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3 S4 A7 Z+ E) |6 j6 u. ?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。7 g) f0 W- o$ X8 {
- importPackage (java.lang);5 i. c; Y4 \- @5 k- h) {2 \
- importPackage (java.awt);
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- include(Resources.id("mtrsteamloco:library/code/face.js"));
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- const font0 = Resources.getSystemFont("Serif").deriveFont(Font.PLAIN, 80);
+ ~, M6 _" W" V4 K
+ u* ~- e& e) f0 x, X- function getW(str, font) {
2 i6 F( {/ H* ~, \4 ~3 A - let frc = Resources.getFontRenderContext();
& B! a% y' j8 X! V, \ - bounds = font.getStringBounds(str, frc);
: ]5 c* ~, }9 p4 [ - return Math.ceil(bounds.getWidth());
5 ~$ H5 F1 ?9 g; s, W5 Q# W) d - }
# F P4 o# A3 d1 u. [
7 i. c2 g5 f+ @+ \9 S9 G/ f. Y- da = (g) => {//底图绘制
/ s. ~. r! v/ V" l2 |# S7 b - g.setColor(Color.BLACK);
2 F4 k5 `& N8 d8 H1 x0 a - g.fillRect(0, 0, 400, 400);. J U& u' m4 n8 G6 z$ c
- }
2 B# ^' I/ Y' k2 ?& X+ s
* T+ t% g8 M0 ?- db = (g) => {//上层绘制
+ d3 V4 h% |" L2 t i& o0 o - g.setColor(Color.WHITE); n" ]( G. ?! x& j
- g.fillRect(0, 0, 400, 400);
6 f6 |( S3 x' T3 s+ T: G: W - g.setColor(Color.RED);
* r7 l6 D; X9 t8 O - g.setFont(font0);
- J, I A2 z! ?) K" M8 d - let str = "晴纱是男娘";
/ P# c! p$ W- T1 L - let ww = 400;- y. t! [1 P; i3 X9 C
- let w = getW(str, font0);& X; D$ B" F; R2 F& u6 h$ E0 q
- g.drawString(str, ww / 2 - w / 2, 200);# h3 A3 U: ], p+ u, R* V$ T. @
- }5 G0 Y. e+ U$ q4 h; A
- 8 M! Z6 x. `# l6 l
- const mat = new Matrices();
, Y# F# ]* K" F! i' A/ r9 n - mat.translate(0, 0.5, 0);
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/ T& o5 E# f; v+ d, S: B" G g- function create(ctx, state, entity) {
, @; z1 s) @ Q4 r - let info = {
4 l. p w0 R3 d- ^7 J2 G* ]4 X - ctx: ctx,4 a0 Q1 e4 s- b1 x7 R5 ?
- isTrain: false,2 c8 H0 Z* F! t; ^3 K7 [- Q
- matrices: [mat],5 ]' X) m- h1 ]" M% K# [
- texture: [400, 400],
" e4 r, L9 @. Q+ u - model: {/ i s# i- }/ X& `# k @# C' |
- renderType: "light",' F: a4 [( _4 x% l" d* h: E$ Y X
- size: [1, 1],/ e, e% [! o! y( ~
- uvSize: [1, 1]
- l2 f4 L! E: C7 H9 x4 V - }
- g. U2 w3 L I3 k$ \* L - }
2 j" y3 M2 B3 D) @4 Z! ]" f6 P - let f = new Face(info);
; q9 }- J8 s s7 a# T - state.f = f;1 G- N$ v/ l+ Q7 w" L1 l+ |, v7 B, A+ b
- ; {$ m, e) Y& E* s! X
- let t = f.texture;4 c9 {2 ^' L: y( c, e
- let g = t.graphics;. h4 L: X6 L+ d/ {
- state.running = true;
+ l {* M+ ?" H) F5 ]1 f; L9 B' u - let fps = 24;# B8 Q: i( \$ h9 s4 s9 y
- da(g);//绘制底图
1 ]7 Z: p$ \, c) s0 _ - t.upload();- D, X6 Z" ]( Z
- let k = 0;6 t4 Y/ M' S# D1 r
- let ti = Date.now();
9 ^' C& M4 y* G. b$ n: L - let rt = 0;; p7 |* Z4 b8 r8 M/ x& C# M6 ^
- smooth = (k, v) => {// 平滑变化
3 R' x# n( D' \. j8 x - if (v > k) return k;/ ~3 ~9 M/ S) H( y% ~9 o5 ?. |
- if (k < 0) return 0;
; D* G/ J) o3 z5 C( d2 J# T - return (Math.cos(v / k * Math.PI + Math.PI) + 1) / 2 * k;( I: s& b0 f n# ?5 o" J! v
- }+ p+ t7 r! {2 k( i& M7 Y
- run = () => {// 新线程- O4 ~" L4 d3 g8 ?
