|
|
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 k6 H7 @! ]9 Z* U- h& s7 j0 W6 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。3 ^0 o2 R1 P- K
- importPackage (java.lang);
3 c' P- n* M. V- w$ z. d - importPackage (java.awt);4 [+ F+ {' C: `
- 9 x ~; a5 R# y0 c# `% E. U
- include(Resources.id("mtrsteamloco:library/code/face.js"));2 r* n; f. {$ C: h7 h( P
7 ?3 t; Y w: G- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);) ?; f# n: Y6 S
1 J$ \! _2 G3 I7 v7 N7 e, H* L- function getW(str, font) {$ b2 o. f( R3 ^1 g7 T
- let frc = Resources.getFontRenderContext();
1 Q- a+ {6 j# J( l. ~ - bounds = font.getStringBounds(str, frc);3 r3 H' r9 V- @. o
- return Math.ceil(bounds.getWidth());5 ^- l! }/ B" F% f5 x6 a
- }6 {. E8 o' A7 O) c3 j
6 Q( O/ X/ a. d7 y9 k- da = (g) => {//底图绘制
) t( ~. ]3 h* H2 m. m- R - g.setColor(Color.BLACK);
' _+ J1 {" r* a( S- L o - g.fillRect(0, 0, 400, 400);% x4 I! w" X& H; `- y" R
- }1 o# ^3 R" @, X |
- $ C, P3 d3 a/ d$ J
- db = (g) => {//上层绘制
- |1 _% O; _0 P" K6 K! o - g.setColor(Color.WHITE);" t8 a; e: l: S$ G$ P* ~, _
- g.fillRect(0, 0, 400, 400);
6 b* U7 e/ _% w7 }" l - g.setColor(Color.RED);# C! n2 R3 ~. L. j0 e* G- k% c: ~: o
- g.setFont(font0);
5 B8 l* w# t% n* p - let str = "晴纱是男娘"; f6 N6 V7 ]% x3 f8 P" J
- let ww = 400;& @1 L- x) @7 @4 [; w
- let w = getW(str, font0);
! t8 Z P/ B1 x9 K - g.drawString(str, ww / 2 - w / 2, 200);1 n1 M2 @$ |3 Q4 R1 w; c
- }( R/ _* {3 Y: q0 `2 X
- % I; I, h+ }! x9 q8 c# R6 X+ {
- const mat = new Matrices();0 d$ s4 F& N. `+ V
- mat.translate(0, 0.5, 0);
+ O6 K, Y9 S6 Y; _- s' q% D - 8 r& H8 E0 V+ |
- function create(ctx, state, entity) {4 s( Q! z3 w+ r+ I- n" [
- let info = {0 E; q' i& X; D! |+ Q" z+ R
- ctx: ctx,5 {8 B4 j, V2 g, B/ A
- isTrain: false, O# Y$ J9 p- \! q9 K
- matrices: [mat],
8 X% v+ \$ y4 k( {* r/ X( } - texture: [400, 400],
5 c: @) i! W6 I! T9 i0 q - model: {
@. s% p) f" _( I. l/ i: C( p2 J - renderType: "light",4 F+ m; |7 M/ ]
- size: [1, 1],
+ q' G( {. f0 E' I/ B - uvSize: [1, 1] O. C2 d% M4 C1 x4 B0 N' b& z
- }7 G0 S# W# W# F! U4 U" m
- }
7 m, o" v8 z" i. ], X - let f = new Face(info);. P% V$ _1 D- y! x' D; E* c
- state.f = f;
# M! @% _2 a4 E9 i) S- R/ } c - ' u0 `9 c1 v* w( t( X
- let t = f.texture;& r/ c+ ], y1 w* A6 M' [( {1 n
- let g = t.graphics;4 S4 m9 h4 C4 C) C, j
- state.running = true;' J7 L p: S7 T1 _! v
- let fps = 24;
& B: g2 N5 ~9 E- w. a' Y - da(g);//绘制底图
2 D: A1 O0 G% U. ~5 K - t.upload();) ?8 g# l, s$ |: s7 P2 x
- let k = 0;* K) Z8 H* l" S( Z: ~; J
- let ti = Date.now();
; D( ~: J6 I6 m" @/ x - let rt = 0;
