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: T' E- k4 `4 a+ z/ m+ |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。0 l1 W4 q/ ?/ k" X! I
- importPackage (java.lang);0 Z0 l4 v: P6 E" Y5 g7 p) }
- importPackage (java.awt);
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8 p" `6 h" p2 b- include(Resources.id("mtrsteamloco:library/code/face.js"));! {0 R1 i# Z2 l1 T
- " l4 M# ?; |/ D
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);) ]: v. Q* d, O! e0 P- s! p
" Q3 i8 ?3 p M) |5 {- function getW(str, font) {6 @# w7 q8 \9 R+ B" ~$ X
- let frc = Resources.getFontRenderContext();+ ]" V; }' o7 S& P- N( B: H3 s% A
- bounds = font.getStringBounds(str, frc);1 ?5 p) `% C" Z" I" M e
- return Math.ceil(bounds.getWidth());! ?$ @1 `0 |' ~9 F0 M4 Z" H: e
- }
: T% x* c7 r R0 b( w5 d" ]& g
2 H0 t* x$ b( [4 p- da = (g) => {//底图绘制
; h6 |2 s% e' @* d0 S$ q - g.setColor(Color.BLACK);* ~6 ?* c8 t) \6 J5 m f! V8 O
- g.fillRect(0, 0, 400, 400);
, u7 ]; F5 M) s* U - }
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- db = (g) => {//上层绘制
! G9 e, C- f1 A: p, U5 x - g.setColor(Color.WHITE);
; o. o; J% Q+ f, y' j, Q5 g7 { - g.fillRect(0, 0, 400, 400);
& n4 x9 ^/ |( u3 V7 ?6 c - g.setColor(Color.RED);1 p: `% K' X; ?% Z
- g.setFont(font0);
3 z( X# m* P) B8 Y& D2 \7 O0 M* c4 L - let str = "晴纱是男娘";
& P: T* j; t% ?/ Z+ N" }1 ^" ] - let ww = 400;
, V" B* _* }+ C* y t7 q - let w = getW(str, font0);) I5 {; Q0 w& C3 G9 _( D
- g.drawString(str, ww / 2 - w / 2, 200);
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, U5 T9 v" U& b) V) a- const mat = new Matrices();0 y( `# |: q) I1 n' {; A& }- V
- mat.translate(0, 0.5, 0);
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8 B, `7 ]4 O1 ?! B8 c5 X- function create(ctx, state, entity) {' v9 E4 B8 e# { Y, R
- let info = {
+ I0 {. z# C) k1 w/ [( ` - ctx: ctx,$ Z' S) X' r* i }
- isTrain: false,
1 O( M4 R* x. w1 i- F( Q& N7 b* j - matrices: [mat],
. }, \* P( ~4 {: g4 p9 @% i - texture: [400, 400],+ Y. ^9 h9 u3 i n: S2 u' c- A
- model: {
: b3 r# J. A1 n4 \+ N3 v6 a( e - renderType: "light",
* _4 P" ?7 @' @; V8 U9 G - size: [1, 1],
0 B; V/ h: o9 a9 p - uvSize: [1, 1]/ W3 G7 e) q' x
- }/ @- s; ^: v: ?# J( f
- }% Y; E4 y6 w- ~7 A7 r2 ~1 N
- let f = new Face(info);
; D/ ~( j+ E/ J3 p! _/ g - state.f = f;
- D' ^4 e9 M% {* l3 v, ]
# s2 a& d- F% K* Y- let t = f.texture;) h9 A4 R8 t3 r3 Z
- let g = t.graphics;; y) c( J3 k6 U/ X4 \( a' p
- state.running = true;
, E9 M+ R1 i, Q0 I( e# m - let fps = 24;
6 I1 R# N9 O% H# V1 V( q - da(g);//绘制底图
) y2 k; a/ P# |1 U) O - t.upload();1 M+ n# [4 d' B& t0 M
- let k = 0;
