|
|
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
×
: N# A, G2 ^' p9 B
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。
8 l$ i2 P4 s9 k& C* c3 n2 I; ]5 `- importPackage (java.lang);' h) y* [, i! G. a/ R) F
- importPackage (java.awt);
8 b; X6 y e4 R4 x) I
$ l0 |0 }% g9 s% K% I2 j2 G- include(Resources.id("mtrsteamloco:library/code/face.js"));
: P8 S: j5 k1 e4 _. {, I/ X
8 n; F# ]9 n2 M- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
! i6 D1 d6 F! d# w# X; M
, t8 M, v1 [$ c1 b& E1 D; y/ p# B. B- function getW(str, font) {
+ s5 \4 x% H4 l+ v4 r2 C q: i - let frc = Resources.getFontRenderContext();
* I' v# {( G- F% M) h v! c1 Y - bounds = font.getStringBounds(str, frc);6 G0 ^3 n+ y' c. k4 Q' f
- return Math.ceil(bounds.getWidth());
( \( M) `3 ], d8 `& n! a - }
5 H, Q* F/ g, G6 B
/ S& {$ v7 J. W4 {$ Z# d& n" }- da = (g) => {//底图绘制
0 t! K! s1 M$ Y) X - g.setColor(Color.BLACK);
- |- g0 X3 w; I: [: w1 m - g.fillRect(0, 0, 400, 400);
+ \& N+ V7 m# y2 k3 W - }1 B/ g2 _% z- `- k3 }! F: }, e
: Y# O" s: ]% G0 D" b! L" r T# P- db = (g) => {//上层绘制
$ M$ u& ^0 ?# B/ \+ u - g.setColor(Color.WHITE);
# B7 q/ S) L7 I# t. {; v' @ - g.fillRect(0, 0, 400, 400);# k2 S Z* }( I
- g.setColor(Color.RED);
4 n8 s2 h! K2 ~4 l1 {7 y - g.setFont(font0);$ o2 m& ~4 D% n- e# v
- let str = "晴纱是男娘";
( z. c% v7 b4 F* w - let ww = 400;
& E/ Q" F( J+ v! t1 F! X! L - let w = getW(str, font0);
0 [; g' G! i* ?/ U6 o - g.drawString(str, ww / 2 - w / 2, 200);
. G. I& I4 X1 q) V# R - }" a* i7 {4 ^. \! F1 O9 C
( G, C1 K y8 G2 d, j) ^- const mat = new Matrices();
3 L. C* k0 B7 _) X `& g - mat.translate(0, 0.5, 0);
* j* i: v/ j6 V
7 p; y' J5 Y5 E' @5 h5 c9 @" l# ]0 {- function create(ctx, state, entity) {, q/ O6 a6 i7 P) ~/ ?
- let info = {
! |8 o5 O$ ^4 A - ctx: ctx,
h0 p" s5 x. z0 w9 j4 v - isTrain: false,/ c: ^3 n# e8 L" x2 B
- matrices: [mat],
3 q" T. `* Q1 Y V% R3 s - texture: [400, 400], y' h2 B g, f9 n
- model: {
7 J1 c$ w% \/ D* D, _& P. d! ~8 @; e - renderType: "light", t$ x; X+ G7 }+ s
- size: [1, 1],
+ M& C$ ~) k# k! U! h; Y, i7 b - uvSize: [1, 1]! D# d0 N' v) b `
- }
8 ~, ]; m0 e. _: z7 s - }. v" G9 V3 {- ]$ S( y" y7 O* W
- let f = new Face(info);) l( [' |/ O+ D. i+ W; @
- state.f = f;% z. ] Y. K( d8 ]: X g
3 n, a# Y$ Y& c( _: b! j- let t = f.texture;
# G3 U+ Y x4 W - let g = t.graphics;
$ V8 T& H% h0 D - state.running = true;8 R2 K% g Q k" a: ?3 R$ N
- let fps = 24;: {6 ] I$ O$ [' \
- da(g);//绘制底图
+ C5 n6 R- {( n1 a& d$ S - t.upload();2 t/ X! {0 W# k) t
- let k = 0;
: |, x) ]/ i9 d. S - let ti = Date.now();
