|
|
还没有账号?赶快去注册吧!
您需要 登录 才可以下载或查看,没有账号?立即注册
×
l [3 [1 [0 }) R& `# x5 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。
# S) r$ h3 `! R3 N- importPackage (java.lang);
# T8 F: w2 t' s! X Q- | - importPackage (java.awt);
. W0 z6 f9 [ I; B0 L
1 [ j% p2 J3 a- include(Resources.id("mtrsteamloco:library/code/face.js"));( K. E8 h+ I/ f
- : \0 o2 q" n& k3 S$ }/ U0 V
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);0 x6 f$ P! N4 D' N* ], U
4 a# S& H& ]( t$ L3 ~- function getW(str, font) {
2 v2 q, k3 l. M& N b - let frc = Resources.getFontRenderContext();
9 f2 q& b1 W7 m9 w( V: n - bounds = font.getStringBounds(str, frc);
9 I: v) R9 q# I$ G3 p6 V - return Math.ceil(bounds.getWidth());
& V, [+ {; _0 L: V) z - }6 g- \ `" A+ }, m: S% |- a! J
3 A+ `% [9 B, A/ C5 D- da = (g) => {//底图绘制1 _) ~& ~- b! i9 Z
- g.setColor(Color.BLACK);: M* L! S8 `- D7 w* Q3 q
- g.fillRect(0, 0, 400, 400);
3 B n: ~! E+ m0 E, C0 {) N! C! Z9 u1 d - }2 Z F! v9 d6 P2 t6 d- _) d
- 1 A3 k3 `: S0 V3 m0 o' x
- db = (g) => {//上层绘制0 L* Q" k3 T% d, I
- g.setColor(Color.WHITE);
$ h8 ]- D+ F1 e - g.fillRect(0, 0, 400, 400);/ g! r3 G0 ^ x+ F
- g.setColor(Color.RED);8 e) V3 U( u5 ?
- g.setFont(font0);
# z5 c9 E S8 x, [ - let str = "晴纱是男娘";
+ G& Z. k0 k3 @) u8 N6 m - let ww = 400;) p) k8 U1 A. k/ W: Y+ H
- let w = getW(str, font0);
, j$ u$ [- p8 E* z; d" f7 z - g.drawString(str, ww / 2 - w / 2, 200);; A- u" T& \2 i3 s3 i3 h
- }! N5 E/ a$ L+ `
- 7 G) o5 ]/ m8 U' y: w
- const mat = new Matrices();$ h i) v% R& L. E; B) s |
- mat.translate(0, 0.5, 0);. R c. Y% z2 }
* B$ r' v5 Y& z+ F) ]7 h- function create(ctx, state, entity) {
8 Y r P" z [) _7 _$ W! l - let info = {
8 a4 F; W1 j, n0 H- W6 X - ctx: ctx,
! l8 P7 J- v; K# Z# U - isTrain: false,
% m1 a1 a/ V5 s, ?( |( h - matrices: [mat],
|% |) }: n' l: f) O - texture: [400, 400],2 f; L' }) g6 e
- model: {
" Z! L: a4 a, C - renderType: "light",0 \5 C/ d- j: G1 A0 X5 r0 ?6 w& {
- size: [1, 1],
+ l$ B' s% }! g% u' d' L- y - uvSize: [1, 1]
. K1 W' j% o, _- `3 ~9 r - }- b" C: y5 |# q* C
- }7 a K5 g' \* S3 l
- let f = new Face(info);( C9 z4 N; ?( t- z6 z
- state.f = f;7 w' e' }* x6 B
- * r4 s! b. O) p; g8 z+ O
- let t = f.texture;" \1 h! f- b, `, J8 ?: P! H
- let g = t.graphics;
2 G! O$ _) G' W - state.running = true;7 T; Q* v! |1 ~
- let fps = 24;
2 M1 f# e# _' W: g) a! e7 _( b - da(g);//绘制底图
# k. f' V/ J, \2 j$ Z$ {: o% z# v a - t.upload();8 p% d8 N# J) i8 V4 G3 n% Y
- let k = 0;
7 R; Q0 q% g! ? M5 } - let ti = Date.now();