$ t4 G; l. [+ V) H6 I1 p* W - let ti = Date.now();
7 [* x6 L4 H& S - let rt = 0;. l, O$ m9 v0 V( V0 Z. F
- smooth = (k, v) => {// 平滑变化
: c. M B4 e5 ^: E - if (v > k) return k;
: I( ~8 [; @" L4 ~9 d - if (k < 0) return 0;
% e+ b2 }. S0 h - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;3 s( i- T! I3 w1 t
- }5 O5 m# y2 c/ B
- run = () => {// 新线程: ?* N: D( z/ `, r" J! k8 K9 V( i* C
- let id = Thread.currentThread().getId();
+ }: Q7 M( c! u) C - print("Thread start:" + id);
4 I' |( N+ m. w Z2 ~, r - while (state.running) {
* D" W- ^8 @7 O' L; b$ w - try {
+ K8 z( t! j9 W+ ~, E - k += (Date.now() - ti) / 1000 * 0.2;5 F8 E" ]; u8 i) A+ Y3 `# J
- ti = Date.now();
: Y, S' }& v8 E8 K - if (k > 1.5) { w# F8 x0 X' i3 Z3 y: p7 `
- k = 0;9 h1 G( D2 k H- [ D; |$ n1 @& Q* M
- }
! M- p! ~( ]7 J) k/ _9 m1 | - setComp(g, 1);
8 K3 O8 S; O' [+ c' H - da(g);/ o- u- S2 }1 k7 F
- let kk = smooth(1, k);//平滑切换透明度# K6 t5 h2 Z" o! C
- setComp(g, kk);- P! I" \) k4 s% l8 P$ J
- db(g);
8 s; A# M) A* p& }1 Y* y - t.upload();
! f; R. |4 F3 Q+ G' y - ctx.setDebugInfo("rt" ,Date.now() - ti);) F; P7 Y! F6 h( o3 T' E1 a
- ctx.setDebugInfo("k", k);' |% D# }. [& b3 v/ @. U1 W* o
- ctx.setDebugInfo("sm", kk);
2 u- p$ i( J+ c) { - rt = Date.now() - ti;7 J0 ~: G( ~0 d
- Thread.sleep(ck(rt - 1000 / fps));
# {4 l( h0 ~% K4 B( o& j6 \ - ctx.setDebugInfo("error", 0) ~* W3 O$ V3 O' ^2 ` @0 C, C: N
- } catch (e) {
5 p7 w6 t' O, @, m* W! W7 b2 D8 F - ctx.setDebugInfo("error", e);; f5 I6 G( E j f
- }3 f! F$ V: [# B% {6 x
- }
; O J" f, ]* n. n - print("Thread end:" + id);2 C# g9 P& R% l
- }4 b N U1 N! ~5 q. S, V
- let th = new Thread(run, "qiehuan");; h% m8 m( U6 L% M% G. @
- th.start();
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- 4 \5 t2 k& Q$ O, V4 t6 l) u
- function render(ctx, state, entity) {7 s, h, b' E) w; }2 d
- state.f.tick();
. @+ {8 C. m* {9 a: u6 Y - }
4 e( ?, x' i2 Q: n( _& o
: T3 }0 ~) W. \# m# U- function dispose(ctx, state, entity) {
$ S6 N7 x. r0 A/ b' Q6 s$ a) Q - print("Dispose");
3 l; \$ z- w2 c' i0 G - state.running = false;5 ]9 P5 H( ]7 ] x v0 e8 N5 ~; e
- state.f.close();
, ~( O. M/ P l0 A - }
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$ G+ Q: @0 U3 Y* c. b6 u- function setComp(g, value) {. a! N$ p" l7 p9 f5 {2 ^
- g.setComposite(AlphaComposite.SrcOver.derive(value));
8 l% m; N6 E8 W5 n( z' x - }
复制代码
0 U/ o8 B" n* x1 K1 |1 C) K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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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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