|
|
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
×
/ n2 o/ B: e- ?3 G2 o2 _4 T) C" P9 f- q
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。
4 U! g |0 w* T- importPackage (java.lang);1 X% [ Q, M U0 r/ D- q
- importPackage (java.awt);1 K# d# V" a j/ H7 k
" d# F8 ~) o, _- include(Resources.id("mtrsteamloco:library/code/face.js"));3 m! r6 C7 Q, K/ p' K
! b$ P( L) v, v- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80); i+ B4 b: y. g5 T4 k
- " C e0 }# J) u4 C t( H8 r
- function getW(str, font) {
; E# W" s5 y+ \4 z' N - let frc = Resources.getFontRenderContext(); W- G- a% V* w9 W$ }
- bounds = font.getStringBounds(str, frc);
+ O2 g! h3 N* M# Y" c$ E# @ - return Math.ceil(bounds.getWidth());
. U0 D1 J. R' J0 y& n8 [- e - }
% z ]9 v( g+ \ i( m
! @9 x9 n# g1 |9 o. c6 j5 U0 u- da = (g) => {//底图绘制
, f9 d& m) j# p - g.setColor(Color.BLACK);
, Q9 c7 ]% n* ]. ~: L0 L - g.fillRect(0, 0, 400, 400);8 A0 I! R6 r) `" m2 N1 d
- }
( P' |5 c: d; U! U: H+ \' A# f* R - : {' C k1 |* w4 e
- db = (g) => {//上层绘制
4 `5 Y. |" j# U3 A6 z+ A8 p - g.setColor(Color.WHITE);
8 c6 i$ T/ z* H" M4 H - g.fillRect(0, 0, 400, 400);
$ t+ z# i. _8 g. S7 ^ - g.setColor(Color.RED);: x7 a$ {. }' W; Q4 @% u
- g.setFont(font0);4 z% o% K; L$ c! z" \2 p6 r
- let str = "晴纱是男娘";" Z( k, q6 I8 K% {6 V9 ~. T
- let ww = 400;
]1 b! Q C; n$ \* B - let w = getW(str, font0);) W8 }1 j. k( a, d
- g.drawString(str, ww / 2 - w / 2, 200);: ^" f* p1 f( F) K+ } ^+ |
- }0 @* q0 g4 T1 K2 s$ @# K
- . r0 w1 N# F6 T P; r
- const mat = new Matrices();
F& m) v& P& j5 O) p% j" A# b - mat.translate(0, 0.5, 0);
6 ^8 \5 J) b) Y( u# [9 b
7 q( P4 O6 q. q% F* }1 f$ a- function create(ctx, state, entity) {
4 \. P$ Z! O( z, `. m - let info = {% O9 J. R8 _; P6 \: b3 f
- ctx: ctx,4 c; X% `. i# C1 w0 @* p2 ]5 m& V# g
- isTrain: false,
, N. v! j& z6 F2 g. U; B {' R - matrices: [mat],* `; _: N, K- B" w N0 }) }0 I
- texture: [400, 400],
4 B3 C4 p$ F1 a/ ? - model: {0 ?6 h. i6 e* y9 q
- renderType: "light",
+ W7 M1 \, Y% K' p - size: [1, 1],
$ h1 S$ K* o& ^; I - uvSize: [1, 1]% o4 y3 y& d- H0 V2 M
- }
6 \) G4 K' V% q9 r! M2 c, z0 f, V - }. `( y! g; P" [9 b8 y) W- i
- let f = new Face(info);6 B" Q- O2 x, { v7 X6 U
- state.f = f;% n/ D# }" ]& h# _
/ U5 V( \$ F5 z1 g; L; ~; I: d5 N- let t = f.texture;* k' X" m: p6 ], J7 k
- let g = t.graphics;
- p; D* j! I5 Y8 ^ - state.running = true;
5 y0 f3 q, o( H6 v - let fps = 24;7 W& Z6 R9 ~- \- X" y j/ |
- da(g);//绘制底图
2 O F) s' v" G u3 i* f( @0 W - t.upload();# n* y* F3 E i* N3 @
- let k = 0;2 i1 M& _+ y# d( `$ f' z
