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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。" ]' r2 f. R6 E* H. Z5 ^
- importPackage (java.lang);; [9 f* o/ a; v3 Q
- importPackage (java.awt);1 d$ w' c$ ~4 p
2 K% T. h# S7 {- include(Resources.id("mtrsteamloco:library/code/face.js"));6 [& M7 J! h) C7 N; A
- $ p# w8 j. R0 N. p" w# h$ I1 G+ ^7 u
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
' _$ k& W; H7 m6 J) c/ {
: j4 F! X2 A/ R; J7 L9 @- function getW(str, font) {
3 v8 m5 o/ B& Z. O0 X - let frc = Resources.getFontRenderContext();
+ l: `2 ^- r6 h/ c - bounds = font.getStringBounds(str, frc);/ `, O. m8 I( |( \/ E
- return Math.ceil(bounds.getWidth());
p/ K+ w, \1 B& U$ P# ` - }
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- da = (g) => {//底图绘制6 [9 y- H/ ?; ~. }
- g.setColor(Color.BLACK);7 \6 U& | y) k( F! Q- ?2 ]
- g.fillRect(0, 0, 400, 400);
3 ~1 h2 R! `0 O4 M3 o, P' Y - }! E! z# M$ ]% l! Y% }" `
" f! ]; s% l' K3 U- b- db = (g) => {//上层绘制: I$ b6 X( W1 c! q: N
- g.setColor(Color.WHITE);; ]) W) k. A# x/ B G( j/ }$ G; q) p3 N
- g.fillRect(0, 0, 400, 400);% ~4 `6 @' C/ l4 Z3 E9 ?2 \
- g.setColor(Color.RED);
% I8 t, k: _) b5 A1 F - g.setFont(font0);
1 v4 T) r/ [' G - let str = "晴纱是男娘";
1 ~( l' {. ?, F) L5 C" q( U. g - let ww = 400;
# _$ l( G7 T* p; x+ B# E - let w = getW(str, font0);
6 N5 ?4 L4 E, y - g.drawString(str, ww / 2 - w / 2, 200);* `' ?9 n- d: X G
- }
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- const mat = new Matrices();/ w4 z+ e2 }* n1 w0 g8 g9 {
- mat.translate(0, 0.5, 0);; _7 e& {" V5 J
- B/ S! T0 m+ }0 \ i
- function create(ctx, state, entity) {* q4 v( b8 Z# c9 o
- let info = {. D, @* _5 m9 T
- ctx: ctx,
+ Z- j: v- u# R5 }2 Q - isTrain: false,* @: P3 d' e5 b
- matrices: [mat],- e) e+ t3 @' v z; c( [- _6 P
- texture: [400, 400],# P, w$ }* ~7 V& i9 [
- model: {
- E% L, ]/ p& a6 P+ [6 X3 ~; Z Y - renderType: "light",' t' ~1 q3 C" \% i; ^
- size: [1, 1],
, G+ ?, v) H% B) [, z, J# W* o - uvSize: [1, 1]/ n/ \6 q! o/ k& Z3 w1 y
- }& y' ?) {2 n: ^' Z
- }3 g* y, V$ M6 r$ |. y- C
- let f = new Face(info);
! h; G$ T- C. r, L$ R2 E6 L0 e6 Z7 a - state.f = f;+ c+ F, \. Q& K; C; \! P
- - {& G3 ^- `) x
- let t = f.texture;/ G+ ]- r- ^2 m9 }; C$ @4 x
- let g = t.graphics;
4 O2 {% Y5 ]6 u0 z# B - state.running = true;1 S6 B( x! o: T4 o
- let fps = 24;
: t0 a- F1 K( a/ b1 k: a - da(g);//绘制底图
, d2 u& s" D9 N4 n - t.upload();5 d+ G$ O: f5 R- B9 _) `
- let k = 0;) i+ C* x' Z- B: V/ G; W+ \: P
- let ti = Date.now();
( F/ L) Q" E, B8 f8 h - let rt = 0;
