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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。2 Q, S& R! h! c! j; Y ~
- importPackage (java.lang);
/ L3 L6 d) o& R - importPackage (java.awt);5 Q7 L5 Y9 t9 u, j- [% N( i9 [% k
7 ]- x# O" c7 t9 C1 f- include(Resources.id("mtrsteamloco:library/code/face.js"));
6 V$ ]( [# o" @9 H6 [8 t3 K
3 d$ a" X9 |7 }# N- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
. ] F- ^ h8 a, ^5 p2 J7 r
# v5 M. V" O* h& ~" _3 ?- R, `- y3 R8 M- function getW(str, font) {
2 @+ Q& W" U9 k( v - let frc = Resources.getFontRenderContext();
4 n3 V5 e, {3 H0 ?9 o2 [8 |1 d - bounds = font.getStringBounds(str, frc);. b5 {. Z! W# S/ y1 E9 s. L: O
- return Math.ceil(bounds.getWidth());
7 |- q* @; {% @; M - }
C! w! }: C [0 y - ( ?# M L! I, f" j( Q( X/ {
- da = (g) => {//底图绘制/ L' e- s$ T& [0 k3 X# U. }$ S" N
- g.setColor(Color.BLACK);
& k$ \. G+ w c1 F- ^3 i - g.fillRect(0, 0, 400, 400);0 {" I- }4 G( J: d
- }5 T4 W$ g* k+ w" k
h& _) I; r1 o+ a- db = (g) => {//上层绘制
% e) A8 s+ l7 e! K: \ - g.setColor(Color.WHITE);# o% x1 l% S# J
- g.fillRect(0, 0, 400, 400);
. N$ c$ _/ I A3 U' d4 ~ - g.setColor(Color.RED);# m& j* c3 R: I7 G6 L7 ~
- g.setFont(font0);! Y$ Q Z5 C4 D5 T' G% s0 E7 T
- let str = "晴纱是男娘";% `0 p+ K+ T. f
- let ww = 400;
% k8 Z) \5 l/ y+ B- O* ^# `, V - let w = getW(str, font0);
U7 c U+ d' s( ? - g.drawString(str, ww / 2 - w / 2, 200);1 `# y" o# h# E6 ~1 R& I
- }( x6 D5 G( O( j) i9 |' A
- 1 N# x9 n5 k; f v3 p1 Q
- const mat = new Matrices(); S- }2 V6 }8 n
- mat.translate(0, 0.5, 0);6 v% B5 U4 d' p: g
- 9 G$ H0 k" Z5 _
- function create(ctx, state, entity) {# a& b- h5 c! q* |+ [
- let info = {/ X0 q) r/ a% }+ S6 N2 j
- ctx: ctx,% N% S! {0 Q" N9 ` z% l, s2 J3 L
- isTrain: false,- S; K5 w! {7 X9 g5 m0 k$ @: S0 S
- matrices: [mat],
, X9 w+ D3 J) s" z7 T - texture: [400, 400],8 P: v% K: ?0 \2 U
- model: {
+ n; p; m- E( N4 m6 V: E# t - renderType: "light",/ d% E1 V4 w7 M* Q4 t3 j, I5 M! c
- size: [1, 1],
/ q( |1 u% R h3 k8 R( t B5 D - uvSize: [1, 1]/ S4 y9 i! { J3 I: i- [3 W! v
- }9 C& G. ^; m9 ^( J0 r- Y$ |
- }$ h! k* L9 o5 Y, K# p3 D: a
- let f = new Face(info);, o, K3 }' ?' s
- state.f = f;; H# ?3 V9 t# {: ^7 Q" e2 Y
- 2 p; h' B: Q4 n7 E, }0 W" j
- let t = f.texture;& H9 N9 `0 A. j. ^ {. H! \
- let g = t.graphics;
! P b% l `- m, A% q0 v$ f$ I- h - state.running = true;; I. N% R, V! w
- let fps = 24;
# v) R( s" I/ T, A+ q* v; s - da(g);//绘制底图
- _( v' |% D. {$ u - t.upload();5 y5 ]# c% X2 N
- let k = 0;
1 K% w b9 [1 \+ N# h5 a - let ti = Date.now();
) V' n: C; M: g& z; m- C' D - let rt = 0;9 @! o. r" [* o1 ?. ^* [% y+ n# I
