|
|
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" O. E* R+ g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。( b: u" W$ Z8 D. R' P
- importPackage (java.lang);
, Q# u; I# U3 M, Z; V: F - importPackage (java.awt);7 |( ]" Y$ u* Q1 z, j
- 5 i! j+ Y) q0 o5 F
- include(Resources.id("mtrsteamloco:library/code/face.js"));4 l9 K ^6 V& ?' T5 U+ o
- 4 Z; X, W" f1 M3 Y
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
+ e# p! h/ p" l `, G
, u c$ v' ~% V3 C! x( v" s, o- function getW(str, font) {$ H( c: y4 I' K3 U) q9 x9 \
- let frc = Resources.getFontRenderContext();
^4 w4 I# W3 f3 N/ I - bounds = font.getStringBounds(str, frc);4 ~3 v. d7 Z- W
- return Math.ceil(bounds.getWidth());# @3 g# |) @$ S
- }, `6 X% B1 c+ N! [% r
( v) e6 g2 c$ p5 |- da = (g) => {//底图绘制2 v- R/ J# C8 h
- g.setColor(Color.BLACK);+ C6 ?/ N: T8 B, N$ A! Q1 M# o$ P
- g.fillRect(0, 0, 400, 400);
* d& ]& M& A2 ^2 }% \ A - }
2 b2 i2 b3 t4 G' m9 h9 O. Y
6 ^1 c* v+ J$ I- db = (g) => {//上层绘制
; A9 n0 c* ^$ d' p* }5 `0 k$ N3 D - g.setColor(Color.WHITE);
( _' \( j, |& A% I& L+ g' f6 y - g.fillRect(0, 0, 400, 400);
, \. q& f/ ^5 b8 o% u - g.setColor(Color.RED);) X# ^& `& m1 q+ A# J E4 T
- g.setFont(font0);
% ]' ^0 t( ]$ C& A3 Y' Y- l# R - let str = "晴纱是男娘";
# T+ v# u. {' q0 Q! Y - let ww = 400;" v; p% l4 Z% D8 f5 |
- let w = getW(str, font0);
& X0 j) ]2 F% v3 C - g.drawString(str, ww / 2 - w / 2, 200);
" z2 Z( E. v6 m - }
. N; D+ H" {! w0 z - ) T) V4 ~! W2 \/ g2 I( ~' T
- const mat = new Matrices();# t9 y4 {6 ^: q# N
- mat.translate(0, 0.5, 0);
0 W; J7 n) W7 ^
! S% u+ w% }. p$ N. u' }& c- function create(ctx, state, entity) {
( s- \8 {; W9 d% }) E U$ D - let info = {
7 a" d$ G' F! C6 T) B$ P& s& C - ctx: ctx,
3 f" w! V: G6 Y1 b% R: W - isTrain: false,2 ~' B" h" Y* P( L
- matrices: [mat],
+ G0 V( f8 o m1 _0 F; ], l, U - texture: [400, 400],
- }2 L3 {& R( x, k- _ - model: {; [: r0 B) N) J8 ^
- renderType: "light",( \5 W5 p; M d" I1 y8 G Y# x% Q- T
- size: [1, 1],
. T" e3 d) ~; o" }5 H8 l - uvSize: [1, 1]
4 V9 a$ l: g1 c/ h7 K - }
/ X/ D/ Z( ~6 m - }
6 ]6 g4 [0 _8 Y* o5 C# d ^ - let f = new Face(info);
1 t3 j; [% v$ a4 d( I - state.f = f;
* R$ d! Y/ J3 L! m1 j
4 k5 V: B# Q' d; D& E% ~( K- let t = f.texture;. W& O: M, U7 g) m( ]0 ?, {6 T0 X
- let g = t.graphics;1 T; K) L3 q; p
- state.running = true;
; Z Z% D; {* i* M7 E% n - let fps = 24;3 |* o0 Q- ]" V5 m
- da(g);//绘制底图' b5 B4 O( D7 U$ g1 l9 V( x
- t.upload();
4 z# N1 s& @/ ^: s* G: R - let k = 0;0 L, [+ W* D; h4 L: |
- let ti = Date.now();
