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1 @8 T0 v% s4 I, }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。
7 W8 k {6 Z5 \ X, }; x) X- importPackage (java.lang);8 v! @' A3 ^) U Y3 J
- importPackage (java.awt);- L* N: Z, {: t$ L* D
/ L. D0 I# ~, h- include(Resources.id("mtrsteamloco:library/code/face.js"));+ _ S- v! ~, C0 i* W
9 e# {0 G* g# Y' r- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);2 {& v3 G3 r$ L9 q5 b6 Q
; I5 X- R- K# O. Q% \2 b- function getW(str, font) {# F% ?; e" h& _7 Y! n
- let frc = Resources.getFontRenderContext();! @& Y7 J, j2 h" K& z6 I: B
- bounds = font.getStringBounds(str, frc);* }4 w2 R# ` ?. a
- return Math.ceil(bounds.getWidth());- } v5 Y2 u; |0 v1 b' B3 t% y
- }, P1 t6 p% o L0 e( U
4 ?, H" `( v. |* u0 C" d( v- da = (g) => {//底图绘制: z/ L! }) d, d" x( l1 M+ M; `
- g.setColor(Color.BLACK);
- W$ i' A: H7 g+ K! p% @2 p: d - g.fillRect(0, 0, 400, 400);9 e$ i0 L& d, P2 H8 g6 v. J* K
- }
2 z S: V1 ?8 Y4 `# T1 _+ ` - 9 Y4 E, y+ u2 K4 m& h9 J
- db = (g) => {//上层绘制1 \+ O- L. S: T& u9 H# g2 x2 a t
- g.setColor(Color.WHITE);' n7 {2 }1 `! g/ f- j- L& z
- g.fillRect(0, 0, 400, 400);! T* i7 Z* U' c- o& x8 L; i
- g.setColor(Color.RED);0 N( Q4 n' g+ ~+ X: Z C! ]4 M' d
- g.setFont(font0);' }. e" L' J7 m- Q; z
- let str = "晴纱是男娘";* E U, g+ _, u( p: B
- let ww = 400;1 u* c& h- p6 _) R5 z
- let w = getW(str, font0);
! X3 [6 Y) F. ]" w& ~2 | - g.drawString(str, ww / 2 - w / 2, 200);1 E) k1 n. X# r. J4 [+ ?
- }
+ Q1 e$ l# N! L! s
* v7 h0 a% x& B, U- T# r9 A- const mat = new Matrices();1 [9 k: O( ~. {
- mat.translate(0, 0.5, 0);+ n/ R( s0 N; J6 R8 E) X+ }0 a
9 y. g3 C, U1 E& |+ A- function create(ctx, state, entity) {0 h4 E- x7 q8 Z5 _, G T! g3 y7 k: a
- let info = {
8 P4 \" e6 \$ t- g' v+ n - ctx: ctx,
& k2 ]' `! A6 h( j/ ~- c - isTrain: false,3 }1 a7 C) m6 W7 k7 F. d( H8 x
- matrices: [mat],
; `1 e$ Q9 e2 q, M - texture: [400, 400],( B0 ^+ K8 w6 r$ r% T
- model: { h4 p1 E1 _3 f: F, U
- renderType: "light",- F, }7 k" a7 \
- size: [1, 1],$ ^0 ^, `3 I5 j/ q
- uvSize: [1, 1], G3 ?4 W8 Z. A$ D9 {
- }
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- let f = new Face(info);& H: Z8 ?* U- a+ u0 _. u2 h8 w K
- state.f = f;
* W$ E/ R; e5 ] - 3 c5 e1 P; K; h5 _8 `5 @" f
- let t = f.texture;* C9 ?6 {! @6 V9 W; R8 M5 ?
