|
|
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. D. x; E* e; P+ d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。% i: B) o* ^4 }, s. K- P
- importPackage (java.lang);
( R: R2 U. d" J* ]! s; l7 o3 ^ - importPackage (java.awt);
# h4 E# q! }4 K; t: i
: N) u k8 A0 E3 {9 ]6 M# q- include(Resources.id("mtrsteamloco:library/code/face.js"));
# s2 g' S3 E: b: \: C2 G. F4 T% a - & M6 \/ `2 b! i5 P
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
2 F! d7 L* s, Z* O! D
8 ?; d2 |5 \6 i/ F5 q# f" ]- function getW(str, font) {- F2 M5 h' {3 _
- let frc = Resources.getFontRenderContext();5 |* \" ?( c" W; J s6 ~3 ^
- bounds = font.getStringBounds(str, frc);
! A4 [" m1 z5 Y1 i - return Math.ceil(bounds.getWidth());
# X- p! I# a8 `$ S9 n3 O0 ? - }
0 V6 ]8 f n* c. h+ o
9 b. b. ^( Z( J1 l- da = (g) => {//底图绘制7 G. \* P: Z, G. s
- g.setColor(Color.BLACK);
+ ~; q. u5 _# e+ x - g.fillRect(0, 0, 400, 400);
7 e. r7 H0 z) N0 Y$ E - }- B6 y8 V# {; F3 ]+ R% D& {
- # C* T V# m* x* W1 k# k
- db = (g) => {//上层绘制" b4 `9 p% N, z% N7 Y
- g.setColor(Color.WHITE);+ K0 [, e) R9 @* J% R" z
- g.fillRect(0, 0, 400, 400);" i2 p# C. E! [, _3 n% N' |( e
- g.setColor(Color.RED);
$ R4 G" Q0 n' b1 F5 c - g.setFont(font0);) z e5 I# U" s m8 S u/ g. T
- let str = "晴纱是男娘";% e2 j9 y- R& q% q6 a$ z, J6 ?
- let ww = 400;
. @# B* i8 V; k, U - let w = getW(str, font0);5 {$ Y) {$ O, i0 s& U
- g.drawString(str, ww / 2 - w / 2, 200);
' ]6 u% Q c0 U% F - }0 @7 }; K7 z5 p! ^! y6 S0 W% C: H
- 3 g X8 a7 h4 z1 m
- const mat = new Matrices();
, [9 c2 U/ `% u0 H/ f - mat.translate(0, 0.5, 0);. m$ A( V V6 Z$ V4 ~+ O' r; q
& E7 M9 c1 R, ~" I4 Z5 E1 l- function create(ctx, state, entity) {8 ]- b6 v4 F* a/ {
- let info = {
8 v7 A, N8 G2 \( W* | - ctx: ctx,
7 ?/ r) Z6 p5 |8 K% N W4 F4 ~# A6 u - isTrain: false,
+ z( W1 c: u4 m0 K7 @3 w - matrices: [mat],. C0 Q6 U' |# S& n! R
- texture: [400, 400],
/ q8 J h1 e& l8 w0 R) q. x - model: {: D( @6 `- n' j" c
- renderType: "light",
$ C) Z5 \4 z: |+ {. B9 E: G4 ]" e - size: [1, 1],7 A9 F9 U& l9 o9 D' V/ B" y# `
- uvSize: [1, 1]
1 I5 |" @% w. ?; \9 z7 i" R - }" [$ k$ A* ]/ u
- }+ ~5 L- R# Q) p4 e! B6 x6 S$ e, Y! m# [
- let f = new Face(info);
3 q9 h' g$ V) W# ~/ V - state.f = f;
: q* D1 X3 D# M7 G* K
4 G2 ~- z! ^$ i" _2 J- let t = f.texture;% X3 a( H2 U9 e" f2 I/ g
- let g = t.graphics;
( a( g+ O2 e; r4 P, c, x( O - state.running = true;
* @* j6 R" ]6 p% d - let fps = 24;2 b: L2 A7 f1 ]4 @ D
- da(g);//绘制底图2 v& b% y* a* ?" Q: s( }2 L
- t.upload();
( X$ X( B' f4 J0 Z - let k = 0;7 } | y3 F7 x- O# n# D
