|
|
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
×
* l; Y+ ^& l: \7 z4 u% W" Q& s
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。. v* e& c0 Y' {
- importPackage (java.lang);, p6 ~+ Z2 t5 |! D0 o
- importPackage (java.awt);
3 @- M8 }" c. J3 D" |. h3 J6 j) w - , }7 o7 P+ I& S4 H
- include(Resources.id("mtrsteamloco:library/code/face.js"));( j5 x, g, p# X- e
% D6 m. G/ ^% {* I0 ~- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);9 ]( F" t6 v; [3 u; W* Q
& Q$ g2 b' H. P- N- function getW(str, font) {/ \: u* G5 j4 A; H# W) w5 P _8 D
- let frc = Resources.getFontRenderContext();8 M# y+ A; C- Y. H3 q
- bounds = font.getStringBounds(str, frc);7 t$ {) q1 \* f* H! Q! n
- return Math.ceil(bounds.getWidth());# @5 B! }; d( s# i( O6 ~5 Q% ~
- }/ ~/ g- b8 \7 r' f7 ]/ j' W j' b) T
- 5 c, ^% ~0 w( p" Y
- da = (g) => {//底图绘制- x9 r2 F2 k5 L3 R( W F }7 L5 g
- g.setColor(Color.BLACK);
8 x8 E9 W- v. p, Y( s - g.fillRect(0, 0, 400, 400);3 E2 Z. w8 T* S/ d) H8 \3 ` P
- }
J$ N3 D, N& W0 [0 ?2 A
/ P1 r6 U) d* n% } M) ]4 F- db = (g) => {//上层绘制 z# y( ~% R5 b) w
- g.setColor(Color.WHITE);( t1 R5 x8 E* J" R; q# ^, W; q; x" b
- g.fillRect(0, 0, 400, 400);6 ^/ b6 H( K; ` R j
- g.setColor(Color.RED);
* q( H8 U9 q w - g.setFont(font0);
1 d7 G- d: B4 b } - let str = "晴纱是男娘";
( n+ c4 A) K/ @ E- v/ D - let ww = 400;
' x$ t! V/ _. F+ h9 @5 G( u1 u - let w = getW(str, font0);
; p) v& g& E9 X6 H* A - g.drawString(str, ww / 2 - w / 2, 200);
" G4 p7 A. s4 e( ]* @( U, p; W7 N - }+ d B# m! l, R9 h$ d6 Q
, u. T7 s1 o4 J* _! p/ v, j& U- const mat = new Matrices();
/ p% I) I7 v- X/ Z+ P - mat.translate(0, 0.5, 0);' ]- y! o! h# |7 \. ? Q
5 S4 H3 F/ E0 ]3 r1 F' S2 n- function create(ctx, state, entity) {, f( a# _0 U, q2 D' I
- let info = {
$ G! U8 M$ T- X# C# g3 {6 ]. t - ctx: ctx,) I. U, p5 s/ l$ T
- isTrain: false, J; ]. v* A D; l8 T5 u7 ?
- matrices: [mat],# O- D) B1 Q. F3 i3 ~" S. o
- texture: [400, 400],
6 a6 n( w9 e# o- }& @ - model: {9 ~* D6 b( j r2 d3 u
- renderType: "light",% d7 V7 e4 U; K& [9 e# D
- size: [1, 1],, g! \* @, W0 j/ j
- uvSize: [1, 1]
7 E+ E; f$ T( x( y. L$ ?6 A - }3 e" B6 `$ u3 H6 g* e/ h
- }
3 [6 L, n. l0 j: t - let f = new Face(info);
5 a" F; r" o! G: e, p- ^6 A - state.f = f;
& ]3 M, s, ~! n! O6 [ - 8 }- T* w! L) b. n+ f' I
- let t = f.texture;! V0 ~! r8 |' e2 u& n( D
- let g = t.graphics;
8 O+ p. A" G3 P. b - state.running = true;
9 Z( G. q( l: F5 `, K1 x0 w - let fps = 24;0 C# Z7 c f* y& n" S4 [
- da(g);//绘制底图: }$ ]% a! W; W' o
- t.upload();' C1 \' h5 j& l, ^2 N; q
- let k = 0;$ b7 q2 r+ T; s& S
- let ti = Date.now();0 R5 R5 q, q* w- C. E% k5 m. P% c
- let rt = 0;
* X* Q7 X# @( ?6 _" Q2 l1 ^% n7 b - smooth = (k, v) => {// 平滑变化
4 f+ }' b5 ~: e" z. ?0 | - if (v > k) return k;# q8 o. N- G0 d! T" D
- if (k < 0) return 0;
& k2 L( p0 K( F& T; w - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
" R' K8 y6 j- t - }% e2 T$ S( S' e) F( q
- run = () => {// 新线程
) y$ }( M' S2 c& h" ?* ^ - let id = Thread.currentThread().getId();( l3 L" r. p# }, x$ u7 P5 Y
- print("Thread start:" + id);) r% U: S( e* R* }( K E
- while (state.running) {" {9 Z; T r; D0 @1 Z
- try {
- h9 A6 p! u4 J3 T9 f2 q y- h - k += (Date.now() - ti) / 1000 * 0.2;1 \ {' z3 r/ v: q2 ?
