|
|
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
×
) i* Q- h7 P, b4 V h( q3 q4 @ j! g' 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。6 X7 ?) A; p, \$ L
- importPackage (java.lang);: i* M* n. A f8 a1 h
- importPackage (java.awt);) n& k W0 E; h4 Y' ]
+ G2 m0 n1 Q& ]; l/ B- include(Resources.id("mtrsteamloco:library/code/face.js"));
# W) w) T) D5 d8 W- W3 [' M9 `: {
2 K4 h, c, I* B# P0 y- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);( f3 W2 |0 r0 S
6 U1 U" b+ N" C+ t; o2 F- function getW(str, font) {
7 p% p0 K4 s* \" f3 [ - let frc = Resources.getFontRenderContext();
, R& b4 ^, f5 Q" I. U$ T - bounds = font.getStringBounds(str, frc);0 N" n6 _$ I6 W1 D: W
- return Math.ceil(bounds.getWidth());
# L. V; G; \) o( K' E' ] - }
- Q- o Y b6 T% X$ E5 Q& G
4 ], [) m) s) m. ?' o- da = (g) => {//底图绘制" G5 i: @+ ?4 @# t* \# V/ X
- g.setColor(Color.BLACK);
% q( M2 ?1 ^' r/ F& s$ {# k: n - g.fillRect(0, 0, 400, 400);
! e3 Y: P# A. \ - }0 H& h- i% A* W* m
- 7 C( [8 s+ @) o0 G. K
- db = (g) => {//上层绘制9 N, |2 G ], v' S- J1 a2 @/ f
- g.setColor(Color.WHITE);2 c2 x* v' ~! \ u: u" N$ m+ d
- g.fillRect(0, 0, 400, 400);* E% a, p8 M# t) r
- g.setColor(Color.RED);$ C" S9 Q `9 @9 D- l
- g.setFont(font0);
: w* S( l$ X* u6 [* n9 e - let str = "晴纱是男娘";
& L# ]: z3 w/ T. c3 y) ` - let ww = 400;
& K p) t2 R/ y" a# N - let w = getW(str, font0);# d1 y; w/ ~& o) [8 n+ n( O. H
- g.drawString(str, ww / 2 - w / 2, 200);
5 j! H5 N; J9 u _# G Y, B- F8 Y - }3 d! j, R F5 ?6 Z
- * U- e) B- \. O; B
- const mat = new Matrices();% e% F- H: Z' M9 O
- mat.translate(0, 0.5, 0);
. ?& D1 ~: T3 B+ H) Z
4 p" a. H" A) X& |' v" ^ t- function create(ctx, state, entity) {4 x1 R4 l9 u6 ]: A$ \
- let info = {; p0 d: X: Y8 H& h( j
- ctx: ctx,
_, B5 k: m) N/ g; |& C( ?: V - isTrain: false,
; _" ~0 C" ?! d - matrices: [mat],) }9 I" y' C5 w* Z, F! Z
- texture: [400, 400],
& m) O4 J% U1 d, Z - model: {8 P6 I* D! O/ B+ T4 g# H- B) r
- renderType: "light",
8 z6 o8 E! N3 C9 D - size: [1, 1],7 k t6 n/ e- l' Y) R. L% D
- uvSize: [1, 1]
8 Q$ f& ?7 @( W# h h$ b f - }# P; a+ [9 F: p) L- K
- }( W# P# o, G+ c) s1 w4 w
- let f = new Face(info);
1 [ R6 x% W1 r! x" f - state.f = f;) U. U& J$ F' ^4 @ v" G+ R
- * \* G' i+ B/ g+ h
- let t = f.texture;
- o& d* ^3 Z& e( U* }+ e& q - let g = t.graphics;1 G' O* \6 l8 ^
- state.running = true;- z5 E! v& S' M- W
- let fps = 24;
+ C" I, @; w) q2 M - da(g);//绘制底图+ I- z7 X* h5 M) j
- t.upload();. y5 M( C! p) [# e
- let k = 0;* \& K# M$ M) p9 D
- let ti = Date.now();
4 g: q& f! V$ o3 N, P/ e7 H- M - let rt = 0;
/ P% _) J0 J. b6 w4 w - smooth = (k, v) => {// 平滑变化2 g& E0 r7 h) T( H( p6 f4 y
- if (v > k) return k;6 L" a! r$ y# E# h' F7 ?
