|
|
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
×
2 J/ r8 m% \9 |& F. \: _
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。6 G, i7 W6 Y1 p0 P2 n& s$ \0 R
- importPackage (java.lang);' Z* J; P z) D6 o* g+ |" d
- importPackage (java.awt);
2 q+ a/ {9 Y" _7 \' a - 6 V: h6 J+ p" ]: d# Y
- include(Resources.id("mtrsteamloco:library/code/face.js"));) N) Z v0 q; l6 v6 `
" X" \! U2 C5 a$ e0 }- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);( {6 T5 H( z) `, f+ g$ z
- 1 S! i' ~5 c, W
- function getW(str, font) {
9 `+ ?1 N1 D3 d$ U5 [, V - let frc = Resources.getFontRenderContext();
. Q) c% Q+ v& a- s' F9 o - bounds = font.getStringBounds(str, frc);
' c" O. D' {1 P* H4 _" c - return Math.ceil(bounds.getWidth());
5 A( ?9 j, k9 E+ b* D; i& j - }
; N0 Y2 i( v. n: e4 t. R2 ]3 O8 B
: y+ \1 c. P* R! E# P- da = (g) => {//底图绘制
" g! @* C1 V a @! d o- n - g.setColor(Color.BLACK);# c! s3 g' c9 }) ]
- g.fillRect(0, 0, 400, 400);
( c9 g; j2 {& p* W) ~" F6 _9 E! c0 S - }$ N' e6 j: k n3 p# }9 @
- ' R9 B8 _. c" F# `
- db = (g) => {//上层绘制
) a3 z- U- c, p; v& _: |7 O - g.setColor(Color.WHITE);! w" U. G$ \2 I( M# r: l
- g.fillRect(0, 0, 400, 400);: {0 D7 t: M; N/ D. c! U( ~/ f
- g.setColor(Color.RED);
$ z2 U, b; N7 V; f" q! X# o% r+ g - g.setFont(font0);7 \# ~# Y) e3 f, T% e. Q/ P1 B, J7 R
- let str = "晴纱是男娘";
) n5 y, n5 k a5 [7 N8 _* u- N& ` - let ww = 400;4 v, G0 S- n9 c
- let w = getW(str, font0);9 p; Q9 W" L% e: l/ o* g
- g.drawString(str, ww / 2 - w / 2, 200);
2 e% s/ p d2 {# t+ v2 B( ` - }1 H7 j8 n8 z2 E; }/ c. w4 g
- ! n' N! ~ h4 b, F6 M, d
- const mat = new Matrices();
% d/ b3 r) i1 x - mat.translate(0, 0.5, 0);
; Y, p ]0 U0 }
: o) {+ ?4 Q3 ]3 v! j* }- function create(ctx, state, entity) {9 G _0 }; `' y
- let info = {- n$ M1 p! ^) ?& K! q9 i; ~) m
- ctx: ctx,
! Z$ B$ s3 j8 n j9 g; u. U- `0 P# K - isTrain: false,6 t& i5 ?0 T9 H g7 X
- matrices: [mat], T( Q; }9 E! `& j, O" Y
- texture: [400, 400],
% V7 v. @. V4 `' p6 S& m. Y - model: {* I; h6 z! ?# [
- renderType: "light",
/ d) F! Q8 _+ H) i - size: [1, 1],0 u1 z* `& J, O; J, C% W Q: w
- uvSize: [1, 1]$ Z# O5 H0 @& O2 g
- }2 ]. n) {$ q- ?0 I( x
- }
7 {. C9 X1 ^. j9 s4 i! K) { - let f = new Face(info);
+ [" [! W; c) { Q3 t! \; j) G- B# C - state.f = f;
4 @6 N- B9 i) i. Y% O+ N; p! ] - 4 e: Y7 ~; [0 v# @# ^7 o
- let t = f.texture;0 M+ h6 ~% v' ^1 ~: X
- let g = t.graphics;& u1 X' @1 n- U4 |8 A8 T5 \ j! s) D7 F
- state.running = true;6 `' I* W. W$ G6 P: W. }
- let fps = 24;/ f u( Y6 r' ~5 B3 ~: B2 A! B
- da(g);//绘制底图
: w' b$ W! s8 e& f - t.upload();' J2 z; V" `$ \9 I
- let k = 0;: ~ P4 M# p) W7 P7 Z* U4 E# Z) g$ `
