|
|
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
×
4 I& V1 I3 w' x- f4 \5 ^2 \, g/ y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。
/ W* ~" j; h. B& z% o- importPackage (java.lang);- F! Y2 n$ Y$ {, O; l
- importPackage (java.awt);* c8 [1 _1 f9 d$ \" V" R) }
' X7 D, @% I# \- include(Resources.id("mtrsteamloco:library/code/face.js"));, C9 N5 L3 c6 v. Q$ Q
- ) A& M* c1 G* D, c' ]5 i* y% n5 m
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);6 L4 C: U9 ?8 z; r X
- U/ b) y8 v5 [9 c$ d. B: ]& R* c
- function getW(str, font) {; A9 b- L& k, M. H" y
- let frc = Resources.getFontRenderContext();- W2 P# [) K% A8 D1 T
- bounds = font.getStringBounds(str, frc);
& w$ z [+ K& R9 O% _9 f7 x - return Math.ceil(bounds.getWidth());% ^: g6 o3 c. K: C
- }
8 [! x& g8 K B0 |0 x9 u- m s. M
( u% Z* M! k- P8 i; N, N% ]- p) d7 X# Z- da = (g) => {//底图绘制3 z( r- V& l3 q) J( R
- g.setColor(Color.BLACK);
0 r1 _3 v2 L2 g; Y0 o - g.fillRect(0, 0, 400, 400);5 W4 _# \4 E5 z: ]& H. F/ _" X3 X
- }
( G6 C8 G# Z) e, K- G - + i3 w% t+ T4 }' r# T0 k
- db = (g) => {//上层绘制
$ F/ g- ^9 f$ J& V: f x$ E - g.setColor(Color.WHITE);
8 [' R- e2 c: U& [$ p - g.fillRect(0, 0, 400, 400);
2 i# v5 T2 Q) @5 N6 Y5 @ o - g.setColor(Color.RED);
`" Y$ q% J) t - g.setFont(font0);
" j3 W; l* G6 \ - let str = "晴纱是男娘";# G& a- p8 K0 ?/ }: g0 i
- let ww = 400;
% ?8 ~4 o, d3 H e1 _ - let w = getW(str, font0);
( x1 c. C6 m( c6 R; z c. c - g.drawString(str, ww / 2 - w / 2, 200);
8 Y/ n+ x5 l. O5 ~5 v# \ - }* r. c% X {! o, D7 b2 y8 K% ^
- R r- f+ K# I4 R7 e: |/ E- const mat = new Matrices();. U4 D s& V+ M7 P6 [+ a5 ^
- mat.translate(0, 0.5, 0);/ A' Q3 T* ]# x" K
- % z5 T7 |: h0 |+ s( u* `& j
- function create(ctx, state, entity) {
8 C$ k) [, ]# B$ _ - let info = {
" S' n6 } ^ }: @8 r2 }! ` - ctx: ctx,
7 ^" ~8 j( ?: x) v9 X' q" O - isTrain: false,+ Y2 s& @( l; v3 a1 U T4 F P- S1 V
- matrices: [mat],9 a& L' m. `1 y' r
- texture: [400, 400],, @; z. P. {8 U# z& L) M; K! r& A! \
- model: {
& ]: Y+ G, ~0 a - renderType: "light",$ _( r8 a, v4 U T: d
- size: [1, 1],9 f Y3 v9 ]+ y" p. h
- uvSize: [1, 1]
+ {2 M+ _ n; j0 r" O m, N, a3 e - }
! b1 |$ F; \1 @+ Q - }3 q9 d$ h+ h; g& Y2 m; I
- let f = new Face(info);6 R& j' Q" G% a! ^- W5 }
- state.f = f;
3 [- Q3 [1 i, M - + q Q1 @% S% e( ]6 Z
- let t = f.texture;
8 Z7 S- M7 z0 }( |5 J1 ^8 T - let g = t.graphics;" ]3 a, _, a5 Y. a5 R) s) E) q, x
- state.running = true;
# u0 _* g, c1 K0 b - let fps = 24;
D" {$ u7 d6 B; G( {6 x' @9 M - da(g);//绘制底图. [$ J& B. I! m* e+ J3 J7 W
- t.upload();; R! G3 B2 w8 t+ {3 ~& y, W; S& R
- let k = 0;# a5 G' j6 l( J( p k7 o- s
