|
|
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
×
" f' B. X; p! K6 [) d! J( U
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 f& T( O5 y0 W5 ]- importPackage (java.lang);# U: L2 z/ q8 |7 @) b4 N) ~
- importPackage (java.awt);
7 w& a/ S* k9 x$ O% H
0 h" P. C9 V6 P! l- F4 N3 ~- include(Resources.id("mtrsteamloco:library/code/face.js"));
9 |9 ]1 l6 I6 n9 @3 X9 K) ^" _
' B* P+ U1 b' M5 }$ K* n- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);4 K) V0 [' ]! R8 f6 y
' j2 i7 p. [3 T- function getW(str, font) {0 N) u% o7 x6 w( l6 c3 |) R
- let frc = Resources.getFontRenderContext();. Q0 o) L) ~, C# w. D9 y4 Q
- bounds = font.getStringBounds(str, frc);2 g6 D$ R4 o' [1 }- M' ~) }
- return Math.ceil(bounds.getWidth());
# t$ b! X8 p5 I: N9 H - }
* V; g5 W2 J8 K D( }+ N& [* V. Q
9 O& A! w3 E9 u9 y+ ~3 M- da = (g) => {//底图绘制5 k/ o) O- O! g' v7 }3 `# q" M: X
- g.setColor(Color.BLACK);
1 g* D0 A, @$ c2 H - g.fillRect(0, 0, 400, 400);5 I/ Q! }6 j) M& T! P8 n7 B
- }$ q9 q0 G# L1 H4 {1 s4 ^
- ! {+ p. @3 U0 O$ e2 v2 [
- db = (g) => {//上层绘制# d7 d$ F @; l c
- g.setColor(Color.WHITE); X5 u& Y( ^2 l) p3 n
- g.fillRect(0, 0, 400, 400);
0 A8 k( x- o3 O3 d# W5 M - g.setColor(Color.RED);+ w b) g7 k! c% t4 b1 q0 Q) q- D; m
- g.setFont(font0);) H8 t( h# L( L1 M2 w% X
- let str = "晴纱是男娘";1 _ Y6 y- ]! Y
- let ww = 400;
% H |3 A9 R( d- K - let w = getW(str, font0);% N. n- F i/ o- ] A
- g.drawString(str, ww / 2 - w / 2, 200);
; X9 {/ D. `2 Y4 f# f - }
9 H: _1 r7 K! Y. G4 ^8 A7 }3 t
* ?2 u+ G8 T2 g( w- const mat = new Matrices();- {& [" k5 a G8 z; I) y$ H0 x; ]; h
- mat.translate(0, 0.5, 0);
# }6 P5 X: l1 s
* V' K G+ f& \# u5 k- function create(ctx, state, entity) {5 V, G3 q: F/ t2 A7 s
- let info = {
: }, x* D# [) R6 v. v& b, K - ctx: ctx,* [- k9 R% o6 O6 H1 r6 e
- isTrain: false,
! I" |: ?& Z8 R% F# Z+ ? - matrices: [mat],
5 |1 C) |0 S2 u: X- [ - texture: [400, 400],0 H9 t. ]8 _; j$ K& c2 j8 x
- model: {
" I) [& \# v; V' F6 x) X G - renderType: "light",
( t% _- d7 {5 P. B - size: [1, 1],
. E8 [- j+ c2 u - uvSize: [1, 1]3 R" w! w- z6 Q/ i% i
- }
. K1 J# k$ {' H( t' F! F- f - }
5 E4 r, p, H7 M" F E - let f = new Face(info);* h: |$ v' P: S6 o2 ~. v1 } H
- state.f = f;! E% Z3 y% W" A
- C; t# F# p& R% [* w, b: I$ [- let t = f.texture;
( b. G; D' z4 G" ?( E( J8 r - let g = t.graphics;/ R9 w' {1 ^5 H" I, ?+ L* J
- state.running = true;
3 t( d/ T5 G) M1 H! D( T - let fps = 24;
$ L/ V4 R7 e+ S) P! S - da(g);//绘制底图
5 j% `6 w& N* ~ - t.upload();
0 F g3 t% N) ~6 r% ~2 k# d0 n - let k = 0;7 I! S8 W+ o9 t6 Q" b: k
- let ti = Date.now();9 o2 {# |4 L' s! z" K
