|
|
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
×
+ }# [0 _1 `" l; U A+ L5 H* {, U! i
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。/ F/ y6 D8 {4 Z
- importPackage (java.lang);
& i( [0 k9 B6 z! M/ _ N - importPackage (java.awt);
- G2 P9 T0 w& G
0 p+ U/ ~/ l: H* [) w- include(Resources.id("mtrsteamloco:library/code/face.js"));% }/ Y( l0 Z- O( F6 v
3 U) T3 Y7 l3 l& e( s- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
+ Q- f1 P/ W3 S9 b0 J" G& d
) v. ~; F4 w& y4 L9 q) \- A' ]- function getW(str, font) {: d+ D" m5 {0 r2 ?# a6 z" ~
- let frc = Resources.getFontRenderContext();
( a/ J0 c, w/ j) H, e! M - bounds = font.getStringBounds(str, frc);& T6 l* t9 F' d* V+ d: ^! y- {! ?
- return Math.ceil(bounds.getWidth());% G- e4 }8 a' h2 s" L" H+ L
- }
4 y4 l2 J; U' {
7 x7 i" D3 M0 z4 e& l% o) y! @' U( l& t- da = (g) => {//底图绘制6 ?0 T8 G/ l* Z R
- g.setColor(Color.BLACK);* P' u; s- @5 B2 `$ ^9 Y3 `/ ^
- g.fillRect(0, 0, 400, 400);
: k5 X+ o) h3 d5 d" \1 x - }
) H$ J# f9 D- v5 s7 M( g
. F# X# ^7 C2 @, T3 ]- db = (g) => {//上层绘制
1 Z8 I. b U9 q/ S; d - g.setColor(Color.WHITE);+ }& _1 s. z. V( ]8 D3 U0 ^
- g.fillRect(0, 0, 400, 400);1 k5 O! {7 O+ H
- g.setColor(Color.RED); B/ M2 w1 M6 d+ N* Q
- g.setFont(font0);
, @* k: @3 k0 j7 U5 p% F, { - let str = "晴纱是男娘";8 z! f3 i% Z3 k- m" K
- let ww = 400;- U* \, r5 c" p- ?4 ~( O0 R2 }; ^
- let w = getW(str, font0);: |/ i! P. }. ]7 E
- g.drawString(str, ww / 2 - w / 2, 200);
. t' P' X" B& M - }
& G" ~+ L' J1 j7 k: d
) A- R: @ a- V# _8 |- const mat = new Matrices();
- v& t4 @0 c* P" r# v5 c - mat.translate(0, 0.5, 0);- l7 ^3 o9 \. q' A6 W* {) z* G
2 @$ q2 k$ b; n8 Z0 S- function create(ctx, state, entity) {
1 L5 B& k$ v4 R5 i2 t, N - let info = {
6 B9 g8 p& n) b$ }, J - ctx: ctx,' d5 K a# T6 X& @ G# K: L
- isTrain: false,4 [/ m# L3 e' c7 _( h9 A
- matrices: [mat],
& e: l% c* ~# X9 Z6 r2 g; k" ] - texture: [400, 400],7 o8 V% U& k: @9 ], C, Y6 x3 C
- model: {' I3 C0 t& D* G$ h1 s# h
- renderType: "light",6 X& R$ F8 y2 v5 W& N ? b) W$ D1 D
- size: [1, 1],
. z4 }- x4 t; ^6 ` - uvSize: [1, 1]+ O# S) |: e' m3 j0 V
- }& \9 ]% r9 H" U" ]$ T
- }
. `* x; P* P6 E$ {& h - let f = new Face(info);1 D- H+ \+ x( Y% I! C
- state.f = f;6 k% h$ v. O" Z, g, i
O: l% q. n$ r4 m- let t = f.texture;
% ]# A* E7 ]7 ] - let g = t.graphics;0 ]9 l* _/ P, K
- state.running = true;' u' ~% ~) x5 o% ^
- let fps = 24;5 [& k# S; s5 x* H" Q$ P
- da(g);//绘制底图# t. p7 B* p8 w1 v5 q2 w, I
- t.upload();
" C9 y. @: E* v( d/ a* ~ - let k = 0;
) e& n5 ?% i m K - let ti = Date.now();0 g' g" q4 ?! D
