|
|
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
×
- g% O# ?1 W& o
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。
3 S5 s# {/ w' D. M2 e- importPackage (java.lang);
j0 \7 n3 e: D& X - importPackage (java.awt);8 `1 d8 |9 S, A; K1 L
3 G& h7 ~6 A5 L3 X+ x0 F# O) L! h2 g- include(Resources.id("mtrsteamloco:library/code/face.js"));
4 ?7 N! `4 S# h D, j D& P2 ` - : c. m. s) Y3 [
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
0 W8 p, Z6 {# P4 G% v7 N1 _5 I
! H# I! F3 y. h, e( e8 Q9 V- function getW(str, font) {/ C7 O5 S5 D8 K+ W
- let frc = Resources.getFontRenderContext();5 ~3 L. J Z* W/ o* S- b- j' @" N7 L
- bounds = font.getStringBounds(str, frc);$ r' k- y1 n. T4 ^$ e5 {* J
- return Math.ceil(bounds.getWidth());
, {5 L' M i/ o& B5 O1 o' N3 x- H - }, c2 L% @& H: y) ~
w# P# b! |" c K) Y- da = (g) => {//底图绘制
6 z; Y2 }/ r% X6 U1 J - g.setColor(Color.BLACK);7 P5 A" L; P6 b% j: Z; X; T$ z9 `. r
- g.fillRect(0, 0, 400, 400);7 g o: B1 D; g$ _7 w
- }
; z- n t# O' E. y8 \4 Y, O0 m' u - & y0 @! U4 i6 y7 t8 @! O
- db = (g) => {//上层绘制5 T' z: H7 ?- p
- g.setColor(Color.WHITE);+ _! Z+ v4 \/ ^- R
- g.fillRect(0, 0, 400, 400);' X& Q( O! z% v" a: l* k
- g.setColor(Color.RED);6 x7 o5 R3 a. j
- g.setFont(font0);
0 L* a) g; P8 B5 o$ N+ _! Y - let str = "晴纱是男娘";1 @! H; G% r' L) N7 @
- let ww = 400;* d( i# D6 t: C7 N7 |2 _6 y6 r
- let w = getW(str, font0);
& {* F: t& {9 i, y' C" R, v, D* M6 P - g.drawString(str, ww / 2 - w / 2, 200);
8 Z5 k' R) s" |# U/ Z- E. W5 a - }
0 g8 Y3 V* x7 \- W/ B
0 [' }2 H8 ^& Q* [. N A- const mat = new Matrices();) U9 y* ]4 g y+ { p/ w
- mat.translate(0, 0.5, 0);8 e( [* a! J$ V7 Z5 V8 p7 ^
- $ Y) }( \: \3 V5 @- K7 i- K
- function create(ctx, state, entity) {
Q8 f! ]' W! s* q! G" ^ - let info = {
+ W5 |$ M1 m3 d - ctx: ctx,
% a' c2 I7 y/ e, \" a/ O - isTrain: false,' M' u @" v) F
- matrices: [mat]," u& x4 p9 |% E7 c. w& k9 B6 D) E2 H5 N! ~
- texture: [400, 400],; ]; K" O- U) M. k. [! I6 F: f$ V
- model: {
8 D1 v5 o. {2 ], n: U$ n; ]5 v - renderType: "light",' N& P) v7 o5 U0 P. e3 B3 O
- size: [1, 1],7 y Z+ V) j$ y( a: g
- uvSize: [1, 1]
3 z3 z0 K0 J! B% p - }
$ \2 }. q& _( Y - }7 o. }! |; \& e0 X# c
- let f = new Face(info);
2 m/ \* @6 }& f% O1 O; n0 f - state.f = f;
! e/ I* S; ?) h+ T) I, V - " u) F4 Z2 ^* E D2 b3 [( e" Y( L1 R M
- let t = f.texture;
6 ~! T& d/ N) I% I& H/ m - let g = t.graphics;( f. B* H, Y2 y' N' h4 G" N
- state.running = true;
, j) x$ j7 u; T" ]8 ^3 m - let fps = 24;
/ J f" W" w9 L7 C - da(g);//绘制底图/ O0 O2 [2 ?3 w3 v6 O; j
- t.upload();8 |! I) b% U8 V* }; x7 C' Z* g, r$ R
- let k = 0;
2 X: R+ [# T4 s- A2 t3 |$ N7 ?7 q, g4 p# q - let ti = Date.now();0 s/ N- K; J: i: j0 {3 A
- let rt = 0;5 r( U: ?8 y0 u0 c6 c
- smooth = (k, v) => {// 平滑变化
1 {1 I; ]9 G7 e" h. R9 { - if (v > k) return k;
9 c3 T, D6 s! _- h3 u O0 \' T - if (k < 0) return 0;
8 g9 m3 L M9 M( a8 M7 P0 B - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;, [: K8 @. @+ F2 U) F, m, r4 ]# F
- }
* U( ?1 F1 J* p$ a2 ?/ b! J T! h - run = () => {// 新线程& e v# z" m. {! t% e& Y+ I0 ?
