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+ y/ `; }/ C3 | Z2 O; Z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。
+ a& R" H' S" ]& j' \2 b) b- importPackage (java.lang);( t7 ^. b3 C" o" h8 r
- importPackage (java.awt);7 [6 E. X: P) i
- : ^; `+ [$ X8 X
- include(Resources.id("mtrsteamloco:library/code/face.js"));+ A% h8 D. l2 J6 D
$ J0 ?: ]$ O4 j- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
' q$ z( u0 G$ L0 {- V+ x: Q6 N0 m* i
) ^/ y, y( H9 u& ?. g- function getW(str, font) {* q. [- p6 I7 N
- let frc = Resources.getFontRenderContext();) ]$ v9 c) s; g- l
- bounds = font.getStringBounds(str, frc);
: I- ~" u* {9 |# h" o4 t - return Math.ceil(bounds.getWidth());
o* J8 ?% _$ j% t- q - }' n7 ~* }; S$ e
- 5 |2 O) y" B& O6 d! Q8 l$ T, U. L
- da = (g) => {//底图绘制0 _. N& r6 Q: N9 y0 c# D3 H$ R
- g.setColor(Color.BLACK);
- e+ y$ {2 j. U - g.fillRect(0, 0, 400, 400);
, ]# h2 P8 w6 O; |+ C2 A/ G4 z9 X - }8 a& o6 e/ @& M5 w! a# O t
- 5 g5 j, O8 D% e J
- db = (g) => {//上层绘制7 v" G& P5 p+ G' @
- g.setColor(Color.WHITE);
7 \) a& s) V% l0 { - g.fillRect(0, 0, 400, 400);
# O5 A# l7 @# G+ M - g.setColor(Color.RED);2 S! g: g( P! t1 d$ V) `
- g.setFont(font0);
8 [7 {: e3 D" A3 z/ V8 d2 l) E - let str = "晴纱是男娘";6 w7 p2 u# }2 `+ F( [, }4 l% w9 y% b
- let ww = 400;
" D( k3 u2 t) x- M - let w = getW(str, font0);
, o* h4 p3 q e/ ?8 O* A - g.drawString(str, ww / 2 - w / 2, 200);* d' L7 J6 [- B+ I: V; @
- }
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- const mat = new Matrices();# p& ^# f1 y- s8 A0 y- g3 G1 U5 c
- mat.translate(0, 0.5, 0);
2 h/ o' Z5 N0 g* A4 n# _
6 ]6 {3 L2 g: q& [% t- function create(ctx, state, entity) {+ [" c5 m5 c9 m/ i( c1 S
- let info = {
% T) e5 \& h% X; }+ x& m5 F - ctx: ctx,
' J1 d8 U# g. X/ Y: |+ f5 h+ P0 F - isTrain: false,
) p5 q4 p' ~ t+ Y: Z9 Q# y, I+ _ - matrices: [mat],
+ t+ H" J0 X! C* C0 \0 z - texture: [400, 400],
7 @' [# J2 ^7 l# H" h/ q - model: {
+ L5 i3 p1 P, _ N) f- X' s - renderType: "light",) D* V/ B0 P5 l/ T& n6 ?" h- _. `
- size: [1, 1],
8 @8 o( t+ H9 q( {+ K. s; j - uvSize: [1, 1]3 \. f$ X/ v: C$ S
- }5 ]) A W5 x% {# v6 [5 ]
- }
8 w9 ]" [' M/ F% L9 W& ~ - let f = new Face(info);
, S8 q' `( u3 o: g - state.f = f;: B+ P4 f2 J7 P) u; e$ u3 s
- ; ]. T; m3 i& i; x. a
- let t = f.texture;, w. U) J6 Y' K9 h+ @
- let g = t.graphics;
# @, }" u" G, O- E - state.running = true;7 _6 B3 V+ P$ j) v3 G
- let fps = 24;
; `' k. q- q. n% E+ {) S0 r - da(g);//绘制底图
8 c# M+ v0 B" h; v' H# | - t.upload();
m3 g2 z0 }+ u' ^& Y( Q - let k = 0;* k' }+ ?5 Y5 Z9 M; c
