|
|
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
×
9 F5 d8 z/ f4 p
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。9 J2 n0 K& g7 d
- importPackage (java.lang);5 S1 e( R3 Q$ O9 V8 Z+ Y2 i/ t5 Z _
- importPackage (java.awt);
p5 F: D6 o f. o7 n) F
+ @) K/ m! Q- O/ p- include(Resources.id("mtrsteamloco:library/code/face.js"));& \# C! G+ O. o s" ~# ~
- 2 ^' n3 C; z1 m+ L
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);7 U! {0 j m* u$ v0 [
) X* s5 {3 J6 Y9 \, g- function getW(str, font) {
# M3 J% O' o1 [. M1 r - let frc = Resources.getFontRenderContext();3 {. {4 {; N6 k# O/ O
- bounds = font.getStringBounds(str, frc);
r* B6 S/ p/ a - return Math.ceil(bounds.getWidth());3 z5 k4 T; ?4 R7 [. C. c+ p
- }3 ^8 D2 M, s% G+ o7 S1 Z
- ' M7 e5 m0 V+ {. \4 P! f! y
- da = (g) => {//底图绘制
3 n! o q! i8 w( w/ z' a2 T& Q: M - g.setColor(Color.BLACK);- H' N. C9 @. A& A% ~
- g.fillRect(0, 0, 400, 400);3 I& f' H I* ~
- }
3 y- h5 i; Q: `) V' D0 g; H5 P* H - . j0 g4 o# o5 r' o
- db = (g) => {//上层绘制# d* F; ~6 e" |3 q" x
- g.setColor(Color.WHITE);
1 |3 V7 @. e: a4 Z" |4 z - g.fillRect(0, 0, 400, 400);
2 T, I' `! u q. k4 U4 o2 p - g.setColor(Color.RED);
' h9 N* U: Z+ q1 P9 L# x( }' r - g.setFont(font0);
# p8 \) e: S6 d, ]7 h+ R - let str = "晴纱是男娘";
: \! S9 u6 H( O# l - let ww = 400;
% `% y4 `5 P- | - let w = getW(str, font0);
, v8 u* b: X& Z/ }- k - g.drawString(str, ww / 2 - w / 2, 200);4 Q- z8 T/ S/ b9 f& w- O
- }
2 d% Y! r, i$ m( k - % B( N" E! K+ \# B) n: K
- const mat = new Matrices();; Z }8 ^ @" r2 d6 Y
- mat.translate(0, 0.5, 0);
+ z) Z2 V5 ]" c# K7 |
( m# [+ S0 n+ {* i% |( Y) N- function create(ctx, state, entity) {
* ~% N' {/ ]3 r, }/ z2 C5 {8 c, p - let info = {
1 f! f, C" M$ Y- h- M, j - ctx: ctx,
" c7 a6 w J! g- G2 r1 y - isTrain: false,
2 x* R9 N* V# d, _- q; T - matrices: [mat],
: q. E1 q4 T4 x4 y: Y9 Q+ v - texture: [400, 400],; O- q* y9 @. W$ y" S' G
- model: {
6 Z. t& r" h- u; B' f# S - renderType: "light",
( U: T$ g, D. G' |' z& h2 r - size: [1, 1],' \) y, x2 ^( A' N S- j$ b
- uvSize: [1, 1]
' d' z+ C+ ?$ }* } - }
0 o8 n; `9 |! M* r - }$ x3 r2 R$ }: O Q- C8 u, ?- R
- let f = new Face(info);5 q S! j; e6 P) M6 r. _8 r# Q1 O
- state.f = f;
6 {+ C% }& B- ?& H& D2 t5 o, @' B
/ e$ p0 d2 V. h( F- let t = f.texture;$ s' g3 Q( \& [4 V! g
- let g = t.graphics;, E+ K3 X, V! O1 H* a
- state.running = true;
, W/ B8 k) A$ z: P+ E1 D8 } - let fps = 24;
+ K# V; U! y# [ - da(g);//绘制底图
9 ?* q" c3 H( g - t.upload();
5 {7 \4 A; E) ` - let k = 0;9 K8 K; L @, [) x/ N+ G9 h