- let rt = 0;, \/ Q2 B0 `- t9 f3 ?+ ~3 d! q2 @
- smooth = (k, v) => {// 平滑变化4 @. n6 b4 @' l: Q M
- if (v > k) return k;, e% H# g; x$ @" T1 v' Q5 m. d
- if (k < 0) return 0;
1 [6 Y* i% R) @. x7 X - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
8 l4 j# b7 n% k4 r- T - }
: D, ?& P8 @3 K6 W ?( A, b - run = () => {// 新线程
) @& G5 g$ o- h3 z2 w - let id = Thread.currentThread().getId();( c; S+ ?2 o# n' ~) R
- print("Thread start:" + id);; Q) I0 M/ q* I3 e, [
- while (state.running) {. l J$ y- S7 M6 \; O
- try {
6 U/ C) z& g) f1 [5 v - k += (Date.now() - ti) / 1000 * 0.2;0 N8 {8 M, f2 E0 G S& Y
- ti = Date.now();
* g; e b$ d2 N% a6 h$ [# s - if (k > 1.5) {
7 r3 C% C; W7 q, Y* \( i1 q; w - k = 0;
/ w! B( t. r2 V) D" j6 \+ ^ - }' ^$ Y; o4 O; r5 k) Y+ ~) W' l1 a
- setComp(g, 1);+ n+ i' h$ }1 x i
- da(g);* N' l X) K& q% P+ x! L
- let kk = smooth(1, k);//平滑切换透明度* v0 k: G) @2 H
- setComp(g, kk);
; Q( b4 P7 o; z0 X - db(g);
8 a+ L. C2 J3 b - t.upload();
; h3 z8 E D: F7 E1 {# x! N" ^ - ctx.setDebugInfo("rt" ,Date.now() - ti);
' U; z, F. x4 @ - ctx.setDebugInfo("k", k);
8 b3 K( F( {+ ?. A - ctx.setDebugInfo("sm", kk);5 C! ]$ C+ A' E4 @' v
- rt = Date.now() - ti;' g v/ ^# M- I: n( B8 @0 b8 q
- Thread.sleep(ck(rt - 1000 / fps));
1 F M/ @+ M4 E7 v0 k- y - ctx.setDebugInfo("error", 0)8 ^. E8 y. ` ^$ P) r1 Q$ g& O
- } catch (e) {6 v, E; e" A& G! C
- ctx.setDebugInfo("error", e);( G" h q7 B4 S6 S% o
- }
0 S6 j. K3 p$ i& j- S7 Y- { - }
8 X# z0 w8 T! `6 M3 T# [4 `: e - print("Thread end:" + id);; F; ?' W/ q( a; M' ]6 K1 e" p! _/ y
- }! h" s# c- G# Z1 o" z
- let th = new Thread(run, "qiehuan");! Q% B5 M' O' x' Y D+ g# {+ o
- th.start();
$ ]; C/ [6 `0 p9 U* d, |: _ - }
( K1 @9 o R5 d* n* T5 e - 7 t6 L; V( \* U3 t7 |
- function render(ctx, state, entity) {
0 p6 i6 k% }! h1 P - state.f.tick();
& Y9 Q5 N/ F; y. m5 c9 D - }
4 \! ?5 u1 k+ y6 q# L - 2 O) H* W5 c* h% L1 z7 ?
- function dispose(ctx, state, entity) {' W- O7 Z' f' h& p/ `$ }0 ?8 j
- print("Dispose"); b" _/ d3 E g4 |( n
- state.running = false;4 v1 p) K" g5 g# U
- state.f.close();4 _/ Q4 |" [/ O
- }
s: {+ u- x) f6 Y - : D+ M7 L! s& z8 g& M
- function setComp(g, value) {( z6 V& T7 E4 x$ g) o
- g.setComposite(AlphaComposite.SrcOver.derive(value));7 W# f( D4 Q% k+ Y2 ]" n! z
- }
复制代码 1 g9 r# s- a5 E
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。
$ w! W0 J1 W; ?, w9 ~" d, h. S2 ~4 V9 b7 x. l& i d' K# \2 }1 N
; c4 B3 u" t; ?
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
1 J7 x6 l7 D3 R( L3 d y& ^ |
|