- smooth = (k, v) => {// 平滑变化& k! L! c. Z( R- x v- L
- if (v > k) return k;
. M1 P3 v9 {5 z. F& Y$ y* F& K7 r - if (k < 0) return 0;
: Z% b& N0 ^( m9 V% { n0 b) K) o - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;$ C2 c; v2 v& l
- }! X; J9 I: i8 r% @4 i9 `9 x
- run = () => {// 新线程
5 @4 ~0 K* T' z/ c - let id = Thread.currentThread().getId();
* {) P- z V! v$ q - print("Thread start:" + id);
I0 S7 j/ P5 \( `- a) J - while (state.running) {
8 f* W" r# k' l1 C - try {' m0 r+ o. G$ S
- k += (Date.now() - ti) / 1000 * 0.2;
- z+ M7 t% w1 V1 W - ti = Date.now();
, u! @7 `, d `5 ~ j0 ^' r - if (k > 1.5) {, T( g4 H; s) S
- k = 0;- ?1 p) V# [/ h* p6 i5 Q# ~
- }
, D+ T C$ K3 Z; F% j - setComp(g, 1);& |; B4 C* w' m/ r# j
- da(g);$ A$ A3 ?5 |8 v) p, l. y
- let kk = smooth(1, k);//平滑切换透明度
2 S- X; J1 n+ D( F - setComp(g, kk);
. f& N9 Y* Y4 b3 h% K, j- k( c8 a - db(g);5 N$ s; j8 F( C3 M
- t.upload();
1 u6 V- C+ P. }5 d - ctx.setDebugInfo("rt" ,Date.now() - ti);
2 j Q5 R# x1 C; O+ b - ctx.setDebugInfo("k", k);) O7 ~% Q! F8 }7 j; @6 K
- ctx.setDebugInfo("sm", kk);: {( l. \$ I' a
- rt = Date.now() - ti;
9 h7 w2 s+ @$ H0 l8 q% m. a4 K - Thread.sleep(ck(rt - 1000 / fps));9 L9 x/ x! `( r) F# A3 O; Z& g, ?& J; x
- ctx.setDebugInfo("error", 0)
. l7 T3 C$ J2 z# U - } catch (e) {$ `6 n0 c+ M+ O5 y6 U, j# b- M
- ctx.setDebugInfo("error", e);
* e4 ^0 M4 Z& T8 ]( t - }
1 ~( ]3 X; w3 a: m$ A) m - }
8 E) t. U) V) x+ ~# X- H+ j2 { - print("Thread end:" + id);4 r4 @: O6 D2 m$ {1 P# }3 Q
- }2 A1 J$ Q1 R7 {
- let th = new Thread(run, "qiehuan");, ]7 T5 ?/ I: y/ A
- th.start();
5 ]9 W9 N6 E0 c# }6 B* F - }
6 D0 [+ R# f' ~9 S' u
0 \" [6 h# D; P+ e2 `' O5 I! f- function render(ctx, state, entity) {
?9 k. I/ i. A; ]! c5 u( ?/ J5 { - state.f.tick();
* I5 {+ E( }9 \2 u- u: f" P - }' M/ S0 q. e: e; J( E6 a
# R+ v& K2 ? @# c8 z/ Q# Q4 m1 S4 o- function dispose(ctx, state, entity) {4 _4 I; Q4 |# ?% P* @8 K: V$ [6 ~
- print("Dispose");
) w" C- E$ Q2 O: o; {" a. j - state.running = false;% G5 M5 r1 J) H& D
- state.f.close();
% g( |3 a6 n) g* K e0 o/ [! u1 V - }% ]4 `7 N7 e# a% F' ]
+ f% G& d R P6 k, r( N+ {1 X4 g- function setComp(g, value) {" x5 W- ~! I/ E2 L5 ~" W- @+ S/ F
- g.setComposite(AlphaComposite.SrcOver.derive(value));
a' P) s. b; a: w% x' j - }
复制代码
5 J* O; F a' e& v u+ L. A) z* g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 j$ C0 u n5 u& W9 V8 ?! Q
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顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)/ T$ I" b' A7 `( V+ L; L8 O: w
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