- let ti = Date.now();
. }: [5 i' h2 O. u* u - let rt = 0;3 v' V; H( ]# E( V3 F
- smooth = (k, v) => {// 平滑变化
8 k! j- @8 t+ z - if (v > k) return k;& l) m' R& E. V( p; \
- if (k < 0) return 0;' t; ]% g; k0 a" k/ N/ e* U
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;# h% f0 U0 \3 U$ R: \
- }
. v# A2 g( z! {; C" r6 i% c - run = () => {// 新线程, ~7 o3 P! a n" b# ~. q
- let id = Thread.currentThread().getId();7 F. u: I& F. Z* W2 C& l8 c
- print("Thread start:" + id);) u d+ {! M% ?* @/ R
- while (state.running) {
2 Y4 ~2 n6 g+ S& r/ f5 M - try {/ M' w" }6 r# l: d
- k += (Date.now() - ti) / 1000 * 0.2;; m! y$ u+ f* g v8 `
- ti = Date.now();; Z5 X R$ P3 y+ A$ S) O
- if (k > 1.5) {5 T: ?5 v! Y7 Q" V
- k = 0;$ u8 X, C' D! g+ e0 V
- }
/ Q8 ]! Z; r# l$ N - setComp(g, 1);& R0 f" H4 ^7 C2 ^% J0 X
- da(g);
! ^3 R8 ^' @+ S# A# | - let kk = smooth(1, k);//平滑切换透明度& @6 \2 V0 m& O6 J" e, Y
- setComp(g, kk);2 H! B ` a n3 L) u+ x
- db(g);3 {3 M0 N$ c8 j+ S1 {# `
- t.upload();
# l* x, n# g# a - ctx.setDebugInfo("rt" ,Date.now() - ti);0 m4 Y9 Q- f4 |
- ctx.setDebugInfo("k", k);) @% d g4 K/ b G3 I
- ctx.setDebugInfo("sm", kk);
4 w. R0 a# Y, C; X6 C/ Y - rt = Date.now() - ti; u$ n2 h: C- Q7 g) [) ]" d2 |
- Thread.sleep(ck(rt - 1000 / fps));
- b1 E1 E3 |6 L+ v- W# w - ctx.setDebugInfo("error", 0)& p3 ]. ?# \8 ^1 Y, h
- } catch (e) {/ N. O2 J @- F7 r5 I8 p' T
- ctx.setDebugInfo("error", e);
6 b- K& v- V4 { [% L% X - }" X5 S3 E9 _2 p+ c/ x4 L
- }2 U F7 {" `* U, G2 j
- print("Thread end:" + id);
# m2 u1 I8 p8 x; I5 e- d - }$ D9 V4 u3 w% r) b3 H
- let th = new Thread(run, "qiehuan");
# _2 o0 B( g8 C: Q - th.start();
" u7 i+ R5 v% U7 X- S2 }3 D - }3 A+ V% K2 |; K& V5 \% [2 p
, S! R; \& T4 E4 T6 R% S) f6 F- function render(ctx, state, entity) {
% K7 _8 L: f# X - state.f.tick();
4 K/ U$ G4 C1 U, y - }
7 ?# D, K: [6 U+ G, t% B+ a - # B$ Q8 H* Z/ R2 [8 D8 z, u
- function dispose(ctx, state, entity) {
, S5 C+ w3 G4 J+ ]5 H; u - print("Dispose");" @6 G# N; f. p: J
- state.running = false;
, J: [ p* V* I0 B# @ - state.f.close();( T7 h. w4 [* L) ]% a
- }6 S7 }* H; ]& w n/ j1 h
- $ ]& }: d; A% o; B) t5 d; C$ \
- function setComp(g, value) {
/ ^4 I; Z1 a9 A( D0 W) E - g.setComposite(AlphaComposite.SrcOver.derive(value));0 i! ]7 k2 f" a' \6 S3 Z
- }
复制代码
5 S2 T" p0 d- V# `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。 @ a( t, D( a/ c. \
+ I+ b1 O8 X4 @; [6 Z+ g, s4 q a0 N4 _
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)+ K: B; n( f& p7 W+ r/ s
|
|