- ti = Date.now();
; ~% b7 d Z, @& W8 G: T3 {+ Q - if (k > 1.5) {& H0 v v2 \% w
- k = 0;& {6 P8 x. E' q, E# Q6 l6 d* [
- }" \% M+ v; t" f v$ z4 K
- setComp(g, 1);
, F4 }& |# G! j6 ^ - da(g);. F7 L; P6 J4 X; m) c5 r- @
- let kk = smooth(1, k);//平滑切换透明度* b3 M6 }5 A. ?' f2 q# f3 f
- setComp(g, kk);1 O0 C0 ^6 z. A" `/ `! L1 [! g8 e9 c* ]
- db(g);
) s6 _& z2 M6 ^5 B9 V5 ]! \8 Q8 B+ T - t.upload();/ s# E8 T4 M1 |; Q7 J% w
- ctx.setDebugInfo("rt" ,Date.now() - ti);
" l$ s: v& V; Y( \" b( O" { - ctx.setDebugInfo("k", k);1 G. l! S- e0 {& H/ C( k
- ctx.setDebugInfo("sm", kk);- q w0 k" w& P0 h' A: y; K# n
- rt = Date.now() - ti;
( L m) C$ W; w: |" ] k1 e - Thread.sleep(ck(rt - 1000 / fps));; h+ U |( E/ l9 t" A
- ctx.setDebugInfo("error", 0)
/ B3 S3 p. o. N8 c0 ^ - } catch (e) {
5 P0 x# \" f9 Z6 \+ ~ - ctx.setDebugInfo("error", e);$ P& U6 V$ q" B' G: P" d' L
- }
* _% R8 @0 ?: [- C% } - }
+ _6 A+ I3 v, ~ a! t1 K - print("Thread end:" + id);3 x5 q2 q+ R$ P: z/ }
- }5 S" g' J7 |" @( q
- let th = new Thread(run, "qiehuan");( |; E2 F- z4 y; N
- th.start();5 l! g# F9 ]6 l {6 v7 y
- }! _1 c) h: U% i. h: W" r& D b
9 V: d6 `4 _/ @0 @( e2 s- function render(ctx, state, entity) {
: _' v0 Q6 S ]# b# F1 Y4 M6 S - state.f.tick();
c( x& a6 z: o# O' O% ~$ I- K - }
6 G4 {! T: ?$ D( C, X - : ^. C( ?: G( u+ o
- function dispose(ctx, state, entity) {
I* H" c) e/ V- b - print("Dispose");0 Z- K u5 D! e+ S/ j. x4 E
- state.running = false;) j6 E& k; T) X. y+ q: E3 w
- state.f.close();: ^& U( l4 ]' L: c& h% B: w
- }
( S6 X# Z. U/ A - 7 J0 N2 a6 Y! _. n, F- r& ^) a
- function setComp(g, value) {
+ b& u0 F% {& e, k. p) x - g.setComposite(AlphaComposite.SrcOver.derive(value));$ V) Q& T- c! j8 Q( R" C
- }
复制代码
) w; C( `8 S6 @7 y# F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。0 Y7 ~$ d# o+ s' l6 W2 C9 w1 m9 F& m' w
; }6 R; t9 J, x! ?! w& M2 T- s2 z$ [7 s; u* X) 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)
/ C! f! z6 B# O4 E' v6 r f) { |
|