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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。& K1 b5 k! w) D7 p* x2 W
- importPackage (java.lang);/ r6 z0 X/ f+ O3 S3 d$ j: n
- importPackage (java.awt);) t0 q+ F* ~3 E) n$ b5 a$ _; h
- 8 t9 ~0 V* a5 V! v5 r* t
- include(Resources.id("mtrsteamloco:library/code/face.js"));
" K. A9 f- [( b - ( }5 T- A9 v' ]1 n$ [
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);# r4 v, H9 t% }% B( D* E
- ) D8 \! R, |: M* j$ M3 S/ J
- function getW(str, font) {
! l a- H$ ~4 o+ g9 _# g - let frc = Resources.getFontRenderContext();; h9 u( v2 z7 Y! R* r% S9 X
- bounds = font.getStringBounds(str, frc);/ F6 ]* ~. v/ E3 z8 T
- return Math.ceil(bounds.getWidth());: f* ~- k" w. d6 f4 H, K$ E
- }
- z; z6 ] i [: _( x - 5 P/ C( K: o4 f& Q
- da = (g) => {//底图绘制5 ]5 @' C |3 n$ q7 B" o, r
- g.setColor(Color.BLACK);# |. @- a$ \. i0 i
- g.fillRect(0, 0, 400, 400);
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; ^; ^6 j( G8 S) P- db = (g) => {//上层绘制
. j+ F* {4 y' B3 j1 T) P# I' ^ - g.setColor(Color.WHITE);
. k1 d2 j( N. `- a5 |) A+ j - g.fillRect(0, 0, 400, 400);
% L$ O" o% v: ~" @9 c \# j4 W - g.setColor(Color.RED);: m* c! I! K+ t) u U5 f4 t3 {
- g.setFont(font0);$ D1 G8 b& l; k7 Q& B4 }0 a3 s; \
- let str = "晴纱是男娘";
. I4 b2 z) {) M$ d _" J; ] - let ww = 400;, m' B, f; n+ O' B6 a/ C: Z
- let w = getW(str, font0);/ L0 j: _$ c1 e+ o- H8 t1 f
- g.drawString(str, ww / 2 - w / 2, 200);7 b9 j; X* G1 j1 g, o$ k
- }
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- const mat = new Matrices();; A$ J, \* \6 u6 d
- mat.translate(0, 0.5, 0);' o% ^* N1 H7 }% O0 y
( t& o9 b) h9 Q- function create(ctx, state, entity) {
; L$ z; c2 @0 g) g ? - let info = {9 f0 I, o1 Y3 y* L" `8 R' G0 K
- ctx: ctx,6 M6 m# [3 Q: @( X: [8 X2 \) i9 l
- isTrain: false,
3 d& T' Q, S* s% ] - matrices: [mat],8 l$ S2 \2 W }3 \- I5 s: N
- texture: [400, 400],
/ U+ p1 o0 Q5 J& h - model: {
+ l( D# L) n7 T7 H$ E; [! H - renderType: "light",5 O* t. r" S; s
- size: [1, 1],& C% ^5 X6 ?# T( t3 |
- uvSize: [1, 1]4 J H* F1 L! m0 H3 g$ ]6 ~
- }+ |4 G% g% T% O
- }* _5 j) M2 g3 i7 Y! i
- let f = new Face(info);* h4 H0 E# @" o: n
- state.f = f;( D0 S0 @, U7 [- A
6 p4 o' Y+ d, y7 J/ `4 i- let t = f.texture;# f& l( o5 d- s- W' z2 I
- let g = t.graphics;& m% `7 y0 ^! M& X
- state.running = true;
) X4 w* ]5 q `7 [# \ - let fps = 24;
: e+ D! B8 B7 p6 o$ y - da(g);//绘制底图- O/ T6 `. u+ `4 X S! p/ f, L' z
- t.upload();) {9 T# d+ |% i
- let k = 0;
$ w) W" A: E c7 M9 E- z( m - let ti = Date.now();
