|
|
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
×
: Z, g# D9 E/ ~
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 a, T% l* {# z* d0 w2 h
- importPackage (java.lang);1 W3 K4 l, t: F# y3 p! Z
- importPackage (java.awt);5 o, |% m \; v5 N
# \/ c$ @4 \7 t" O0 `& A- include(Resources.id("mtrsteamloco:library/code/face.js"));
9 Q1 i" J+ f7 ^" D
, o# j* ~$ j+ h* G, x# C8 p- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);. c% |" H" G) N! ^, I
- * Y+ C; `. Z' i% K) j9 r
- function getW(str, font) {, |4 z9 b2 D3 g) W+ m5 z' C
- let frc = Resources.getFontRenderContext();; s' B& o M/ F/ ~5 @ k# s
- bounds = font.getStringBounds(str, frc);# L; A: y, X5 s( I) L* w2 W
- return Math.ceil(bounds.getWidth());
- V, f% d1 L/ j, p* i7 Y( I3 ? - }
0 r# M A$ J3 w5 N2 o9 _* F+ D5 j - n1 I9 q1 c0 Z6 t# W4 A, t; K' d
- da = (g) => {//底图绘制, j ~( X& y' |/ j& o' b
- g.setColor(Color.BLACK);9 N! D4 V' I% U7 F: a" t A
- g.fillRect(0, 0, 400, 400);
! N8 }) Y& v( Z" q) _, W - }
, O' J6 M& J, L- J3 ~; l, }, p - {, y" t; \! |" f2 j
- db = (g) => {//上层绘制
6 c: y* i1 \; a8 T. t+ }; R7 t I - g.setColor(Color.WHITE);% R$ G% l( G. u) O( w
- g.fillRect(0, 0, 400, 400);0 H5 b6 L4 x5 m* a% V8 a8 P- A1 ^
- g.setColor(Color.RED);
% u8 R3 l* g+ d1 N& I, _ - g.setFont(font0);
( J L* |9 H6 } - let str = "晴纱是男娘";+ \3 X$ q: \1 {
- let ww = 400;1 t* L; h3 {$ l" I) l/ l
- let w = getW(str, font0);
0 g) a8 X: D% {% k - g.drawString(str, ww / 2 - w / 2, 200);
. [+ R+ k) Y: x* ^$ _ - }
4 X: L/ }2 r4 J# I - 4 @) H$ z# Y, i# \
- const mat = new Matrices();9 b5 f X, x* e) @. W
- mat.translate(0, 0.5, 0);4 s/ O& E5 w1 ~+ W+ u+ N. v9 y
- ' P6 a/ S8 L7 T* o- G/ m, q
- function create(ctx, state, entity) {9 w. o3 z1 Q+ B. Y. e
- let info = {0 V9 P& g0 H4 p
- ctx: ctx,* t5 x/ p. t$ N
- isTrain: false,+ J0 N! S t+ @% z& k9 ^3 Y! u& m
- matrices: [mat],( d& b- x0 b5 e8 _
- texture: [400, 400],
5 s1 E$ ^: ~; | @. d& N - model: {' l$ Z) Y, R. l" M. x/ g
- renderType: "light",& y0 Q5 r' E/ U8 m- |( ^
- size: [1, 1],* M) m& l: s3 {% Y) x+ t
- uvSize: [1, 1]
' V' @2 T w5 i$ w* g) { - }
2 X$ C; b4 a' T( z9 L6 U3 { - }
2 |! u" v& G. g/ K4 g. d) b# M- a - let f = new Face(info);
; R$ n* z7 k$ ? M" t - state.f = f;
$ i* M3 f( V& I( t: O - 4 Q+ u+ n& L/ T' t2 |6 S
- let t = f.texture;
3 H+ a" {6 a- m' s9 ~ - let g = t.graphics;
* L: |3 L4 }8 z. _ - state.running = true;
5 g0 c5 I `$ [ - let fps = 24;
$ i7 R, t) `" ^ - da(g);//绘制底图( o( u; J- _, I2 L& z G
- t.upload();
5 Y2 {) X0 w% N6 s) A - let k = 0;
