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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。1 t/ m" k8 q2 s8 M; f; B
- importPackage (java.lang);6 X9 o1 |2 G2 [$ j6 Y
- importPackage (java.awt);7 `3 X- A3 n) S f
- 5 Z% G4 @ ]! B+ U
- include(Resources.id("mtrsteamloco:library/code/face.js"));1 B2 f. G p1 V" `) P7 S. L
& P7 q" q1 C5 T. j+ E+ D7 V+ m- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
6 [3 e5 L6 R$ T8 j1 z2 E
2 R7 H1 i9 Y/ V) u- function getW(str, font) {2 W* W- D" p' L# J: P
- let frc = Resources.getFontRenderContext();
, p) X1 ~ p" m1 Y# N - bounds = font.getStringBounds(str, frc);7 A& K _% Q* c. @& \
- return Math.ceil(bounds.getWidth());3 p; P* _; _$ C6 K
- }( u( ` Q$ i9 B H8 V0 O8 W( e; p
- ' ]' u1 z2 F" @, T9 t
- da = (g) => {//底图绘制
) @* e; t8 R; a4 I - g.setColor(Color.BLACK);
% P% N; e8 d( H- [ - g.fillRect(0, 0, 400, 400);
P% \$ ?% B3 e* z/ E - }
% G6 ~& a& [7 A/ G- b
7 y* B: [8 l8 j- M; q& P* s- db = (g) => {//上层绘制
8 u1 p* `0 b5 c$ f( C7 R6 w* u- [8 z - g.setColor(Color.WHITE);
6 d: O, v/ Z7 S4 x2 q - g.fillRect(0, 0, 400, 400);
( E s# E6 b; i6 Q8 d$ N - g.setColor(Color.RED);
. n- a( g, K8 \! A' s - g.setFont(font0);; ~* B9 _# U! g7 r1 E9 @
- let str = "晴纱是男娘";
* e, t" p- d% D4 Y( p! i: o - let ww = 400;% d; H7 ^3 [( g4 y+ p! x5 u9 m# ~
- let w = getW(str, font0);
/ \( r( s7 c+ _; S0 v/ O+ H! ? - g.drawString(str, ww / 2 - w / 2, 200);
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/ |( v2 J' Q" l. ?% V- const mat = new Matrices();
. k; `: D4 a' P7 z& Q6 k - mat.translate(0, 0.5, 0);
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+ k2 o) q. S( p1 j. A9 b; ~- function create(ctx, state, entity) {0 Y8 u, |& s6 \7 I
- let info = {
* W# X( q1 E5 S6 L8 F, ?8 e. p+ q ]2 [ - ctx: ctx,
4 N; f( |. \, a' Z' |" x9 S - isTrain: false,
- ?' m$ B( O/ x5 d - matrices: [mat],
% c( e- F9 R$ \0 r$ x - texture: [400, 400],
6 h' ~6 x6 @! I - model: {
4 w1 e" R+ u$ M1 l: B' q - renderType: "light",( R& o4 P& {& D: ?: P
- size: [1, 1],
5 t7 n" I2 A; z5 b, ? - uvSize: [1, 1]5 e+ x4 P5 _' B' L7 b% m$ x$ V
- }
7 E8 B0 C8 H, D. ~3 @$ G1 m5 v* D - }' l5 m4 Y& `0 A$ P2 z
- let f = new Face(info);
1 o6 W7 Y: R% B2 r) z: s" [; u - state.f = f;
. C: z9 F, D- j' F' Z! Z, n - * ?5 F2 l6 z; ^1 o& G! J! e
- let t = f.texture;
* q. L( W4 b7 k3 A6 ~ - let g = t.graphics;1 h2 _( [! S# r" x: @! e
- state.running = true;
6 m; ]* w( M, z3 [/ | - let fps = 24;5 u2 v4 S3 ~1 G/ B' S/ p: v
- da(g);//绘制底图! ]. S/ K4 ^7 [' @+ R$ |# e
- t.upload();
c V3 P. W# }# T - let k = 0;
) M+ R8 G. r+ V8 X - let ti = Date.now();9 g3 R1 U* H8 G
