|
|
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
×
. @, e3 e5 ^7 m" M/ N; `
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。( D6 _# ?( T4 v$ z$ F
- importPackage (java.lang);1 Q9 S# P9 M: ?3 ]# [# j
- importPackage (java.awt); s- o% ~4 p: D4 O0 E
6 ?7 [$ r5 V3 K: L) E& ~: |- include(Resources.id("mtrsteamloco:library/code/face.js"));* F$ g. q5 z: V
9 y" ^- R+ J$ u: o" ]6 ~- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);8 O4 I+ S9 `6 `
- 1 l/ i* } n9 m& N3 m& L' [9 K
- function getW(str, font) {1 p8 g+ i, t; q+ u6 Z# T% |
- let frc = Resources.getFontRenderContext();2 C% U2 Y6 r# e0 ?
- bounds = font.getStringBounds(str, frc);; U% g, z5 W. F. R
- return Math.ceil(bounds.getWidth());4 ]7 `' Q8 J ?
- }6 T2 e' s: O/ P; H
; u' I, y5 R# I2 [9 @- u$ N" N* a- da = (g) => {//底图绘制7 n' k2 u0 Z( M. L
- g.setColor(Color.BLACK);/ ?& D& h% h! b- [6 c
- g.fillRect(0, 0, 400, 400);
9 o& B! |! Q% Z - }
' i! p; a9 b" r' j
' k5 c6 e0 X' r* ~2 ?% S& i- db = (g) => {//上层绘制
4 m8 g+ a$ G# \; V - g.setColor(Color.WHITE);# z; ~7 w9 V/ j- n- W0 G1 D9 G
- g.fillRect(0, 0, 400, 400);
# b* d( R6 ?6 J# V- L }! Y+ E - g.setColor(Color.RED);7 T8 g- s- ]" L9 o: c
- g.setFont(font0);% X5 I; y. [. l! A2 Q
- let str = "晴纱是男娘";
0 J1 \, P& M6 E) `2 { - let ww = 400;0 j# B! ~4 }* X
- let w = getW(str, font0);
' K+ K" i6 C* P. L1 p& W - g.drawString(str, ww / 2 - w / 2, 200);# h) {3 z2 Y1 t9 J7 K
- }
- H. }3 y- t" E4 D
4 L, k, @& }/ F) R6 K9 `: r. \- const mat = new Matrices();- l+ ?* O0 t8 x2 J! s
- mat.translate(0, 0.5, 0);: ?5 B$ N) d, y& T6 {$ R0 [5 \( y
- 3 C4 q/ m7 F% B
- function create(ctx, state, entity) {7 A3 l# z3 A7 Z) X. n4 Y9 Q
- let info = {
0 _1 u5 i! V, U3 [( A - ctx: ctx,* ~) }0 q; Q9 v" [5 K7 \
- isTrain: false,; p4 `4 P. D+ R; a8 n. t
- matrices: [mat],
. T2 P' v O" ^( ]9 Q9 P/ h: {$ n, g - texture: [400, 400],6 ~' _) @5 y! n# N& P' {+ p: D# G
- model: {
& \4 c9 Q2 }- ]# A; a - renderType: "light",) C/ E& @4 O8 O% ^
- size: [1, 1],
, K7 c" ~. F% ~0 i6 i - uvSize: [1, 1]
8 S: d. _, I8 s* Q6 K9 t - }
; u+ h" X) F: V$ o7 C+ } - }
( [6 J3 T0 u2 t, J# r% F u( d; m - let f = new Face(info);0 j" P; {( O# S9 y0 ^) k5 V! _; k/ F. u
- state.f = f;
: }: P9 s7 t" I# B% P G4 B) _ - 1 e8 s* ]0 c, i9 ]6 d
- let t = f.texture;
, j' d# `! t: t* a" L3 U0 r" F6 [ - let g = t.graphics;" S0 \: R7 S6 X
- state.running = true;
8 I# s: e2 j6 s* R7 z - let fps = 24;8 }$ t7 K" p7 M! M& c" e
- da(g);//绘制底图
4 B4 E0 f: s4 E. ~ - t.upload();* A- u9 q8 j' b2 P8 r
- let k = 0;$ h! j6 ?$ ]4 L8 h5 d4 a) U1 _$ j# g