- let ti = Date.now();
. V. v V: W% w1 K- O$ L - let rt = 0;+ {5 T5 t$ [$ H2 c
- smooth = (k, v) => {// 平滑变化
. v4 A/ L3 ]7 V) L" W9 l( u& a6 Z - if (v > k) return k;, S I2 i2 M3 X$ \3 I7 y; F& @6 L
- if (k < 0) return 0;
$ v4 w, Q6 F/ `1 }' E" L" s - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;2 o2 ?3 f- Z4 Y
- }
8 Y$ O: }2 d) R N3 q# k; s - run = () => {// 新线程
3 H; f; Y6 [( g! `/ F; m8 g - let id = Thread.currentThread().getId();; D1 T% k6 y% {' y. i; G
- print("Thread start:" + id);
( a8 I- }8 B1 B1 L - while (state.running) {; K& l. T% V9 F2 s+ Z
- try {
/ ]; Q9 f: y" y r - k += (Date.now() - ti) / 1000 * 0.2;$ k3 C2 ?$ q! u* P8 J: B
- ti = Date.now();
! m6 T3 S2 z C - if (k > 1.5) {
9 g) _+ A2 |8 O8 ^8 f% p9 d2 ] - k = 0;
; I0 a2 _" U* {; ^' ?2 N$ u% k- i - }
) d* c7 ?0 P1 J7 x9 h* U - setComp(g, 1);3 j0 w: E1 Q" H
- da(g);2 [) G" _& @ A3 [( _( r4 Z
- let kk = smooth(1, k);//平滑切换透明度) S9 Z. A( ~1 Y9 u, |
- setComp(g, kk);
- Q# ]6 J2 A9 e# q. D" x - db(g);, v2 |" l* v/ H0 M3 l
- t.upload();
3 R! x; X( P1 \9 a* { - ctx.setDebugInfo("rt" ,Date.now() - ti);1 @( ? W; R4 e5 [4 ~- _9 L% T
- ctx.setDebugInfo("k", k);2 z3 t( Z+ U$ _$ ~6 ^: x& C
- ctx.setDebugInfo("sm", kk);
! f& x3 U4 q5 i$ d: h" n - rt = Date.now() - ti;
- z; q/ H( I, m! ]2 F - Thread.sleep(ck(rt - 1000 / fps));
1 b0 z; E& H& c% t - ctx.setDebugInfo("error", 0)
' G1 c7 ^, q0 e- ^ - } catch (e) {9 s6 \% K5 S- T; N
- ctx.setDebugInfo("error", e);6 H @: l: B! k7 L% p
- }/ P& n5 c# e+ Y
- }) t5 E2 X5 `( f9 B
- print("Thread end:" + id);& }7 S8 {' G* Z# o; |0 A7 A
- }5 w6 z9 c' D, M
- let th = new Thread(run, "qiehuan");
. p# y7 L$ h! u: W9 z0 O$ U- Q - th.start();+ f1 ^" \6 h. M% \* K2 r
- } [/ h! e1 ~- V
- ( J( F/ G! r( g: Z; G
- function render(ctx, state, entity) {
3 K8 ]+ K4 ~$ }, B# ^" b - state.f.tick();
# C3 Z/ k# `/ f5 l% ^: i - }
0 i# U1 J9 m+ n0 P - / B9 Y3 c; d" C5 U
- function dispose(ctx, state, entity) {9 j# i1 F" v$ j$ N# T9 D2 { s
- print("Dispose");3 }9 k( T0 e: i# n9 d2 N
- state.running = false;( \$ B5 n% l1 o& a h
- state.f.close();; p/ H6 F# g, e" @ J8 H4 g
- }
' u3 r7 L" d1 _+ ~4 {4 r! W - & x2 I% P% [4 f/ s1 J
- function setComp(g, value) {2 m' M) P3 W/ m7 \
- g.setComposite(AlphaComposite.SrcOver.derive(value));
3 D/ a* R- J( q% t - }
复制代码 : G5 W1 s5 X( a
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。
# G x/ i) Y' j7 ?" g" X( i: n7 V4 N h# h8 C9 M# G' e: Z5 ?
% R8 n, L, K X, I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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