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+ S0 c2 \; v4 W/ I! 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。
% T1 W& ]3 |( G; K; m; m1 r- importPackage (java.lang);
6 q+ N7 t: K6 t7 P" k - importPackage (java.awt);% f2 o5 h, \* ?3 A; B, f
! p& n* O2 c8 ]2 G9 T+ Z- include(Resources.id("mtrsteamloco:library/code/face.js"));5 M' L5 G Q# |
- - v& u+ M& u, ~# d! @. Y! O/ Y
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);: R3 c0 ]7 |* s3 k6 F. o
) U8 T! z5 t/ A* |# Z9 i) ~- function getW(str, font) {
4 P; b3 G! l" v - let frc = Resources.getFontRenderContext();, {( l1 g, H0 M
- bounds = font.getStringBounds(str, frc);5 Q; z3 N+ {0 ?3 W7 i
- return Math.ceil(bounds.getWidth());( I* K/ s+ ~5 I, j2 G q
- }8 \, t4 x$ ^$ L o$ K! ]& h7 k/ V
- : e/ q- n- a8 g5 B# K" g$ d, Q
- da = (g) => {//底图绘制 w% Q/ q+ V* n" F6 v, W
- g.setColor(Color.BLACK);
& ^6 c% U& \4 s: } - g.fillRect(0, 0, 400, 400);, s8 f5 P4 k* r3 w+ a
- }+ Q( v! f1 ^( G1 V
- 3 U7 [# ^" Y+ D' Y7 c6 ?* G' ^3 R
- db = (g) => {//上层绘制
+ @. x- ?# z2 P7 Q8 n - g.setColor(Color.WHITE);. R) D8 c6 C8 X& i( q& o
- g.fillRect(0, 0, 400, 400);* I3 Y$ f3 K) L& ~
- g.setColor(Color.RED);& g+ {" Y- r) h
- g.setFont(font0);9 X2 t d/ N# V5 Q, v+ r$ m7 f: Q7 \* `/ y
- let str = "晴纱是男娘";
) A) n7 {; _7 t/ |( ] - let ww = 400;& }4 P6 h! c# P
- let w = getW(str, font0);! A, M! E( G1 |
- g.drawString(str, ww / 2 - w / 2, 200);( K, v2 B' V. a9 m; {) l
- }
P" x9 h$ p' k8 L; @' C
2 B- m3 V2 ~! p0 I: V1 s- const mat = new Matrices();
8 ?6 K2 ]7 @" K" ?9 B! i0 ~ - mat.translate(0, 0.5, 0);4 I7 e) A5 [, D1 X7 s
2 u2 W A; P- |2 E3 g- function create(ctx, state, entity) {
, C5 k, x8 f' I - let info = {
2 [# I c. @% P - ctx: ctx,+ v' w; x: n% c; b: y% l/ l
- isTrain: false,
6 ^9 V5 H; x$ ]9 d% C$ j - matrices: [mat],
$ C d* d9 p, F' `1 F - texture: [400, 400],9 A: a; f1 K9 X( l
- model: { W& I# z2 {. @3 ~5 D
- renderType: "light",% T! b3 N E# |
- size: [1, 1],9 V) Z) `' w Y7 v# ?! }& f* d
- uvSize: [1, 1]
+ B7 {- E4 q, [! U/ s1 U - }
9 f" i) i0 r/ I! x, O8 S" {1 o$ l - }! y' z3 L/ x7 A) K1 |/ N9 P# H J- h
- let f = new Face(info);/ i, d9 {1 E. k0 p) n
- state.f = f;
) V" O5 r% ~. N+ K% r( W4 G. N6 V( ]
3 h Z5 A* L5 e3 h; x% C8 C- V- let t = f.texture;0 D2 z6 r w: S4 t& F/ \2 ^, ?