- let ti = Date.now();
7 @/ k1 A, V; Y) r$ O. B' p4 n - let rt = 0;' R1 [# G# Y: `0 S4 ^; N
- smooth = (k, v) => {// 平滑变化 j& x4 z) Q/ G
- if (v > k) return k;2 d0 C! j! h1 E" X! ]+ l
- if (k < 0) return 0;+ j. N, ^' v: H5 T7 a3 R
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;/ R H9 Q) y; k7 i
- }
. Y. P, @- K/ ]! @" M! ?8 J - run = () => {// 新线程
. j) V3 Q3 L1 [' z& p; E - let id = Thread.currentThread().getId();
1 L) K8 L2 Q& r. o0 ` - print("Thread start:" + id);5 D& l; z8 F4 c1 V
- while (state.running) {
" k# Q5 c7 m( L* q - try {
1 U f2 E1 h2 X. } - k += (Date.now() - ti) / 1000 * 0.2;2 Z3 A% i \. K" H- W
- ti = Date.now();0 s# X- C# S! d
- if (k > 1.5) {# Z3 u5 l& R& h: Q" k2 \; M3 B, {
- k = 0;
4 b1 M% n- }. {8 l8 s - }( `7 y6 ~" o1 d) t/ }( Y5 [
- setComp(g, 1);$ {4 ]& L! C& ]9 g1 N+ \+ ^# w
- da(g);* X0 Z2 B$ }, @9 d
- let kk = smooth(1, k);//平滑切换透明度
1 M: E+ S$ q) E5 T# r3 u - setComp(g, kk);* e7 F# s8 A$ L/ Q, O" O! ]
- db(g);& _+ E! B2 Y" B& m- a2 t. N/ K
- t.upload();) o d8 l6 ?' Y0 \8 N+ X
- ctx.setDebugInfo("rt" ,Date.now() - ti);- Q5 w% O; O1 K
- ctx.setDebugInfo("k", k);& H" Y8 u0 @% J8 @# v' P `8 V
- ctx.setDebugInfo("sm", kk);
$ t' |% c# _1 y4 @ - rt = Date.now() - ti;
1 C6 ^. S" @3 Z3 U H$ N$ ]$ f - Thread.sleep(ck(rt - 1000 / fps));
u) z$ h; }# m1 Q- o - ctx.setDebugInfo("error", 0) @+ F1 l* f X) f$ V1 s1 P' c
- } catch (e) {
7 U2 l; h% a2 A2 w& T - ctx.setDebugInfo("error", e);; }4 y3 W6 V+ {2 r! H. i
- }
' L$ d# }3 H! n3 _3 b ^# y* Q! S - }
1 _: d5 f" a9 C% d. O - print("Thread end:" + id);
7 W$ z" E) _2 Z& W1 Y3 R# ^ - }
9 Z( Q; J7 V" }) a, q1 M - let th = new Thread(run, "qiehuan");' K1 N. U) ?: U' h7 _+ K
- th.start();' y$ X8 C' ^2 D) z& g
- }- G* ^$ b1 I1 U- k3 ?
- : w' E. H0 w* @& |
- function render(ctx, state, entity) {
& e0 S2 `2 n6 n% t) g. A4 z - state.f.tick();
: H" T1 z* P# ^1 R; ]" p6 \' d - }' \* i" _: [8 ^7 D$ t i
- ) l ?2 c" Q5 T% W" u0 s
- function dispose(ctx, state, entity) {
0 V0 l$ y% o7 B1 K* ^' ?: _8 _ - print("Dispose");* t0 F, r; _8 T
- state.running = false;. y# x. u5 N7 `" L' {
- state.f.close();
+ {' @: u1 E- w' e- N' o. ^ - }! v% e$ D+ B( x0 M! J! d7 y# v
9 _9 F$ N4 {" P8 x' h- function setComp(g, value) {/ \. r9 `- w) J' R7 S
- g.setComposite(AlphaComposite.SrcOver.derive(value));: |" @2 E8 M% o3 P
- }
复制代码
1 F0 ~( ^- u! \# n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 V: s8 W$ |; w9 v: e
; [5 z% @( }1 ?; ?: y- L1 O
0 w+ @, B% t% I4 Z: Q) i5 K顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)% A# X# N- q7 I
|
|