- let ti = Date.now();
5 Y; i0 k$ E, P; C9 _+ a) G - let rt = 0;
I, D4 b/ }9 W( g' E+ s - smooth = (k, v) => {// 平滑变化
. _2 B# m& u1 u4 ~* E) E+ P - if (v > k) return k;4 i. S9 p! _) ^
- if (k < 0) return 0;! W2 P |8 ]# \' Q" |: a& O
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;8 U) r( t5 `! _/ @- S6 v' O6 Y
- }- _( Z! P! ` w9 Y7 t7 L; N) D4 m
- run = () => {// 新线程
* o6 L/ S8 K- R# C! J - let id = Thread.currentThread().getId();
2 |- f6 ]3 A. V8 F, @' m* u - print("Thread start:" + id);
/ q( P0 N0 l2 _( D. l - while (state.running) {# a5 q$ i! q1 J! M8 ~6 M
- try {; e* Y. _- X* \
- k += (Date.now() - ti) / 1000 * 0.2;+ f5 J1 R7 G* x; U( I6 p9 z
- ti = Date.now();# ^- p8 [5 D& E% A$ b$ H" V
- if (k > 1.5) {
" K' t* b# A. j6 k7 I* N - k = 0;: k7 t1 d. {, T# ]
- }- O" h2 f' Z/ c7 Y, g( N
- setComp(g, 1);
W: b! l, i4 O, O, F. g - da(g);: Z' V2 e" z% z% r: C
- let kk = smooth(1, k);//平滑切换透明度
5 u7 N- ]8 L' T3 b - setComp(g, kk);
) @* s+ @* T9 L& X' O/ [& W3 I - db(g);
, W1 M/ L3 j2 b! v* R. A - t.upload(); ^( F3 g9 y* B) e: @
- ctx.setDebugInfo("rt" ,Date.now() - ti);
" {! I- O. f& @7 [' }3 J5 b - ctx.setDebugInfo("k", k);) F% r; V2 C; D+ \
- ctx.setDebugInfo("sm", kk);; x }, s+ V4 X" y2 p5 o
- rt = Date.now() - ti;, A3 ?7 M$ T2 ~$ M" \# U
- Thread.sleep(ck(rt - 1000 / fps));9 N2 }! n5 |) v! A* Y5 g' @5 a8 W+ N
- ctx.setDebugInfo("error", 0)
_6 t, J6 _% g9 i( C - } catch (e) {# W1 b8 w) Z/ M L f
- ctx.setDebugInfo("error", e);
6 f* j7 {! q) H4 L6 D - }" x* E. j" J" M9 h. n
- }
# @7 U `% m: \, x& H1 q( U$ z9 v - print("Thread end:" + id);, R' [$ ?2 L6 s b! w6 l/ t8 b: f" \
- }9 g) M2 ]( y. @) a( Q5 l+ |# E7 r/ X
- let th = new Thread(run, "qiehuan");& h c. |/ w6 {4 y2 i2 X& Y: N
- th.start();% C ~. c& y6 Y, n" o f# O
- }
, @# }9 y" ~4 Z/ y' @ u
; [# r6 T) ~$ I# W, n4 C- function render(ctx, state, entity) {3 x. c0 S3 F% x# U; m* \8 ~
- state.f.tick();+ I: g5 F( E$ @2 Q7 k! T# b, O
- }+ {, G X" Q- A% r4 J" p( t
- 1 I3 k! a8 G [/ R: e
- function dispose(ctx, state, entity) {: r5 C8 ?* B3 I
- print("Dispose");
, E* H$ {2 E$ L. K+ {& Q* \ - state.running = false;; \. r) @$ f, c; m4 G
- state.f.close();- V$ O f c9 D) _5 M
- }
# {% C, } n, e2 I1 \% r5 }7 n* b: k - 1 W. s; X3 R8 @+ A4 B, |
- function setComp(g, value) {5 M y/ [% u1 o/ Z3 }) H4 J2 i
- g.setComposite(AlphaComposite.SrcOver.derive(value));8 }' k, { P# {& R1 u r- }1 _
- }
复制代码 . o) F: I# \' o1 z3 W5 h
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。
$ a" W. K8 T4 T, k7 { x/ x6 _$ s$ ^* d9 T
- z6 `. x y' K3 J% Z$ P7 D# W5 ]顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
. f% X% V8 F+ T k |
|