- let rt = 0;) V1 W2 P' @' C% B
- smooth = (k, v) => {// 平滑变化
/ w/ s. F! x+ E `3 L - if (v > k) return k;
8 \2 g" U* {3 W& f+ F - if (k < 0) return 0;$ s& |# h L( p1 q
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;4 E' E5 a& v1 R' `1 {
- }
% u2 Z$ x9 y, z9 }; P& B6 X - run = () => {// 新线程& X9 I0 N# G0 x. Y/ K
- let id = Thread.currentThread().getId(); R+ ^* @/ o) L& k; E
- print("Thread start:" + id);
% t( \3 o' t+ O4 r" e - while (state.running) {
' ]9 L! w3 x7 m+ B& F; C& N - try {
# `# I) d$ k+ _3 e' S+ M: U* c - k += (Date.now() - ti) / 1000 * 0.2;
& g0 I% ]& J8 R* d C# M, U# O - ti = Date.now();
& s }8 g! f/ _1 s { - if (k > 1.5) {
3 P& ]' f/ c& t, S - k = 0;& n; _8 w3 l7 p& G
- }
: i5 Q7 F8 K0 V9 G; U - setComp(g, 1);' O G8 Y8 h* R8 t* g' f. d, i7 w
- da(g);
8 w [( e" r0 ]% l P: ~* I' { - let kk = smooth(1, k);//平滑切换透明度
+ G; [0 J$ q( g8 M9 O! Z/ _ - setComp(g, kk);
' k8 z3 R$ \6 ~- J - db(g);& i& f3 v9 e/ S# D; C- o7 X
- t.upload();
$ }+ A6 O7 k" `- F3 |/ o - ctx.setDebugInfo("rt" ,Date.now() - ti);
+ X- W5 v- `5 x7 }' w4 g - ctx.setDebugInfo("k", k);# @% v; D. I# l. T) m2 j
- ctx.setDebugInfo("sm", kk);% b" c5 U3 @* B8 W3 d3 x/ c1 ^
- rt = Date.now() - ti;' _3 ^# m/ T# P9 C% `6 n5 H$ |
- Thread.sleep(ck(rt - 1000 / fps));" h7 @6 R) k& s1 X6 O& }7 E! c
- ctx.setDebugInfo("error", 0)
1 m+ f$ y8 G8 D0 ^+ w - } catch (e) {6 t8 f' v s: M8 \
- ctx.setDebugInfo("error", e);
, _1 J$ u( c! \" e$ Y - }$ C1 l7 X( ]4 p: a9 w: ^" G2 b
- }( ^5 |3 V- w' L) G, C* _- |
- print("Thread end:" + id);1 E/ _( |! w s6 G( D) v9 f
- }4 H* i0 @9 R& i& w3 w# i
- let th = new Thread(run, "qiehuan");: P) g" }4 ]$ u1 A1 |
- th.start();
8 M* y! N/ b$ Q# Q5 w' J y" W3 [ - }; j6 H( A4 C5 |
- ( b s% S& n" ], E
- function render(ctx, state, entity) {
M3 }9 N. ~ T - state.f.tick();
0 \' v# m0 a% ~; q; K) w" r - }
1 S4 r+ V! q+ e2 `% T: X, r2 [ - ) o3 x& s; `6 c2 f Z& h' z5 P
- function dispose(ctx, state, entity) {
2 S/ N& f) n9 Z/ I) m/ g - print("Dispose");4 O" D/ q2 ]% A
- state.running = false;8 f) u: F4 ^4 c. |3 P5 h
- state.f.close();( P1 k- a2 \8 d3 h9 w
- }
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, s: K+ X7 l" d* u, S1 i" ~* I- function setComp(g, value) {
1 E% l8 g' M; I) T - g.setComposite(AlphaComposite.SrcOver.derive(value));
L% T/ v1 I# c5 y) G7 Z - }
复制代码 ( h) T1 Y {: ^# G; a5 q! q
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。
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, f+ s9 I* k6 ?* X; 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)
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