7 M p- p; ?* n& J/ y - smooth = (k, v) => {// 平滑变化( e5 _ z) j$ @! x
- if (v > k) return k;
2 e9 C+ e+ F; Y3 u* n/ i) Q - if (k < 0) return 0;$ m3 c1 F/ W0 Y" N' N2 m+ u
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
9 [. A2 H, z6 g* l% r# ~ - }3 g1 |% x8 `- c, ~; u/ y& C8 S
- run = () => {// 新线程2 M% o, a- t% n! F
- let id = Thread.currentThread().getId();
' ~* i4 m q( w# D* y, Z" r - print("Thread start:" + id);6 g2 k; b" K3 i' j& z& g) _
- while (state.running) {" G$ r$ | n- H2 E+ e
- try {) F6 y) N2 s, Q. k W% C4 \5 E1 ~
- k += (Date.now() - ti) / 1000 * 0.2;
' W1 H" C3 B! \ - ti = Date.now();
4 e1 h* H" l1 P9 g U - if (k > 1.5) {
) O; `1 s5 H/ z* d/ ~- T - k = 0;
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- setComp(g, 1);, y0 q+ z% e. A( `: s; r7 A% [
- da(g);
, f# V/ I; Z) _' Q9 t - let kk = smooth(1, k);//平滑切换透明度
- ^' {, r6 D z- }% X; \$ x - setComp(g, kk);+ r% |0 E/ z* s0 R( S, c& \
- db(g);# D3 u: ]& S3 F/ g, ` Y
- t.upload();- L& L- z8 E* R/ F ]
- ctx.setDebugInfo("rt" ,Date.now() - ti);
# D. t6 U, g0 t - ctx.setDebugInfo("k", k);
% h, C( j( S% k8 l% ` - ctx.setDebugInfo("sm", kk);
% D# L( R4 v- d9 p5 k! { - rt = Date.now() - ti;
) {* e& `" {; Z) I" l j# v - Thread.sleep(ck(rt - 1000 / fps));
2 m& T) d; i1 _ - ctx.setDebugInfo("error", 0)+ \9 ^6 t5 J& w4 D9 A( ^
- } catch (e) {
* B0 M. Z" ?: p& T- ~ - ctx.setDebugInfo("error", e);- }( G, }9 n ^! {; Z* f% g2 T1 f
- }
1 M4 f* p: z' m- V% r% t - }0 R9 S0 S$ U: ^3 v! U' M; Z# J
- print("Thread end:" + id);1 N5 |6 \3 ~6 I/ b. k' [) k
- }3 T0 x3 B2 V& p$ a
- let th = new Thread(run, "qiehuan");+ p9 [+ e4 u3 s& l0 Y
- th.start();
$ x/ e* s0 R9 [# v! ] - }
' t. I u$ w: y y, U* W
1 Q9 |# J+ ~5 [0 {( L- function render(ctx, state, entity) {
3 g' S, @& v# n: C# Y. @ - state.f.tick();
8 m+ o, M" q; e$ O# J2 L - }* Q6 }; B& F7 I% e4 r, W
; a6 ~( q' a6 o) D- function dispose(ctx, state, entity) {
+ ~3 @/ ~. c! O/ M0 r - print("Dispose");
8 I4 a+ n" M1 ~; G: Y$ N( P - state.running = false;4 q+ j. G1 {/ i) ^" B% l, `# G+ s
- state.f.close();9 U3 X3 i+ S7 H9 E* F8 {5 K) @
- }
7 X) n- C& A5 R ^; f1 d2 y
: b5 O; j5 Y z" F8 ?( q( o- function setComp(g, value) {# Q# e( C; a Q2 B" k
- g.setComposite(AlphaComposite.SrcOver.derive(value));
# ?& [- ^6 f0 z$ K - }
复制代码 0 a% r: q7 J; f) p1 j1 N
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。
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) f6 E+ W/ O; G1 T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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