|
|
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
×
5 y; D+ m1 L( G' X' W X1 t/ r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 o; o5 ]# a# [0 i3 L; y
- importPackage (java.lang);
6 }5 H. d+ f, q' D9 o - importPackage (java.awt);
# G* B, @: F: K( q
, b6 w; O* \/ W- include(Resources.id("mtrsteamloco:library/code/face.js"));
3 J n; X% L( C* z. z$ x
* y5 [5 X, g9 h2 q; i6 C- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
6 G+ `$ d0 m" X2 Z+ Y0 G$ H( Z) X
) r. F! T! H2 m1 a* k! K& r3 k8 h- function getW(str, font) {
! s% k! x: z4 s% K2 T - let frc = Resources.getFontRenderContext();
8 L0 Y' `7 q: R4 m - bounds = font.getStringBounds(str, frc);
# X3 L/ F9 c' R& ?! w& P8 F7 J - return Math.ceil(bounds.getWidth());2 x% m: T- V. @6 ?
- }. L3 x" q3 F0 ^8 W! C7 {
- . d4 F+ x$ j9 S; g0 o' `6 }9 A
- da = (g) => {//底图绘制
1 t% o; A3 W* \8 e/ I n& Z - g.setColor(Color.BLACK);
7 ]$ z3 y, C# } - g.fillRect(0, 0, 400, 400);5 i" N' {9 h# `+ C' k
- }
# \3 B1 D& [; s2 x* e) b! ?
1 x" P& B, u* l: S% N/ b- db = (g) => {//上层绘制
; B3 c+ A* E$ D4 M% n - g.setColor(Color.WHITE);
! l: o4 M5 f" }$ ^: o* {1 Z - g.fillRect(0, 0, 400, 400);4 R1 R! w7 T/ t4 B
- g.setColor(Color.RED);. B1 T1 z7 p+ z# b8 `9 q3 F
- g.setFont(font0);" t' U& V5 t) W& P9 l" O
- let str = "晴纱是男娘";
/ P: x' C- e0 j - let ww = 400;
% u7 J8 h% m( ?: r/ [+ V @: P6 `7 ^+ J) b - let w = getW(str, font0);* _& B. b5 c9 H2 k: s# h- v4 G
- g.drawString(str, ww / 2 - w / 2, 200);
+ C I0 z* c0 D7 i; [ - }
( W3 u/ u: d( q6 H
5 `- t8 k) B; v8 b- {4 k- T* I% v- const mat = new Matrices();
( N2 R% \7 P j - mat.translate(0, 0.5, 0);
6 C# e1 c: a0 b/ f" o" ` - . R5 h; u$ j% @$ ?/ Q* i* [+ c
- function create(ctx, state, entity) {
. Q' ^5 U* A( d N9 H" [ - let info = {
( F- @( G; U$ F. `4 [: B( T - ctx: ctx,' G/ t: ~0 T! ~( `; r0 m9 t6 K
- isTrain: false,/ L& o* o8 _9 l# e; @
- matrices: [mat],
2 |1 B" a2 f! ^2 Y# s - texture: [400, 400],* ~9 b% c* G2 k0 v- _
- model: {: z% A! f* {8 e! L8 Y1 A
- renderType: "light",
7 R/ [, p5 @. A1 g2 \3 u4 H - size: [1, 1],
' y* I3 E& g* ^- d' D& V7 T8 r - uvSize: [1, 1]
; ^5 t% A n" E- e7 u9 i" H# \$ s - }& ], N/ P7 m( I3 b9 X9 ^
- }7 X2 F1 t* p7 f$ {, w
- let f = new Face(info);
: }) B1 e/ |8 d7 `) ] s3 [) L - state.f = f;+ c% v7 |" L+ {9 y" p9 T4 K& H
- # Z: x1 |, X1 W2 S$ i' [: y
- let t = f.texture;
1 A% i W+ ^" }+ T' Q7 f* _7 _ F! ~ - let g = t.graphics;
K; l0 W; g4 A/ ~4 \$ @ - state.running = true;
' [) d7 B( [8 s - let fps = 24;
$ f% X3 N4 y, y: I3 U' n - da(g);//绘制底图/ b K$ s3 s% ~) q$ K
- t.upload();7 P" p1 m# b+ Z
- let k = 0;