- let g = t.graphics;0 P) i! t$ R- m' }' t8 T
- state.running = true;
$ {! ?: L/ Q) P4 O0 [ - let fps = 24;. \ `5 J$ m& P9 H( C: [/ ^
- da(g);//绘制底图) D- I9 n+ a) D" ~9 n" u4 K. n
- t.upload();, j& `' \ o4 f
- let k = 0;6 R9 y; f7 P2 S+ Y. X, y7 Y
- let ti = Date.now();
4 Y, ]- R' O9 i - let rt = 0;
8 v, J6 A) h5 M- T% m - smooth = (k, v) => {// 平滑变化/ S1 B) T. S6 V x
- if (v > k) return k;
/ P7 o0 ]& _! e2 h( \' }9 B& ~ - if (k < 0) return 0;
' t* s% c6 \- t. ] - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
4 `' N" M( W0 r1 g - }
) C/ G; M" \0 G7 l - run = () => {// 新线程; `! w( q8 ^- c) D. t. ~
- let id = Thread.currentThread().getId();; c$ Y! ]: U' b" C
- print("Thread start:" + id);) U/ _4 y" Y5 _0 r" T/ _$ G
- while (state.running) {- C2 N. o& Z; J
- try {/ i7 g6 U5 T. e% B6 V ?3 Y; o
- k += (Date.now() - ti) / 1000 * 0.2;
; f+ b1 u8 B0 ?0 h - ti = Date.now();5 E% [" g( Y& h
- if (k > 1.5) {3 m# f* j. ^* q- t# S) B
- k = 0;
( d! M3 U0 b% @( H' _: k3 Q, O - }
: w' Y. ~- e3 ?4 r: }! ?; B& E% Y - setComp(g, 1);" T# T. K, n& Q0 M
- da(g);( E0 _& p! g- e; z& ?4 l
- let kk = smooth(1, k);//平滑切换透明度8 L& C9 V$ U6 p2 j" x, W1 z
- setComp(g, kk);! Y, r0 v! d/ I9 w
- db(g);
+ E$ P, B7 X- ~/ c0 h$ \ - t.upload();( w* x9 {1 d/ ^, P9 @) _
- ctx.setDebugInfo("rt" ,Date.now() - ti);
4 N4 c( H% h5 t, M - ctx.setDebugInfo("k", k);) s' N, K2 j' o
- ctx.setDebugInfo("sm", kk);6 U- M. c7 ?6 k: E. N8 m
- rt = Date.now() - ti;& h, K! [' f8 ]/ M2 C9 Z& [
- Thread.sleep(ck(rt - 1000 / fps));
8 f( [0 `' b8 P% v& T; ]/ z7 k - ctx.setDebugInfo("error", 0)
& {: U+ M( `8 B+ \% D0 I7 P - } catch (e) {
0 I- Y! z3 G$ j* d9 U% Q - ctx.setDebugInfo("error", e);
$ B# [& E$ t. x1 e- {* ` - }- s+ m- d. o- Q" K
- }
7 v% i: N+ N* d! T% V" Y - print("Thread end:" + id);1 l; H3 j7 |6 C* W/ {
- }- i5 Y2 w2 z- {
- let th = new Thread(run, "qiehuan");& I3 \/ m( U; E1 Q) h; S6 m8 T
- th.start(); s: m$ c2 V+ r* I7 y' q
- }% G& @6 I# z I$ c2 o, b6 L
- 3 p' j7 o2 u# S g0 S/ m
- function render(ctx, state, entity) {5 K) F0 q8 z$ f2 a
- state.f.tick();( ^( o8 J J7 o2 j7 }, z4 k
- }) I% m( M7 D5 V3 u; Y6 T
- ; d8 u6 W9 ^. X+ @
- function dispose(ctx, state, entity) {
- U1 v) D0 M' K w$ k - print("Dispose");
! R& F6 d$ x( p$ D1 v' q - state.running = false;+ _0 I. C! z; ?
- state.f.close();1 k# t$ ^* i7 c
- }
) ~2 H- ], t6 k8 I/ E# i- i: B5 T8 O - 8 ?" z3 \8 G, O* ?3 y6 z& ^8 V6 K' {
- function setComp(g, value) {
5 _2 ], T# S2 ^9 [1 H% Y - g.setComposite(AlphaComposite.SrcOver.derive(value));: L9 v) @. ~+ i; x# X. c2 }. }
- }
复制代码 6 N$ Y, O9 [. ^* M" R* 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。
! L& c( H4 \: P5 E& Q: |# \0 [/ q0 `. v d( e. o* a( i3 Q
" U ^4 K8 B8 R顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下): ~ }& K8 ]* p
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