$ f2 N4 {3 @8 e/ c' o2 }3 ^) r2 C$ @ - let rt = 0;" {5 h- k8 E/ P0 E$ j+ m( a
- smooth = (k, v) => {// 平滑变化
" f3 p# a0 `: k! J! o0 v - if (v > k) return k;/ L9 ]7 z2 G( a, B+ _7 s: I
- if (k < 0) return 0;
! ]' p. `/ F. B3 u( _ - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
, ^6 T/ \" m/ B! v' O - }1 O5 w4 K3 m) f9 v r# [0 d8 J/ y
- run = () => {// 新线程
3 I" x; L0 ^/ [ - let id = Thread.currentThread().getId();5 T3 T: } D8 ]+ t- N; ~3 _
- print("Thread start:" + id);
0 I' ^' k4 a) m$ p$ G7 c - while (state.running) {
, ~0 o7 ^- t0 w/ g7 M L - try {
$ m* O; U: {" M% G - k += (Date.now() - ti) / 1000 * 0.2;
6 T% R1 F0 N& s- G, |2 L( B - ti = Date.now();
& h# N, A" ^( A$ L2 i9 S - if (k > 1.5) {1 ^3 U& V7 r0 h" d" ^" h+ h
- k = 0;
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- setComp(g, 1);
. K! [ \+ Q9 m# a' |) R - da(g);7 B5 m' {8 ]* P/ K) {6 H! o
- let kk = smooth(1, k);//平滑切换透明度+ G' `7 T6 [, `+ M! H0 P/ D
- setComp(g, kk);
0 h5 i7 L9 b; W - db(g);
& p+ y) G, O+ E8 Q3 G - t.upload();+ Q; V1 X& P( ?3 |% }" f8 N
- ctx.setDebugInfo("rt" ,Date.now() - ti);
$ Y* T& p+ n0 U) \/ Y* y3 ?* ] - ctx.setDebugInfo("k", k);0 h4 k+ p) p/ ^/ N9 ^6 r
- ctx.setDebugInfo("sm", kk);7 V& J. O" j$ z& s6 [0 M. I, C
- rt = Date.now() - ti;
: K* a$ d1 j9 W. n/ B: X - Thread.sleep(ck(rt - 1000 / fps));
{+ j1 ^) ~( c& H% e3 O - ctx.setDebugInfo("error", 0)/ s: U9 `9 y) s* n6 Y4 W
- } catch (e) {
8 R$ [( r- P6 h' B - ctx.setDebugInfo("error", e);
$ a8 R1 R) u3 A - }, Z9 v6 w: m1 E$ C5 M w
- }
$ D0 E2 Y, Z$ f( B$ {; L, Q - print("Thread end:" + id);, ~ }$ E5 v$ e0 [* W! I
- }
1 B( G. K! V" c$ k3 T - let th = new Thread(run, "qiehuan");8 l8 _* _, X3 e+ j
- th.start();
' _7 D, w: k3 _( W4 L9 T - }/ u% } {, M4 P6 o1 U
% u# S% E, T( j- function render(ctx, state, entity) {
* `& p7 m: ^6 K; O - state.f.tick();
& t$ Q- u4 K, W2 T0 j - }
9 ^' b8 G; b2 d
3 P+ f ~; g8 [6 J+ t- function dispose(ctx, state, entity) {
; T' W4 ~5 N$ Q1 {7 p$ p - print("Dispose");
q" o6 [& C0 f# j" P+ t9 t) f - state.running = false;
& |# @0 S1 w1 x7 R0 J* w - state.f.close();% B3 S* l; l6 N: d; L& `# M
- }# O; D$ f) y* v9 i. J
$ B# q) s6 X5 z# v3 e( [' b! T- function setComp(g, value) {7 T3 I4 f! i5 N2 s
- g.setComposite(AlphaComposite.SrcOver.derive(value));
3 ] n) @, \0 k+ v/ _7 o - }
复制代码
# m. d% B [7 D `3 u( c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。
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! h# {6 S( D" z+ d; p0 M3 o顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)" ?( z" A" j2 U. \
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