- let ti = Date.now();7 ^, z1 @& h; |3 }/ M$ G9 M5 J
- let rt = 0;8 N: F) X% W: N9 X
- smooth = (k, v) => {// 平滑变化
. U0 A( ~7 m6 _0 S: w" s) p - if (v > k) return k;; l; ]; Y' {, _9 t
- if (k < 0) return 0;" S) P( C, O2 \5 d; [" {
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;, u! w' U* w) R4 s+ o, Z4 j9 }3 k
- }
# I5 ^1 K0 G: y- G7 r# e; v5 D$ m - run = () => {// 新线程
2 Z5 t) u9 i3 i! q - let id = Thread.currentThread().getId();
0 L- x r2 F w& t( n5 M4 Y - print("Thread start:" + id);
5 R% t, T( S9 O0 T& i - while (state.running) {) f! z4 Z+ }" R) c4 z0 L- ^0 K6 ~! U
- try {# K, F# P L8 K7 R7 L4 A& ~! Q8 i' L
- k += (Date.now() - ti) / 1000 * 0.2;
9 n) N6 [: N8 }4 W2 B: `3 q - ti = Date.now();- w, ?5 G: P ^% x
- if (k > 1.5) {
( N6 N: d: U p% a5 p' w - k = 0;
- Q% S/ z* u c- F - }- j; q) G7 c' Z P2 n, \
- setComp(g, 1);# q: T3 j! @4 p2 D( O' H) L7 f; S
- da(g);- b* h0 C/ O& m- q8 R [2 z- y/ J. d
- let kk = smooth(1, k);//平滑切换透明度
# ^2 A6 Y! i# |0 q4 b - setComp(g, kk);8 U. y6 O, s, {: v7 ]( x
- db(g);7 R! ?5 R; |+ `2 g0 W
- t.upload();
4 Y" f4 {) J& x$ y( B: \9 t7 M - ctx.setDebugInfo("rt" ,Date.now() - ti);
% c; l0 s. H' p4 J+ w) L7 f5 Z6 b - ctx.setDebugInfo("k", k);
8 i$ `* k. @* l - ctx.setDebugInfo("sm", kk);
; A2 O) m/ i8 R' x! s5 T( | - rt = Date.now() - ti;
& {& O) g4 n0 ]( X - Thread.sleep(ck(rt - 1000 / fps));
1 x# [! S0 s4 W - ctx.setDebugInfo("error", 0)
6 T7 H M$ i& m1 w - } catch (e) {
, Q8 b# w1 Y* ?0 O0 f - ctx.setDebugInfo("error", e);
; A! o" D) W$ c2 s6 S - }
- Y a* _# ^0 q5 @$ Z2 w - }1 w5 v2 P% {: x# ~0 ^
- print("Thread end:" + id);- B$ r" \, j) C4 e
- }
- O5 N' i/ D8 N6 f - let th = new Thread(run, "qiehuan");! v1 B2 W6 h% U& J
- th.start();
. s* q2 S' q$ p& A$ j. ]" p4 I - }4 o6 d' \/ W; h, ? d. ^) F: H1 I
- " F! Q7 g3 {. j0 x6 {/ {8 t& w
- function render(ctx, state, entity) {. X2 S5 V* ~9 i! Q1 B( _: J
- state.f.tick();. r* ~; `: ?; R
- }3 K/ U; ]$ ]+ q
& F4 a) H3 y7 L- function dispose(ctx, state, entity) {8 e8 X' t4 }) K; h$ y5 ~
- print("Dispose");! p! D0 z( T- x D# g* [
- state.running = false;7 h. J! `7 n) z1 ?
- state.f.close();
4 U# e& ~! ?5 y7 {! f - }
) V* Z" ~/ n" W" f
+ Y; F4 ^; v. d: d- function setComp(g, value) {4 r x% _: a3 w+ R; Y2 y' W: d
- g.setComposite(AlphaComposite.SrcOver.derive(value));
I7 z6 ` L/ Q8 V* W - }
复制代码
) b6 A5 e+ [9 D$ {) w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。
" t$ W2 Y0 ?8 }1 a* F* a, I2 ]/ ?, {5 ?" ]; `) e7 B5 J9 b
" ~! q ^! k! j) 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)8 B4 {. q5 a& @- M$ \
|
|