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d7 s% c' C+ h+ L/ b: [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。1 D6 R$ I) v2 s5 F% c
- importPackage (java.lang);! Y; Y8 F6 ?) G4 Z7 [6 [$ i
- importPackage (java.awt); q7 h) B/ n5 r s( t4 u1 |1 K3 {
- * O+ n5 i* K1 A! b
- include(Resources.id("mtrsteamloco:library/code/face.js"));, m1 p7 U6 K9 m& D
- ( X* k# T8 K4 b3 u
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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" g! V% U( K1 g2 R& ^$ e8 }- function getW(str, font) {+ V2 h0 O! q* p5 `
- let frc = Resources.getFontRenderContext();
' j/ T4 ]( P' e8 u7 \' a) T% E; O - bounds = font.getStringBounds(str, frc);4 y. |: ^ t1 O4 [
- return Math.ceil(bounds.getWidth());& P7 o8 g4 Y! d, K# y; }' g! n
- }0 v; h3 F$ }' k
- + j& W" c4 s# f9 c v% O0 l
- da = (g) => {//底图绘制 W9 A Z* G* t
- g.setColor(Color.BLACK);4 S/ \+ r4 Q$ l* [" H9 @# M
- g.fillRect(0, 0, 400, 400);
4 E& n& D, `* i, P2 ]; y - }
( I3 X/ ^5 i' H. l# @& M - & x w! H1 O; P$ Q0 V1 v
- db = (g) => {//上层绘制0 Z& x7 \! E! M1 u- \) i; ]# n) d o3 s
- g.setColor(Color.WHITE);
0 f/ W& V! }: U# k; X - g.fillRect(0, 0, 400, 400);3 K( I; F$ {0 G
- g.setColor(Color.RED);
4 T m0 S' N' L( B - g.setFont(font0);
0 t/ n5 Y$ L8 S( ^0 D- ]2 Y# c - let str = "晴纱是男娘";
& [" q# |9 S' S. @ - let ww = 400;$ u3 r5 f7 G- h0 a, W- U, i
- let w = getW(str, font0);
+ J& A! `- V% K1 w& O5 x& O0 t. q - g.drawString(str, ww / 2 - w / 2, 200);
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% u5 h2 M- o8 z3 D( t- const mat = new Matrices();
. ?" V4 f0 Z4 L/ r6 ]4 s7 | - mat.translate(0, 0.5, 0);
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- function create(ctx, state, entity) { e8 t0 d% }9 B8 Q3 ~8 U' o
- let info = {/ g `+ \; x/ u+ x
- ctx: ctx,2 A7 {7 J! \1 c/ ~
- isTrain: false,
3 \9 L& ]& K; T! B) \/ k( w - matrices: [mat],
% l8 S0 R. y) {2 a+ e- m& W8 g - texture: [400, 400],: F% A( F& E. E5 k _
- model: {
5 ~7 P9 s# X$ X7 r5 t - renderType: "light",
q7 n/ y* e! S: Y; m - size: [1, 1],* p5 v( |* S5 E3 p* [2 j
- uvSize: [1, 1]
( _, y" c! ?" H/ |$ j8 o/ f0 S - }
% Z F- W9 N) P - }
% `# L$ i* s! H- u - let f = new Face(info);" B. x9 @. B. j
- state.f = f;
4 M7 R( c L! H g
8 m* v/ T" A5 `; I7 C! ^3 t! y- let t = f.texture;
' W- v4 H) \+ ?5 q* y - let g = t.graphics;
' z* K9 h. V5 C- y% | - state.running = true;: }, z/ j/ ], U( d7 c" J( s
- let fps = 24;, [$ C, R( e- h& ~9 T
- da(g);//绘制底图 u3 ], l; l* T6 o
- t.upload();9 f( z/ Q) t E
- let k = 0;4 {( k, O3 t, V9 H" d; H0 D
- let ti = Date.now();
