|
|
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
×
( Y, s+ _" P9 E
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。
z% K. k. C4 f; T0 b- importPackage (java.lang);
- b7 I- S! v5 w Z0 @ - importPackage (java.awt);
1 K" F t/ p8 k# t5 O; q - 7 n" B5 U* P3 h) W
- include(Resources.id("mtrsteamloco:library/code/face.js"));! Q) o7 X: _' t: j; P
- # K0 t _& m& G) L
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80); i) S# X4 e; q
- 8 ~3 y( K! i( H- y$ g5 l
- function getW(str, font) {, Y% p* X R) C. W3 B
- let frc = Resources.getFontRenderContext();- G# ~: ]$ y$ O/ D4 K
- bounds = font.getStringBounds(str, frc);* H1 D C- J8 A u4 |* {
- return Math.ceil(bounds.getWidth());/ \( v0 ?/ A2 s6 Q5 t
- }0 w! T0 d8 m+ K- l
H5 Z6 Q0 l8 P$ U9 s+ J2 z0 _- da = (g) => {//底图绘制
# C1 u' W! J+ T) x* f - g.setColor(Color.BLACK);: |# U* a# J+ T, ]% T4 |
- g.fillRect(0, 0, 400, 400);6 P4 H2 o; u# ~/ |. I% w
- }
9 g3 {$ w9 E* @) }8 q. p
n0 h; U! R. x% z+ r- db = (g) => {//上层绘制 C, G) q- \# m+ _0 t5 H
- g.setColor(Color.WHITE);; V6 M# r8 H y' i' z
- g.fillRect(0, 0, 400, 400);
* V a( J6 Q3 b$ A' h! ~2 _ - g.setColor(Color.RED);
# s/ D3 o, E: V1 C. A - g.setFont(font0);' X/ Z1 M7 ~4 z7 \ x3 F7 b( g
- let str = "晴纱是男娘";
" m) |6 ]* R* P - let ww = 400;0 e9 R* d ]' d9 h/ \# ^4 ~: O
- let w = getW(str, font0);% D0 \4 a6 H' w8 p+ Q- |
- g.drawString(str, ww / 2 - w / 2, 200);
! Y' ?4 m3 g/ c0 b) C - }
" x) i# R, x; i8 ~, p1 C/ D6 {% K - Q' j1 S6 }, o4 ^. I) P* [# q
- const mat = new Matrices();
4 H4 z9 f/ _2 p1 M8 D - mat.translate(0, 0.5, 0);
) A7 P$ {$ J: a3 }( h
/ ]) k; d( ?1 F( J- function create(ctx, state, entity) {
+ i8 C6 G4 m/ m& U1 h - let info = {' q9 Y& S( _) T# @
- ctx: ctx,4 X" y* J' |" r# k
- isTrain: false,% C8 V( Q0 |7 z
- matrices: [mat],0 v2 t, h5 k9 W5 S, Y; R6 \
- texture: [400, 400],
- }! u* P/ q6 X - model: {
7 k! C5 Q" @7 t2 t! ~: { - renderType: "light",
% V: ]* X) N, A. @ - size: [1, 1],
0 ]. v0 ?. b n - uvSize: [1, 1]
% a B' }# g/ Z. ^ - }; h* z; t, Z6 c. `3 \4 x, Z. M
- }9 T* s( u# ^8 z S, N4 s" K9 H
- let f = new Face(info);& l4 S! e/ ?7 E, r( Q/ z6 L
- state.f = f;
/ K* F, p- f0 U - * A- {* M0 V* e7 n% |0 Q1 j
- let t = f.texture;
' j4 @+ W- T% K2 P0 n" p - let g = t.graphics;* E1 Q1 U7 O' B/ }/ U
- state.running = true;
# I/ { A5 \3 Q. b0 P3 A: I - let fps = 24;
: g% u! n2 O) m5 |! f* j( C5 q, ?& t - da(g);//绘制底图
' W6 T/ T- d! t - t.upload();
, s) i/ Y2 X' G, C& Z - let k = 0;
$ T1 ?: _6 O+ K: j3 @, O5 g - let ti = Date.now();) N7 |/ v8 F$ K- |* F& @( s