- let ti = Date.now();
! w# b( D. |8 P, [. o; F4 ]6 o - let rt = 0; d6 J& ^4 C# j( c- M0 k6 Q
- smooth = (k, v) => {// 平滑变化! t% x0 l$ T# T, W! N P' h) u9 V
- if (v > k) return k;
% |- Y+ m- g. k( @& \1 f! H! X - if (k < 0) return 0;- n: y" j& K. Q9 @
- return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;* n3 @& H! g, O8 U, J5 A# I& u. W
- }! p% y8 r' E; l" }9 T9 p( c+ I5 M' G
- run = () => {// 新线程& l; q" ~8 A& z5 u9 [4 l/ i
- let id = Thread.currentThread().getId();- h% u1 ]2 u x% c: ~+ \
- print("Thread start:" + id);
! k& d( y; O- S+ ` - while (state.running) {. b! K$ ]7 P7 w7 C: S: y* E
- try {
5 @) J8 Q8 k* Y7 @( N( M% \ - k += (Date.now() - ti) / 1000 * 0.2;* w0 e! G4 l( X) m: x
- ti = Date.now();
0 @. K }( B& f' ?9 { - if (k > 1.5) {
1 v0 A# G/ ^. o) z# s- h7 L - k = 0;7 r+ Y! Y" \ I, j# @
- }' Y) B3 Y/ `& I( i
- setComp(g, 1);
/ g' K& d! w: q" F' E - da(g);7 A* ?" i9 ]" U Y4 A
- let kk = smooth(1, k);//平滑切换透明度
, p9 P# Z* k: g& U$ x, E* c; P: ~; | - setComp(g, kk);* t+ _/ [6 F- s
- db(g);4 }0 ?# @& F4 |# L5 _
- t.upload();! \" H$ v" c7 Y Q2 w4 u
- ctx.setDebugInfo("rt" ,Date.now() - ti); Z+ ]' N8 B& l7 ~6 F0 s# q4 }5 H
- ctx.setDebugInfo("k", k);, \) h' T1 ~( i, u: e
- ctx.setDebugInfo("sm", kk);
# d# A0 J L- \) T/ u. y - rt = Date.now() - ti;( X% H R! R- }* `, j
- Thread.sleep(ck(rt - 1000 / fps));7 \; N3 n! H Q0 v
- ctx.setDebugInfo("error", 0)# r+ }. l+ }# e3 F' r; Y
- } catch (e) {
' d' X7 L6 w1 M3 E2 ^2 m" |" U - ctx.setDebugInfo("error", e);
/ z. Y3 { [ C9 n) e& f1 ? - }
, X; A6 }$ [% L5 B1 I4 c - }
- B$ C$ `5 N' L. X5 `7 I T- r - print("Thread end:" + id);8 |) e! v' ^. ]% x0 a5 A
- }- ` `- G2 ?1 ?+ _
- let th = new Thread(run, "qiehuan");. S {4 q9 o7 U1 i$ F& G
- th.start(); u* {) M, m1 ] E$ S
- }
4 E: m' B0 Z" M* _ - 8 r( ^9 i2 _( X
- function render(ctx, state, entity) {
w* ?" p& o9 T, |8 c: K' S - state.f.tick();
Y3 b8 d; c2 ~+ k A3 ~' O4 q - }
& D6 Q! l# K6 D0 E( x Z - ) f- y" ~6 }- E0 t0 o7 ~; Q
- function dispose(ctx, state, entity) {' U* h6 ]! p7 u, r
- print("Dispose");
/ R! }/ B. j: }7 q0 N9 i7 V8 o - state.running = false;
; i* z* h! ~& G. C3 w - state.f.close();
, w' i+ a/ C; \! x" B! K) |, J6 s - }
' k3 F2 C: q+ ^& B- ?& E4 z - # [; z! z( V9 V/ v
- function setComp(g, value) {- N& [/ g! n# V8 m6 A% p
- g.setComposite(AlphaComposite.SrcOver.derive(value));: Z( Y& y2 R& T a: C; z% g
- }
复制代码 9 N" N7 _- L4 ^ \" R! X
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。
" `6 `! @; v, _& [6 L* }) B2 c5 K* F/ [3 r0 }& }
* d% K0 ?5 o: U0 f; _+ b
顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)" b) A* c/ [: F3 N. }8 {: \: [( u
|
|