T8 s
- g.setColor(Color.WHITE);
4 T; u; V( p- v% X8 f - g.fillRect(0, 0, 400, 400);! Z) _4 L/ V) w- s8 T# V
- g.setColor(Color.RED);8 r! i4 \+ I; g' S! C7 B2 i6 i$ _
- g.setFont(font0);
5 |7 m4 d) e8 z n7 j5 z, [ - let str = "晴纱是男娘";
* ~* r1 ]$ _* D - let ww = 400;- i* m8 W9 @& p5 g8 q' o4 E% L
- let w = getW(str, font0);! W5 l0 @1 Z$ `1 L
- g.drawString(str, ww / 2 - w / 2, 200);3 |$ ^3 |/ c5 c9 g5 s. e7 r, H9 c" F
- }4 P9 Y# U: ?4 P( Z
4 B' h4 r3 K' m* X3 z7 i- const mat = new Matrices();" D+ s7 m$ h, h, _; o8 M
- mat.translate(0, 0.5, 0);
6 X# x. v5 R- f: ?( p! M* c
! m0 ?# O. S" f5 @- function create(ctx, state, entity) {' I0 n6 i) l; |" r7 {9 p g
- let info = {/ m5 W9 m3 z k! t% ^! d0 V
- ctx: ctx,7 f9 m( h! V& ?4 q+ s! D
- isTrain: false,. X* T8 ?# r4 E: h! \
- matrices: [mat],
8 P8 a6 [: p @2 G - texture: [400, 400],
0 [# a0 u; a) P$ |, n# t, @ - model: {4 L+ P% W/ s3 D
- renderType: "light",* f( R! F) z9 S, V$ X6 R I# l9 I
- size: [1, 1],# h ?0 S) `7 N: u( x
- uvSize: [1, 1] t% c$ I* }' ]/ ^7 a$ G
- }
6 |1 _: l, |# C+ A0 Y2 I - }4 ^5 k( {# f0 A$ u( ~
- let f = new Face(info);2 r! ~: X" y1 G* x, s- U; D$ L6 V
- state.f = f;
4 Y3 `* a; c+ W u6 Y8 K
, ~. W3 j" U# {. b3 H K J- let t = f.texture;
: K( k* A+ w" W0 f0 B: l - let g = t.graphics;: q6 `, S8 l5 b" W
- state.running = true;
7 U4 W* ?( ?: R: M+ ^2 r - let fps = 24;
/ u. R" P c7 B- b% V; A- m# k - da(g);//绘制底图+ ~8 }7 d* r6 k% I0 @% u* @, X
- t.upload();
# j" W6 Z! ]; n F* S - let k = 0;
2 C2 M! c" X, V# t - let ti = Date.now();$ h6 F+ q! k. C u5 S
- let rt = 0;
R2 X6 M: ^5 x1 m - smooth = (k, v) => {// 平滑变化& _! F* S5 w) A% U) @( v& g# N, Y
- if (v > k) return k;6 ]8 l7 n, v1 ]& t9 M
- if (k < 0) return 0;
C* Y( m# t. b, Z( Z8 l- o' x# `: a - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
+ p5 M' _, v+ a, u2 w6 g" L9 \ - }
! ]- T# n% I- q( r7 \ - run = () => {// 新线程
, V3 A# y2 r5 k - let id = Thread.currentThread().getId();. J2 |/ [2 ^* S5 s: ]9 w
- print("Thread start:" + id);$ {) @) @# W9 X$ ^7 z' `
- while (state.running) {
; A- a- {1 X8 x5 v# R' ? - try {' }: q, H- v, G
- k += (Date.now() - ti) / 1000 * 0.2;: x" O" f5 a+ S+ _
- ti = Date.now();
: O9 m, h6 L/ C5 ] a - if (k > 1.5) {
7 C7 g5 T& s: a; W* f7 @2 `% H3 t, ^ - k = 0;
- S0 @5 {! C' Y) A- I6 _7 C - }5 W. a" A+ M6 ^. m) ^8 x2 H# y& B
- setComp(g, 1);
1 k% }% g& X+ r+ @; e& E - da(g);
$ N! o3 _ l' g - let kk = smooth(1, k);//平滑切换透明度) x% u- B" X* T/ Z3 R/ V- b
- setComp(g, kk);
% g6 W, u7 |- U/ M - db(g);2 m. x4 a7 y4 f! c
- t.upload();( p' F" S0 X* I. x
- ctx.setDebugInfo("rt" ,Date.now() - ti);
: {( p, d: P; Z3 B& V - ctx.setDebugInfo("k", k);
* b2 B1 J, J* r' K( K0 H - ctx.setDebugInfo("sm", kk);* W1 V. P0 L4 _7 a- O! z3 T
- rt = Date.now() - ti;
' ?4 }5 h" ~' {* A% D8 o% ]* g - Thread.sleep(ck(rt - 1000 / fps));) V' A! W( d/ V2 k
- ctx.setDebugInfo("error", 0)
" ?- y& X9 d) h# z5 f4 }; K - } catch (e) {
8 X4 n: h. N) ]9 U% h6 J, } - ctx.setDebugInfo("error", e);" j; q3 o* O4 Y% n5 B
- }
8 K( ~6 F9 v+ P% k - } t9 b% S7 ]7 v& e: E* b* S' g
- print("Thread end:" + id);
4 S4 i9 S/ }3 U; k4 D: Z; ~; ] - } o Z/ y6 i% t O/ g2 `4 t& a
- let th = new Thread(run, "qiehuan");
2 C( _$ R: [, U5 z - th.start();2 G4 \, A# v# z- W* r
- }
) W& X) {' a$ D
1 N: e v. H3 N f6 I- function render(ctx, state, entity) {" H; e, E: d, h! H8 \
- state.f.tick();
" {' d8 Y& Q* j1 l$ P- g- H0 z - }
0 c! N7 k# o" ^6 m3 y) Y: x
/ r4 l% F, L3 w! ~# W# ]& o- function dispose(ctx, state, entity) {3 i4 ^9 \- ^! r8 M
- print("Dispose");
7 A) V7 V" {8 O: v) V5 x - state.running = false;
8 d7 K* e0 c; W4 O: }2 x - state.f.close();- C: `3 u/ O0 [+ C
- }
/ q2 P- L) y8 [' I. d8 T9 @7 m - 8 X0 ^/ }0 S/ p1 d( m
- function setComp(g, value) {
+ { K+ V: F* u$ ~! A/ d1 N - g.setComposite(AlphaComposite.SrcOver.derive(value));: |, o% y. A0 |+ \3 P
- }
复制代码
( v+ h* e+ ~/ l$ x; N" q6 o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。% i: C2 ~: [$ O+ i: B
3 y5 n' }3 B8 H, }0 w1 g
- K! |; K1 f' 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)7 L. V, M ~, i4 d/ e0 @
|
|