- let rt = 0;
9 p! Y4 y, J5 v' M1 _5 z - smooth = (k, v) => {// 平滑变化+ ]9 B R% p. n% {0 x3 J q% S
- if (v > k) return k;4 v3 N5 [) M& W/ s. Y) a. [6 o
- if (k < 0) return 0;
6 i W, ` g% _5 f, s - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;& Y2 V9 m3 y$ w8 r8 m: ~6 F
- }
8 v- j: v0 E( u6 }1 J3 U - run = () => {// 新线程
( O2 c- b# W3 F( D6 z$ \: { - let id = Thread.currentThread().getId();
, G1 U- c+ ~4 c5 R% b - print("Thread start:" + id);3 A) h0 v2 n) R/ Z: [
- while (state.running) {
5 r# f. e( i7 Y8 H - try {. c* C9 W+ s/ f3 l' r
- k += (Date.now() - ti) / 1000 * 0.2;
( y2 V) @1 W, d0 O1 B - ti = Date.now();) A7 o' F( h \+ e; H0 m Q
- if (k > 1.5) {
" V) z. u5 m8 Y1 Z" Y - k = 0;6 o) {' X' R4 h4 ]; {
- }
/ k/ }+ u C, r- S/ ] - setComp(g, 1);
* Q3 L- r2 t2 P' ~+ A9 z# j - da(g);
8 C* Y$ i- a0 O& i6 n - let kk = smooth(1, k);//平滑切换透明度
& ^ F6 b8 V' S' l7 o - setComp(g, kk);3 P: f% J: H: D+ \2 Y
- db(g);5 ?# e* L" `8 f; P1 k H( z$ o. B
- t.upload();
1 n+ w ]5 W3 `. A: N3 k - ctx.setDebugInfo("rt" ,Date.now() - ti);
9 H# m7 v4 v% G - ctx.setDebugInfo("k", k);% G( o% P* H1 g/ K0 J; m
- ctx.setDebugInfo("sm", kk);9 q3 t; A) C: m; K! y1 ?. c
- rt = Date.now() - ti;: c7 \4 x1 Q, Q4 u6 y
- Thread.sleep(ck(rt - 1000 / fps));
, I! z. o9 _& @* X" Y& h - ctx.setDebugInfo("error", 0)
) M5 X9 k+ {& e5 N' m6 S2 d - } catch (e) {
* M. \7 l2 ]) o6 C% P" L, |- j - ctx.setDebugInfo("error", e);: ^, X0 q2 C5 w# n' L
- }
1 D$ P! X: u8 N* e6 M2 X' Z+ R - }
5 k- g) O8 ^3 ^: @. G+ Q9 O5 j - print("Thread end:" + id);
( ~$ t$ |8 {. y% ] - }
9 A0 j' ^' K8 K* O6 y- O - let th = new Thread(run, "qiehuan");
8 Y# C l, F8 L3 x/ X2 g - th.start();
3 J' D9 G- b6 z+ G - }
- ]& }0 r" O5 T% R, ~' b. x - , {5 z0 r1 O, s2 p( H
- function render(ctx, state, entity) {# G. F" O' _: _( c
- state.f.tick();+ z4 ^" A( N4 l3 Q
- }8 U- i/ Q1 ]( i1 [; ^
- , U3 C5 x, [* c* O6 ^
- function dispose(ctx, state, entity) {+ s+ e+ Q7 x# B6 h$ g7 O7 ~
- print("Dispose");
: S& i3 ?; J% M- `$ v - state.running = false;
9 G( a4 K2 m7 x0 c$ d2 K+ ] q' {" J - state.f.close();! F+ K7 y" o2 S& L% K
- }% ^* n" [8 k, i2 i9 S4 Z, p2 o
- : R; J0 t+ ~5 m! M/ M( t
- function setComp(g, value) { [; k$ F' H O4 _& Y0 r- G
- g.setComposite(AlphaComposite.SrcOver.derive(value));( ?- L- a' \7 M @4 X/ \
- }
复制代码
) j/ G1 F( K* C2 a ^4 P; d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 v) p) `2 b4 E; t( h/ Y
3 K! P- Y( z; k' P3 D+ N* O/ m; ^3 S0 ]7 F+ D# m
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
1 J: {3 K1 ]+ R3 _# {3 ? |
|