|
|
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
×
) l8 F& U. J6 T; F: 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。
3 d+ A; Z9 t. S- importPackage (java.lang);
/ @/ b d# \2 }8 i! E; O - importPackage (java.awt);' ^- ~0 U& b j( c! \, t
& o$ I% I/ U4 M X' A- include(Resources.id("mtrsteamloco:library/code/face.js"));6 n8 W0 x. E) @2 m/ F
- v U+ _* A, N) v5 B- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
) d: u' x3 l, B9 T* z+ o* S - - C3 b( x- S4 S# ^( t- X
- function getW(str, font) {
* }/ b0 Q3 S; y9 V. g( c - let frc = Resources.getFontRenderContext();9 n% q8 a5 n5 g% S
- bounds = font.getStringBounds(str, frc);' |8 s, L& W7 \ p
- return Math.ceil(bounds.getWidth());
+ N' _7 ~ O7 @/ X# R# y, N - }
" ?+ T0 G: e( H9 Z6 O - 2 Z) h# ^2 `' H7 I4 k# V0 K, `
- da = (g) => {//底图绘制
- {; i% m9 D3 P2 c - g.setColor(Color.BLACK);
9 P/ P# \+ Z; S7 t/ c+ w - g.fillRect(0, 0, 400, 400);6 ?8 d- w5 P! F
- }$ i, k: Z1 r8 ?( [$ A
, @2 i# y: r# b- db = (g) => {//上层绘制
) Q" V; F, w; p, W& o- I: U3 L3 Z - g.setColor(Color.WHITE);; T4 k/ c6 L; c% V1 N, V
- g.fillRect(0, 0, 400, 400);
+ y( @: q, Y+ E' V& v8 k* F: Y - g.setColor(Color.RED);1 M" L4 g# Q$ P( z) [
- g.setFont(font0);4 I& T l' S& \ P6 ^
- let str = "晴纱是男娘";& w6 ]# b0 r0 {# k# ~9 V' X$ d2 [
- let ww = 400;
?' G" o# s- q+ D3 }& M - let w = getW(str, font0);8 V/ B8 a0 E- Z
- g.drawString(str, ww / 2 - w / 2, 200);! p' @$ h4 t% V% z5 N5 L
- }# \7 c$ U& h! h* b8 Y
# z, w/ G+ d! U+ L- const mat = new Matrices();0 C9 I- Y3 V6 y( p
- mat.translate(0, 0.5, 0);
4 l6 a4 L& a$ H, Y& o - * X1 W3 t' _! n! I" M
- function create(ctx, state, entity) {% I. N- w; L! P7 X" j% T6 i
- let info = {
f. r. I& v9 u2 Q! C - ctx: ctx,
; G/ W: V9 l, J; @' I$ G4 x - isTrain: false,
8 R7 J9 D$ d% s - matrices: [mat],: _0 U3 J: [7 I/ Z/ }4 [" f/ z* B; E
- texture: [400, 400],
5 V; E0 a6 F. H$ R2 Q! R - model: {
4 `9 O4 @, d" A7 F% I4 ? - renderType: "light",
. X( b9 @+ n0 F - size: [1, 1],
' {" d; {7 e0 T - uvSize: [1, 1]
4 m0 }& b/ V: @, @ - }
8 G7 n/ @* ~% _4 Z! I; m/ j$ R - }& b3 s9 H5 |/ t& f f
- let f = new Face(info);9 X2 h/ \/ |( t# \
- state.f = f;% T6 m9 k8 f; x! U5 [1 I& t% d
% o) p' }0 e: d+ m6 k- let t = f.texture;0 e k. f! _( Z. k( ^+ b3 J
- let g = t.graphics;
4 h2 ~6 `/ r2 I% z - state.running = true;7 T8 ^/ F: I$ g
- let fps = 24;
2 b2 g! S4 \2 ] - da(g);//绘制底图7 ]* {( k& I9 O) r% y7 c
- t.upload();
% }; _6 J) a0 V# w! p6 R - let k = 0;1 p0 ]7 W6 I) N$ m% ` t
- let ti = Date.now();