- let id = Thread.currentThread().getId();& M& W6 E- n/ T, f, L( G
- print("Thread start:" + id);
! Y6 ^0 ]% b# s7 H1 \' E( Z" b8 z - while (state.running) {- G s" a) X% g: F, I8 W
- try {3 }, I8 P6 \: o8 M
- k += (Date.now() - ti) / 1000 * 0.2;
5 ]6 O! c" {% [: ?9 G - ti = Date.now();$ p4 x" l7 J1 W, G4 @
- if (k > 1.5) {& X/ E- c% {" W* x) i/ n$ l& f$ G
- k = 0;# Q5 x* [& Z# I' ~0 x6 P
- }8 P$ X+ T' w# _9 O- |( q" l
- setComp(g, 1);
N; @: m7 ~( Z' |- M% Y( D) ~3 o - da(g);5 ~- X* T- h: F8 v8 H
- let kk = smooth(1, k);//平滑切换透明度
9 I& v% ^9 [8 [- g - setComp(g, kk);5 V" ~5 h4 m, P. P
- db(g);5 ^9 ~/ [3 l. K% A) R9 q# S, R' C, {) R
- t.upload(); }4 v# x+ A5 A6 ]8 L
- ctx.setDebugInfo("rt" ,Date.now() - ti);
% s+ \1 G1 w% _7 Z" z8 S$ p - ctx.setDebugInfo("k", k); U% x# k9 R: m" a4 b
- ctx.setDebugInfo("sm", kk);
I& R' T0 s3 ~- M. A( b - rt = Date.now() - ti;# q4 Z3 b0 |& @
- Thread.sleep(ck(rt - 1000 / fps));- e0 D' G$ h9 O
- ctx.setDebugInfo("error", 0)% n! _6 I9 h: G+ g
- } catch (e) {
3 V' O# U# ]9 J: w2 J - ctx.setDebugInfo("error", e);
; N7 v0 W& D' u, i0 r, N$ n - }& U. ^: C, A5 N
- }
$ t2 N7 q1 y8 o) L! F - print("Thread end:" + id);+ c" l' C' a6 K1 B: s3 r7 O2 Y, j
- }
3 v1 }9 D& P e2 T# w - let th = new Thread(run, "qiehuan");
5 ]( S$ ]- G4 [1 h n - th.start();. V. f; z) i8 k
- }( w9 t2 p! g2 a+ I
! l7 F4 C% Z5 J( |- function render(ctx, state, entity) {
! X. V6 b$ }. v; r- K% W - state.f.tick();1 g$ x: }5 d7 E6 s" `- I9 y
- }, M# G. M! h' P3 I7 d
- C$ r; D6 e+ b l ]& A; m- function dispose(ctx, state, entity) {# M8 U- l2 _1 U2 ~) ~# R; u
- print("Dispose");
9 j7 U( H( G2 A3 s% a - state.running = false;
: C6 Q% e# m3 v6 _ - state.f.close();9 X* d n% Y* D5 { q6 b
- }# o; I; }3 T& @" K/ x8 J$ u
- : f/ r$ I, k: }: x
- function setComp(g, value) {
' A6 n3 |1 w& I: F - g.setComposite(AlphaComposite.SrcOver.derive(value));1 u! g( L8 F3 r. A- \, J! C, h, l
- }
复制代码 : a8 ?; \* \1 I3 ?
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。
9 R' r/ A3 u" X" Z1 O. U
5 a( N" S% P& H' M2 y5 i
' z3 k* O U" L6 a1 s h7 `顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
, ]+ R8 z- P% ^2 o J C( ~0 T1 J |
|