|
|
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 K/ g# _2 L, A- x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。
& e0 ?& ~5 ?: ]2 j& a" e! \- importPackage (java.lang);
. C s4 D% a4 \! A* I1 u5 v8 \ - importPackage (java.awt);
& i& ~0 s- e% T& Y* y: ?7 K - 4 u) M2 i2 S4 n4 g# j- `' C$ j
- include(Resources.id("mtrsteamloco:library/code/face.js"));2 d, U$ Q+ q7 E* Q. q! V
- Z& n7 n X, J! ?& q
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
- h" F5 a, J/ s! @2 ~3 J7 {6 }; t
2 V. n5 A) S, a% _- function getW(str, font) {
( w- A3 T: R6 W - let frc = Resources.getFontRenderContext();
4 z2 _2 {# O1 e4 Q9 R0 J9 U& }6 k - bounds = font.getStringBounds(str, frc);( l2 b3 H" v# o' i# o! M6 g) b! L
- return Math.ceil(bounds.getWidth());3 i v+ ^/ d/ d# ?
- }
2 {3 T) `, n: c& y7 z4 A& h4 z5 _ - 7 M# _, L& Y& T- X
- da = (g) => {//底图绘制$ u$ m7 g. J/ V/ d& {4 n
- g.setColor(Color.BLACK);
7 ^8 l6 f0 [4 o - g.fillRect(0, 0, 400, 400);
+ G! W, @( L+ o1 S - }6 A6 O1 z9 B0 P; K6 [+ X8 ^
9 E5 s3 n% {. z- r- db = (g) => {//上层绘制4 }/ @: r1 e5 D" O
- g.setColor(Color.WHITE);
( p, m* p, l { - g.fillRect(0, 0, 400, 400);
, {6 h# y: v/ ] - g.setColor(Color.RED);. G7 t4 u6 X/ n4 Y W9 ]+ U+ o1 _7 }( y
- g.setFont(font0);
3 H+ `( ^5 M. S - let str = "晴纱是男娘";
* Y1 B9 N! j+ Z7 H4 S. y - let ww = 400;
9 `" q3 w& l/ ~. e3 W - let w = getW(str, font0);5 D+ Z& d3 q) c& h( t
- g.drawString(str, ww / 2 - w / 2, 200);
' o7 p1 B8 X8 n - }
% R3 \7 [# d" y& f$ v - / }- _ B* K! n i) Y* o
- const mat = new Matrices();
# a h# }# P( N" ^ - mat.translate(0, 0.5, 0);
' z+ |& D$ u2 k, u# Y6 S0 s - ; r9 Y! W3 ~ H% d& Z9 m4 ^
- function create(ctx, state, entity) {6 }) |% b3 l9 o; \; |2 U
- let info = {6 p2 I5 h* C( e( n. m9 V
- ctx: ctx,, m$ F0 D7 E' R
- isTrain: false,
A" a1 x0 O8 C! @ - matrices: [mat],
* C9 C/ P) _( f5 o - texture: [400, 400],& z2 f# e1 L1 G7 P5 @ _
- model: {! p. D# s: a8 N+ K
- renderType: "light",
2 [/ w7 Z# i3 F& z$ R2 E4 t& K - size: [1, 1],
, p8 h# N! d2 F5 q6 h t - uvSize: [1, 1]; t0 [! o- i2 B0 Z3 I d2 M) Y
- }: \" \/ _" l; T, c n9 o0 \/ U7 H
- }- |! K* c5 b3 f. h
- let f = new Face(info);
+ M3 Y& A3 t& L! C1 f; g7 V; |/ t - state.f = f;# v- u; i5 Y+ {3 w% e
+ c( X; _: `$ h6 [) w O- let t = f.texture;1 V. S3 m. m9 T
- let g = t.graphics;* J; S j4 ^/ v9 G0 }# N1 _
- state.running = true;# b2 S; q3 V) j, L/ @
- let fps = 24;
; d; O4 W# [: W1 a - da(g);//绘制底图+ R1 I4 Y# O+ o5 t
- t.upload();
( a) d B2 V- O3 p4 A0 O3 W - let k = 0;
, x5 ]/ J( k) h5 k% } ` - let ti = Date.now();