, D" d; Q; a% j0 M; P/ _8 q - let rt = 0;
+ _1 L; S- F4 g: D1 P - smooth = (k, v) => {// 平滑变化
( q: w" h6 j% Q( e. u9 ~5 A- H - if (v > k) return k;
1 ]1 Y) S! i3 A7 _( f5 \2 _+ h - if (k < 0) return 0;
" g7 e' J' E) b% X8 L5 v b - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
$ ?5 a, I: H7 L4 Y' P1 { - }
; D( U9 R; x3 l' h' ?5 c - run = () => {// 新线程5 B7 }" o8 b C( @0 E# \) \
- let id = Thread.currentThread().getId();: P- ?) L. U3 ?1 p: v
- print("Thread start:" + id);, k4 a& Q' y% h" H* Q/ Z3 ?- u
- while (state.running) {/ c4 ~' N4 W5 {. C# {0 |; e' e; I
- try {
: m H6 m0 @6 ~( m) e - k += (Date.now() - ti) / 1000 * 0.2;
6 B- G0 e- _5 u; ?2 B - ti = Date.now();' B' _2 W q. g" x
- if (k > 1.5) {: E" _, q E& b$ |, l
- k = 0;
3 w! H: A9 d1 P( J" l - }
# R, J2 G S: v0 a$ w1 x8 R3 o - setComp(g, 1);8 ?! e' b4 d+ n4 x' a3 V5 W% N" h' R
- da(g);9 h6 a, s7 f. N& ]
- let kk = smooth(1, k);//平滑切换透明度4 R; J* m% ? T% Z8 L
- setComp(g, kk);
" M0 L" C8 C7 i/ X: V - db(g);
" O+ ?( j; d4 U, h - t.upload();
* L0 K& Q, T" J" | - ctx.setDebugInfo("rt" ,Date.now() - ti);
/ a/ X; s" p+ J - ctx.setDebugInfo("k", k);, A3 z( S! ?/ H
- ctx.setDebugInfo("sm", kk);
! [3 q. z: t, h, Q, P: n. _# v - rt = Date.now() - ti;/ K+ W3 Q+ Y) i( @
- Thread.sleep(ck(rt - 1000 / fps));0 \) b& ?" `8 q
- ctx.setDebugInfo("error", 0)
, p- b0 ]3 j, W! f6 E2 S - } catch (e) {) x9 |6 c8 @8 h" d
- ctx.setDebugInfo("error", e);" n+ K; G$ J, p
- }
; O. [2 ]3 L5 S2 y$ H/ Y/ o - }
$ \5 |4 Z* U8 r - print("Thread end:" + id);
( ~( f% S# f# G/ ~" a3 `" p _7 P* j - }4 @0 `# }5 }5 A1 N( N
- let th = new Thread(run, "qiehuan");0 ^5 l# a m! |. a2 J) ]$ Z
- th.start();+ B3 Q4 w% v3 g
- }
, L4 I9 r2 J: X1 [5 b5 d5 _ - . \7 m0 ^2 Y' ?' t' l/ l0 c
- function render(ctx, state, entity) {0 G. H! C0 w5 H& [% c
- state.f.tick();+ |4 m M0 I4 ]( B4 W0 k
- }3 F3 W$ i2 m5 a: Z& J- U
- ! j' c" ^7 V. [+ d7 h
- function dispose(ctx, state, entity) {3 m! N7 B6 y* e+ N7 N3 g
- print("Dispose");
* g* k0 G3 \) q - state.running = false;
$ F7 p' e# ~) Q: m; e6 [9 a - state.f.close();
& @; C7 r* j+ j2 r5 y - }% D; { G; f8 K) A; R$ E$ v9 d
2 s' u, n6 r* V5 K& ]7 I- function setComp(g, value) {
2 V, ^/ W3 i* g. ^ - g.setComposite(AlphaComposite.SrcOver.derive(value));5 D3 }! d9 _7 i
- }
复制代码
4 w/ R7 d: q0 ^$ b; u7 @8 @% T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。; v" U f- e) p1 Z8 z+ X
% n) l/ |4 p1 f& G! F0 l! Y3 U% A1 _
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)( Y; {2 b9 K# r8 ^9 @
|
|