|
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
×
" U! ^& v& I+ z! U1 s0 a, ~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。
# S: ^; [! o( q6 t% a( Z* N" N5 @- importPackage (java.lang);# H' r+ q7 B& Z) X: |
- importPackage (java.awt);# w% m; r( C: B
- 2 w# H4 A) s5 k
- include(Resources.id("mtrsteamloco:library/code/face.js"));$ t0 G: `% c- S, Z
- ' a, {3 p" c0 u
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
2 P$ ^, E" F" A. {$ v6 V6 d - : k( L' `* I7 I# h! O# `
- function getW(str, font) {& H! B* B1 b! T% s6 [0 V; \: l
- let frc = Resources.getFontRenderContext();7 l4 O3 w, c. C/ C
- bounds = font.getStringBounds(str, frc);! V/ H% j6 j" O4 }* Z1 |+ T* R
- return Math.ceil(bounds.getWidth());3 x9 H' _6 u( Y) @
- }( _9 L5 ~4 K0 b
- - G2 k- Q, S2 w! u1 P
- da = (g) => {//底图绘制1 ~, ^$ ]/ t ~/ X, r# L
- g.setColor(Color.BLACK);
) ~- Q2 g! x; _' A - g.fillRect(0, 0, 400, 400);
5 E4 e" o+ _% _3 P. t& D0 o - }3 B% q _1 k( {9 q, P6 C
/ d; \- y ?+ q; \- db = (g) => {//上层绘制
8 }& p8 Z1 A' E- j - g.setColor(Color.WHITE);/ g* Q1 ~4 Z) E- |
- g.fillRect(0, 0, 400, 400);
1 C9 | ]2 c6 o/ s) J8 J - g.setColor(Color.RED);0 ~6 [8 C% B! x [2 b5 z+ A! I4 u
- g.setFont(font0);
$ g: n6 ^* x0 U; A. K - let str = "晴纱是男娘";
& M* R( B' M% T3 S# a" ]. _ - let ww = 400;$ a/ e& V J/ }/ _4 t* ^
- let w = getW(str, font0);
* u x; B2 q) b: I - g.drawString(str, ww / 2 - w / 2, 200);
9 E; m8 P6 N7 X - }& Q9 L: \$ E- }: m$ `0 w3 ]% z
0 w9 e: t0 r6 G3 `0 P- const mat = new Matrices();
; f$ \. g" A2 U5 B - mat.translate(0, 0.5, 0);3 h+ d- R" w0 C+ f+ g6 Z$ }1 l+ x
- ) ]8 p! L, @/ v7 d% ~6 P! E9 B0 q
- function create(ctx, state, entity) {! N) E6 q: s9 T4 G
- let info = {: K: P: D) j! } I
- ctx: ctx,
8 N, {( }1 a$ D. ?% P - isTrain: false,& ?* M( n' }6 b+ e6 B9 ^+ @
- matrices: [mat],) O& ?/ y. u' z, U( d
- texture: [400, 400],9 `! x' W! ]1 E/ B: C, D
- model: {4 u9 {) o& {& {4 }& o" Z/ e
- renderType: "light",
* E; S' h& a9 J% G( Q6 P8 } - size: [1, 1],# G% O, `/ Q9 _, x9 u
- uvSize: [1, 1], y9 G, \5 O$ Y- r, w
- }# i5 C6 n. C$ x
- }: l5 c/ D& P+ M M0 {5 f/ t( }
- let f = new Face(info);
% R# a6 |5 e- g8 ~ - state.f = f;0 j' d' c7 P# G) R9 K% F) X
- 6 m6 b& m! G }" {2 g
- let t = f.texture;
. w! L4 C; T) d - let g = t.graphics;4 s" \) n6 l4 J5 i- R9 G6 _+ y
- state.running = true; {2 x8 C9 K5 B9 C$ @2 s% }- K
- let fps = 24;2 ]- x+ l n3 U4 w2 y4 J
- da(g);//绘制底图
" |5 V4 S5 s/ l4 X# n- q6 p - t.upload();- h( f& x+ A7 A7 x& P: K
- let k = 0;( z" J: ]- g. H4 U. d$ c