- if (k < 0) return 0;" X' R' f! E& b8 `0 l9 H
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
: t, z3 Y' G2 A% V' N7 P' b - }' S+ }8 Y$ A0 Y& R8 [
- run = () => {// 新线程
2 y6 [$ O& U' Q @) [ - let id = Thread.currentThread().getId();
3 Z# _; p3 s: X! G - print("Thread start:" + id);
# u. U0 u; A1 k! H8 w7 T" n - while (state.running) {( K9 _7 s, v6 w; I! r1 g( Q
- try {
# z' ^5 `2 w: a o8 y - k += (Date.now() - ti) / 1000 * 0.2;1 s; M9 \5 t: B1 y; X+ [
- ti = Date.now();
. O, X8 U% _" Q* }+ c - if (k > 1.5) {3 P' b* F% x% S) w H) k
- k = 0;& j, k1 I- E! J- C$ H/ ?
- }1 v- `% C- L- O1 p
- setComp(g, 1);
) _1 o+ E$ h) f - da(g);* w/ h9 h) L: w+ ~& e! Z" C& s, i
- let kk = smooth(1, k);//平滑切换透明度; |+ `& ? ~" ?7 U$ C
- setComp(g, kk);# k) F8 V- V& i: ~$ V( T5 r
- db(g);
: \6 ^4 V' u5 f, A - t.upload();9 U& Q, q- ~ s" F( D6 H: a
- ctx.setDebugInfo("rt" ,Date.now() - ti);
2 f1 |( }: C5 b$ \3 e. Q - ctx.setDebugInfo("k", k);
* b- G/ y$ W4 ~$ M - ctx.setDebugInfo("sm", kk);! b2 F m& A" N% }5 |, B
- rt = Date.now() - ti;
- v4 y2 @# }. _8 i9 W, o - Thread.sleep(ck(rt - 1000 / fps));" [/ A$ ^$ [/ c, @) t, U3 f# r
- ctx.setDebugInfo("error", 0), a% i8 F" ]/ t& h
- } catch (e) {
/ A; q* { e! d - ctx.setDebugInfo("error", e);
- X$ h0 [4 V9 Z5 B# O# x - }. W6 j! A1 W! D" q) n& K
- }1 T6 d( `) Q* O" Q9 I6 r( [
- print("Thread end:" + id);4 ?4 b8 g) R: {! L! ^
- }
5 V' d1 ~9 W& t4 r7 X c2 |$ G - let th = new Thread(run, "qiehuan");
% e- J( l$ Q: {2 u - th.start();) G$ A8 D$ @5 w' H( Y2 I9 I* w! j; X
- }/ W7 y: E4 h! S5 I1 p) f
- 3 M W- K1 o( i6 v* B$ ?) l ?
- function render(ctx, state, entity) {
e' G! ?; E" `, t - state.f.tick();* p9 O" j3 ?, O3 ~0 ^
- }/ Q6 c+ v* @. q z, i
- 1 O- D: F2 C+ M0 `% k# T
- function dispose(ctx, state, entity) {
8 q+ y) m8 n" u6 M - print("Dispose");6 w8 t. a( ]. ?7 @
- state.running = false;
. Q' I* H5 y; i, W - state.f.close();
% S% g0 c Z O( ?, [2 c - }
^( o! W ^0 M" \: I- A - h, O' m9 b, G" R/ r5 D
- function setComp(g, value) {
0 c8 ], z4 ~1 {4 Y" _ - g.setComposite(AlphaComposite.SrcOver.derive(value));* x8 g; R/ l0 m$ V% `" z& ^
- }
复制代码 " Q7 h3 z' j/ v1 E
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。
' |" {; p( Q& t {4 p
3 w. K9 M$ T, e& C7 k, q
' `3 U: z' @6 A# `0 W顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
0 e: e8 |' ^: Y- { A |
|