|
|
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
×
} J2 Z% k7 S# V# x: y
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。% w- d) _# q- s% V! Y
- importPackage (java.lang);
$ `' A1 ^: z, z# h; f - importPackage (java.awt);
2 [0 ~' s$ r. ^; l - 6 [6 Q. Q- u" ?- U
- include(Resources.id("mtrsteamloco:library/code/face.js"));9 C! O9 j m9 ]2 E$ `
- U9 d+ M. R, e( r9 t
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);* w0 o+ t# X" N7 X
! i: x1 R1 x5 t/ A9 U* j. E3 {5 c- function getW(str, font) {
; a( E0 s9 D: z - let frc = Resources.getFontRenderContext();3 D2 O" c9 b7 o e# `3 {4 s9 n
- bounds = font.getStringBounds(str, frc);
1 ^3 W$ y0 G' z$ R" s2 ?. t0 n - return Math.ceil(bounds.getWidth());+ [9 L7 z6 d- ^5 e/ I0 P
- }
5 ]9 J& I' x3 B" ^7 g1 b# p
+ L7 w- |! `1 N: x& s- da = (g) => {//底图绘制
: i5 }; x1 A* l3 n8 t. m" O - g.setColor(Color.BLACK);
! ^9 w L- ]: e: r% Q# T6 I - g.fillRect(0, 0, 400, 400);
! A! M/ |6 s) ~% k) c - }
& k' D2 R% a% _2 j, m8 E. ~' r' Y - 7 }7 d( P* X$ l' P% E7 B5 Q
- db = (g) => {//上层绘制7 Y& E: n& A* D! j' k2 x$ h
- g.setColor(Color.WHITE);
8 g% F* w/ g H' {! K+ s - g.fillRect(0, 0, 400, 400);: R W" d$ k! t8 V l- j3 x
- g.setColor(Color.RED);+ \8 {5 B& {' c7 D, G- @* q
- g.setFont(font0);
" k# E: M8 e) R5 C% a- g7 l - let str = "晴纱是男娘";7 i! l; B3 j4 G$ w: G
- let ww = 400;2 E" _7 ?4 {; h9 ~
- let w = getW(str, font0);6 e2 |7 y. r" Z7 r: R
- g.drawString(str, ww / 2 - w / 2, 200);
7 j6 g1 A! U) D- D" p( u - }
+ }6 U; Y+ Y. y# N! J1 E - 0 g7 z# K; A5 F& h. ?1 Y
- const mat = new Matrices();. b& H" B/ F" E0 n6 R. H+ f
- mat.translate(0, 0.5, 0);* h% w! a9 A. H2 ~
0 e' ^8 K/ s3 Z$ m% ^* a- function create(ctx, state, entity) {
% g8 k5 U5 L1 F - let info = {
8 k! D9 s8 l; ~) ?' B$ E+ G" { - ctx: ctx,
8 d. m. H, _' h- B - isTrain: false,, @: o2 h: K5 t# ~$ M3 n
- matrices: [mat],9 n; x: W! c/ f' L, U. u
- texture: [400, 400],$ ~2 l7 \- J" [& L# Z9 v3 j
- model: {% U' _2 h3 Q, U
- renderType: "light",; n0 p( A0 P$ K J& |- m8 U- h
- size: [1, 1],
4 J9 `) z" G& Y - uvSize: [1, 1]" ]4 J A* ~" P9 G* x
- } D) T& G; K6 M" F7 W/ X
- }: t3 X/ i6 i7 c, n& v
- let f = new Face(info);
3 c3 E' {: S7 U& B - state.f = f;
' I$ o7 v4 d; y5 q" o: V
3 K; h. G7 a v* a e- Y- let t = f.texture;
& B! g1 C, |0 Z: W$ q - let g = t.graphics;
2 R" U) |( J$ g3 I2 l& B# U* c - state.running = true;7 U! g G* X/ b- A- E
- let fps = 24;
, ?5 S3 o* _- `: D* ?. z - da(g);//绘制底图# f! z Z% u- C7 K0 D. V
- t.upload();: N7 b7 g4 t6 H( u* X9 ?