% Q7 x1 B" T: i J - let rt = 0;
) }2 y5 _: Q7 y& O7 O - smooth = (k, v) => {// 平滑变化
: W9 c4 Y, u. M( f5 {# j4 N - if (v > k) return k;
: ~( h& M1 h+ o5 R# R8 B" p - if (k < 0) return 0;6 j$ U9 L) v+ \& m0 W5 C, d; j
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;4 p4 p7 x. U. p
- }
' \# V4 U3 K# s% _8 z - run = () => {// 新线程+ O9 v- e+ f: g4 D; |8 m; W
- let id = Thread.currentThread().getId();7 j8 |( g i: F
- print("Thread start:" + id);+ z3 r; s) Q5 f. A7 a7 _
- while (state.running) {0 c# N& J! x& ]4 z5 `
- try {
+ V$ @2 B3 J" U' s/ k: J - k += (Date.now() - ti) / 1000 * 0.2; _6 ]4 ^$ ], b
- ti = Date.now();/ ~8 H2 K- `: r# S! O
- if (k > 1.5) {
% T) l/ h# c: x% C. c2 T' M+ P* A: v - k = 0;$ O( S: \1 s& o, u% r
- }
) c* h; O4 ]- s3 \ - setComp(g, 1);
& e0 N- H' w. r C - da(g);
5 S9 a* {# I( i& F - let kk = smooth(1, k);//平滑切换透明度) Q4 v# ~4 Y1 s, R7 K( o% t
- setComp(g, kk);7 c+ A' c6 J8 H1 Q" E/ M
- db(g);+ z. n" J+ z; V, G$ P: {( W
- t.upload();
. b* o j5 f3 G: W6 p1 V2 L" r - ctx.setDebugInfo("rt" ,Date.now() - ti);) l. `' r4 A- V$ \0 z4 g
- ctx.setDebugInfo("k", k);! u w% @5 ?# ^ J" N7 `4 V+ e' K( C
- ctx.setDebugInfo("sm", kk);
8 r; V( _% p2 e, y, ~' l8 S* i! x1 D* Z - rt = Date.now() - ti;. E0 @" a" n' s' o9 Q8 R7 x
- Thread.sleep(ck(rt - 1000 / fps));
+ V5 B) }! ]9 W - ctx.setDebugInfo("error", 0)
0 @, f" |, V4 v( v& p, w - } catch (e) {
! I m+ K) J; E% P, O a - ctx.setDebugInfo("error", e);
\ R+ o) T& O - }
; x% i* u9 C4 t8 f: T# b/ n8 @ I - }
' a( w- E }/ A6 g' |2 s' I M - print("Thread end:" + id);& r+ U) K- s1 W
- }
: T% v& `% h4 \2 ]" k - let th = new Thread(run, "qiehuan");
. C" Y2 C. c: p$ e9 V# r - th.start();, y* k [) S4 D) q) {, ~4 L3 k
- }5 h9 M7 G, q; h
# D `" P* B$ l0 m Q- function render(ctx, state, entity) {
$ \# r: P4 ]+ i1 o; R; v - state.f.tick();
, L6 u" ]3 Y- q4 O - }: X) t. w* p# s
6 B, `+ {1 b- w0 H4 n0 g1 J( e7 ]/ V- function dispose(ctx, state, entity) {- g: l: N* q9 \1 Q/ M0 h6 V. c
- print("Dispose");
% ?, p* @; b- O, \ - state.running = false;5 B5 R; C0 k, j* Y/ y: X* x
- state.f.close();
* m1 a; V2 {0 ~7 h, N. Q# ~ - }" B4 h9 g; ^# A7 A- v( ]
- ' ~0 v& ] K- {0 p2 g" r
- function setComp(g, value) {
+ z, L1 K( z B1 U - g.setComposite(AlphaComposite.SrcOver.derive(value));
. Y, ^3 c8 F9 z2 K* J* H - }
复制代码 6 K! H/ \$ _2 N0 b. W0 l+ @
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。2 M( `- h. U+ n3 a: E
) @) J( ?9 U+ {( e% L2 q
1 Y7 e/ u' \1 Q& T1 K; B) w$ Y- y顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)+ A% y7 v* y* w( E
|
|