- A! w) Y' C+ Y% v- a5 D- G - let ti = Date.now();4 t6 G, j# [5 M
- let rt = 0;* T. F( r/ b3 C( f' L7 t x
- smooth = (k, v) => {// 平滑变化6 p/ Q: r2 @. K/ y( b
- if (v > k) return k;9 Y7 j% o9 K: V1 h
- if (k < 0) return 0;! I' j& @& w) `) w
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
8 T- n X' W( D4 A/ T# ^ - }
4 W4 p+ j& D; }, L! I' V - run = () => {// 新线程& r- M+ V Y3 Q1 m2 Y; Y1 G
- let id = Thread.currentThread().getId();
& `, p1 T5 H1 L$ y% v( ~* P# Z - print("Thread start:" + id);
' P5 @: U4 M" p/ l, t5 ^ - while (state.running) {' W! ]& G8 z& ^( Q
- try {
8 U6 M1 h* d$ L. V- h* R - k += (Date.now() - ti) / 1000 * 0.2;, q; @1 @) l. D! |0 Y
- ti = Date.now();
! [3 R4 I5 _6 F4 {- ^: p - if (k > 1.5) {
6 {; V) C0 H; j1 H5 u6 N, P* t - k = 0;
; L7 I7 p/ f' V - }8 p& }* n/ F8 f6 f0 s( v7 u
- setComp(g, 1);3 |/ n Y# K$ F9 S5 ` k4 F
- da(g);+ k' d' ~4 ^9 u6 n
- let kk = smooth(1, k);//平滑切换透明度
3 }* w4 J/ p5 i, | - setComp(g, kk);
: j, n0 ^7 O4 J9 U/ O! d u - db(g); r7 b8 V4 a. y3 z
- t.upload();
1 d: ~3 I# F! x, I/ m5 h - ctx.setDebugInfo("rt" ,Date.now() - ti);. G: o- X/ o* L+ p* D
- ctx.setDebugInfo("k", k);! l( l) y( ]" a6 i6 z: v
- ctx.setDebugInfo("sm", kk);
" L) y E- ^4 N$ y0 p7 ^; W - rt = Date.now() - ti;
) k+ b3 ], m {; v t+ [ - Thread.sleep(ck(rt - 1000 / fps));- B3 ~9 h! X# E4 ?8 d- T9 y0 U
- ctx.setDebugInfo("error", 0)& z {, D/ X; v3 h+ x7 e% H
- } catch (e) {
6 N0 @, Z& c' T w: g; O' p; ^7 \ - ctx.setDebugInfo("error", e);% F7 F E+ N7 e: c" K0 c
- }. S8 n# E. x6 E8 b2 ]7 g
- }* F8 \6 @9 c8 j1 q
- print("Thread end:" + id);% K1 k2 P! D7 c9 s8 S2 n9 X6 e" a
- }
1 V! i- Q S6 a7 ^( m5 T - let th = new Thread(run, "qiehuan");
) j; J9 ?) \: l( H! S - th.start();/ ~% O8 n5 ` F. j
- }
; u/ S/ i7 S1 g: |) a) R: T5 V& } - \0 A# Q; x# J- S0 m
- function render(ctx, state, entity) {$ ]* y$ S& y. q" L' ]
- state.f.tick();* ]( W+ i! r! c8 K' g
- }
& q& [: b7 K C2 g' q
4 b3 {' g6 J7 u5 a2 A4 R- function dispose(ctx, state, entity) {, |: P5 e0 I' r9 f9 ^2 p. c4 \
- print("Dispose");4 a6 k, c: J7 v/ M/ C. C$ ?4 u" ?
- state.running = false;: v" @& w" N* j0 w7 h& y: n& ]
- state.f.close();- x) I4 N. g" a- [8 K* ?7 E
- }5 s @5 d2 Q% D% S6 A0 b, H
; i4 b3 ^3 b" [- function setComp(g, value) {7 ~5 b! z$ F/ J, I
- g.setComposite(AlphaComposite.SrcOver.derive(value));( A6 d/ c1 l# k5 T* I2 W: w+ t4 ^
- }
复制代码
3 }! u l3 V, t- g$ h8 ^# J- [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。
3 m- @# J1 L+ Q2 P0 |8 {% q' z) Z: W7 T4 h r! R
3 a* `! W+ G0 D5 a
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)9 W0 I& l' W; [% ?0 `
|
|