- let g = t.graphics;
( X" b- k3 ^# F3 y5 x - state.running = true;
6 t6 ]. _7 D. I2 F/ |/ L0 h, z - let fps = 24;7 F2 M& Y- z6 z; o2 g$ ^' P* _
- da(g);//绘制底图
& v! B/ }1 s8 c; ~ - t.upload();
+ R: H. _2 W$ W" X8 H2 N" H) k - let k = 0;9 w: V! L* T m
- let ti = Date.now();
* K. D+ A: s" w$ j+ y ~7 N' { - let rt = 0;: k7 ]3 K7 w% \& \1 `
- smooth = (k, v) => {// 平滑变化
& E1 [; f* z% T! h - if (v > k) return k; j7 X [9 Z3 u! R5 o9 T5 U
- if (k < 0) return 0;
) V4 Y o3 w& e% [5 R, W% j9 U& C3 } - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;* A0 X. f, }+ W) f& o- U
- }
2 }. j3 S& @6 Y- i% v - run = () => {// 新线程- n9 A' e! K" @* p
- let id = Thread.currentThread().getId();, V- _9 b' T4 G) O: v& k7 l& O7 ?1 O- d
- print("Thread start:" + id);
& S. O0 F* {6 R! O4 t7 n1 @4 S - while (state.running) {' D* y; O6 J) R; v1 a1 _# L' O
- try {8 T/ Y" d* s! C$ C4 K1 c
- k += (Date.now() - ti) / 1000 * 0.2;, d/ P& `+ w) z0 T# n$ I
- ti = Date.now();
" Q6 W" Y5 `2 d% R - if (k > 1.5) {
) v1 U8 n! M! T& T( x - k = 0;% n8 [2 P" W5 C9 C% {( R# t: d
- }
, T" v! C' `6 |8 Q& D- [. b) M T - setComp(g, 1);6 F5 P, }; b3 h" e4 K: ?
- da(g);) }1 i/ ]' w8 M2 U
- let kk = smooth(1, k);//平滑切换透明度" S5 P. I/ G2 E. A% D; k- m- y6 Y
- setComp(g, kk);. H: p3 R }, I- b
- db(g);2 X8 {% U; T/ M
- t.upload();% D. m! z& A- r7 W
- ctx.setDebugInfo("rt" ,Date.now() - ti);
+ b; y6 l. J* `, {% | - ctx.setDebugInfo("k", k);
- k# X& g- {" {. b - ctx.setDebugInfo("sm", kk);
- q' j2 I6 m2 I' F! K - rt = Date.now() - ti;" x1 K3 [' o, v7 t, g7 k& f% p1 A
- Thread.sleep(ck(rt - 1000 / fps));
) s# k$ [' F- C2 H9 J/ a' J$ | - ctx.setDebugInfo("error", 0)
- h3 J' L5 Y$ l- Z - } catch (e) {
; k1 W+ p, t6 W8 d - ctx.setDebugInfo("error", e);9 n; |/ T$ \* G: M/ b( K9 P
- }
9 ~" k' W7 U j1 T2 y0 c: S/ ^ - }/ _/ [- P5 [+ i$ L. y
- print("Thread end:" + id);
7 p/ D. O9 u0 T" F$ K! ` - }
6 r/ ^% K& z9 V, P+ @! |( p - let th = new Thread(run, "qiehuan");9 o1 `, i1 P! {! k& {
- th.start();
3 M0 x& Q: F0 G% K6 W r/ r1 g - }3 _) A2 o* N7 X" z% {
$ i9 \2 H& T& H, a! A% y- p- function render(ctx, state, entity) {
/ i1 J5 B! [, D1 o0 l( C" }4 r - state.f.tick();
7 |/ P& T- M8 H0 n - }8 v, ~4 ?6 b3 G5 t, e) V! }/ A/ {
- . U R, q6 z# ~
- function dispose(ctx, state, entity) {& E7 h3 A& V5 l4 j# d
- print("Dispose");
: T* w8 v/ g: ^) v3 K$ t5 o - state.running = false;% u6 R$ I& J! m" Z' S* U
- state.f.close();
% y2 q8 o; j Y - }: [$ W! Q8 \7 ~/ }
- , I% K- O3 ~7 @4 Y' p
- function setComp(g, value) {
; k# X Y& g0 x2 P" V9 t1 h - g.setComposite(AlphaComposite.SrcOver.derive(value));
9 n% j! n8 j" M# S - }
复制代码
5 w. M2 F2 X9 J7 U. w0 I0 ]% u- {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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