5 Q6 u8 m& V& ?' o) U* A. V/ M7 X - let rt = 0;
8 e& e, y$ s5 d- U$ [ - smooth = (k, v) => {// 平滑变化9 S' @* \4 q6 ^2 s( M' X
- if (v > k) return k;
7 C9 _( P6 t" x - if (k < 0) return 0;
& q2 W9 O: b( h5 }, C - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;" p% w8 D9 I( `( o; f$ F
- }
0 v, H* T: w: c5 `% x; U - run = () => {// 新线程8 _/ K, K' A9 [; g+ R5 W/ ~. H3 P
- let id = Thread.currentThread().getId();8 i1 D* Y- s% v: b2 w
- print("Thread start:" + id);8 w2 A0 n: D6 r, G
- while (state.running) {
1 ?& _. V Q! w9 _ - try {
* i1 e$ U* i; {+ r5 r3 \; u! c - k += (Date.now() - ti) / 1000 * 0.2;
% i- N% g0 y4 w5 ~" `% K7 K4 h& i - ti = Date.now();
! U* t9 k$ h! B6 u6 @9 ]4 U - if (k > 1.5) {1 X5 B) ]% K2 J4 w) \, a6 U: W/ u: P
- k = 0;
' Y0 j( @1 G) I - }
0 ~ P: ^. o7 r6 L( H9 Q - setComp(g, 1);! G& I* |9 x/ J- L
- da(g);
+ ^" y# W1 g& @( H, I& F( ~ - let kk = smooth(1, k);//平滑切换透明度3 @# |& M* F) a
- setComp(g, kk);) t1 E" i$ q& A: {" W# e
- db(g);
+ B. q8 P1 i. v+ a' f) I! w - t.upload();4 \: R, y/ s, k
- ctx.setDebugInfo("rt" ,Date.now() - ti);4 }" `; \6 A& y' V
- ctx.setDebugInfo("k", k);+ u3 ^$ k2 t+ s2 ~2 P8 [
- ctx.setDebugInfo("sm", kk);
9 a; ]6 @9 z" W" G3 s/ g, Q8 e - rt = Date.now() - ti; |$ J( m2 Q* w# k! G
- Thread.sleep(ck(rt - 1000 / fps));
& G& h7 O. [- D/ L% H4 j: I& v - ctx.setDebugInfo("error", 0)+ w' h4 m9 f; Z: w3 `
- } catch (e) {
# e0 r1 d6 x8 y9 T7 ]# v - ctx.setDebugInfo("error", e);
" `+ i$ @9 S) ^ - }
# o0 g( E, n4 k! a- u3 Z - }
! F& j) W$ I; n# c& c0 U - print("Thread end:" + id);
5 P* w( {4 F/ d% I& Y! d( n- J - } \' j( H4 r9 f
- let th = new Thread(run, "qiehuan");
; A; B5 |% \4 F# F+ v - th.start();
; J: Y& Z- q8 S - }
9 e% B4 b6 w$ I. G3 m
& F# |/ Q4 T2 c' s5 t: X- function render(ctx, state, entity) {, g5 e8 I- U4 M1 t, c/ q8 o6 o
- state.f.tick();# W3 q( s' i5 {* a. p" W4 {# c
- }
- L/ V! K0 I+ s - 4 p* J; z; f6 s" g& k8 c9 ^ ]$ j
- function dispose(ctx, state, entity) {
: E) `! [5 \7 g9 P! X6 | - print("Dispose");
9 @5 @4 K7 b0 W+ U2 Y9 v - state.running = false;
Y0 A; \* o' U! C! U7 r2 q - state.f.close(); Z f7 g5 @! v5 c* F' H
- }+ {3 v5 L' X6 g. s% B
& {2 [. V8 K! y# ?! T6 j! z- function setComp(g, value) {3 b" v( \/ E: A
- g.setComposite(AlphaComposite.SrcOver.derive(value));% q# J8 d* @% x' _
- }
复制代码
8 u! H% k, [/ `6 f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。# [8 Z5 }4 j3 i n' g. ]
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顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
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