|
|
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
×
7 r4 d' t: `9 v! \( y; D7 W这些天想了想怎么给LCD做丝滑的动画,稍微想了想,便有了下面这些代码。" G) q1 X7 u4 d" q" b
- importPackage (java.lang);- O& D: s5 s2 M
- importPackage (java.awt);
: H9 V+ b. l6 I) Q - & ^! [( T3 p- z: r1 U! {0 ^% W
- include(Resources.id("mtrsteamloco:library/code/face.js"));
9 r. i# q8 E" g, e7 l/ \ - ( @( a0 @0 i# L1 x
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);! \7 T4 q) N- j0 B
- $ p6 ~% ^2 K' k
- function getW(str, font) {% a$ [* \8 r& i$ l. H9 ?# `
- let frc = Resources.getFontRenderContext();6 {# _8 b/ Z h" }; d
- bounds = font.getStringBounds(str, frc);
3 B* n+ g- f; ] d1 p - return Math.ceil(bounds.getWidth());
, e% ~1 B5 y! { - }4 Z) o% f% d! g% s
5 V1 C7 e7 v! b# m. S0 p! P- da = (g) => {//底图绘制
0 [! u, `2 V1 Y8 _* V4 U+ t - g.setColor(Color.BLACK);/ o/ A% T/ |+ T1 R. K
- g.fillRect(0, 0, 400, 400);
: k5 x7 o$ N! U$ J8 t7 ] - }
2 N- j- E3 n& X, s: L: ? - w* U' g: C3 N8 T; j/ k8 q8 K
- db = (g) => {//上层绘制. _$ ^/ t _6 a' Z+ ?; R
- g.setColor(Color.WHITE);9 J- s4 x% [( z4 T4 i
- g.fillRect(0, 0, 400, 400);
: M% b- T+ w% P+ Z0 Z - g.setColor(Color.RED);
8 ? X8 D. g# d3 G# x+ P - g.setFont(font0);
6 n7 ^' G D% R0 ^) j5 g/ f* i5 y - let str = "晴纱是男娘";
; \' c, R- ~, h) F# q& Q) B6 @' r - let ww = 400;" K0 z. B) u, g% A0 y p
- let w = getW(str, font0);
8 R& V; B/ I( g6 R8 P0 a - g.drawString(str, ww / 2 - w / 2, 200);
3 `) h/ E. L# T% e# T - }
$ r) a8 k1 w- Y9 f7 A3 k2 ?
" U( t( s* X* k! ^& @- const mat = new Matrices();
. g% N m' L4 i - mat.translate(0, 0.5, 0);% c8 P9 X! T3 I# [
3 j( K9 i- ^" l. X3 e. y- function create(ctx, state, entity) {
2 D, N( c7 S" i7 n: K- A - let info = {
$ S( J' j- T- ]. y9 i9 F! ], K, ? - ctx: ctx,# H/ Y% \0 D# N: j' y% D
- isTrain: false,
6 G4 y, n# P Z* i - matrices: [mat],/ ~+ r/ X' V2 d! y$ [7 r0 }; T
- texture: [400, 400],% g! R& Z1 p l, ?: L
- model: {
1 y3 t$ H" E6 S9 P2 }: z - renderType: "light", P! c; @0 P5 M+ f6 X' W" r1 S8 K
- size: [1, 1],
: x3 V$ n/ D+ O - uvSize: [1, 1]
- y$ i7 \) ?6 M5 p - }; {1 g! @$ p2 f# e
- }
4 P4 ]" S0 Y. ]4 F5 k6 L4 P - let f = new Face(info);
( P" W* w0 p4 D) c: r - state.f = f;: R# H' c+ k' p+ J
- ) J* ^+ t, B ]9 {+ u( t
- let t = f.texture;
8 X3 h5 A! r$ Q0 [( \5 d* c: Z8 w - let g = t.graphics;
0 N( y$ @2 o( g4 I; q" k# | - state.running = true;. G J" n; U( f5 _2 I: Y" K
- let fps = 24;
' Z- B: a f- `2 V) ~ - da(g);//绘制底图
) j9 V- R0 L7 U- n* f5 l! T6 C - t.upload();, K+ t- P" Q& Q, r4 L$ ]- X) g3 J
- let k = 0;
% g8 p# o6 k/ m+ P - let ti = Date.now();