- let id = Thread.currentThread().getId();: ~, J9 b) W" G U% ~' O" x
- print("Thread start:" + id);
" ^3 d3 T3 ]/ |, ^. M2 j - while (state.running) {
. v" X/ `9 R. [$ Q ~& o2 q - try {
4 X! c' v7 l7 M- z; M: c - k += (Date.now() - ti) / 1000 * 0.2;9 I; |1 o h4 U& ?0 ?
- ti = Date.now();& B, J4 `% d/ X; y* v
- if (k > 1.5) {
J. e0 z. [9 I4 o - k = 0;
7 B1 E$ D9 V# Y. ? - }
" @0 D* b( C" [9 C! I - setComp(g, 1); ^ G! x9 @% k7 P) _" P
- da(g);/ B; d1 p5 C+ R. C" ]
- let kk = smooth(1, k);//平滑切换透明度" n: }$ X6 W# P2 |
- setComp(g, kk);
/ d3 A9 w8 h7 z* G - db(g);
9 x0 v, ^7 V/ s. T6 G - t.upload();
* ~# {1 c, I. C - ctx.setDebugInfo("rt" ,Date.now() - ti);
6 [, k0 U l) k0 b$ h& w - ctx.setDebugInfo("k", k);9 x% P, z& E% F5 |: a6 b: M
- ctx.setDebugInfo("sm", kk);
0 X$ {; b: @5 b5 `( A C - rt = Date.now() - ti;
B: z+ @7 g! M2 } - Thread.sleep(ck(rt - 1000 / fps));
9 d F% _7 ?" e/ h( b - ctx.setDebugInfo("error", 0)5 w# R' t6 _* x
- } catch (e) {! V7 B- n6 |4 Q; U i4 W7 O2 Z
- ctx.setDebugInfo("error", e);$ [8 g3 F, O/ q* [/ Y1 s
- } ?" K, Z* o' G3 O9 x
- }' ]' Q) P2 R! r. n$ A m
- print("Thread end:" + id);& m4 |* H, f; F X% R+ r: }' B* j
- }6 d6 t' |% Z; |
- let th = new Thread(run, "qiehuan");
+ i. Q/ ^1 t" p - th.start();. I$ _1 p N, x0 m7 `/ H
- }7 T1 q# Q9 m6 U; [% ?) n
- ! [; x; n8 F" C
- function render(ctx, state, entity) {# ]' L" Y8 O8 Y3 v
- state.f.tick();/ Q* G1 B% K4 ]) M6 ~
- }, \+ p7 @% Y/ {
- - u$ z1 q- e% g& e# }) R
- function dispose(ctx, state, entity) {
) M% h5 b. q* [* z - print("Dispose");7 z& [# e5 q A
- state.running = false;3 c; H* t$ O! k; @% Q; q
- state.f.close();( Y# W4 U! ]( Y: }6 f3 n8 G. b; K5 |
- }
6 s; H: A0 I3 v7 ~! g - 4 ]$ s' N9 p% I2 Q* g$ ?1 B5 q4 W5 c$ K
- function setComp(g, value) {
5 W' h0 p8 [0 B, i8 p - g.setComposite(AlphaComposite.SrcOver.derive(value));
) A, P, `" n) \, c# w3 ?: M - }
复制代码
- p# C! ~- v% C5 w ]6 W8 ^# P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。/ e. |' `4 I0 J. Z$ E
" w9 w" p5 r9 _: _2 J+ r
5 l" ], I7 C7 c6 r) j0 ]/ f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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