- let k = 0;
4 s' I. w z0 k - let ti = Date.now();
- c* [& J1 u& `. P6 g - let rt = 0;
' |1 y# Q2 c" E( b7 \ - smooth = (k, v) => {// 平滑变化
7 l: V8 l3 m5 h# v# l+ m) M9 g - if (v > k) return k;
) C9 Q8 o- D9 O8 w' J* j6 N: W - if (k < 0) return 0;& G# @7 e! M# {
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
$ ~6 u& b5 j6 B# U/ }0 l - }7 U; v0 y. U+ y
- run = () => {// 新线程! `& ?' y2 Y0 ]
- let id = Thread.currentThread().getId();& a# Q& P: ]7 E+ g& V3 k$ ^
- print("Thread start:" + id);
$ g0 \8 O4 x& N+ z4 c% k4 ` - while (state.running) {/ l/ C* ?4 T6 M V0 c0 l
- try {) z, ]& v3 u) \9 c2 j/ [3 c
- k += (Date.now() - ti) / 1000 * 0.2;- m6 v0 c# p! M( Y, `( E' f
- ti = Date.now();
/ l! @# l0 d, p% n k - if (k > 1.5) {
+ i, b+ s9 g& v1 C - k = 0;/ v5 g h1 o# `2 V* o) e7 b4 t
- }/ y; W- k) X5 H/ D1 {$ Y, T8 G/ L
- setComp(g, 1);, V6 i+ g8 h" J# F5 t; C% x
- da(g);
2 S V! \: u8 o1 W5 J( j! d - let kk = smooth(1, k);//平滑切换透明度
' @& S2 z3 S$ X p) ~ [ - setComp(g, kk);
! R. X* ~0 I) x5 {4 | - db(g);1 |+ o; B- G+ w# z# F' j1 b
- t.upload();
: E( [4 K! o7 j# k8 p% o$ x - ctx.setDebugInfo("rt" ,Date.now() - ti);& A4 A: O" [6 {
- ctx.setDebugInfo("k", k);$ d* s' y+ H R% i6 i& g
- ctx.setDebugInfo("sm", kk);
# J H2 i- X) W( m; g% ` - rt = Date.now() - ti;
: |5 v6 X! K: O& ?2 k- v - Thread.sleep(ck(rt - 1000 / fps));7 V9 v" t2 y K. H% R7 D) z1 _
- ctx.setDebugInfo("error", 0)
( I8 n. e! L" u. O$ p) _ - } catch (e) {
: c( S5 C& b s- Z - ctx.setDebugInfo("error", e);
/ f; q' O% e6 H5 R - }2 v8 p1 {# Z" @ q# L
- }5 T& G) r. I" x, J7 W$ s0 v( m3 t+ t
- print("Thread end:" + id);! T: M/ h" K# H. t- E% d* ?* i& @
- }$ V7 G8 ]% T4 A: M7 G
- let th = new Thread(run, "qiehuan");9 ]: m$ m6 T4 M7 }2 e
- th.start();, A0 e) l8 ~! a6 ]2 O
- }
; i+ y5 `! G5 s) I
/ M( z& Y: `# h- function render(ctx, state, entity) {
1 S% k' ^2 g# ?! ]( K5 g6 k' m) t - state.f.tick();
( ~$ T3 V2 I: L7 [ - }( f A& f( Q! S; B0 s9 _+ ^
- 9 I z. w5 {# X, H% [
- function dispose(ctx, state, entity) {
6 ^# S& Z* w/ S0 C; R1 J - print("Dispose");
O7 W \: t$ j1 {$ f0 X - state.running = false;% C0 R" u, p% k3 I
- state.f.close();
$ R5 N. h+ K z p: E: @ - }7 a+ Y' `: C( }4 f
- 8 _4 b8 n+ R _. M
- function setComp(g, value) {3 B) W# A# @# e" W
- g.setComposite(AlphaComposite.SrcOver.derive(value));, f7 `! n0 W( H+ z+ X4 n) S
- }
复制代码
+ j6 G! t7 _2 M9 X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。) Y c, U- L# d
) m _* M, q; |% j, Y( |% T# A. v+ A/ Y! Y7 M
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
1 Z; }$ i7 P3 ]' S6 _! l |
|