- let ti = Date.now();& y/ N4 x h1 R$ i, @
- let rt = 0;
3 G$ }7 M( {, U5 b4 R% ?& f - smooth = (k, v) => {// 平滑变化
. s, \. H. w' |1 x* ^; {" t - if (v > k) return k;+ m* `) i: G1 G( P {& V. V; }
- if (k < 0) return 0;3 g) G: o$ Y1 K8 ?6 m3 I! E8 T
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
; o5 v/ U/ Z6 R3 v# \/ o - }& l' v2 c7 g8 S) {! C4 P9 m0 c
- run = () => {// 新线程
* X a: d1 X. D. o# ? - let id = Thread.currentThread().getId();
4 j( u7 ?3 \) O1 W, c - print("Thread start:" + id);1 ~+ u* z' X$ m9 O! b! \
- while (state.running) {9 o+ d; G) K3 D9 k2 }$ H* d$ j
- try {
( F+ P$ {! G% M. k8 m+ q f1 N - k += (Date.now() - ti) / 1000 * 0.2;
9 r n! w- ~$ i$ z: h% X - ti = Date.now();7 m0 n- j X$ l$ N6 B" e( k
- if (k > 1.5) {% v$ X+ S$ G& Q) d. E. Z" P
- k = 0;3 L$ L! S7 J" E: f# ~: c" Q
- }
& v& f8 ~+ z; B- J: p$ I ` - setComp(g, 1);: C* e* Y0 ^, c# H9 `
- da(g);8 T4 S a3 H0 x/ ~+ g1 g/ j4 C
- let kk = smooth(1, k);//平滑切换透明度
3 R) }7 P9 W, _, @ - setComp(g, kk);8 n4 k) B7 q P4 C2 w
- db(g);0 e1 z5 |: P0 j; m9 F" ~: Z2 _2 d
- t.upload();2 s! }* B, J0 x8 ^
- ctx.setDebugInfo("rt" ,Date.now() - ti);6 f1 o6 T- ?+ _5 U4 u
- ctx.setDebugInfo("k", k);
/ _+ B# j7 c$ A7 X - ctx.setDebugInfo("sm", kk);& m$ T0 k; M; j* `
- rt = Date.now() - ti;
5 J1 u+ R% z/ [0 Z8 e& ^ U - Thread.sleep(ck(rt - 1000 / fps));
& w" c( s7 l" O5 N: m - ctx.setDebugInfo("error", 0)
, ~4 m$ T; q ~" A! E - } catch (e) {6 W* l8 {- m: z! C1 a0 K
- ctx.setDebugInfo("error", e);/ p$ M6 L# a& A
- }' t, Q# u! m) x1 K$ `: W
- }# X2 M8 G4 X3 D' V
- print("Thread end:" + id);
9 _6 B: D2 B- p0 _* N - }
1 c5 V/ y+ R; k7 Q% E3 j - let th = new Thread(run, "qiehuan");
- F4 {' y8 o( X4 l( @# r0 y$ k - th.start();+ A8 m2 p( d% P; {) F* d
- }
4 F: L) ?+ F( c4 s
3 ]5 C3 h! S5 H* V* i- function render(ctx, state, entity) {
2 v1 J4 A. \. s - state.f.tick();
3 g2 }# D/ @( t( D. g - }
: r* g6 S$ w/ `3 D" ~- U) [
4 Z" S% {: O7 ^# G3 O! [ s3 C+ t- function dispose(ctx, state, entity) {
l M, Q% x- m% B Z3 t( q- c - print("Dispose");2 i& q! @8 @& U! t
- state.running = false;+ e$ \- p1 C! Z' N+ `( d+ c
- state.f.close();
, g3 i" ? @6 w) C( p/ I - }) d" k- r) s* U
$ V7 ]1 N' Z, ^9 R8 T- function setComp(g, value) {
( i9 o" M% G: I - g.setComposite(AlphaComposite.SrcOver.derive(value));1 b, f6 k$ N: w/ c% \
- }
复制代码
" c: [2 E: S' I/ G" S: a/ 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。% J# w5 C& e" ~1 T
, Y; r$ H5 i* `
* T! @9 I5 ^2 {6 L& L0 ^, L# p8 E顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
) F# h& m) a4 m" n5 H: } |
|