! I, b8 F5 [, w - smooth = (k, v) => {// 平滑变化! c$ R }+ O8 R1 L
- if (v > k) return k;, A% m) ~9 W- j, G) w! a& g1 q
- if (k < 0) return 0;
! f" D$ U9 b; m: o2 ` - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
6 T2 r% K( N3 Y3 @; Y# O$ i9 } - }
3 F8 @6 |, W8 X3 o4 @ - run = () => {// 新线程. B. y# S. b7 R. |/ w8 ~. N
- let id = Thread.currentThread().getId();
3 g) h1 m, M0 s" g, I/ V$ t - print("Thread start:" + id);
. t$ e6 d' N k9 ~( A1 H/ B8 ^ - while (state.running) {
( X# t0 ^# B3 y* u7 M - try {( g( g4 v/ v& P0 ~7 W( m, E
- k += (Date.now() - ti) / 1000 * 0.2;( h( {8 y" H; Z, |
- ti = Date.now();
- k9 t) I# f5 m9 m% Q. n* {% L4 a - if (k > 1.5) {# T8 }: B5 @7 \: F3 M3 ^
- k = 0;; D+ O, t. Z7 p5 L
- }
7 x. R- a, V! H) m - setComp(g, 1);- {# h7 h" Z1 P; k. f! X* l H
- da(g);2 L y& k' q& d0 O, N8 a7 _9 t% |
- let kk = smooth(1, k);//平滑切换透明度# T/ X' o% n6 A: |; V) A6 [0 U
- setComp(g, kk);/ [/ ]- Z* T/ O6 R& m* b/ s) O
- db(g);8 k/ {, N: I2 l5 r$ @+ ?) S5 i" @
- t.upload();
5 S3 A- ]# @9 v( k5 L - ctx.setDebugInfo("rt" ,Date.now() - ti);
3 N# I2 m2 J+ _/ c& V6 |0 y1 F0 G' a9 J* n - ctx.setDebugInfo("k", k);, k1 Q {( D4 D
- ctx.setDebugInfo("sm", kk); } Z+ }' ~! C0 ~- o1 [. V; x F
- rt = Date.now() - ti;$ w" {: d4 H7 J' z0 W
- Thread.sleep(ck(rt - 1000 / fps));+ U9 b" X. L$ ^
- ctx.setDebugInfo("error", 0)9 P R5 A, v2 X; G6 Y
- } catch (e) {) a) K4 |- H' W: j! [8 U$ e& S( [
- ctx.setDebugInfo("error", e);
+ g0 T; g2 n# T; {- a$ W+ c; C2 ~ - }
' k) T" q" A- E( k1 x - }
/ p+ }: H: J% R( t. v0 [ - print("Thread end:" + id);/ L; T3 r( U! e8 M
- }2 @+ R1 m1 k) p+ t# w
- let th = new Thread(run, "qiehuan");0 N5 o% N5 _( x
- th.start();
, X$ i8 S6 F, C. G - }- k3 X& n5 q9 P- ^1 i" R
- 8 B' T4 A2 ^* }$ j/ m: {
- function render(ctx, state, entity) {7 i; x7 K& j' L
- state.f.tick();
; p0 I. F+ \! L& [; P& V$ } - }
" ]. q) p6 C9 j0 b. X - 3 x5 }( c/ {" F1 W% h) e
- function dispose(ctx, state, entity) {
; w4 y) a; }; ] S% K+ k K1 D. M - print("Dispose");
% I% i( S* [$ a9 \3 \1 L4 s5 I - state.running = false;
3 E+ X" O- W' z) Q) u; G - state.f.close();
; b! c. X" [' O0 f+ Z1 p - }' L) [, A# Q# j
- 5 B# t7 _" S( d9 c6 P
- function setComp(g, value) {5 u; G8 l N, f2 F/ Q; @; `2 F
- g.setComposite(AlphaComposite.SrcOver.derive(value));
Y; H1 ?6 M2 q5 Y# p0 O - }
复制代码
7 h: h: Q% j. k: ?! @6 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。/ Y6 G! d2 T: |) J4 k5 ^
+ A/ ~6 j5 z4 K+ a' {# P
' {# Q- W# n+ C. S4 L" s顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
' j, a3 G( h) `5 w5 x. I) w& w1 d7 X |
|