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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。+ R( N6 N0 P% X* n1 H4 R5 V
- importPackage (java.lang); I' U( H' H/ p8 g) X6 u4 I
- importPackage (java.awt);# R% ]6 h" @# x, r$ \. x J6 J( F7 Z
7 N$ B; F* E. E+ S: ^. K9 d- B) s) d- include(Resources.id("mtrsteamloco:library/code/face.js"));0 C6 U" x" C& U8 w
- ' ~: ?: ?0 X( G# v) E3 P. z6 e$ N
- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
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& Z8 {- n$ e- M# h6 T! ?5 @! s- function getW(str, font) {
4 `" C: W8 J9 v! P - let frc = Resources.getFontRenderContext();
( H5 S9 F6 F3 N, A0 V" W: @ - bounds = font.getStringBounds(str, frc);9 W- Y5 {4 C1 I& N
- return Math.ceil(bounds.getWidth());0 u+ ~% K8 A3 O* {' z. m; Z
- }
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- da = (g) => {//底图绘制
9 l' E, Z$ U+ \- f/ [ - g.setColor(Color.BLACK);! l1 n0 x. f' f P6 R) l z
- g.fillRect(0, 0, 400, 400);2 |1 b1 v3 Z4 \+ }' j; Q' e3 C
- }
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- db = (g) => {//上层绘制# T" _- _& K/ R/ ]$ C
- g.setColor(Color.WHITE);
1 C) z2 n$ g& l - g.fillRect(0, 0, 400, 400); Y* {) H3 b/ @7 N9 Z
- g.setColor(Color.RED);# k5 q2 ^. i7 M+ P5 _
- g.setFont(font0);' M& t3 E: H; o1 C3 W0 _, L
- let str = "晴纱是男娘";% w0 Z7 v8 d8 W0 Q
- let ww = 400;9 }) D- ? w1 b ]! O5 O' A
- let w = getW(str, font0);
5 g" X% N& ]! Y# f: V; V - g.drawString(str, ww / 2 - w / 2, 200);
A) _, E: W& v' d; r - }
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$ Q' n4 V3 j* o- const mat = new Matrices();
& N/ v3 r& O: y3 j2 q - mat.translate(0, 0.5, 0);
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* w b! r7 X/ S- function create(ctx, state, entity) {
# O7 H& @ {$ ^* _. ] - let info = {7 r O F& _/ |0 p9 Y
- ctx: ctx,7 D( \; |6 M" W
- isTrain: false,! t* I. C0 E6 X: u
- matrices: [mat],
, o$ n: z6 C+ a( v - texture: [400, 400],
0 J9 J3 h d& [+ m - model: {
: p6 z& u1 _% |2 v7 R- Q9 J - renderType: "light",
2 i; k+ D7 s. g7 _- y - size: [1, 1],
& G; R* r; P1 R% K' x) t - uvSize: [1, 1]
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- }* l! z! w; k* \1 Z$ J
- let f = new Face(info);, F0 {+ p7 w, v3 A) X2 p
- state.f = f;5 B( x, p6 j2 h* |
- 2 s0 K' F# Q% ], _1 V, G9 ^
- let t = f.texture;
' y2 `8 \3 E: ]" M2 T9 l - let g = t.graphics;
4 t* b' o, e% c2 v - state.running = true;
* n2 k' A! p s- Z - let fps = 24;- ` `3 [$ z: H5 o2 r: @6 ]
- da(g);//绘制底图# i$ u9 f+ O# U, i
- t.upload(); i5 {/ p F: J5 W' S& ^) T: B
- let k = 0;0 m7 q( Y% h; a
- let ti = Date.now();2 I7 E# N6 O5 y& n8 j/ M
- let rt = 0;0 {2 S. w. v" I9 [
- smooth = (k, v) => {// 平滑变化
/ H! H" d9 o- |' ^2 m5 A" b - if (v > k) return k;" ]' I& Y3 |5 Z7 z2 Z# W3 X
- if (k < 0) return 0;
* w0 L; u S0 x7 z# n' a$ o - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;
. B$ \+ ]0 o& J) J - }
& U/ ?" m, D* |! p! X/ B7 g - run = () => {// 新线程/ U; b& h b. B) A( o ]; x
- let id = Thread.currentThread().getId();# k6 e) u& _5 G! |# Y+ R: S
- print("Thread start:" + id);
4 r, L& X @6 |- C- ^. X - while (state.running) {- W8 V4 r0 c* J$ w: d: a
- try {5 ]7 R W8 f1 `' l" `
- k += (Date.now() - ti) / 1000 * 0.2;# P7 w2 Z- k2 g+ W
- ti = Date.now();
! n; L ^% X' @+ [! B - if (k > 1.5) {
* `0 B' {; v z7 r. a4 e - k = 0;
& N0 V0 ^+ ?" q1 V" V& _ - }
# P) j7 ]. d% z - setComp(g, 1);
7 k4 Q7 g5 a% |! F - da(g);
% |, D1 _( ]* ] - let kk = smooth(1, k);//平滑切换透明度
3 A' n' Q1 [! K$ n% U U - setComp(g, kk);3 ?* m. i( y) l5 G4 b: C8 V
- db(g);1 A* p) D/ O7 M# l
- t.upload();# t1 A1 h& i* ?) M5 c
- ctx.setDebugInfo("rt" ,Date.now() - ti);$ Z) j/ k( n2 M4 g" U
- ctx.setDebugInfo("k", k);& H2 c. d0 R* c# D9 }
- ctx.setDebugInfo("sm", kk);
4 y# i1 Q+ T) A6 x0 W$ x - rt = Date.now() - ti;; J0 f' f6 j& f& l+ ?% j0 j
- Thread.sleep(ck(rt - 1000 / fps));
+ t) m9 D% X6 _. j6 e* T6 j - ctx.setDebugInfo("error", 0)$ g# s4 Z2 h' e, y7 }
- } catch (e) {
' ^- u" C6 X, ` x2 z! i - ctx.setDebugInfo("error", e);3 X0 l3 h4 Y/ |* p# z' [
- }7 _+ H+ [; T' z% X% B
- }* Y: k& S( G8 \$ D6 S4 z+ E8 e
- print("Thread end:" + id);7 C$ s$ b4 e/ @. T
- }) l6 j& C% }* k! {
- let th = new Thread(run, "qiehuan");
# y$ P& a1 \/ R, v0 } - th.start();' D& ?, q4 l+ u6 ~% R6 G
- }6 N, q" c' E9 Y% v/ [
/ T! Y& V$ J0 f/ }( z$ H- function render(ctx, state, entity) {1 u, ]) |4 q, c# Z% ^" b
- state.f.tick();
# t% x$ {$ h8 e& |$ |0 Z - }/ L) s. u. E* s4 Y
6 w# L5 ?+ Z5 c9 r- function dispose(ctx, state, entity) {8 I, w) K! d) ?+ K$ @- v% \3 C
- print("Dispose");4 q' R( g6 R; o6 |7 m
- state.running = false; D" u2 z* I1 G
- state.f.close();. N0 ~% B/ n0 Y5 O' B: a
- }
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- function setComp(g, value) {
/ y3 u% x* v" j! p# m! F) Z$ b* ` - g.setComposite(AlphaComposite.SrcOver.derive(value));; Q1 g% r) g9 o$ T9 l
- }
复制代码
1 h1 S' Q Y/ u& }0 f5 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。 S- c& O" A, {
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7 c g0 ]6 b+ R+ [4 }3 D顺带一提,完成的时间挺短的,一次是 2 ms 左右(当前情况下)
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