! `1 p* q0 y( g: [+ V4 ^" v1 Z - let rt = 0;
, Y- o" o, L! o; Z+ E# u - smooth = (k, v) => {// 平滑变化 P1 Y8 r& |5 T" ^( I
- if (v > k) return k;. A" i$ Q2 T3 b0 G l
- if (k < 0) return 0;
- O0 P6 b+ Q! O3 {, c [' Y5 y# [/ q3 o - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;; h$ s( ?% M9 o3 g( {
- }
8 ^* m0 j- S8 a - run = () => {// 新线程: A0 ]/ L! U0 i& D) Q1 Q5 n8 F7 Y
- let id = Thread.currentThread().getId();
4 z8 T1 j7 f8 k' O3 b - print("Thread start:" + id);; {6 H3 { e. R3 U! D
- while (state.running) {' l2 c* i) x! ^ \0 @
- try {
- ^$ M. Z$ Y; K - k += (Date.now() - ti) / 1000 * 0.2;
; l& X1 \* c( b - ti = Date.now();- ]* c8 e9 O3 K v% n: t
- if (k > 1.5) {
8 ^7 | D7 L8 A6 y5 } - k = 0;
9 J$ X: k. V3 b9 S' i3 Y. K" \ - }, w- E1 Z: Y' [& s
- setComp(g, 1);
! g) v0 ?8 o3 `( o; r - da(g);
8 @4 |1 y0 w/ B3 h - let kk = smooth(1, k);//平滑切换透明度4 F) j3 f6 L, i8 i- R6 E
- setComp(g, kk);3 D% h3 Q! m8 D' t8 H! g
- db(g);- _ R( c; Z/ c1 t3 C: v
- t.upload();
+ H. l" T- `2 O3 g' _! j/ { - ctx.setDebugInfo("rt" ,Date.now() - ti);
: r) O1 D2 Z% n2 L - ctx.setDebugInfo("k", k);( w: R0 k2 A3 b1 R
- ctx.setDebugInfo("sm", kk);
) w0 L5 C' @' o- x# {2 W2 { - rt = Date.now() - ti;
( K5 j+ s% _% k d! y$ u - Thread.sleep(ck(rt - 1000 / fps));. T% N+ n) r$ K+ N6 r/ Y. y0 Z; N
- ctx.setDebugInfo("error", 0)
7 h( N, n8 O' A, I6 X2 j - } catch (e) {
# k/ K6 ^4 Q4 M5 Z - ctx.setDebugInfo("error", e);
- a0 V/ P& l0 h5 e8 ~$ h1 G1 o - }
, p0 G& ~5 R2 U - }
2 [, ?2 y3 B+ S z5 L - print("Thread end:" + id);
+ S; c% w3 M' w* U$ [: a - }4 O3 Z$ [! P6 u0 t2 F" }
- let th = new Thread(run, "qiehuan");3 `6 A- B5 T. M0 W6 J5 U/ V" p
- th.start();
4 J" c; F2 E& i( d0 w1 ] - }
3 N. t7 i$ Y% \% r
) s' i4 c6 ^" I5 ]: o' f- function render(ctx, state, entity) {
, Z! H" u2 v* Q6 L' T9 w - state.f.tick();
) B- @/ n$ f7 J. H4 d _ - }% }' `, }/ G& w i- Q
1 B8 S3 `" l8 f) b$ \- function dispose(ctx, state, entity) {
9 V: ^" Y2 M1 ^# t3 o: J& O2 t - print("Dispose");
5 b$ k/ j p: V; n6 p/ }& Q - state.running = false;0 f9 k. Y+ F ], `
- state.f.close();0 s* X6 J5 V; O# U7 j' R+ f/ `
- }* y' L3 o* b- ~
- / E( l" C: h- L6 i1 v/ k
- function setComp(g, value) {
' p& c: d5 X, e3 U - g.setComposite(AlphaComposite.SrcOver.derive(value));
4 T9 u# e" N$ L- `- Z* B9 F+ I" B - }
复制代码
( m! W9 G, ?* J7 x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。
1 p* x0 @# P$ p, N3 b1 f) \: \1 A% w
: Z1 |4 z$ p$ n& _& U$ \
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)9 e! k6 f/ E4 b6 H3 I0 F/ [1 l
|
|