: N2 R& \0 g2 e" N5 G! s/ A0 S8 h, ` - let rt = 0;
: K x# ^0 n9 g) }, v# R - smooth = (k, v) => {// 平滑变化
7 M6 q" K8 [( I7 N - if (v > k) return k;
4 ^0 n$ v" P3 r6 ?2 z - if (k < 0) return 0;- M$ c) X* r& \, A. y) z: N
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
4 c) v6 [* Q. A3 g6 n, U - }
/ p% M* F/ _ a' ~ - run = () => {// 新线程/ B/ B& E( [( K0 |9 X9 F
- let id = Thread.currentThread().getId();
9 l+ W; v `. _" J! n - print("Thread start:" + id);
3 t6 D2 s" e, P9 T9 j - while (state.running) {
' g0 Z. u. O) Z* M9 \ - try {
: s) x" Z. u& x. P+ D* N" M - k += (Date.now() - ti) / 1000 * 0.2; ]( J D/ P$ R# _
- ti = Date.now();
, q3 Q: t& h- V- M: |: R, @$ U" F - if (k > 1.5) {
8 i% m, b k5 k3 J+ } - k = 0;/ X) _" X. h# y
- }
( g2 z; I- z& H6 U8 Q7 P1 J. H - setComp(g, 1);
- a3 w. s5 X1 |: ^ - da(g);2 v6 o+ _% g6 ~: s) ]! B- _
- let kk = smooth(1, k);//平滑切换透明度7 v, {7 ?( l6 w5 x) K. }4 Z& L
- setComp(g, kk);, x. [" z' z" O. x9 U9 z- h# q
- db(g);
9 k: J( Z1 T! y* Q q( S4 B/ ? - t.upload();9 z, v( H. Z e: Z1 T$ U
- ctx.setDebugInfo("rt" ,Date.now() - ti);
: W- j0 O% n9 @+ n ?- H - ctx.setDebugInfo("k", k);" X2 E2 L& }8 s
- ctx.setDebugInfo("sm", kk);! ~7 O$ i, {% E7 s* |% s9 Y
- rt = Date.now() - ti;
# c6 l5 d3 U F1 z - Thread.sleep(ck(rt - 1000 / fps));) j7 y8 X" ~+ _, |( U0 x$ ?4 z; Q
- ctx.setDebugInfo("error", 0)
3 G" G2 o# m7 J+ ~3 T4 w - } catch (e) {) |9 |/ V% L3 c( I
- ctx.setDebugInfo("error", e);, ], V$ i) W; e
- }8 i/ v! Q% Q2 a: J: Y3 X$ p+ \ F2 T
- }
4 P$ { R0 ^5 b3 W - print("Thread end:" + id);7 P5 K3 r; W- Y+ u
- }
! M( q! K. X; }' d0 V - let th = new Thread(run, "qiehuan");+ z5 f6 x& t' h* p
- th.start();- Q: S. o* |2 C5 S r x
- }
9 ~$ Z N2 V7 B2 h - 6 v& e7 J2 {2 w6 p9 S* Q6 Z
- function render(ctx, state, entity) {
* z! B% V# M2 z1 q4 ] - state.f.tick();
) }; W# I# c, n7 U$ C8 f - }
6 a5 i1 Q! W& v0 Q) {7 L# S( I
- `& ^: p% I# Z6 Q; T6 r" q% m2 a g- function dispose(ctx, state, entity) {6 M( F/ j& m+ _8 n
- print("Dispose");* B- }! N, _1 B ~ H* {
- state.running = false;
) O, p, f U) z+ B8 g - state.f.close();
0 H/ m4 ] R0 l$ `! I% p$ ` - }9 Z- h0 f; |# R" h
2 ^8 y( E& h( f- function setComp(g, value) {
8 r, w9 k1 g# ~% q! r - g.setComposite(AlphaComposite.SrcOver.derive(value));
3 w" E) s1 p. v) v6 m - }
复制代码
2 k& y+ I+ F$ o ?6 \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 h6 H! ~" d- l' r8 h5 r, \' W. a5 {( X6 _: R6 P
, T7 {5 h* U/ @) }6 z
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)6 \- L' d1 l1 V1 K; v3 _' `
|
|