- let ti = Date.now();
$ Z. Y" B& z) b4 [ - let rt = 0;3 g: @2 f$ R. a5 }( S7 M1 [
- smooth = (k, v) => {// 平滑变化7 p0 p' Q4 t5 e) _/ C
- if (v > k) return k;% j2 C p6 X4 f+ G7 [6 T
- if (k < 0) return 0;
, m2 ]3 t, K5 Z - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;+ x; _% W$ n0 X$ C' Q3 N* G
- }- K. g' d6 o! K8 s0 v; k
- run = () => {// 新线程
6 l, c! u( S8 }& o' p" s$ f - let id = Thread.currentThread().getId();- V' F% _0 @' R, x' m6 j
- print("Thread start:" + id);
$ K j* q% h, M, Q+ J3 O& x9 m - while (state.running) {5 l* Z% s% @/ p6 o' r# ~. n0 M
- try {$ x9 ?/ [( D7 P; h* p
- k += (Date.now() - ti) / 1000 * 0.2;
' `: w; P) z5 W M - ti = Date.now();
$ I' _/ @- Y0 C& v _ - if (k > 1.5) { \- f& A1 s( e
- k = 0; K6 v# D; T+ v$ y# r( a
- }3 }, q5 g ~& s9 k
- setComp(g, 1);* D6 N- T, W/ h- s+ G% P8 n
- da(g);# C+ u+ L v- s4 ?9 m
- let kk = smooth(1, k);//平滑切换透明度
5 o0 ~. N" t0 g; z" Y& v; H/ K - setComp(g, kk);
2 ]# h: d5 J, u! p - db(g);
( ~; J9 W( j7 u: m# E' I - t.upload();' G; ]2 w, o( w* i9 M6 k u% Y3 k
- ctx.setDebugInfo("rt" ,Date.now() - ti);9 u+ x9 A5 M4 l: ^* p, t
- ctx.setDebugInfo("k", k);+ r* R3 i- H' b9 {$ B) F6 f
- ctx.setDebugInfo("sm", kk);& D( F, B% F7 o
- rt = Date.now() - ti;
8 ^. e O" P# @0 \: k% x! T9 X) I - Thread.sleep(ck(rt - 1000 / fps));1 D: N; P% R: V, D) L
- ctx.setDebugInfo("error", 0)4 w* p; }& e# X0 T9 r m
- } catch (e) {, q/ P4 X' ~/ Q# q7 I& D5 b
- ctx.setDebugInfo("error", e);1 Z( @5 F" W, f% {' j; Y
- }
) H; m' H/ g* a- X% U# \ - }! d" C2 s0 z; b6 D- f/ D3 g
- print("Thread end:" + id);& f! L& C- y4 P% n q# o
- }4 @9 t5 U8 v! J7 V& q) I% N# H+ V
- let th = new Thread(run, "qiehuan");
# ?. B; c6 n( I4 S - th.start();& y8 E) }( M2 {4 [
- }
" o" V. k$ } f3 i" s/ j: D/ ^8 P* o1 A - ( ]8 ?* Z* W) U3 }9 O3 l5 I2 _
- function render(ctx, state, entity) {; r. Z3 u( h, M# |/ }( q- G0 ^
- state.f.tick();
6 z; I3 @' C9 P - }, |" s% ~* v, s! u
- " @+ T( q! z) ]) [$ p
- function dispose(ctx, state, entity) {
$ g$ z, |, w4 Z - print("Dispose");
0 s5 l+ y) y" a - state.running = false;
' X; f& g7 B4 R; U- N. i) g7 K - state.f.close();# S4 k$ g# C+ K2 S. i g- p; h
- }
4 M1 k1 j) X+ H$ X) X; N) [8 @ - 1 }* D3 l0 k) v: C7 U
- function setComp(g, value) {1 Y( N0 a, k$ x
- g.setComposite(AlphaComposite.SrcOver.derive(value));
* B5 `" l# X0 D" q% t - }
复制代码
& l9 A4 R5 N, U3 I. j5 L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。
3 {0 `6 E# U! G a& [6 u; J% M( i
# {! b: S* q: O2 U, u- U) V9 [顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
' ?7 a' ]) e) y% {# s" | |
|