8 ~0 n; L$ g# P - let ti = Date.now();! V/ X3 \6 a: Y; g+ i
- let rt = 0;; z/ `" O' f6 G7 H/ Z# Y! w
- smooth = (k, v) => {// 平滑变化, y# |* r- C% ]+ E k
- if (v > k) return k;
! W' w! @% u$ V$ ` - if (k < 0) return 0;& j! ~3 y! i5 _* L( R& u
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;4 I$ E0 k: y. J! u
- }* n' ?7 a, ?+ ~/ B- N9 V
- run = () => {// 新线程6 B& L8 }3 s9 D! Q! e3 w
- let id = Thread.currentThread().getId();3 I: y/ M' r/ d! l; j
- print("Thread start:" + id);, L# {; D* |; q8 S; Z
- while (state.running) {) Y; i) x3 ` G2 M1 g2 s& o: I
- try {
% R" r4 A1 i# r# R8 d - k += (Date.now() - ti) / 1000 * 0.2;
" p. c9 ]! Z% ~- A7 ` - ti = Date.now();# Q; w4 W4 P! O; K! C7 {: X
- if (k > 1.5) {
1 H8 W$ b, h5 O) K# Y* Q - k = 0;
1 M8 a2 [6 M3 a; X2 K* w - }
0 T, v! O7 ?9 h, [3 o - setComp(g, 1);* Y+ i6 a: M7 j% Y; n% y2 @! ]
- da(g);
5 { j" b) y% z* Y5 V5 l/ v* M - let kk = smooth(1, k);//平滑切换透明度
3 E( f9 q% | X2 b+ N o% k - setComp(g, kk);
, E' r6 f% Y, ^: D$ } - db(g);3 H) m, o8 f: k& A
- t.upload();
/ z& a. h, O9 x - ctx.setDebugInfo("rt" ,Date.now() - ti);+ U) g/ N/ O' T% Z x& W9 Y, l" o
- ctx.setDebugInfo("k", k);7 |! _: b8 v- t/ C
- ctx.setDebugInfo("sm", kk);3 @ d8 p6 N2 T
- rt = Date.now() - ti;, j0 g# n! L2 A+ w( ~% [
- Thread.sleep(ck(rt - 1000 / fps));5 n2 z4 g% T9 a* P
- ctx.setDebugInfo("error", 0)4 Y8 D% F' g1 C# W" i
- } catch (e) {
2 a' Y) G, J+ M+ r - ctx.setDebugInfo("error", e);. n9 P% v/ @* S s4 G
- }4 x" U' l* ~1 p
- }- O. H3 ?* \) h) d% w
- print("Thread end:" + id);
* U# s6 K o2 B# M$ r8 g - } I' r0 e9 o; Q
- let th = new Thread(run, "qiehuan");
! }' N5 b& ^3 D3 @% f - th.start();, a" ~% j n0 \" T
- }
$ K# q% C- @1 [! m) }" D
7 w5 C! l8 G4 P- |- l- function render(ctx, state, entity) {
- `" H7 ^* I6 a' Y/ g+ J" H2 b - state.f.tick();+ M0 k' F: Q3 d3 p- ?& H4 U. p
- }. ?, r& Y7 H; R
) D) U6 N3 J I, `" f% }; c# q- function dispose(ctx, state, entity) {) U+ Z7 }4 g U* S9 }( M2 n5 X8 T) a
- print("Dispose");1 s p9 T, S m4 I" T
- state.running = false;9 ~4 t: R- f$ M
- state.f.close();* Q, c# m# w- t( y
- }6 z+ a$ n* K* t* o- `9 {5 v
* M& S! }: h: n- function setComp(g, value) {
. `5 ?4 R# d" B - g.setComposite(AlphaComposite.SrcOver.derive(value));
% I; ?3 e- _2 ?+ ~8 O. [2 g - }
复制代码
% {1 R4 x9 g: k! O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 A" r0 Q7 N1 v4 l
8 Q+ M8 f7 a) [0 y7 o4 T
; ^: V9 d" n; ^) B) d+ z2 B. n/ u) 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)4 X+ n9 z) k4 \4 M+ f
|
|