) W, g: V" D7 h. [0 ]/ N8 ~ - let rt = 0;
/ r" q# ~0 \2 ] - smooth = (k, v) => {// 平滑变化
( G `7 d$ J: h9 H - if (v > k) return k;' e* q; x H" i/ ]" f
- if (k < 0) return 0;: y0 D, _- i" M4 T
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;2 ]$ v( a O+ a3 f9 T
- }
1 N) M" ?# A# k+ f/ Y - run = () => {// 新线程
# f" U. r1 {# A% J2 p/ l4 K - let id = Thread.currentThread().getId();3 K: m* w" ^6 w# P7 K/ ^$ b/ F
- print("Thread start:" + id);0 M& e$ T8 ^+ ^+ e: i4 [
- while (state.running) {+ S4 s' `. C9 f! h- @/ P$ z3 _
- try {# r9 h" s* @2 q4 G: d1 A
- k += (Date.now() - ti) / 1000 * 0.2;# W: W6 ?1 j& R O6 i
- ti = Date.now();
! G3 f- [7 H- @1 V - if (k > 1.5) {4 i; J. X* Y$ x6 A
- k = 0;( F- r% H% C* Y2 z) I9 X
- }& w- {; p7 z' a4 H! N
- setComp(g, 1);
! U1 t0 ]" f# l) `8 P - da(g);
1 x1 y0 ?: y1 W% J2 Y- P - let kk = smooth(1, k);//平滑切换透明度% H: x& j; ~3 g3 [7 g# s
- setComp(g, kk);
. f& D3 P5 {" c% x0 Q - db(g);) x1 O R0 R4 c: c! c9 V
- t.upload();1 v. Z8 v1 J# z0 ]! q- l" ~. h
- ctx.setDebugInfo("rt" ,Date.now() - ti);
" s4 J; ]9 r7 z7 L0 }4 `5 \' k - ctx.setDebugInfo("k", k);- E$ ~0 B, w$ V: j2 M; a/ K2 k& g
- ctx.setDebugInfo("sm", kk);
- k/ o. Z# E. W5 }1 u$ G - rt = Date.now() - ti;
0 E7 x" h# X3 S+ N" G/ g. d( @ - Thread.sleep(ck(rt - 1000 / fps));
/ k T( O& M& S1 p - ctx.setDebugInfo("error", 0)* l# r- x. O. K2 J
- } catch (e) {6 O/ `2 h3 H: ?, S
- ctx.setDebugInfo("error", e);
* D9 k6 p9 I0 V! g% J( w - }
7 M% z; Q! x4 ^+ [7 w# c3 e - }* R! V# c$ w6 L) \& _
- print("Thread end:" + id);, H: @( G9 l! a- g
- }
9 d/ q8 W, C! J1 } - let th = new Thread(run, "qiehuan");
3 O6 s9 ?8 v' O( } - th.start();
4 [( L2 @; {) i# @6 p- O: \7 F( H - }
" H- s; M: u* w7 F2 g* f+ z* l - 3 V' B2 x1 @( _/ e8 I* p
- function render(ctx, state, entity) {
* [! N; P1 ~! F4 ~4 [/ q4 Q% ]" \2 A - state.f.tick();
( I. i; ]: Q$ S! ~' G - }
: @8 g7 m5 W. f$ W$ R1 E, d
4 c- x" ~9 x& j- function dispose(ctx, state, entity) {+ ?' }5 N& }$ k! N0 E
- print("Dispose");: e: q8 y3 Z' C1 [
- state.running = false;
1 e* @3 w6 K m - state.f.close();
R9 N- f1 ~( ?; v - }; ?+ L' d6 H) y6 B( p
7 s+ [$ g. B1 l9 c# a$ B) y4 [4 N- function setComp(g, value) {
5 m. V/ J( k. o3 G+ v! { - g.setComposite(AlphaComposite.SrcOver.derive(value));
% b! t+ j8 j/ _! d/ F - }
复制代码
# Z! Q7 e: s. q- a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。. Q e' o. V" m, y
) x1 D) Y9 G; ~7 ]' i5 N
" b. d' [! ~" o( N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 J: J$ ?4 A& m% h! D; V- L3 X: P
|
|