" D- n1 B2 X/ n; k - let rt = 0;
J8 n* p9 y1 B# r0 } - smooth = (k, v) => {// 平滑变化
8 C6 g1 o. l! G j& y - if (v > k) return k;, t/ ~5 x" ]1 X/ l f g( U% v! T. Q
- if (k < 0) return 0;
( e& e; N5 _# c9 s, g - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k; i, t; V p6 |7 B5 D
- }
- ]* \- B& C, S) u* n - run = () => {// 新线程
5 j9 J* s2 T$ t/ Y5 j - let id = Thread.currentThread().getId();
, e7 g* F7 [8 w+ F+ R! Z - print("Thread start:" + id);) S: _* [* ~3 y& ~6 Z- m; P
- while (state.running) {
- M# p" t9 i8 n, Y - try {: I0 v' \ k) y- v2 \2 H" L
- k += (Date.now() - ti) / 1000 * 0.2;7 R/ G3 u1 E8 z _, v p
- ti = Date.now();1 @; I" }; O) O: R9 ]% H
- if (k > 1.5) {
$ f# w$ g* J5 Z% I) e+ f - k = 0;8 |! ], v7 [. t# ]: h8 _
- }
; o) e2 }( I! l5 S - setComp(g, 1);% l: C3 I7 W3 D; Z8 V- D2 c
- da(g);
& t. @2 ~) p5 n8 {6 f2 R- `( e - let kk = smooth(1, k);//平滑切换透明度) T6 m H6 F8 @- `" P1 Q' D4 b1 Y
- setComp(g, kk);
# H$ L; p2 R7 y8 o5 L' R - db(g);: O) V8 |. K+ k, a g0 E
- t.upload();0 _ s2 Q' Q$ ~" ^" k
- ctx.setDebugInfo("rt" ,Date.now() - ti);
- Y, \8 e! [* U: E* W! P! F( @ - ctx.setDebugInfo("k", k);, _! D0 `( \$ [- s! X# \+ u5 k
- ctx.setDebugInfo("sm", kk);
; ?2 @& w# @5 h* M2 t - rt = Date.now() - ti;8 C& `% ]. X- K4 O+ ~; A9 g" f
- Thread.sleep(ck(rt - 1000 / fps));
( U+ R4 }/ @: l$ \% @ - ctx.setDebugInfo("error", 0)7 O9 h6 `1 C+ P* G2 Q' @
- } catch (e) {5 C7 Z2 m9 `; j3 K0 P
- ctx.setDebugInfo("error", e);8 [1 Z! p( G. n/ t# g! Q
- }
; n9 ?2 y1 a1 h- L0 S - }
& t& T% \2 i$ z, s - print("Thread end:" + id);
: p* r; G- w' h" r2 d R7 q: e - }
) H$ i5 N. `4 n! i - let th = new Thread(run, "qiehuan");; ^9 ?- R2 Y! ]
- th.start();
/ D1 D' d: \1 o/ T7 [ - }- H) f9 {. Y2 ?+ j3 D, e
- 6 O+ n, H# w0 Y$ ?2 ^: H9 E. R
- function render(ctx, state, entity) {8 \1 Y1 H9 ?' m3 }
- state.f.tick();' N7 j0 P* w- U4 {* X. V6 C0 h
- }4 @' [6 T/ n$ f! R
- / i: P; m) c! X4 @! r# R0 G( j d
- function dispose(ctx, state, entity) {$ w" ^9 ]( [5 Z8 d" P
- print("Dispose");
; r* A v# v. c1 x+ r - state.running = false;
) ]' X' ^! L9 g* S) V - state.f.close();/ Y# F" \4 {7 E' a9 ]
- }3 c4 I# W; b5 p
- \) p5 E8 ^% X% |/ p
- function setComp(g, value) {# M* ? S5 T. @- B
- g.setComposite(AlphaComposite.SrcOver.derive(value));) o& ~4 z, d x4 w* L
- }
复制代码
4 h D- C# L! a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。
. }" w. v9 n$ }/ i& O
" ?& ^/ a1 r+ {/ n/ y, o4 Z ?( x$ v6 U" l) x
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)" M. m1 `; |3 p# |) R" m7 s+ E
|
|