- let rt = 0;
9 p, R4 }2 u# \/ s! M - smooth = (k, v) => {// 平滑变化
/ b1 c% Z' r& x) [1 Q" ^$ K/ z - if (v > k) return k;1 E, o6 g$ [3 a: U. I0 R
- if (k < 0) return 0;3 z }: w! ~' r; H6 M. A
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;$ ?$ ~2 J5 c7 D7 b$ @) k* \9 K
- }6 d A/ g. A9 p9 Q
- run = () => {// 新线程
8 Q/ |& J2 }$ d9 H* ` - let id = Thread.currentThread().getId();
0 I: `8 x' I3 w& a6 V8 r+ D - print("Thread start:" + id);8 f4 L2 \7 B# A' v X+ P6 Z6 H
- while (state.running) {6 l8 j# c0 Z5 W6 s9 p3 i
- try {) ^3 H2 H8 I# B$ R0 W( Q7 w
- k += (Date.now() - ti) / 1000 * 0.2; ^2 i/ l2 N5 b6 F5 j
- ti = Date.now();& x6 r+ e+ c0 I5 W* M" g1 i( g/ s
- if (k > 1.5) {, \5 A/ Z6 U# x6 S* u- d$ Z+ I8 i* d2 X
- k = 0;' y' R- P2 {+ K. Q6 r
- }- U) d1 ?& x* l$ J$ d2 k
- setComp(g, 1);
, u$ s8 J$ C9 E3 @5 _ Q - da(g);
# ]9 n% q* i! i; T1 f - let kk = smooth(1, k);//平滑切换透明度
( A* X. G% U" q; T% F8 H - setComp(g, kk);5 z9 G: s9 c% O8 U( {: [8 a
- db(g);6 h8 H- H# W- B7 g8 v
- t.upload();2 g% H% S" T: b/ ]% f- k
- ctx.setDebugInfo("rt" ,Date.now() - ti);
/ r4 _8 T5 L& e7 V0 a s( Y0 U - ctx.setDebugInfo("k", k);- P: o8 u7 D z6 j# s: H
- ctx.setDebugInfo("sm", kk);
6 u7 T0 T) |3 W% l - rt = Date.now() - ti;& P$ E/ I+ K$ P) a/ ~
- Thread.sleep(ck(rt - 1000 / fps));
* _0 C# k2 t2 C [7 K( y - ctx.setDebugInfo("error", 0)+ K) B- B* H9 T: W! }
- } catch (e) {
. p& E& T* a$ ]0 e+ {( Z1 ^1 u - ctx.setDebugInfo("error", e);
) q u' B2 y( H& Z5 M4 a$ h1 a - }4 K" Q ]1 S5 Z& c9 B4 {
- }& N' N/ K* R! p& d5 S4 f
- print("Thread end:" + id);- N/ x- F, L$ L( ?1 u0 Q4 c; s
- }
& }1 P$ y' p: G - let th = new Thread(run, "qiehuan");
2 J( L0 e, M" z. Q - th.start();
7 c# h u2 g0 Z2 l+ _" L - }
0 c9 O. }/ o0 y: }3 m* y$ U - `; h3 ?7 F' ]- j/ @
- function render(ctx, state, entity) {) {- ]' {% {2 X" T' t
- state.f.tick();
" g. b# h& \0 ~6 m2 _ - }6 C5 u' k& k5 x( P, Z$ n) O/ [
- 7 H, S4 X) D. s; s
- function dispose(ctx, state, entity) {. a( b6 Z& L4 p+ A4 X1 c6 M
- print("Dispose");
5 S9 z9 X1 A% \9 _ P# ^ - state.running = false;0 G: \: V x, C- `2 U
- state.f.close();$ F E' t( [# S) h- l) d" s
- }+ l( h# J) {7 l- ~! P; Z* B
- ! l# T( k" ^. T0 T# T1 O
- function setComp(g, value) {
+ _4 P4 F& N$ a. \9 L( g3 v - g.setComposite(AlphaComposite.SrcOver.derive(value));8 y. }5 Q1 h; Z# k
- }
复制代码
0 Z" M. p- p' k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。
9 q; a& W- m8 t1 I y' T% w) W
6 I" x3 t; O9 O0 @+ L2 N, l5 D0 k, K, w" u4 R: W
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)5 C% U# P0 S* F/ d3 e0 R' x3 N. V
|
|